{"id":3682,"date":"2023-11-24T16:48:01","date_gmt":"2023-11-24T08:48:01","guid":{"rendered":"http:\/\/www.ponybai.com\/?p=3682"},"modified":"2023-11-24T16:49:09","modified_gmt":"2023-11-24T08:49:09","slug":"%e5%bc%82%e6%ad%a5-apex","status":"publish","type":"post","link":"http:\/\/www.ponybai.com\/?p=3682","title":{"rendered":"\u5f02\u6b65Apex"},"content":{"rendered":"\n<p>Apex \u63d0\u4f9b\u4e86\u591a\u79cd\u5f02\u6b65\u8fd0\u884c Apex \u4ee3\u7801\u7684\u65b9\u6cd5\u3002\u9009\u62e9 \u6700\u9002\u5408\u60a8\u9700\u6c42\u7684\u5f02\u6b65 Apex \u529f\u80fd\u3002<\/p>\n\n\n\n<p>\u4e0b\u8868\u5217\u51fa\u4e86\u5f02\u6b65 Apex \u529f\u80fd\u4ee5\u53ca\u4f55\u65f6\u4f7f\u7528\u6bcf\u4e2a\u529f\u80fd\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u5f02\u6b65 Apex \u529f\u80fd<\/th><th>\u4f55\u65f6\u4f7f\u7528<\/th><\/tr><\/thead><tbody><tr><td>\u53ef\u6392\u961f\u7684Apex<\/td><td>\u542f\u52a8\u957f\u65f6\u95f4\u8fd0\u884c\u7684\u64cd\u4f5c\u5e76\u83b7\u53d6\u5176 ID\u5c06\u590d\u6742\u7c7b\u578b\u4f20\u9012\u7ed9\u4f5c\u4e1a\u94fe\u63a5\u4f5c\u4e1a<\/td><\/tr><tr><td>\u9884\u5b9aApex<\/td><td>\u8ba1\u5212 Apex \u7c7b\u6309\u7279\u5b9a\u8ba1\u5212\u8fd0\u884c<\/td><\/tr><tr><td>\u6279\u5904\u7406Apex<\/td><td>\u5bf9\u4e8e\u9700\u8981\u6279\u91cf\u6267\u884c\u7684\u5177\u6709\u5927\u91cf\u6570\u636e\u7684\u957f\u65f6\u95f4\u8fd0\u884c\u7684\u4f5c\u4e1a\uff0c\u4f8b\u5982 \u4f5c\u4e3a\u6570\u636e\u5e93\u7ef4\u62a4\u4f5c\u4e1a\u5bf9\u4e8e\u9700\u8981\u6bd4\u5e38\u89c4\u4e8b\u52a1\u5141\u8bb8\u7684\u66f4\u5927\u7684\u67e5\u8be2\u7ed3\u679c\u7684\u4f5c\u4e1a<\/td><\/tr><tr><td>\u672a\u6765\u65b9\u6cd5<\/td><td>\u5f53\u60a8\u6709\u4e00\u4e2a\u957f\u65f6\u95f4\u8fd0\u884c\u7684\u65b9\u6cd5\u5e76\u4e14\u9700\u8981\u9632\u6b62\u5ef6\u8fdf Apex \u65f6 \u4ea4\u6613\u5bf9\u5916\u90e8 Web \u670d\u52a1\u8fdb\u884c\u6807\u6ce8\u65f6\u9694\u79bb DML \u64cd\u4f5c\u5e76\u7ed5\u8fc7\u6df7\u5408\u4fdd\u5b58 DML \u9519\u8bef<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u53ef\u6392\u961f\u7684<\/strong>\u00a0Apex \u4f7f\u7528\u754c\u9762\u63a7\u5236\u5f02\u6b65 Apex<br>\u8fdb\u7a0b\u3002\u901a\u8fc7\u6b64\u63a5\u53e3\uff0c\u60a8\u53ef\u4ee5\u5c06\u4f5c\u4e1a\u6dfb\u52a0\u5230\u961f\u5217\u4e2d\u5e76\u5bf9\u5176\u8fdb\u884c\u76d1\u89c6\u3002\u4e0e\u4f7f\u7528\u672a\u6765\u65b9\u6cd5\u76f8\u6bd4\uff0c\u4f7f\u7528\u8be5\u63a5\u53e3\u662f\u8fd0\u884c\u5f02\u6b65 Apex \u4ee3\u7801\u7684\u589e\u5f3a\u65b9\u5f0f\u3002<samp>Queueable<\/samp><\/li>\n\n\n\n<li><strong>Apex \u8c03\u5ea6\u7a0b\u5e8f<\/strong><\/li>\n\n\n\n<li><strong>\u6279\u5904\u7406Apex<\/strong><\/li>\n\n\n\n<li><strong>\u672a\u6765\u65b9\u6cd5<\/strong><\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">\u53ef\u6392\u961f\u7684Apex<\/h1>\n\n\n\n<p>\u4f7f\u7528\u8be5\u63a5\u53e3\u63a7\u5236\u5f02\u6b65 Apex \u8fdb\u7a0b\u3002\u901a\u8fc7\u6b64\u63a5\u53e3\uff0c\u60a8\u53ef\u4ee5\u6dfb\u52a0 \u4f5c\u4e1a\u5230\u961f\u5217\u4e2d\u5e76\u5bf9\u5176\u8fdb\u884c\u76d1\u89c6\u3002\u4f7f\u7528\u8be5\u754c\u9762\u662f\u8fd0\u884c \u5f02\u6b65 Apex \u4ee3\u7801\u4e0e\u4f7f\u7528\u672a\u6765\u65b9\u6cd5\u7684\u6bd4\u8f83\u3002<\/p>\n\n\n\n<p><samp>Queueable<\/samp><\/p>\n\n\n\n<p>\u957f\u65f6\u95f4\u8fd0\u884c\u7684 Apex \u8fdb\u7a0b\uff0c\u4f8b\u5982\u5927\u91cf\u6570\u636e\u5e93\u64cd\u4f5c\u6216 \u5916\u90e8 Web \u670d\u52a1\u6807\u6ce8\uff0c\u53ef\u4ee5\u901a\u8fc7\u5b9e\u73b0\u63a5\u53e3\u5e76\u5411 Apex \u6dfb\u52a0\u4f5c\u4e1a\u6765\u5f02\u6b65\u8fd0\u884c \u4f5c\u4e1a\u961f\u5217\u3002\u8fd9\u6837\uff0c\u60a8\u7684\u5f02\u6b65 Apex \u4f5c\u4e1a\u5c31\u4f1a\u5728\u540e\u53f0\u81ea\u884c\u8fd0\u884c \u7ebf\u7a0b\uff0c\u5e76\u4e14\u4e0d\u4f1a\u5ef6\u8fdf\u4e3b Apex \u903b\u8f91\u7684\u6267\u884c\u3002\u6bcf\u4e2a\u6392\u961f\u7684\u4f5c\u4e1a\u90fd\u8fd0\u884c \u5f53\u7cfb\u7edf\u8d44\u6e90\u53ef\u7528\u65f6\u3002\u4f7f\u7528\u63a5\u53e3\u65b9\u6cd5\u7684\u4e00\u4e2a\u597d\u5904\u662f\u4e00\u4e9b \u8c03\u63a7\u5668\u9650\u5236\u9ad8\u4e8e\u540c\u6b65 Apex \u7684\u9650\u5236\uff0c\u4f8b\u5982\u5806\u5927\u5c0f\u9650\u5236\u3002<samp>Queueable<\/samp><samp>Queueable<\/samp><\/p>\n\n\n\n<p>\u6ce8\u610f<\/p>\n\n\n\n<p>\u5982\u679c Apex \u4e8b\u52a1\u56de\u6eda\uff0c\u5219\u4efb\u4f55\u6392\u961f\u7b49\u5f85\u6267\u884c\u7684\u53ef\u6392\u961f\u4f5c\u4e1a \u4ea4\u6613\u4e0d\u88ab\u5904\u7406\u3002<\/p>\n\n\n\n<p>\u53ef\u6392\u961f\u4f5c\u4e1a\u4e0e\u5c06\u6765\u7684\u65b9\u6cd5\u7c7b\u4f3c\uff0c\u56e0\u4e3a\u5b83\u4eec\u90fd\u6392\u961f\u7b49\u5f85 \u6267\u884c\uff0c\u4f46\u5b83\u4eec\u4e3a\u60a8\u63d0\u4f9b\u4e86\u8fd9\u4e9b\u989d\u5916\u7684\u597d\u5904\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u83b7\u53d6\u4f5c\u4e1a\u7684 ID\uff1a\u901a\u8fc7\u8c03\u7528\u8be5\u65b9\u6cd5\u63d0\u4ea4\u4f5c\u4e1a\u65f6\uff0c\u8be5\u65b9\u6cd5\u5c06\u8fd4\u56de \u65b0\u4f5c\u4e1a\u7684 ID\u3002\u6b64 ID \u5bf9\u5e94\u4e8e AsyncApexJob \u8bb0\u5f55\u7684 ID\u3002 \u4f7f\u7528\u6b64 ID \u901a\u8fc7 Salesforce UI \u8bc6\u522b\u548c\u76d1\u63a7\u60a8\u7684\u4f5c\u4e1a \uff08Apex Jobs \u9875\u9762\uff09\uff0c\u6216\u4ee5\u7f16\u7a0b\u65b9\u5f0f\u67e5\u8be2\u60a8\u7684\u8bb0\u5f55 \u5f02\u6b65Apex\u4f5c\u4e1a\u3002<samp>System.enqueueJob<\/samp><\/li>\n\n\n\n<li>\u4f7f\u7528\u975e\u57fa\u5143\u7c7b\u578b\uff1a\u53ef\u6392\u961f\u7c7b\u53ef\u4ee5\u5305\u542b \u975e\u539f\u59cb\u6570\u636e\u7c7b\u578b\uff0c\u4f8b\u5982 sObject \u6216\u81ea\u5b9a\u4e49 Apex \u7c7b\u578b\u3002\u90a3\u4e9b\u5bf9\u8c61 \u53ef\u4ee5\u5728\u4f5c\u4e1a\u6267\u884c\u65f6\u8bbf\u95ee\u3002<\/li>\n\n\n\n<li>\u94fe\u63a5\u4f5c\u4e1a\uff1a\u60a8\u53ef\u4ee5\u901a\u8fc7\u542f\u52a8\u7b2c\u4e8c\u4e2a\u4f5c\u4e1a\u5c06\u4e00\u4e2a\u4f5c\u4e1a\u94fe\u63a5\u5230\u53e6\u4e00\u4e2a\u4f5c\u4e1a \u4ece\u6b63\u5728\u8fd0\u884c\u7684\u4f5c\u4e1a\u3002\u5982\u679c\u60a8\u7684\u8fdb\u7a0b\u4f9d\u8d56\u4e8e\u53e6\u4e00\u4e2a\u8fdb\u7a0b\uff0c\u5219\u94fe\u63a5\u4f5c\u4e1a\u5f88\u6709\u7528 \u8fdb\u7a0b\u9996\u5148\u8fd0\u884c\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u60a8\u53ef\u4ee5\u8bbe\u7f6e\u94fe\u63a5\u7684\u53ef\u6392\u961f\u4f5c\u4e1a\u7684\u6700\u5927\u5806\u6808\u6df1\u5ea6\uff0c\u8986\u76d6\u9ed8\u8ba4\u503c \u5f00\u53d1\u4eba\u5458\u548c\u8bd5\u7528\u7248\u7ec4\u7ec7\u4e2d\u7684\u9650\u5236\u4e3a 5 \u4e2a\u3002<\/p>\n\n\n\n<p>\u6ce8\u610f<\/p>\n\n\n\n<p>\u58f0\u660e\u7684\u53d8\u91cf\u5305\u62ec \u88ab\u5e8f\u5217\u5316\u548c\u53cd\u5e8f\u5217\u5316\u5ffd\u7565\uff0c\u5e76\u4e14\u8be5\u503c\u5728 \u53ef\u6392\u961f\u7684Apex\u3002<samp>transient<\/samp><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5c06\u53ef\u6392\u961f\u4f5c\u4e1a\u6dfb\u52a0\u5230\u5f02\u6b65\u6267\u884c\u961f\u5217<\/h2>\n\n\n\n<p>\u6b64\u793a\u4f8b\u5b9e\u73b0\u63a5\u53e3\u3002\u6b64\u793a\u4f8b\u4e2d\u7684\u65b9\u6cd5\u63d2\u5165\u4e00\u4e2a\u65b0\u5e10\u6237\u3002\u8be5\u65b9\u6cd5\u7528\u4e8e \u5c06\u4f5c\u4e1a\u6dfb\u52a0\u5230 \u961f\u5217\u3002<\/p>\n\n\n\n<p><samp>Queueable<\/samp><samp>execute<\/samp><samp>System.enqueueJob(queueable)<\/samp><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class AsyncExecutionExample implements Queueable {\n    public void execute(QueueableContext context) {\n        Account a = new Account(Name='Acme',Phone='(415) 555-1212');\n        insert a;        \n    }\n}<\/code><\/pre>\n\n\n\n<p>\u82e5\u8981\u5c06\u6b64\u7c7b\u6dfb\u52a0\u4e3a\u961f\u5217\u4e2d\u7684\u4f5c\u4e1a\uff0c\u8bf7\u8c03\u7528 \u65b9\u6cd5\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ID jobID = System.enqueueJob(new AsyncExecutionExample());<\/code><\/pre>\n\n\n\n<p>\u63d0\u4ea4\u53ef\u6392\u961f\u7c7b\u4ee5\u4f9b\u6267\u884c\u540e\uff0c\u4f5c\u4e1a\u5c06\u6dfb\u52a0\u5230\u961f\u5217\u4e2d \u5e76\u5c06\u5728\u7cfb\u7edf\u8d44\u6e90\u53ef\u7528\u65f6\u8fdb\u884c\u5904\u7406\u3002\u60a8\u53ef\u4ee5\u76d1\u63a7 \u901a\u8fc7\u67e5\u8be2 AsyncApexJob \u6216\u901a\u8fc7\u7528\u6237\u4ee5\u7f16\u7a0b\u65b9\u5f0f\u83b7\u53d6\u4f5c\u4e1a\u7684\u72b6\u6001 \u901a\u8fc7\u8f93\u5165\u201c\u5feb\u901f\u67e5\u627e\u201d\u6846\uff0c\u7136\u540e\u9009\u62e9<strong>\u201cApex\u201d\uff0c\u5728\u201c\u8bbe\u7f6e\u201d\u4e2d\u754c\u9762 \u5de5\u4f5c<\/strong>\u3002<kbd>Apex Jobs<\/kbd><\/p>\n\n\n\n<p>\u82e5\u8981\u67e5\u8be2\u6709\u5173\u5df2\u63d0\u4ea4\u4f5c\u4e1a\u7684\u4fe1\u606f\uff0c\u8bf7\u5728 AsyncApexJob \u4e0a\u6267\u884c SOQL \u67e5\u8be2 \u901a\u8fc7\u7b5b\u9009\u65b9\u6cd5\u8fd4\u56de\u7684\u4f5c\u4e1a ID\u3002\u6b64\u793a\u4f8b\u4f7f\u7528 jobID \u53d8\u91cf \u8fd9\u662f\u5728\u524d\u9762\u7684\u793a\u4f8b\u4e2d\u83b7\u5f97\u7684\u3002<samp>System.enqueueJob<\/samp><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>AsyncApexJob jobInfo = &#91;SELECT Status,NumberOfErrors FROM AsyncApexJob WHERE Id=:jobID];<\/code><\/pre>\n\n\n\n<p>\u4e0e\u5c06\u6765\u7684\u4f5c\u4e1a\u7c7b\u4f3c\uff0c\u53ef\u6392\u961f\u7684\u4f5c\u4e1a\u4e0d\u5904\u7406\u6279\u5904\u7406\uff0c\u56e0\u6b64 \u5df2\u5904\u7406\u7684\u6279\u6b21\u548c\u603b\u6279\u6b21\u6570\u59cb\u7ec8\u4e3a\u96f6\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u6dfb\u52a0\u5177\u6709\u6307\u5b9a\u6700\u5c0f\u5ef6\u8fdf\u7684\u53ef\u6392\u961f\u4f5c\u4e1a<\/h2>\n\n\n\n<p>\u4f7f\u7528\u8be5\u65b9\u6cd5\u5c06\u53ef\u6392\u961f\u4f5c\u4e1a\u6dfb\u52a0\u5230\u5177\u6709\u6307\u5b9a \u6700\u5c0f\u5ef6\u8fdf\uff080-10 \u5206\u949f\uff09\u3002\u5728 Apex \u6d4b\u8bd5\u671f\u95f4\uff0c\u5ef6\u8fdf\u5c06\u88ab\u5ffd\u7565\u3002<samp>System.enqueueJob(queueable, delay)<\/samp><\/p>\n\n\n\n<p>\u8bf7\u53c2\u9605\u00a0<samp>Apex \u4e2d\u7684 System.enqueueJob\uff08queueable\uff0c delay\uff09<\/samp>\u00a0\u53c2\u8003\u6307\u5357\u3002<\/p>\n\n\n\n<p>\u8b66\u544a<\/p>\n\n\n\n<p>\u5c06\u5ef6\u8fdf\u8bbe\u7f6e\u4e3a 0\uff08\u96f6\uff09\u65f6\uff0c\u53ef\u6392\u961f\u4f5c\u4e1a\u5c06\u4f5c\u4e3a \u8d8a\u5feb\u8d8a\u597d\u3002\u4f7f\u7528\u94fe\u63a5\u7684\u53ef\u6392\u961f\u4f5c\u4e1a\uff0c\u5b9e\u73b0\u4e00\u79cd\u51cf\u6162\u901f\u5ea6\u7684\u673a\u5236 \u6216\u5728\u5fc5\u8981\u65f6\u505c\u6b62\u4f5c\u4e1a\u3002\u5982\u679c\u6ca1\u6709\u8fd9\u6837\u7684\u6545\u969c\u5b89\u5168\u673a\u5236\uff0c\u60a8\u53ef\u4ee5 \u5feb\u901f\u8fbe\u5230\u6bcf\u65e5\u5f02\u6b65 Apex \u9650\u5236\u3002<\/p>\n\n\n\n<p>\u5728\u4ee5\u4e0b\u60c5\u51b5\u4e0b\uff0c\u5728 \u8fd0\u884c\u53ef\u6392\u961f\u4f5c\u4e1a\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u5916\u90e8\u7cfb\u7edf\u662f\u6709\u901f\u7387\u9650\u5236\u7684\uff0c\u5e76\u4e14\u53ef\u4ee5\u901a\u8fc7\u94fe\u63a5\u8fc7\u8f7d \u53ef\u6392\u961f\u7684\u4f5c\u4e1a\uff0c\u8fd9\u4e9b\u4f5c\u4e1a\u6b63\u5728\u8fdb\u884c\u5feb\u901f\u6807\u6ce8\u3002<\/li>\n\n\n\n<li>\u8f6e\u8be2\u7ed3\u679c\u65f6\uff0c\u5982\u679c\u6267\u884c\u901f\u5ea6\u8fc7\u5feb\u53ef\u80fd\u4f1a\u5bfc\u81f4\u6d6a\u8d39 \u6bcf\u65e5\u5f02\u6b65 Apex \u9650\u5236\u3002<\/li>\n<\/ul>\n\n\n\n<p>\u6b64\u793a\u4f8b\u901a\u8fc7\u4f20\u5165\u5b9e\u4f8b\u6765\u6dfb\u52a0\u5ef6\u8fdf\u5f02\u6b65\u6267\u884c\u7684\u4f5c\u4e1a \u7528\u4e8e\u6267\u884c\u7684\u63a5\u53e3\u7684\u7c7b\u5b9e\u73b0\u3002\u5728\u4f5c\u4e1a\u5f00\u59cb\u524d\uff0c\u81f3\u5c11\u9700\u8981 5 \u5206\u949f\u7684\u5ef6\u8fdf \u6267\u884c\u3002<samp>Queueable<\/samp><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Integer delayInMinutes = 5;\nID jobID = System.enqueueJob(new MyQueueableClass(), delayInMinutes);<\/code><\/pre>\n\n\n\n<p>\u7ba1\u7406\u5458\u53ef\u4ee5\u5728\u8ba1\u5212\u4e2d\u5b9a\u4e49\u9ed8\u8ba4\u7684\u7ec4\u7ec7\u8303\u56f4\u5ef6\u8fdf\uff081-600 \u79d2\uff09 \u5728\u6ca1\u6709\u5ef6\u8fdf\u53c2\u6570\u7684\u60c5\u51b5\u4e0b\u8ba1\u5212\u7684\u53ef\u6392\u961f\u4f5c\u4e1a\u3002\u4f7f\u7528\u5ef6\u8fdf\u8bbe\u7f6e \u4f5c\u4e3a\u51cf\u6162\u9ed8\u8ba4\u53ef\u6392\u961f\u4f5c\u4e1a\u6267\u884c\u901f\u5ea6\u7684\u673a\u5236\u3002\u5982\u679c\u7701\u7565\u8be5\u8bbe\u7f6e\uff0c Apex \u4f7f\u7528\u6807\u51c6\u7684\u53ef\u6392\u961f\u8ba1\u65f6\uff0c\u4e0d\u4f1a\u589e\u52a0\u5ef6\u8fdf\u3002<\/p>\n\n\n\n<p>\u6ce8\u610f<\/p>\n\n\n\n<p>\u4f7f\u7528\u8be5\u65b9\u6cd5\u5c06\u5ffd\u7565\u4efb\u4f55\u7ec4\u7ec7\u8303\u56f4\u7684\u6392\u961f\u5ef6\u8fdf\u8bbe\u7f6e\u3002<samp>System.enqueueJob(queueable, delay)<\/samp><\/p>\n\n\n\n<p>\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u4e4b\u4e00\u5b9a\u4e49\u7ec4\u7ec7\u8303\u56f4\u7684\u5ef6\u8fdf\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5728\u201c\u8bbe\u7f6e\u201d\u7684\u201c\u5feb\u901f\u67e5\u627e\u201d\u6846\u4e2d\uff0c\u8f93\u5165 \u3001 \uff0c\u7136\u540e\u4e3a\u9ed8\u8ba4\u6700\u5c0f\u503c\u8f93\u5165\u4e00\u4e2a\u503c\uff081-600 \u79d2\uff09<strong>&nbsp;\u6ca1\u6709\u5ef6\u8fdf\u7684\u53ef\u6392\u961f\u4f5c\u4e1a\u7684\u6392\u961f\u5ef6\u8fdf\uff08\u4ee5\u79d2\u4e3a\u5355\u4f4d\uff09 \u53c2\u6570<\/strong><kbd>Apex Settings<\/kbd><\/li>\n\n\n\n<li>\u82e5\u8981\u4f7f\u7528\u5143\u6570\u636e API \u4ee5\u7f16\u7a0b\u65b9\u5f0f\u542f\u7528\u6b64\u529f\u80fd\uff0c\u8bf7\u53c2\u9605\u5143\u6570\u636e API \u4e2d\u7684\u00a0ApexSettings\u00a0\u5f00\u53d1\u4eba\u5458\u6307\u5357\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u6dfb\u52a0\u5177\u6709\u6307\u5b9a\u5806\u6808\u6df1\u5ea6\u7684\u53ef\u6392\u961f\u4f5c\u4e1a<\/h2>\n\n\n\n<p>\u4f7f\u7528\u53ef\u5728 asyncOptions \u53c2\u6570\u3002<samp>System.enqueueJob(queueable, asyncOptions)<\/samp><\/p>\n\n\n\n<p><samp>System.AsyncInfo<\/samp>\u00a0\u7c7b\u5c5e\u6027 \u5305\u542b\u5f53\u524d\u548c\u6700\u5927\u5806\u6808\u6df1\u5ea6\u4ee5\u53ca\u6700\u5c0f\u53ef\u6392\u961f\u5ef6\u8fdf\u3002<\/p>\n\n\n\n<p><samp>System.AsyncInfo<\/samp>\u00a0\u7c7b\u5177\u6709 \u5e2e\u52a9\u60a8\u786e\u5b9a\u662f\u5426\u5728 Queueable \u4e2d\u8bbe\u7f6e\u4e86\u6700\u5927\u5806\u6808\u6df1\u5ea6\u7684\u65b9\u6cd5 \u8bf7\u6c42\uff0c\u5e76\u83b7\u53d6\u53ef\u6392\u961f\u5bf9\u8c61\u7684\u5806\u6808\u6df1\u5ea6\u548c\u961f\u5217\u5ef6\u8fdf \u5f53\u524d\u6b63\u5728\u8fd0\u884c\u3002\u4f7f\u7528\u6709\u5173\u5f53\u524d\u53ef\u6392\u961f\u6267\u884c\u7684\u4fe1\u606f\u4f7f \u5173\u4e8e\u8c03\u6574\u540e\u7eed\u901a\u8bdd\u5ef6\u8fdf\u7684\u51b3\u5b9a\u3002<\/p>\n\n\n\n<p>\u8fd9\u4e9b\u662f\u7c7b\u4e2d\u7684\u65b9\u6cd5\u3002<samp>System.AsyncInfo<\/samp><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><samp>hasMaxStackDepth()<\/samp><\/li>\n\n\n\n<li><samp>getCurrentQueueableStackDepth()<\/samp><\/li>\n\n\n\n<li><samp>getMaximumQueueableStackDepth()<\/samp><\/li>\n\n\n\n<li><samp>getMinimumQueueableDelayInMinutes()<\/samp><\/li>\n<\/ul>\n\n\n\n<p>This example uses stack depth to terminate a chained job and prevent it from reaching the daily maximum number of asynchronous Apex method executions.<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ Fibonacci\npublic class FibonacciDepthQueueable implements Queueable {\n   \n    private long nMinus1, nMinus2;\n       \n    public static void calculateFibonacciTo(integer depth) {\n        AsyncOptions asyncOptions = new AsyncOptions();\n        asyncOptions.MaximumQueueableStackDepth = depth;\n        System.enqueueJob(new FibonacciDepthQueueable(null, null), asyncOptions);\n    }\n       \n    private FibonacciDepthQueueable(long nMinus1param, long nMinus2param) {\n        nMinus1 = nMinus1param;\n        nMinus2 = nMinus2param;\n    }\n   \n    public void execute(QueueableContext context) {\n       \n        integer depth = AsyncInfo.getCurrentQueueableStackDepth();\n       \n        \/\/ Calculate step\n        long fibonacciSequenceStep;\n        switch on (depth) {\n            when 1, 2 {\n                fibonacciSequenceStep = 1;\n            }\n            when else {\n                fibonacciSequenceStep = nMinus1 + nMinus2;\n            }\n        }\n       \n        System.debug('depth: ' + depth + ' fibonacciSequenceStep: ' + fibonacciSequenceStep);\n       \n        if(System.AsyncInfo.hasMaxStackDepth() &amp;&amp;\n           AsyncInfo.getCurrentQueueableStackDepth() &gt;= \n           AsyncInfo.getMaximumQueueableStackDepth()) {\n            \/\/ Reached maximum stack depth\n            Fibonacci__c result = new Fibonacci__c(\n                Depth__c = depth,\n                Result = fibonacciSequenceStep\n                );\n            insert result;\n        } else {\n            System.enqueueJob(new FibonacciDepthQueueable(fibonacciSequenceStep, nMinus1));\n        }\n    }\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u6d4b\u8bd5\u53ef\u6392\u961f\u4f5c\u4e1a<\/h2>\n\n\n\n<p>\u6b64\u793a\u4f8b\u6f14\u793a\u5982\u4f55\u5728\u6d4b\u8bd5\u65b9\u6cd5\u4e2d\u6d4b\u8bd5\u53ef\u6392\u961f\u4f5c\u4e1a\u7684\u6267\u884c\u3002\u4e00\u4e2a \u53ef\u6392\u961f\u4f5c\u4e1a\u662f\u4e00\u4e2a\u5f02\u6b65\u8fdb\u7a0b\u3002\u786e\u4fdd\u6b64\u8fc7\u7a0b\u5728 \u6d4b\u8bd5\u65b9\u6cd5\u4e2d\uff0c\u4f5c\u4e1a\u88ab\u63d0\u4ea4\u5230 AND \u5757\u4e4b\u95f4\u7684\u961f\u5217\u4e2d\u3002\u7cfb\u7edf\u6267\u884c\u6240\u6709 \u5f02\u6b65\u8fdb\u7a0b\u5728\u8bed\u53e5\u4e4b\u540e\u540c\u6b65\u542f\u52a8\u6d4b\u8bd5\u65b9\u6cd5\u3002\u63a5\u4e0b\u6765\uff0c\u6d4b\u8bd5\u65b9\u6cd5 \u901a\u8fc7\u67e5\u8be2\u4f5c\u4e1a\u6240\u5728\u7684\u5e10\u6237\u6765\u9a8c\u8bc1\u53ef\u6392\u961f\u4f5c\u4e1a\u7684\u7ed3\u679c \u521b\u5efa\u3002<\/p>\n\n\n\n<p><samp>Test.startTest<\/samp><samp>Test.stopTest<\/samp><samp>Test.stopTest<\/samp><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@isTest\npublic class AsyncExecutionExampleTest {\n    @isTest\n    static void test1() {\n        \/\/ startTest\/stopTest block to force async processes \n        \/\/   to run in the test.\n        Test.startTest();        \n        System.enqueueJob(new AsyncExecutionExample());\n        Test.stopTest();\n        \n        \/\/ Validate that the job has run\n        \/\/ by verifying that the record was created.\n        \/\/ This query returns only the account created in test context by the \n        \/\/ Queueable class method.\n        Account acct = &#91;SELECT Name,Phone FROM Account WHERE Name='Acme' LIMIT 1];\n        System.assertNotEquals(null, acct);\n        System.assertEquals('(415) 555-1212', acct.Phone);\n    }\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u94fe\u63a5\u4f5c\u4e1a<\/h2>\n\n\n\n<p>\u82e5\u8981\u5728\u53e6\u4e00\u4e2a\u4f5c\u4e1a\u9996\u5148\u5b8c\u6210\u5176\u4ed6\u5904\u7406\u540e\u8fd0\u884c\u4f5c\u4e1a\uff0c\u53ef\u4ee5\u94fe\u63a5 \u53ef\u6392\u961f\u7684\u4f5c\u4e1a\u3002\u82e5\u8981\u5c06\u4e00\u4e2a\u4f5c\u4e1a\u94fe\u63a5\u5230\u53e6\u4e00\u4e2a\u4f5c\u4e1a\uff0c\u8bf7\u4ece\u53ef\u6392\u961f\u7684\u65b9\u6cd5\u63d0\u4ea4\u7b2c\u4e8c\u4e2a\u4f5c\u4e1a \u7c7b\u3002\u60a8\u53ea\u80fd\u4ece\u6b63\u5728\u6267\u884c\u7684\u4f5c\u4e1a\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u4f5c\u4e1a\uff0c\u8fd9\u610f\u5473\u7740\u53ea\u80fd\u6dfb\u52a0\u4e00\u4e2a\u4f5c\u4e1a \u6bcf\u4e2a\u7236\u4f5c\u4e1a\u90fd\u53ef\u4ee5\u5b58\u5728\u5b50\u4f5c\u4e1a\u3002\u4f8b\u5982\uff0c\u5982\u679c\u60a8\u6709\u7b2c\u4e8c\u4e2a\u73ed\u7ea7 \u8c03\u7528\u6765\u5b9e\u73b0\u63a5\u53e3\uff0c\u60a8\u53ef\u4ee5\u5c06\u6b64\u7c7b\u6dfb\u52a0\u5230 \u65b9\u6cd5\u4e2d\u7684\u961f\u5217\u4e3a \u9075\u5faa\uff1a<samp>execute()<\/samp><samp>SecondJob<\/samp><samp>Queueable<\/samp><samp>execute()<\/samp><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class AsyncExecutionExample implements Queueable {\n    public void execute(QueueableContext context) {\n        \/\/ Your processing logic here       \n\n        \/\/ Chain this job to next job by submitting the next job\n        System.enqueueJob(new SecondJob());\n    }\n}<\/code><\/pre>\n\n\n\n<p>\u6ce8\u610f<\/p>\n\n\n\n<p>Apex \u5141\u8bb8\u6765\u81ea\u53ef\u6392\u961f\u4f5c\u4e1a\u7684 HTTP \u548c Web \u670d\u52a1\u6807\u6ce8\uff08\u5982\u679c\u5b83\u4eec\u5b9e\u73b0\uff09 \u6807\u8bb0 \u63a5\u53e3\u3002\u5728\u5b9e\u73b0\u6b64\u63a5\u53e3\u7684\u53ef\u6392\u961f\u4f5c\u4e1a\u4e2d\uff0c\u6807\u6ce8\u4e5f\u662f \u5141\u8bb8\u5728\u94fe\u63a5\u7684\u53ef\u6392\u961f\u4f5c\u4e1a\u4e2d\u3002<samp>Database.AllowsCallouts<\/samp><\/p>\n\n\n\n<p>\u60a8\u53ef\u4ee5\u4f7f\u7528\u9002\u5f53\u7684\u5806\u6808\u6df1\u5ea6\u6d4b\u8bd5\u94fe\u63a5\u7684\u53ef\u6392\u961f\u4f5c\u4e1a\uff0c\u4f46\u8bf7\u6ce8\u610f \u9002\u7528\u7684 Apex \u8c03\u901f\u5668\u9650\u5236\u3002\u8bf7\u53c2\u9605\u6dfb\u52a0\u5177\u6709\u6307\u5b9a\u5806\u6808\u6df1\u5ea6\u7684\u53ef\u6392\u961f\u4f5c\u4e1a\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u53ef\u6392\u961f\u7684Apex\u9650\u5236<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6392\u961f\u4f5c\u4e1a\u7684\u6267\u884c\u8ba1\u5165\u5171\u4eab\u9650\u5236\u4e00\u6b21 \u5f02\u6b65 Apex \u65b9\u6cd5\u6267\u884c\u3002\u8bf7\u53c2\u9605\u00a0Lightning \u5e73\u53f0Apex\u9650\u5236\u3002<\/li>\n\n\n\n<li>\u5728\u5355\u4e2a\u4e8b\u52a1\u4e2d\uff0c\u60a8\u6700\u591a\u53ef\u4ee5\u5c06 50 \u4e2a\u4f5c\u4e1a\u6dfb\u52a0\u5230\u961f\u5217\u4e2d\u3002\u5f02\u6b65 \u4e8b\u52a1\uff08\u4f8b\u5982\uff0c\u4ece\u6279\u5904\u7406 Apex \u4f5c\u4e1a\uff09\uff0c\u60a8\u53ea\u80fd\u5c06\u4e00\u4e2a\u4f5c\u4e1a\u6dfb\u52a0\u5230 \u5e26\u6709 \u7684\u961f\u5217\u3002\u81ea \u68c0\u67e5\u4e00\u4e2a\u4e8b\u52a1\u4e2d\u6dfb\u52a0\u4e86\u591a\u5c11\u4e2a\u53ef\u6392\u961f\u7684\u4f5c\u4e1a\uff0c\u8c03\u7528\u00a0<samp>Limits.getQueueableJobs\uff08\uff09\u3002System.enqueueJobSystem.enqueueJob<\/samp><\/li>\n\n\n\n<li>\u7531\u4e8e\u5bf9\u94fe\u63a5\u4f5c\u4e1a\u7684\u6df1\u5ea6\u6ca1\u6709\u9650\u5236\uff0c\u56e0\u6b64\u53ef\u4ee5\u94fe\u63a5\u4e00\u4e2a\u4f5c\u4e1a \u5230\u53e6\u4e00\u4e2a\u3002\u60a8\u53ef\u4ee5\u5bf9\u6bcf\u4e2a\u65b0\u7684\u5b50\u4f5c\u4e1a\u91cd\u590d\u6b64\u8fc7\u7a0b\uff0c\u4ee5\u5c06\u5176\u94fe\u63a5\u5230 \u65b0\u7684\u5b50\u5de5\u4f5c\u3002\u5bf9\u4e8e Developer Edition \u548c Trial \u7ec4\u7ec7\uff0c\u6700\u5927\u5806\u6808 \u94fe\u5f0f\u4f5c\u4e1a\u7684\u6df1\u5ea6\u4e3a 5\uff0c\u8fd9\u610f\u5473\u7740\u60a8\u53ef\u4ee5\u94fe\u5f0f\u4f5c\u4e1a\u56db\u6b21\u3002\u8fd9 \u94fe\u4e2d\u7684\u6700\u5927\u4f5c\u4e1a\u6570\u4e3a 5\uff0c\u5305\u62ec\u521d\u59cb\u7236\u7ea7\u53ef\u6392\u961f\u4f5c\u4e1a \u5de5\u4f5c\u3002<\/li>\n\n\n\n<li>\u5c06\u4f5c\u4e1a\u4e0e \u94fe\u63a5\u65f6\uff0c\u53ea\u80fd\u4ece\u6b63\u5728\u6267\u884c\u7684\u4f5c\u4e1a\u4e2d\u6dfb\u52a0\u4e00\u4e2a\u4f5c\u4e1a\u3002 \u6bcf\u4e2a\u7236\u53ef\u6392\u961f\u4f5c\u4e1a\u53ea\u80fd\u5b58\u5728\u4e00\u4e2a\u5b50\u4f5c\u4e1a\u3002\u542f\u52a8\u591a\u4e2a \u4e0d\u652f\u6301\u6765\u81ea\u540c\u4e00\u53ef\u6392\u961f\u4f5c\u4e1a\u7684\u5b50\u4f5c\u4e1a\u3002<samp>System.enqueueJob<\/samp><\/li>\n<\/ul>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u68c0\u6d4b\u91cd\u590d\u7684<\/strong>\u53ef\u6392\u961f\u4f5c\u4e1a \u901a\u8fc7\u57fa\u4e8e\u7b7e\u540d\u4ec5\u5bf9\u5f02\u6b65\u53ef\u6392\u961f\u4f5c\u4e1a<br>\u7684\u5355\u4e2a\u5b9e\u4f8b\u8fdb\u884c\u6392\u961f\uff0c\u51cf\u5c11\u8d44\u6e90\u4e89\u7528\u548c\u4e89\u7528\u6761\u4ef6\u3002\u5c1d\u8bd5\u5c06\u591a\u4e2a Queueable \u4f5c\u4e1a\u6dfb\u52a0\u5230\u5177\u6709\u76f8\u540c\u7b7e\u540d\u7684\u5904\u7406\u961f\u5217\u4e2d\u4f1a\u5bfc\u81f4 DuplicateMessageException\uff0c\u5f53\u60a8\u5c1d\u8bd5\u5c06\u540e\u7eed\u4f5c\u4e1a\u52a0\u5165\u961f\u5217\u65f6\u3002<\/li>\n\n\n\n<li><strong>\u4e8b\u52a1\u7ec8\u7ed3<\/strong>\u5668<br>\u901a\u8fc7\u4e8b\u52a1\u7ec8\u7ed3\u5668\u529f\u80fd\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u63a5\u53e3\u5c06\u64cd\u4f5c\u9644\u52a0\u5230\u4f7f\u7528 Queueable \u6846\u67b6\u7684\u5f02\u6b65 Apex \u4f5c\u4e1a\u3002\u4e00\u4e2a\u7279\u5b9a\u7684\u7528\u4f8b\u662f\u5728\u53ef\u6392\u961f\u4f5c\u4e1a\u5931\u8d25\u65f6\u8bbe\u8ba1\u6062\u590d\u64cd\u4f5c\u3002<samp>System.Finalizer<\/samp><\/li>\n\n\n\n<li><strong>\u4e8b\u52a1\u7ec8\u7ed3\u5668<\/strong>\u9519\u8bef\u6d88\u606f \u901a\u8fc7\u5206\u6790\u8fd9\u4e9b\u9519\u8bef\u6d88\u606f<br>\u6765\u89e3\u51b3\u8bed\u4e49\u548c\u8fd0\u884c\u65f6\u95ee\u9898\u3002<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">\u68c0\u6d4b\u91cd\u590d\u7684\u53ef\u6392\u961f\u4f5c\u4e1a<\/h1>\n\n\n\n<p>\u901a\u8fc7\u4ec5\u5c06 \u57fa\u4e8e\u7b7e\u540d\u7684\u5f02\u6b65\u53ef\u6392\u961f\u4f5c\u4e1a\u7684\u5355\u4e2a\u5b9e\u4f8b\u3002\u5c1d\u8bd5\u6dfb\u52a0\u66f4\u591a\u5185\u5bb9 \u5c06\u4e00\u4e2a Queueable \u4f5c\u4e1a\u53d1\u9001\u5230\u5177\u6709\u76f8\u540c\u7b7e\u540d\u7684\u5904\u7406\u961f\u5217\u4f1a\u5bfc\u81f4 DuplicateMessageException\uff0c\u5f53\u60a8\u5c1d\u8bd5\u5c06\u540e\u7eed\u4f5c\u4e1a\u6392\u5165\u961f\u5217\u65f6\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5b9e\u65bd\u7ec6\u8282<\/h2>\n\n\n\n<p>\u4f7f\u7528 \u7c7b\u3002 \u4f7f\u7528 \u4e2d\u7684\u8fd9\u4e9b\u65b9\u6cd5\u6dfb\u52a0\u4e0d\u540c\u7684\u5b57\u7b26\u4e32\u3001ID \u6216\u6574\u6570\u3002<samp>QueueableDuplicateSignature.Builder<\/samp><samp>QueueableDuplicateSignature.Builder<\/samp><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><samp>addString(inputString)<\/samp><\/li>\n\n\n\n<li><samp>addId(inputId)<\/samp><\/li>\n\n\n\n<li><samp>addInteger(inputInteger)<\/samp><\/li>\n<\/ul>\n\n\n\n<p>\u5f53\u7b7e\u540d\u5177\u6709\u6240\u9700\u7684\u7ec4\u4ef6\u65f6\uff0c\u8c03\u7528\u8be5\u65b9\u6cd5\u5e76\u5b58\u50a8\u552f\u4e00\u7684\u53ef\u6392\u961f\u4f5c\u4e1a \u5728\u5c5e\u6027\u4e2d\u7684\u7b7e\u540d \u7c7b\u3002\u4f7f\u7528\u5c06\u4f5c\u4e1a\u6392\u5165\u961f\u5217 \u5e26\u6709\u53c2\u6570\u7684\u65b9\u6cd5\u3002<samp>.build()<\/samp><samp>DuplicateSignature<\/samp><samp>AsyncOptions<\/samp><samp>System.enqueueJob()<\/samp><samp>AsyncOptions<\/samp><\/p>\n\n\n\n<p>\u8981\u786e\u5b9a\u5927\u5c0f\uff0c \u5269\u4f59\u5927\u5c0f\u548c\u53ef\u6392\u961f\u4f5c\u4e1a\u7b7e\u540d\u7684\u6700\u5927\u5927\u5c0f\uff08\u4ee5\u5b57\u8282\u4e3a\u5355\u4f4d\uff09\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4 \u7c7b\u4e2d\u7684\u65b9\u6cd5\u3002<samp>QueueableDuplicateSignature.Builder<\/samp><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><samp>getSize()<\/samp><\/li>\n\n\n\n<li><samp>getRemainingSize()<\/samp><\/li>\n\n\n\n<li><samp>getMaxSize()<\/samp><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u4f8b\u5b50<\/h2>\n\n\n\n<p>\u6b64\u793a\u4f8b\u4f7f\u7528 UserId \u548c\u5b57\u7b26\u4e32 .<samp>MyQueueable<\/samp><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>AsyncOptions options = new AsyncOptions();\noptions.DuplicateSignature = QueueableDuplicateSignature.Builder()\n                                .addId(UserInfo.getUserId())\n                                .addString('MyQueueable')\n                                .build();\ntry {\n    System.enqueueJob(new MyQueueable(), options);\n} catch (DuplicateMessageException ex) {\n    \/\/Exception is thrown if there is already an enqueued job with the same \n    \/\/signature\n    Assert.areEqual('Attempt to enqueue job with duplicate queueable signature',\n        ex.getMessage());\n}<\/code><\/pre>\n\n\n\n<p>\u6b64\u793a\u4f8b\u4f7f\u7528 ApexClass Id \u548c \u4e00\u4e2a sObject\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>AsyncOptions options = new AsyncOptions();\noptions.DuplicateSignature = QueueableDuplicateSignature.Builder()\n                                .addInteger(System.hashCode(someAccount))\n                                .addId(&#91;SELECT Id FROM ApexClass \n                                     WHERE Name='MyQueueable'].Id)\n                                .build();\nSystem.enqueueJob(new MyQueueable(), options);<\/code><\/pre>\n\n\n\n<h1 class=\"wp-block-heading\">\u4ea4\u6613\u7ec8\u7ed3\u5668<\/h1>\n\n\n\n<p>\u4f7f\u7528\u4e8b\u52a1\u7ec8\u7ed3\u5668\u529f\u80fd\u53ef\u4ee5\u9644\u52a0\u64cd\u4f5c\u3001 \u4f7f\u7528\u63a5\u53e3\uff0c\u4ee5 \u4f7f\u7528 Queueable \u6846\u67b6\u7684\u5f02\u6b65 Apex \u4f5c\u4e1a\u3002\u4e00\u4e2a\u5177\u4f53\u7684\u7528\u4f8b\u662f\u8bbe\u8ba1 \u53ef\u6392\u961f\u4f5c\u4e1a\u5931\u8d25\u65f6\u7684\u6062\u590d\u64cd\u4f5c\u3002<\/p>\n\n\n\n<p><samp>System.Finalizer<\/samp>\u201c\u4e8b\u52a1\u7ec8\u7ed3\u5668\u201d\u529f\u80fd\u4e3a\u60a8\u63d0\u4f9b\u4e86\u76f4\u63a5\u6307\u5b9a \u5f02\u6b65\u4f5c\u4e1a\u6210\u529f\u6216\u5931\u8d25\u65f6\u8981\u6267\u884c\u7684\u64cd\u4f5c\u3002\u4ea4\u6613\u524d \u7ec8\u7ed3\u5668\uff0c\u5bf9\u4e8e\u5f02\u6b65\u4f5c\u4e1a\u5931\u8d25\uff0c\u53ea\u80fd\u6267\u884c\u4ee5\u4e0b\u4e24\u9879\u64cd\u4f5c\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u8f6e\u8be2\u4f7f\u7528 SOQL \u67e5\u8be2\u7684\u72b6\u6001\uff0c\u5982\u679c\u4f5c\u4e1a\u5931\u8d25\uff0c\u5219\u91cd\u65b0\u6392\u961f<samp>AsyncApexJob<\/samp><\/li>\n\n\n\n<li>\u5f53\u6279\u5904\u7406 Apex \u65b9\u6cd5\u9047\u5230\u672a\u5904\u7406\u7684 \u4f8b\u5916<\/li>\n<\/ul>\n\n\n\n<p>\u4f7f\u7528\u4e8b\u52a1\u7ec8\u7ed3\u5668\uff0c\u53ef\u4ee5\u5c06\u64cd\u4f5c\u540e\u5e8f\u5217\u9644\u52a0\u5230 Queueable job\uff0c\u5e76\u6839\u636e\u4f5c\u4e1a\u6267\u884c\u7ed3\u679c\u91c7\u53d6\u76f8\u5173\u64cd\u4f5c\u3002<\/p>\n\n\n\n<p>\u4e00\u4e2a\u53ef\u6392\u961f\u7684\u4f5c\u4e1a\uff0c\u8be5\u4f5c\u4e1a \u7531\u4e8e\u672a\u5904\u7406\u7684\u5f02\u5e38\u800c\u5931\u8d25\uff0c\u53ef\u4ee5\u901a\u8fc7 \u4e8b\u52a1\u7ec8\u7ed3\u5668\u3002\u6b64\u9650\u5236\u9002\u7528\u4e8e\u4e00\u7cfb\u5217\u8fde\u7eed\u7684\u53ef\u6392\u961f\u4f5c\u4e1a \u5931\u8d25\u3002\u5f53 Queueable \u4f5c\u4e1a\u5b8c\u6210\u800c\u6ca1\u6709\u672a\u5904\u7406\u65f6\uff0c\u8ba1\u6570\u5668\u5c06\u91cd\u7f6e \u4f8b\u5916\u3002<\/p>\n\n\n\n<p>\u7ec8\u7ed3\u5668\u53ef\u4ee5\u4f5c\u4e3a\u5185\u90e8\u7c7b\u5b9e\u73b0\u3002\u6b64\u5916\uff0c\u60a8\u8fd8\u53ef\u4ee5 \u4f7f\u7528\u76f8\u540c\u7684\u7c7b\u5b9e\u73b0 Queueable \u548c Finalizer \u63a5\u53e3\u3002\u8fd9 \u53ef\u6392\u961f\u4f5c\u4e1a\u548c\u7ec8\u7ed3\u5668\u5728\u5355\u72ec\u7684 Apex \u548c\u6570\u636e\u5e93\u4e8b\u52a1\u4e2d\u8fd0\u884c\u3002\u4e3a \u4f8b\u5982\uff0cQueueable \u53ef\u4ee5\u5305\u542b DML\uff0c\u7ec8\u7ed3\u5668\u53ef\u4ee5\u5305\u542b REST \u6807\u6ce8\u3002 \u4f7f\u7528\u7ec8\u7ed3\u5668\u4e0d\u7b97\u4f5c\u9488\u5bf9\u6bcf\u65e5\u5f02\u6b65 Apex \u7684\u989d\u5916\u6267\u884c \u9650\u5236\u3002\u540c\u6b65\u8c03\u63a7\u5668\u9650\u5236\u9002\u7528\u4e8e\u7ec8\u7ed3\u5668\u4e8b\u52a1\uff0c\u4f46 \u5f02\u6b65\u9650\u5236\u9002\u7528\u7684\u4ee5\u4e0b\u60c5\u51b5\uff1a<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u603b\u5806\u5927\u5c0f<\/li>\n\n\n\n<li>\u6dfb\u52a0\u5230\u961f\u5217\u7684\u6700\u5927 Apex \u4f5c\u4e1a\u6570<samp>System.enqueueJob<\/samp><\/li>\n\n\n\n<li>\u6bcf\u4e2a Apex \u8c03\u7528\u5141\u8bb8\u7684\u5177\u6709\u6ce8\u91ca\u7684\u65b9\u6cd5\u7684\u6700\u5927\u6570\u91cf<samp>future<\/samp><\/li>\n<\/ul>\n\n\n\n<p>\u6709\u5173\u8c03\u63a7\u5668\u9650\u5236\u7684\u8be6\u7ec6\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605\u6267\u884c\u8c03\u63a7\u5668\u548c\u9650\u5236\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">System.Finalizer \u63a5\u53e3<\/h2>\n\n\n\n<p>\u8be5\u63a5\u53e3\u5305\u62ec\u4ee5\u4e0b\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<p><samp>System.Finalizer<\/samp><samp>execute<\/samp><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>global void execute(System.FinalizerContext <em>ctx<\/em>) {}<\/code><\/pre>\n\n\n\n<p>\u8fd9 \u65b9\u6cd5\u5728\u4e3a\u6bcf\u4e2a\u6392\u961f\u4f5c\u4e1a\u63d0\u4f9b\u7684 FinalizerContext \u5b9e\u4f8b\u4e0a\u8c03\u7528 \u9644\u6709\u7ec8\u7ed3\u5668\u3002\u5728\u8be5\u65b9\u6cd5\u4e2d\uff0c\u60a8\u53ef\u4ee5\u5b9a\u4e49\u5728 \u53ef\u6392\u961f\u4f5c\u4e1a\u3002Apex \u8fd0\u884c\u65f6\u5f15\u64ce\u5c06 \u7684\u5b9e\u4f8b\u4f5c\u4e3a \u53c2\u6570\u6dfb\u52a0\u5230 execute \u65b9\u6cd5\u3002<\/p>\n\n\n\n<p><samp>execute<\/samp><samp>System.FinalizerContext<\/samp><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">System.FinalizerContext \u63a5\u53e3<\/h2>\n\n\n\n<p>\u754c\u9762 \u5305\u542b\u56db\u79cd\u65b9\u6cd5\u3002<\/p>\n\n\n\n<p><samp>System.FinalizerContext<\/samp><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><samp>getAsyncApexJobId<\/samp>\u65b9\u6cd5\uff1a<code>global Id getAsyncApexJobId {}<\/code>\u8fd4\u56de \u4e3a\u5176\u5b9a\u4e49\u6b64\u7ec8\u7ed3\u5668\u7684\u53ef\u6392\u961f\u4f5c\u4e1a\u7684 ID\u3002<\/li>\n\n\n\n<li><samp>getRequestId<\/samp>\u65b9\u6cd5\uff1a<code>global String getRequestId {}<\/code>\u8fd4\u56de \u8bf7\u6c42 ID\uff0c\u552f\u4e00\u6807\u8bc6\u8bf7\u6c42\u7684\u5b57\u7b26\u4e32\uff0c\u53ef\u4ee5\u662f \u4e0e\u4e8b\u4ef6\u76d1\u63a7\u65e5\u5fd7\u76f8\u5173\u8054\u3002\u4e0e AsyncApexJob \u5173\u8054 \u8868\u4e2d\uff0c\u8bf7\u6539\u7528\u8be5\u65b9\u6cd5\u3002Queueable \u4f5c\u4e1a\u548c\u7ec8\u7ed3\u5668\u6267\u884c\u90fd\u5171\u4eab \uff08\u76f8\u540c\uff09\u8bf7\u6c42 ID\u3002<samp>getAsyncApexJobId<\/samp><\/li>\n\n\n\n<li><samp>getResult<\/samp>\u65b9\u6cd5\uff1a<code>global System.ParentJobResult getResult {}<\/code>\u8fd4\u56de \u679a\u4e3e\uff0c \u8868\u793a\u7236\u5f02\u6b65 Apex Queueable \u4f5c\u4e1a\u7684\u7ed3\u679c \u9644\u4e0a\u7ec8\u7ed3\u5668\u3002\u679a\u4e3e\u91c7\u7528\u4ee5\u4e0b\u503c\uff1a\u3001\u3002<samp>System.ParentJobResult<\/samp><samp>SUCCESS<\/samp><samp>UNHANDLED_EXCEPTION<\/samp><\/li>\n\n\n\n<li><samp>getException<\/samp>\u65b9\u6cd5\uff1a<code>global System.Exception getException {}<\/code>\u8fd4\u56de Queueable \u4f5c\u4e1a\u5728\u4ee5\u4e0b\u60c5\u51b5\u4e0b\u5931\u8d25\u7684\u5f02\u5e38\u4e3a \uff0c null \u5426\u5219\u3002<samp>getResult<\/samp><samp>UNHANDLED_EXCEPTION<\/samp><\/li>\n<\/ul>\n\n\n\n<p>\u4f7f\u7528\u8be5\u65b9\u6cd5\u5c06\u7ec8\u7ed3\u5668\u9644\u52a0\u5230\u53ef\u6392\u961f\u4f5c\u4e1a\u3002<\/p>\n\n\n\n<p><samp>System.attachFinalizer<\/samp><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u5b9a\u4e49\u5b9e\u73b0\u63a5\u53e3\u7684\u7c7b\u3002<samp>System.Finalizer<\/samp><\/li>\n\n\n\n<li>\u5728 Queueable \u4f5c\u4e1a\u7684\u65b9\u6cd5\u4e2d\u9644\u52a0\u7ec8\u7ed3\u5668\u3002\u82e5\u8981\u9644\u52a0\u7ec8\u7ed3\u5668\uff0c\u8bf7\u4f7f\u7528 As \u53c2\u6570\uff1a\u5b9e\u73b0 System.Finalizer \u7684\u5b9e\u4f8b\u5316\u7c7b \u63a5\u53e3\u3002<samp>execute<\/samp><samp>System.attachFinalizer<\/samp><code>global void attachFinalizer(Finalizer finalizer) {}<\/code><\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">\u5b9e\u65bd\u7ec6\u8282<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u53ea\u80fd\u5c06\u4e00\u4e2a\u7ec8\u7ed3\u5668\u5b9e\u4f8b\u9644\u52a0\u5230\u4efb\u4f55\u53ef\u6392\u961f\u4f5c\u4e1a\u3002<\/li>\n\n\n\n<li>\u60a8\u53ef\u4ee5\u5c06\u5355\u4e2a\u5f02\u6b65 Apex \u4f5c\u4e1a\uff08Queueable\u3001Future \u6216 Batch\uff09\u52a0\u5165\u961f\u5217 \u5728\u7ec8\u7ed3\u5668\u7684\u65b9\u6cd5\u5b9e\u73b0\u4e2d\u3002<samp>execute<\/samp><\/li>\n\n\n\n<li>\u7ec8\u7ed3\u5668\u5b9e\u73b0\u4e2d\u5141\u8bb8\u4f7f\u7528\u6807\u6ce8\u3002<\/li>\n\n\n\n<li>\u7ec8\u7ed3\u5668\u6846\u67b6\u4f7f\u7528\u7ec8\u7ed3\u5668\u5bf9\u8c61\u7684\u72b6\u6001\uff08\u5982\u679c\u9644\u52a0\uff09 \u5728\u53ef\u6392\u961f\u6267\u884c\u7ed3\u675f\u65f6\u3002\u7ec8\u7ed3\u5668\u72b6\u6001\u7684\u7a81\u53d8\uff0c\u5728 \u5b83\u662f\u9644\u52a0\u7684\uff0c\u56e0\u6b64\u662f\u53d7\u652f\u6301\u7684\u3002<\/li>\n\n\n\n<li>\u58f0\u660e\u7684\u53d8\u91cf\u5305\u62ec \u88ab\u5e8f\u5217\u5316\u548c\u53cd\u5e8f\u5217\u5316\u5ffd\u7565\uff0c\u56e0\u6b64\u4e0d\u4f1a\u4fdd\u7559\u5728 \u4e8b\u52a1\u7ec8\u7ed3\u5668\u3002<samp>transient<\/samp><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u65e5\u5fd7\u8bb0\u5f55\u7ec8\u7ed3\u5668\u793a\u4f8b<\/h2>\n\n\n\n<p>\u6b64\u793a\u4f8b\u6f14\u793a\u5982\u4f55\u4f7f\u7528\u4e8b\u52a1\u7ec8\u7ed3\u5668\u6765\u8bb0\u5f55\u6765\u81ea a \u53ef\u6392\u961f\u4f5c\u4e1a\uff0c\u65e0\u8bba\u4f5c\u4e1a\u662f\u6210\u529f\u8fd8\u662f\u5931\u8d25\u3002\u8fd9 \u6b64\u5904\u7684 LoggingFinalizer \u7c7b\u5b9e\u73b0\u4e86 Queueable \u548c Finalizer \u63a5\u53e3\u3002\u8fd9 \u53ef\u6392\u961f\u5b9e\u73b0\u5b9e\u4f8b\u5316\u7ec8\u7ed3\u5668\uff0c\u9644\u52a0\u5b83\uff0c\u7136\u540e\u8c03\u7528 addLog\uff08\uff09 \u65b9\u6cd5\u6765\u7f13\u51b2\u65e5\u5fd7\u6d88\u606f\u3002\u7ec8\u7ed3\u5668\u5b9e\u73b0 LoggingFinalizer \u5305\u62ec\u5141\u8bb8\u7f13\u51b2\u7684 addLog\uff08message\uff0c source\uff09 \u65b9\u6cd5 \u5c06 Queueable \u4f5c\u4e1a\u4e2d\u7684\u6d88\u606f\u8bb0\u5f55\u5230\u7ec8\u7ed3\u5668\u7684\u72b6\u6001\u3002\u5f53 Queueable \u4f5c\u4e1a \u5b8c\u6210\u540e\uff0c\u7ec8\u7ed3\u5668\u5b9e\u4f8b\u5c06\u63d0\u4ea4\u7f13\u51b2\u7684\u65e5\u5fd7\u3002\u7ec8\u7ed3\u5668\u72b6\u6001\u4e3a \u5373\u4f7f Queueable \u4f5c\u4e1a\u5931\u8d25\uff0c\u4e5f\u53ef\u4ee5\u4fdd\u7559\uff0c\u5e76\u4e14\u53ef\u4ee5\u5728 DML \u4e2d\u4f7f\u7528 \u7ec8\u7ed3\u5668\u5b9e\u73b0\u6216\u6267\u884c\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class LoggingFinalizer implements Finalizer, Queueable {\n\n  \/\/ Queueable implementation\n  \/\/ A queueable job that uses LoggingFinalizer to buffer the log\n  \/\/ and commit upon exit, even if the queueable execution fails\n\n    public void execute(QueueableContext ctx) {\n        String jobId = '' + ctx.getJobId();\n        System.debug('Begin: executing queueable job: ' + jobId);\n        try {\n            \/\/ Create an instance of LoggingFinalizer and attach it\n            LoggingFinalizer f = new LoggingFinalizer();\n            System.attachFinalizer(f);\n\n            \/\/ While executing the job, log using LoggingFinalizer.addLog()\n            \/\/ Note that addlog() modifies the Finalizer's state after it is attached \n            DateTime start = DateTime.now();\n            f.addLog('About to do some work...', jobId);\n\n            while (true) {\n              \/\/ Results in limit error\n            }\n        } catch (Exception e) {\n            System.debug('Error executing the job &#91;' + jobId + ']: ' + e.getMessage());\n        } finally {\n            System.debug('Completed: execution of queueable job: ' + jobId);\n        }\n    }\n\n  \/\/ Finalizer implementation\n  \/\/ Logging finalizer provides a public method addLog(message,source) that allows buffering log lines from the Queueable job.\n  \/\/ When the Queueable job completes, regardless of success or failure, the LoggingFinalizer instance commits this buffered log.\n  \/\/ Custom object LogMessage__c has four custom fields-see addLog() method.\n\n    \/\/ internal log buffer\n    private List&lt;LogMessage__c&gt; logRecords = new List&lt;LogMessage__c&gt;();\n\n    public void execute(FinalizerContext ctx) {\n        String parentJobId = '' + ctx.getAsyncApexJobId();\n        System.debug('Begin: executing finalizer attached to queueable job: ' + parentJobId);\n\n        \/\/ Update the log records with the parent queueable job id\n        System.Debug('Updating job id on ' + logRecords.size() + ' log records');\n        for (LogMessage__c log : logRecords) {\n            log.Request__c = parentJobId; \/\/ or could be ctx.getRequestId()\n        }\n        \/\/ Commit the buffer\n        System.Debug('committing log records to database');\n        Database.insert(logRecords, false);\n\n        if (ctx.getResult() == ParentJobResult.SUCCESS) {\n            System.debug('Parent queueable job &#91;' + parentJobId + '] completed successfully.');\n        } else {\n            System.debug('Parent queueable job &#91;' + parentJobId + '] failed due to unhandled exception: ' + ctx.getException().getMessage());\n            System.debug('Enqueueing another instance of the queueable...');\n        }\n        System.debug('Completed: execution of finalizer attached to queueable job: ' + parentJobId);\n    }\n\n    public void addLog(String message, String source) {\n        \/\/ append the log message to the buffer\n        logRecords.add(new LogMessage__c(\n            DateTime__c = DateTime.now(),\n            Message__c = message,\n            Request__c = 'setbeforecommit',\n            Source__c = source\n        ));\n    }\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u91cd\u8bd5\u53ef\u6392\u961f\u793a\u4f8b<\/h2>\n\n\n\n<p>\u6b64\u793a\u4f8b\u6f14\u793a\u5982\u4f55\u5728\u7ec8\u7ed3\u5668\u4e2d\u5c06\u5931\u8d25\u7684 Queueable \u4f5c\u4e1a\u91cd\u65b0\u6392\u961f\u3002 \u5b83\u8fd8\u663e\u793a\u4f5c\u4e1a\u53ef\u4ee5\u91cd\u65b0\u6392\u961f\uff0c\u6700\u591a\u53ef\u6392\u961f\u94fe\u63a5\u9650\u5236\u4e3a 5 \u91cd\u8bd5\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class RetryLimitDemo implements Finalizer, Queueable {\n\n  \/\/ Queueable implementation\n  public void execute(QueueableContext ctx) {\n    String jobId = '' + ctx.getJobId();\n    System.debug('Begin: executing queueable job: ' + jobId);\n    try {\n        Finalizer finalizer = new RetryLimitDemo();\n        System.attachFinalizer(finalizer);\n        System.debug('Attached finalizer');\n        Integer accountNumber = 1;\n        while (true) { \/\/ results in limit error\n          Account a = new Account();\n          a.Name = 'Account-Number-' + accountNumber;\n          insert a;\n          accountNumber++;\n        }\n    } catch (Exception e) {\n        System.debug('Error executing the job &#91;' + jobId + ']: ' + e.getMessage());\n    } finally {\n        System.debug('Completed: execution of queueable job: ' + jobId);\n    }\n  }\n\n  \/\/ Finalizer implementation\n  public void execute(FinalizerContext ctx) {\n    String parentJobId = '' + ctx.getAsyncApexJobId();\n    System.debug('Begin: executing finalizer attached to queueable job: ' + parentJobId);\n    if (ctx.getResult() == ParentJobResult.SUCCESS) {\n        System.debug('Parent queueable job &#91;' + parentJobId + '] completed successfully.');\n    } else {\n        System.debug('Parent queueable job &#91;' + parentJobId + '] failed due to unhandled exception: ' + ctx.getException().getMessage());\n        System.debug('Enqueueing another instance of the queueable...');\n        String newJobId = '' + System.enqueueJob(new RetryLimitDemo()); \/\/ This call fails after 5 times when it hits the chaining limit\n        System.debug('Enqueued new job: ' + newJobId);\n    }\n    System.debug('Completed: execution of finalizer attached to queueable job: ' + parentJobId);\n  }\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u6700\u4f73\u5b9e\u8df5<\/h2>\n\n\n\n<p>\u6211\u4eec\u6566\u4fc3 ISV \u5728\u4f7f\u7528\u5177\u6709\u72b6\u6001\u7a81\u53d8\u7684\u5168\u5c40\u7ec8\u7ed3\u5668\u65f6\u8981\u8c28\u614e \u5305\u4e2d\u7684\u65b9\u6cd5\u3002\u5982\u679c\u8ba2\u9605\u8005\u7ec4\u7ec7\u7684\u5b9e\u73b0\u5728 \u5168\u5c40\u7ec8\u7ed3\u5668\uff0c\u53ef\u80fd\u4f1a\u5bfc\u81f4\u610f\u5916\u884c\u4e3a\u3002\u68c0\u67e5\u6240\u6709 \u72b6\u6001\u7a81\u53d8\u65b9\u6cd5\uff0c\u7528\u4e8e\u67e5\u770b\u5b83\u4eec\u5982\u4f55\u5f71\u54cd\u7ec8\u7ed3\u5668\u72b6\u6001\u548c\u6574\u4f53 \u884c\u4e3a\u3002<\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u4e8b\u52a1\u7ec8\u7ed3\u5668\u9519\u8bef\u6d88\u606f<\/h1>\n\n\n\n<p>\u901a\u8fc7\u5206\u6790\u8bed\u4e49\u548c\u8fd0\u884c\u65f6\u95ee\u9898\u6765\u6392\u67e5\u8fd9\u4e9b\u95ee\u9898 \u9519\u8bef\u6d88\u606f\u3002\u4e0b\u8868\u63d0\u4f9b\u6709\u5173 Apex \u8c03\u8bd5\u65e5\u5fd7\u4e2d\u9519\u8bef\u6d88\u606f\u7684\u4fe1\u606f\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u9519\u8bef\u4fe1\u606f<\/th><th>\u5931\u8d25\u7684\u4e0a\u4e0b\u6587<\/th><th>\u5931\u8d25\u539f\u56e0<\/th><\/tr><\/thead><tbody><tr><td>\u4e0d\u80fd\u5c06\u591a\u4e2a\u7ec8\u7ed3\u5668\u9644\u52a0\u5230\u540c\u4e00\u4e2a\u5f02\u6b65Apex \u5de5\u4f5c<\/td><td>\u53ef\u6392\u961f\u7684\u6267\u884c<\/td><td><samp>System.attachFinalizer()<\/samp>\u88ab\u591a\u6b21\u8c03\u7528 \u5728\u540c\u4e00\u4e2a Queueable \u5b9e\u4f8b\u4e2d\u3002<\/td><\/tr><tr><td>\u7c7b {0} \u5fc5\u987b\u5b9e\u73b0\u7ec8\u7ed3\u5668\u63a5\u53e3<\/td><td>\u53ef\u6392\u961f\u7684\u6267\u884c<\/td><td>\u5b9e\u4f8b\u5316\u7684\u7c7b\u53c2\u6570 to \u4e0d\u5b9e\u73b0\u63a5\u53e3\u3002<samp>System.attachFinalizer()<\/samp><samp>System.Finalizer<\/samp><\/td><\/tr><tr><td>System.attachFinalizer\uff08Finalizer\uff09 \u662f\u4e0d\u5141\u8bb8\u7684 \u4e0a\u4e0b\u6587<\/td><td>\u4e0d\u53ef\u6392\u961f\u7684\u6267\u884c<\/td><td><samp>System.attachFinalizer()<\/samp>\u5728 Apex \u4e2d\u8c03\u7528 \u672a\u6267\u884c Queueable \u5b9e\u4f8b\u7684\u4e0a\u4e0b\u6587\u3002<\/td><\/tr><tr><td>\u53c2\u6570\u6570\u91cf\u65e0\u6548<\/td><td>\u53ef\u6392\u961f\u7684\u6267\u884c<\/td><td>\u65e0\u6548\u7684\u53c2\u6570\u6570<samp>System.attachFinalizer()<\/samp><\/td><\/tr><tr><td>\u53c2\u6570\u4e0d\u80fd\u4e3a null<\/td><td>\u53ef\u6392\u961f\u7684\u6267\u884c<\/td><td><samp>System.attachFinalizer()<\/samp>\u4ee5 null \u8c03\u7528 \u53c2\u6570\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u5982\u679c\u60a8\u6709\u9002\u7528\u4e8e Salesforce \u7684\u00a0Splunk \u9644\u52a0\u7ec4\u4ef6\uff0c\u5219\u53ef\u4ee5\u5206\u6790\u9519\u8bef Splunk \u65e5\u5fd7\u4e2d\u7684\u6d88\u606f\u3002\u4e0b\u8868\u63d0\u4f9b\u6709\u5173 Splunk \u65e5\u5fd7\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u9519\u8bef\u4fe1\u606f<\/th><th>\u5931\u8d25\u539f\u56e0<\/th><\/tr><\/thead><tbody><tr><td>\u5904\u7406\u53ef\u6392\u961f\u4f5c\u4e1a ID \u7684\u7ec8\u7ed3\u5668\u65f6\u51fa\u9519\uff1a {0}<\/td><td>\u6267\u884c\u7ec8\u7ed3\u5668\u65f6\u51fa\u73b0\u8fd0\u884c\u65f6\u9519\u8bef\u3002\u6b64\u9519\u8bef\u53ef\u4ee5\u662f \u672a\u5904\u7406\u7684\u53ef\u6355\u83b7\u5f02\u5e38\u6216\u4e0d\u53ef\u6355\u83b7\u7684\u5f02\u5e38\uff08\u4f8b\u5982 \u4e00\u4e2a LimitException\uff09\uff0c\u6216\u8005\u4e0d\u592a\u5e38\u89c1\u7684\u662f\u5185\u90e8\u7cfb\u7edf \u9519\u8bef\u3002<\/td><\/tr><tr><td>\u5904\u7406\u7ec8\u7ed3\u5668\uff08\u7c7b\u540d\uff1a{0}\uff09\u65f6\u51fa\u9519 \u53ef\u6392\u961f\u4f5c\u4e1a ID\uff1a{1}\uff08\u53ef\u6392\u961f\u7c7b ID\uff1a{2}\uff09<\/td><td>\u6267\u884c\u7ec8\u7ed3\u5668\u65f6\u51fa\u73b0\u8fd0\u884c\u65f6\u9519\u8bef\u3002\u6b64\u9519\u8bef\u53ef\u4ee5\u662f \u672a\u5904\u7406\u7684\u53ef\u6355\u83b7\u5f02\u5e38\u6216\u4e0d\u53ef\u6355\u83b7\u7684\u5f02\u5e38\uff08\u4f8b\u5982 \u4e00\u4e2a LimitException\uff09\uff0c\u6216\u8005\u4e0d\u592a\u5e38\u89c1\u7684\u662f\u5185\u90e8\u7cfb\u7edf \u9519\u8bef\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h1 class=\"wp-block-heading\">Apex \u8c03\u5ea6\u7a0b\u5e8f<\/h1>\n\n\n\n<p>\u8981\u8c03\u7528 Apex \u7c7b\u5728\u7279\u5b9a\u65f6\u95f4\u8fd0\u884c\uff0c\u8bf7\u9996\u5148\u5b9e\u73b0\u8be5\u7c7b\u7684\u63a5\u53e3\uff0c\u7136\u540e \u4f7f\u7528 Salesforce \u7528\u6237\u4e2d\u7684\u201c\u8ba1\u5212Apex\u201d\u9875\u9762\u6307\u5b9a\u8ba1\u5212 \u63a5\u53e3\u6216\u65b9\u6cd5\u3002<samp>SchedulableSystem.schedule<\/samp><\/p>\n\n\n\n<p>\u91cd\u8981<\/p>\n\n\n\n<p>Salesforce \u8ba1\u5212\u5728\u6307\u5b9a\u65f6\u95f4\u6267\u884c\u7c7b\u3002 \u5b9e\u9645\u6267\u884c\u53ef\u80fd\u4f1a\u6839\u636e\u670d\u52a1\u53ef\u7528\u6027\u5ef6\u8fdf\u3002<\/p>\n\n\n\n<p id=\"ClassSchedulerLimit\"><a><\/a>\u60a8\u4e00\u6b21\u53ea\u80fd\u6709 100 \u4e2a\u8ba1\u5212\u7684 Apex \u4f5c\u4e1a\u3002\u60a8\u53ef\u4ee5\u8bc4\u4f30\u60a8\u5f53\u524d\u7684 \u901a\u8fc7\u5728 Salesforce \u4e2d\u67e5\u770b\u201c\u8ba1\u5212\u4f5c\u4e1a\u201d\u9875\u9762\u5e76\u4f7f\u7528 \u7c7b\u578b\u8fc7\u6ee4\u5668\u7b49\u4e8e\u201cScheduled Apex\u201d\u3002\u8fd8\u53ef\u4ee5\u4ee5\u7f16\u7a0b\u65b9\u5f0f\u67e5\u8be2 CronTrigger \u548c CronJobDetail \u5bf9\u8c61\u6765\u83b7\u53d6\u8ba1\u5212\u7684 Apex \u8ba1\u6570 \u5de5\u4f5c\u3002<\/p>\n\n\n\n<p><a><\/a>\u5982\u679c\u51fa\u73b0\u4ee5\u4e0b\u60c5\u51b5\uff0c\u8bf7\u683c\u5916\u5c0f\u5fc3 \u60a8\u8ba1\u5212\u4ece\u89e6\u53d1\u5668\u5b89\u6392\u8bfe\u7a0b\u3002\u60a8\u5fc5\u987b\u80fd\u591f \u4fdd\u8bc1\u89e6\u53d1\u5668\u6dfb\u52a0\u7684\u8ba1\u5212\u7c7b\u4e0d\u4f1a\u8d85\u8fc7\u9650\u5236\u3002\u5728 \u7279\u522b\u662f\uff0c\u8003\u8651 API \u6279\u91cf\u66f4\u65b0\u3001\u5bfc\u5165\u5411\u5bfc\u3001\u6279\u91cf\u8bb0\u5f55\u66f4\u6539 \u7528\u6237\u754c\u9762\uff0c\u4ee5\u53ca\u53ef\u4ee5\u5728 \u65f6\u95f4\u3002<\/p>\n\n\n\n<p>\u5982\u679c Apex \u7c7b\u6709\u4e00\u4e2a\u6216\u591a\u4e2a\u6d3b\u52a8\u8ba1\u5212\u4f5c\u4e1a\uff0c \u60a8\u65e0\u6cd5\u901a\u8fc7 Salesforce \u7528\u6237\u754c\u9762\u3002\u4f46\u662f\uff0c\u60a8\u53ef\u4ee5\u542f\u7528\u90e8\u7f72\u4ee5\u4f7f\u7528 \u4f7f\u7528\u5143\u6570\u636e API \u6fc0\u6d3b\u8ba1\u5212\u4f5c\u4e1a\uff08\u4f8b\u5982\uff0c\u4f7f\u7528 Salesforce \u65f6\uff09 Visual Studio Code \u7684\u6269\u5c55\uff09\u3002\u8bf7\u53c2\u9605\u4e2d\u7684\u201c\u66f4\u6539\u96c6\u7684\u90e8\u7f72\u8fde\u63a5\u201d Salesforce \u5e2e\u52a9\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><a><\/a>\u5b9e\u73b0&nbsp;Schedulable&nbsp;\u63a5\u53e3<\/h2>\n\n\n\n<p>\u8981\u5b89\u6392 Apex \u7c7b\u5b9a\u671f\u8fd0\u884c\uff0c\u9996\u5148 \u7f16\u5199\u4e00\u4e2a\u5b9e\u73b0 Salesforce \u63d0\u4f9b\u7684\u63a5\u53e3\u7684 Apex \u7c7b\u3002<samp>Schedulable<\/samp><\/p>\n\n\n\n<p>\u8c03\u5ea6\u7a0b\u5e8f\u4ee5 \u7cfb\u7edf &#8211; \u6267\u884c\u6240\u6709\u7c7b\uff0c\u65e0\u8bba\u7528\u6237\u662f\u5426\u5177\u6709\u6267\u884c\u6743\u9650 \u7c7b\u4e0e\u5426\u3002<\/p>\n\n\n\n<p>\u76d1\u89c6\u6216\u505c\u6b62\u8ba1\u5212\u7684 Apex \u4f5c\u4e1a\u7684\u6267\u884c \u4f7f\u7528 Salesforce \u7528\u6237\u754c\u9762\uff0c\u4ece\u201c\u8bbe\u7f6e\u201d\u4e2d\u8f93\u5165\u201c\u5feb\u901f\u67e5\u627e\u201d\u6846\uff0c\u7136\u540e\u9009\u62e9<strong>\u201c\u8ba1\u5212\u4f5c\u4e1a<\/strong>\u201d\u3002<kbd>Scheduled Jobs<\/kbd>\u8be5\u63a5\u53e3\u5305\u542b\u4e00\u4e2a\u5fc5\u987b\u5b9e\u73b0\u7684\u65b9\u6cd5\u3002<\/p>\n\n\n\n<p><samp>Schedulable<\/samp><samp>execute<\/samp><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>global void execute(SchedulableContext <em>sc<\/em>){}<\/code><\/pre>\n\n\n\n<p>\u8fd9 \u5b9e\u73b0\u7684\u65b9\u6cd5\u5fc5\u987b\u58f0\u660e\u4e3a \u6216 \u3002<samp>global<\/samp><samp>public<\/samp>\u7528 \u6b64\u65b9\u6cd5\u5b9e\u4f8b\u5316\u8981\u8c03\u5ea6\u7684\u7c7b\u3002<\/p>\n\n\n\n<p>\u63d0\u793a<\/p>\n\n\n\n<p><a><\/a>\u867d\u7136\u8fd9\u662f\u53ef\u80fd\u7684 \u5728\u65b9\u6cd5\u4e2d\u8fdb\u884c\u989d\u5916\u7684\u5904\u7406\uff0c\u6211\u4eec\u5efa\u8bae\u6240\u6709\u5904\u7406\u90fd\u5fc5\u987b\u91c7\u53d6 \u653e\u5728\u4e00\u4e2a\u5355\u72ec\u7684\u73ed\u7ea7\u4e2d\u3002<samp>execute<\/samp><\/p>\n\n\n\n<p>\u4ee5\u4e0b\u793a\u4f8b \u5b9e\u73b0 \u7c7b\u79f0\u4e3a\uff1a<samp>Schedulable<\/samp><samp>MergeNumbers<\/samp><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>global class ScheduledMerge implements Schedulable {\n   global void execute(SchedulableContext SC) {\n      MergeNumbers M = new MergeNumbers(); \n   }\n}<\/code><\/pre>\n\n\n\n<p>\u8981\u5b9e\u73b0\u8be5\u7c7b\uff0c\u8bf7\u5728 Developer \u4e2d\u6267\u884c\u6b64\u793a\u4f8b \u5b89\u6170\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ScheduledMerge m = new ScheduledMerge();\nString sch = '20 30 8 10 2 ?';\nString jobID = System.schedule('Merge Job', sch, m);<\/code><\/pre>\n\n\n\n<p>\u60a8\u8fd8\u53ef\u4ee5\u4f7f\u7528 \u4e0e\u6279\u5904\u7406 Apex \u7684\u63a5\u53e3 \u7c7b\u3002\u4e0b\u9762\u7684\u793a\u4f8b\u5b9e\u73b0\u540d\u4e3a \u7684\u6279\u5904\u7406 Apex \u7c7b\u7684\u63a5\u53e3\uff1a<samp>Schedulable<\/samp><samp>Schedulable<\/samp><samp>Batchable<\/samp><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>global class ScheduledBatchable implements Schedulable {\n   global void execute(SchedulableContext sc) {\n      Batchable b = new Batchable(); \n      Database.executeBatch(b);\n   }\n}<\/code><\/pre>\n\n\n\n<p>\u8ba1\u5212\u6279\u5904\u7406\u4f5c\u4e1a\u7684\u66f4\u7b80\u5355\u65b9\u6cd5\u662f\u8c03\u7528\u8be5\u65b9\u6cd5\uff0c\u800c\u65e0\u9700\u5b9e\u73b0\u63a5\u53e3\u3002<samp>System.scheduleBatchSchedulable<\/samp><\/p>\n\n\n\n<p id=\"getTriggerId\">\u5728\u4ee5\u4e0b\u60c5\u51b5\u4e0b\u4f7f\u7528 SchedulableContext \u5bf9\u8c61\u8ddf\u8e2a\u8ba1\u5212\u4f5c\u4e1a \u8fd9\u662f\u9884\u5b9a\u7684\u3002SchedulableContext \u65b9\u6cd5\u8fd4\u56de\u5173\u8054\u7684\u00a0CronTrigger\u00a0\u5bf9\u8c61\u7684 ID \u5c06\u6b64\u8ba1\u5212\u4f5c\u4e1a\u4f5c\u4e3a\u5b57\u7b26\u4e32\u3002\u60a8\u53ef\u4ee5\u67e5\u8be2\u4ee5\u8ddf\u8e2a\u8ba1\u5212\u4f5c\u4e1a\u7684\u8fdb\u5ea6\u3002<samp>getTriggerIDCronTrigger<\/samp><\/p>\n\n\n\n<p>\u81ea \u505c\u6b62\u6267\u884c\u5df2\u8ba1\u5212\u7684\u4f5c\u4e1a\u65f6\uff0c\u8bf7\u4f7f\u7528\u8be5\u65b9\u6cd5\u548c\u8be5\u65b9\u6cd5\u8fd4\u56de\u7684 ID\u3002<samp>System.abortJob<\/samp><samp>getTriggerID<\/samp><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u4f7f\u7528\u67e5\u8be2\u8ddf\u8e2a\u8ba1\u5212\u4f5c\u4e1a\u7684\u8fdb\u5ea6<\/h2>\n\n\n\n<p>\u8ba1\u5212 Apex \u4f5c\u4e1a\u540e\uff0c\u60a8\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u5f0f\u83b7\u53d6\u6709\u5173\u5b83\u7684\u8be6\u7ec6\u4fe1\u606f \u5728 CronTrigger \u4e0a\u8fd0\u884c SOQL \u67e5\u8be2\u3002\u60a8\u53ef\u4ee5\u68c0\u7d22\u4f5c\u4e1a\u7684\u6b21\u6570 run\uff0c\u4ee5\u53ca\u8ba1\u5212\u518d\u6b21\u8fd0\u884c\u4f5c\u4e1a\u7684\u65e5\u671f\u548c\u65f6\u95f4\uff0c\u5982\u4e0b\u6240\u793a \u4f8b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CronTrigger ct = \n    &#91;SELECT TimesTriggered, NextFireTime\n    FROM CronTrigger WHERE Id = :jobID];<\/code><\/pre>\n\n\n\n<p>\u524d\u9762\u7684\u793a\u4f8b\u5047\u5b9a\u60a8\u6709\u4e00\u4e2a\u53d8\u91cf\uff0c\u7528\u4e8e\u4fdd\u5b58\u4f5c\u4e1a\u7684 ID\u3002\u8be5\u65b9\u6cd5\u8fd4\u56de\u4f5c\u4e1a ID\u3002\u5982\u679c\u8981\u6267\u884c\u6b64\u67e5\u8be2 \u5728\u60a8\u7684 Schedulable \u65b9\u6cd5\u4e2d \u7c7b\uff0c\u53ef\u4ee5\u901a\u8fc7\u8c03\u7528 SchedulableContext \u53c2\u6570\u6765\u83b7\u53d6\u5f53\u524d\u4f5c\u4e1a\u7684 ID \u53d8\u91cf\u3002\u5047\u8bbe\u6b64\u53d8\u91cf\u540d\u79f0\u4e3a \uff0c\u5219 \u4fee\u6539\u540e\u7684\u793a\u4f8b\u53d8\u4e3a\uff1a<samp>jobID<\/samp><samp>System.schedule<\/samp><samp>execute<\/samp><samp>getTriggerId<\/samp><samp>sc<\/samp><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CronTrigger ct = \n    &#91;SELECT TimesTriggered, NextFireTime\n    FROM CronTrigger WHERE Id = :sc.getTriggerId()];<\/code><\/pre>\n\n\n\n<p>\u8fd8\u53ef\u4ee5\u4ece CronJobDetail \u83b7\u53d6\u4f5c\u4e1a\u7684\u540d\u79f0\u548c\u4f5c\u4e1a\u7c7b\u578b \u4e0e CronTrigger \u8bb0\u5f55\u5173\u8054\u7684\u8bb0\u5f55\u3002\u4e3a\u6b64\uff0c\u8bf7\u5728 Cron\u89e6\u53d1\u5668\u3002\u6b64\u793a\u4f8b\u68c0\u7d22\u5177\u6709\u4f5c\u4e1a\u540d\u79f0\u7684\u6700\u65b0 CronTrigger \u8bb0\u5f55 \u5e76\u4ece CronJobDetail \u952e\u5165\u3002<samp>CronJobDetail<\/samp><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CronTrigger job = \n    &#91;SELECT Id, CronJobDetail.Id, CronJobDetail.Name, CronJobDetail.JobType \n    FROM CronTrigger ORDER BY CreatedDate DESC LIMIT 1];<\/code><\/pre>\n\n\n\n<p>\u6216\u8005\uff0c\u60a8\u53ef\u4ee5\u76f4\u63a5\u67e5\u8be2 CronJobDetail \u4ee5\u83b7\u53d6\u4f5c\u4e1a\u7684\u540d\u79f0\u548c \u7c7b\u578b\u3002\u4e0b\u4e00\u4e2a\u793a\u4f8b\u83b7\u53d6 CronTrigger \u8bb0\u5f55\u7684\u4f5c\u4e1a\u540d\u79f0\u548c\u7c7b\u578b \u5728\u524d\u9762\u7684\u793a\u4f8b\u4e2d\u67e5\u8be2\u3002\u83b7\u53d6\u5bf9\u5e94\u7684 CronJobDetail \u8bb0\u5f55 ID \u901a\u8fc7\u8868\u8fbe\u5f0f CronTrigger \u8bb0\u5f55\u3002<samp>CronJobDetail.Id<\/samp><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>CronJobDetail ctd = \n    &#91;SELECT Id, Name, JobType \n    FROM CronJobDetail WHERE Id = :job.CronJobDetail.Id];<\/code><\/pre>\n\n\n\n<p>\u83b7\u53d6\u6240\u6709 Apex \u8ba1\u5212\u4f5c\u4e1a\uff08\u4e0d\u5305\u62ec\u6240\u6709\u5176\u4ed6\u8ba1\u5212\u4f5c\u4e1a\uff09\u7684\u603b\u6570 \u7c7b\u578b\uff0c\u8bf7\u6267\u884c\u4ee5\u4e0b\u67e5\u8be2\u3002\u8bf7\u6ce8\u610f\uff0c\u4e3a\u4f5c\u4e1a\u7c7b\u578b\u6307\u5b9a\u4e86\u503c\u201c7\u201d\u3002 \u8fd9\u4e0e\u8ba1\u5212\u7684 Apex \u4f5c\u4e1a\u7c7b\u578b\u76f8\u5bf9\u5e94\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>SELECT COUNT() FROM CronTrigger WHERE CronJobDetail.JobType = '7'<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><a><\/a>\u6d4b\u8bd5 Apex \u8c03\u5ea6<\/h2>\n\n\n\n<p>\u8fd9 \u4ee5\u4e0b\u662f\u5982\u4f55\u4f7f\u7528 Apex \u8c03\u5ea6\u7a0b\u5e8f\u8fdb\u884c\u6d4b\u8bd5\u7684\u793a\u4f8b\u3002<\/p>\n\n\n\n<p>\u8be5\u65b9\u6cd5\u542f\u52a8\u5f02\u6b65 \u8fc7\u7a0b\u3002\u6d4b\u8bd5\u8ba1\u5212\u7684 Apex \u65f6\uff0c\u5fc5\u987b\u786e\u4fdd\u8ba1\u5212\u7684\u4f5c\u4e1a\u662f \u5728\u5bf9\u7167\u7ed3\u679c\u8fdb\u884c\u6d4b\u8bd5\u4e4b\u524d\u5b8c\u6210\u3002\u5728\u7ee7\u7eed\u6d4b\u8bd5\u4e4b\u524d\uff0c\u8bf7\u4f7f\u7528\u6d4b\u8bd5\u65b9\u6cd5\u548c\u65b9\u6cd5\u4ee5\u786e\u4fdd\u5176\u5b8c\u6210\u3002\u8fdb\u884c\u7684\u6240\u6709\u5f02\u6b65\u8c03\u7528 \u5728\u65b9\u6cd5\u88ab\u6536\u96c6\u540e \u7cfb\u7edf\u3002\u6267\u884c\u65f6\uff0c\u6240\u6709 \u5f02\u6b65\u8fdb\u7a0b\u662f\u540c\u6b65\u8fd0\u884c\u7684\u3002\u5982\u679c\u672a\u5728 \u548c \u65b9\u6cd5\u4e2d\u5305\u542b\u8be5\u65b9\u6cd5\uff0c\u5219\u8ba1\u5212\u4f5c\u4e1a\u5c06\u5728\u6d4b\u8bd5\u65b9\u6cd5\u7ed3\u675f\u65f6\u6267\u884c \u5bf9\u4e8e\u4f7f\u7528 Salesforce API \u7248\u672c 25.0 \u53ca\u66f4\u9ad8\u7248\u672c\u4fdd\u5b58\u7684 Apex\uff0c\u4f46\u5728\u65e9\u671f\u7248\u672c\u4e2d\u5219\u4e0d\u7136\u3002<samp>System.schedule<\/samp><samp>startTest<\/samp><samp>stopTest<\/samp><samp>System.schedule<\/samp><samp>startTest<\/samp><samp>stopTest<\/samp><samp>System.schedule<\/samp><samp>startTest<\/samp><samp>stopTest<\/samp>\u6b64\u793a\u4f8b\u5b9a\u4e49\u8981\u6d4b\u8bd5\u7684\u7c7b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>global class TestScheduledApexFromTestMethod implements Schedulable {\n\n\/\/ This test runs a scheduled job at midnight Sept. 3rd. 2042\n\n   public static String CRON_EXP = '0 0 0 3 9 ? 2042';\n   \n   global void execute(SchedulableContext ctx) {\n      CronTrigger ct = &#91;SELECT Id, CronExpression, TimesTriggered, NextFireTime\n                FROM CronTrigger WHERE Id = :ctx.getTriggerId()];\n\n      System.assertEquals(CRON_EXP, ct.CronExpression);\n      System.assertEquals(0, ct.TimesTriggered);\n      System.assertEquals('2042-09-03 00:00:00', String.valueOf(ct.NextFireTime));\n\n      Account a = &#91;SELECT Id, Name FROM Account WHERE Name = \n                  'testScheduledApexFromTestMethod'];\n      a.name = 'testScheduledApexFromTestMethodUpdated';\n      update a;\n   }   \n}<\/code><\/pre>\n\n\n\n<p>\u4ee5\u4e0b\u6d4b\u8bd5 \u7c7b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@istest\nclass TestClass {\n\n   static testmethod void test() {\n   Test.startTest();\n\n      Account a = new Account();\n      a.Name = 'testScheduledApexFromTestMethod';\n      insert a;\n\n      \/\/ Schedule the test job\n\n      String jobId = System.schedule('testBasicScheduledApex',\n      TestScheduledApexFromTestMethod.CRON_EXP, \n         new TestScheduledApexFromTestMethod());\n\n      \/\/ Get the information from the CronTrigger API object\n      CronTrigger ct = &#91;SELECT Id, CronExpression, TimesTriggered, \n         NextFireTime\n         FROM CronTrigger WHERE id = :jobId];\n\n      \/\/ Verify the expressions are the same\n      System.assertEquals(TestScheduledApexFromTestMethod.CRON_EXP, \n         ct.CronExpression);\n\n      \/\/ Verify the job has not run\n      System.assertEquals(0, ct.TimesTriggered);\n\n      \/\/ Verify the next time the job will run\n      System.assertEquals('2042-09-03 00:00:00', \n         String.valueOf(ct.NextFireTime));\n      System.assertNotEquals('testScheduledApexFromTestMethodUpdated',\n         &#91;SELECT id, name FROM account WHERE id = :a.id].name);\n\n   Test.stopTest();\n\n   System.assertEquals('testScheduledApexFromTestMethodUpdated',\n   &#91;SELECT Id, Name FROM Account WHERE Id = :a.Id].Name);\n\n   }\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><a><\/a>\u4f7f\u7528&nbsp;System.schedule&nbsp;\u65b9\u6cd5<\/h2>\n\n\n\n<p>\u4f7f\u7528\u63a5\u53e3\u5b9e\u73b0\u7c7b\u540e\uff0c\u4f7f\u7528\u8be5\u65b9\u6cd5\u6267\u884c\u8be5\u7c7b\u3002\u8c03\u5ea6\u7a0b\u5e8f\u4ee5 \u7cfb\u7edf &#8211; \u6267\u884c\u6240\u6709\u7c7b\uff0c\u65e0\u8bba\u7528\u6237\u662f\u5426\u5177\u6709\u6267\u884c\u6743\u9650 \u7c7b\uff0c\u6216\u4e0d\u7c7b\u3002<\/p>\n\n\n\n<p><samp>Schedulable<\/samp><samp>System.schedule<\/samp><\/p>\n\n\n\n<p>\u6ce8\u610f<\/p>\n\n\n\n<p>\u5982\u679c\u60a8\u6253\u7b97\u5b89\u6392 \u7c7b\u3002\u60a8\u5fc5\u987b\u80fd\u591f\u4fdd\u8bc1\u89e6\u53d1\u5668 \u6dfb\u52a0\u7684\u9884\u5b9a\u8bfe\u7a0b\u4e0d\u4f1a\u8d85\u8fc7\u9650\u5236\u3002\u7279\u522b\u8981\u8003\u8651 API \u6279\u91cf\u66f4\u65b0\u3001\u5bfc\u5165\u5411\u5bfc\u3001\u901a\u8fc7\u7528\u6237\u6279\u91cf\u8bb0\u5f55\u66f4\u6539 \u63a5\u53e3\uff0c\u4ee5\u53ca\u53ef\u4ee5\u5728 \u65f6\u95f4\u3002<\/p>\n\n\n\n<p><a><\/a>\u8be5\u65b9\u6cd5\u91c7\u7528\u4e09\u4e2a\u53c2\u6570\uff1a\u4f5c\u4e1a\u7684\u540d\u79f0\u3001 \u7528\u4e8e\u8868\u793a\u4f5c\u4e1a\u8ba1\u5212\u8fd0\u884c\u7684\u65f6\u95f4\u548c\u65e5\u671f\u7684\u8868\u8fbe\u5f0f\uff0c \u548c\u7c7b\u7684\u540d\u79f0\u3002<samp>System.schedule<\/samp>\u6b64\u8868\u8fbe\u5f0f\u5177\u6709\u4ee5\u4e0b\u7279\u5f81 \u8bed\u6cd5\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code><em>Seconds<\/em> <em>Minutes<\/em> <em>Hours<\/em> <em>Day_of_month<\/em> <em>Month<\/em> <em>Day_of_week<\/em> <em>Optional_year<\/em><\/code><\/pre>\n\n\n\n<p>\u6ce8\u610f<\/p>\n\n\n\n<p>Salesforce\u7684 \u8ba1\u5212\u5728\u6307\u5b9a\u65f6\u95f4\u6267\u884c\u7c7b\u3002\u5b9e\u9645\u6267\u884c\u53ef\u4ee5\u662f \u6839\u636e\u670d\u52a1\u53ef\u7528\u6027\u5ef6\u8fdf\u3002<\/p>\n\n\n\n<p><a><\/a>\u8be5\u65b9\u6cd5\u4f7f\u7528 \u7528\u6237\u65f6\u533a\u4f5c\u4e3a\u6240\u6709\u8ba1\u5212\u7684\u57fa\u7840\u3002<samp>System.schedule<\/samp><\/p>\n\n\n\n<p>\u4ee5\u4e0b\u662f\u8868\u8fbe\u5f0f\u7684\u503c\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u540d\u5b57<\/th><th>\u503c<\/th><th>\u7279\u6b8a\u5b57\u7b26<\/th><\/tr><\/thead><tbody><tr><td><var>Seconds<\/var><\/td><td>0\u201359<\/td><td>\u6ca1\u6709<\/td><\/tr><tr><td><var>Minutes<\/var><\/td><td>0\u201359<\/td><td>\u6ca1\u6709<\/td><\/tr><tr><td><var>Hours<\/var><\/td><td>0\u201323<\/td><td><samp>, &#8211; * \/<\/samp><\/td><\/tr><tr><td><var>Day_of_month<\/var><\/td><td>1\u201331<\/td><td><samp>, &#8211; * ? \/ L W<\/samp><\/td><\/tr><tr><td><var>Month<\/var><\/td><td>1-12 \u6216\u4ee5\u4e0b\uff1a<samp>JAN<\/samp><samp>FEB<\/samp><samp>MAR<\/samp><samp>APR<\/samp><samp>MAY<\/samp><samp>JUN<\/samp><samp>JUL<\/samp><samp>AUG<\/samp><samp>SEP<\/samp><samp>OCT<\/samp><samp>NOV<\/samp><samp>DEC<\/samp><\/td><td><samp>, &#8211; * \/<\/samp><\/td><\/tr><tr><td><var>Day_of_week<\/var><\/td><td>1\u20137 or the following:<samp>SUN<\/samp><samp>MON<\/samp><samp>TUE<\/samp><samp>WED<\/samp><samp>THU<\/samp><samp>FRI<\/samp><samp>SAT<\/samp><\/td><td><samp>, &#8211; * ? \/ L #<\/samp><\/td><\/tr><tr><td><var>optional_year<\/var><\/td><td>null \u6216 1970\u20132099<\/td><td><samp>, &#8211; * \/<\/samp><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u7279\u6b8a\u5b57\u7b26\u5b9a\u4e49\u5982\u4e0b\uff1a<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u7279\u6b8a\u5b57\u7b26<\/th><th>\u63cf\u8ff0<\/th><\/tr><\/thead><tbody><tr><td><samp>,<\/samp><\/td><td>\u5206\u9694\u503c\u3002\u4f8b\u5982\uff0c\u7528\u4e8e\u6307\u5b9a \u4e00\u4e2a\u591a\u6708\u3002<samp>JAN, MAR, APR<\/samp><\/td><\/tr><tr><td><samp>&#8211;<\/samp><\/td><td>\u6307\u5b9a\u8303\u56f4\u3002\u4f8b\u5982\uff0cuse \u6307\u5b9a more than \u4e00\u4e2a\u6708\u3002<samp>JAN-MAR<\/samp><\/td><\/tr><tr><td><samp>*<\/samp><\/td><td>\u6307\u5b9a\u6240\u6709\u503c\u3002\u4f8b\u5982\uff0c\u5982\u679c\u6307\u5b9a\u4e3a \uff0c\u5219\u4f5c\u4e1a\u8ba1\u5212\u4e3a \u6bcf\u4e2a\u6708\u3002<var>Month<\/var><samp>*<\/samp><\/td><\/tr><tr><td><samp>?<\/samp><\/td><td>\u4e0d\u6307\u5b9a\u4efb\u4f55\u7279\u5b9a\u503c\u3002\u6b64\u9009\u9879\u4ec5\u53ef\u7528 for \u548c .\u5b83\u901a\u5e38\u7528\u4e8e\u4ee5\u4e0b\u60c5\u51b5 \u4e3a\u4e00\u4e2a\u6307\u5b9a\u503c\uff0c\u800c\u4e0d\u662f\u4e3a\u53e6\u4e00\u4e2a\u6307\u5b9a\u503c\u3002<var>Day_of_month<\/var><var>Day_of_week<\/var><\/td><\/tr><tr><td><samp>\/<\/samp><\/td><td>\u6307\u5b9a\u589e\u91cf\u3002\u659c\u6760\u524d\u7684\u6570\u5b57\u6307\u5b9a \u95f4\u9694\u4f55\u65f6\u5f00\u59cb\uff0c\u659c\u6760\u540e\u7684\u6570\u5b57\u4e3a \u95f4\u9694\u91cf\u3002\u4f8b\u5982\uff0c\u5982\u679c\u6307\u5b9a for \uff0c\u5219 Apex \u7c7b\u6bcf\u9694 \u6bcf\u6708\u7684\u7b2c\u4e94\u5929\uff0c\u4ece \u6708\u3002<samp>1\/5<\/samp><var>Day_of_month<\/var><\/td><\/tr><tr><td><samp>L<\/samp><\/td><td>\u6307\u5b9a\u8303\u56f4\u7684\u7ed3\u675f\uff08\u6700\u540e\u4e00\u4e2a\uff09\u3002\u6b64\u9009\u9879\u4ec5 \u53ef\u7528\u4e8e \u548c \u3002\u5f53\u4e0e \u4e00\u8d77\u4f7f\u7528\u65f6\uff0c\u59cb\u7ec8\u8868\u793a\u5f53\u6708\u7684\u6700\u540e\u4e00\u5929\uff0c\u4f8b\u5982 1 \u6708 31 \u65e5\u30012 \u6708 29 \u65e5\uff08\u95f0\u5e74\uff09\u7b49\u3002\u4f7f\u7528\u65f6 \u5c31\u5176\u672c\u8eab\u800c\u8a00\uff0c\u5b83\u603b\u662f\u610f\u5473\u7740 \u6216 \u3002\u5f53\u4e0e\u503c\u4e00\u8d77\u4f7f\u7528\u65f6\uff0c\u5b83\u8868\u793a\u6700\u540e\u4e00\u4e2a \u5f53\u6708\u7684\u90a3\u4e00\u5929\u3002\u4f8b\u5982\uff0c\u5982\u679c\u6307\u5b9a \uff0c\u5219 \u6307\u5b9a\u5f53\u6708\u7684\u6700\u540e\u4e00\u4e2a\u661f\u671f\u4e00\u3002\u4e0d\u8981\u4f7f\u7528\u8303\u56f4 \u503c\u66ff\u6362\u4e3a \u7ed3\u679c\u53ef\u80fd\u51fa\u4e4e\u610f\u6599\u3002<var>Day_of_month<\/var><var>Day_of_week<\/var><var>Day of month<\/var><samp>L<\/samp><var>Day_of_week<\/var><samp>7<\/samp><samp>SAT<\/samp><var>Day_of_week<\/var><samp>2L<\/samp><samp>L<\/samp><\/td><\/tr><tr><td><samp>W<\/samp><\/td><td>\u6307\u5b9a\u7ed9\u5b9a\u7684\u6700\u8fd1\u7684\u5de5\u4f5c\u65e5\uff08\u661f\u671f\u4e00\u81f3\u661f\u671f\u4e94\uff09 \u65e5\u3002\u6b64\u9009\u9879\u4ec5\u9002\u7528\u4e8e \u3002\u4f8b\u5982\uff0c\u5982\u679c\u6307\u5b9a \uff0c\u800c\u7b2c 20 \u4e2a\u662f \u661f\u671f\u516d\uff0c\u4e0a\u8bfe\u572819\u65e5\u3002\u5982\u679c\u6307\u5b9a \uff0c\u5e76\u4e14\u7b2c\u4e00\u4e2a\u662f \u661f\u671f\u516d\uff0c\u8bfe\u7a0b\u4e0d\u662f\u5728\u4e0a\u4e2a\u6708\u4e0a\u8bfe\uff0c\u800c\u662f\u5728 \u7b2c\u4e09\u6b21\uff0c\u5373\u4e0b\u5468\u4e00\u3002<var>Day_of_month<\/var><samp>20W<\/samp><samp>1W<\/samp>\u63d0\u793a\u7528 \u7684 \u548c \u4e00\u8d77\u6307\u5b9a \u6bcf\u6708\u7684\u6700\u540e\u4e00\u4e2a\u5de5\u4f5c\u65e5\u3002<samp>L<\/samp><samp>W<\/samp><\/td><\/tr><tr><td><samp>#<\/samp><\/td><td>\u6307\u5b9a\u6708\u4efd\u4e2d\u7684\u67d0\u4e00\u5929\uff0c\u5728 \u683c\u5f0f\u3002 \u6b64\u9009\u9879\u4ec5\u9002\u7528\u4e8e \u3002\u6307\u5b9a\u7684\u5de5\u4f5c\u65e5 \uff08\uff09 \u4e4b\u524d\u7684\u6570\u5b57\u3002\u4e4b\u540e\u7684\u6570\u5b57 \u6307\u5b9a\u65e5\u671f \u7684\u6708\u4efd\u3002\u4f8b\u5982\uff0c\u6307\u5b9a\u610f\u5473\u7740\u7c7b\u5728 \u6bcf\u4e2a\u6708\u7684\u7b2c\u4e00\u4e2a\u661f\u671f\u4e00\u3002<var>nth<\/var><samp><var>weekday<\/var>#<var>day_of_month<\/var><\/samp><var>Day_of_week<\/var><samp>#<\/samp><samp>SUN-SAT<\/samp><samp>#<\/samp><samp>2#1<\/samp><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p id=\"schedule_expression_examples\"><a><\/a>\u4ee5\u4e0b\u662f\u5982\u4f55\u4f7f\u7528 \u8868\u8fbe\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u8868\u8fbe<\/th><th>\u63cf\u8ff0<\/th><\/tr><\/thead><tbody><tr><td><samp>0 0 13 * * ?<\/samp><\/td><td>\u6bcf\u5929\u4e0b\u53481\u70b9\u4e0a\u8bfe\u3002<\/td><\/tr><tr><td><samp>0 5 * * * ?<\/samp><\/td><td>\u8bfe\u7a0b\u6bcf\u5c0f\u65f6\u4e0a\u8bfe\u4e00\u6b21\uff0c\u6574\u70b9\u540e 5 \u5206\u949f\u3002\u6ce8\u610fApex \u4e0d\u5141\u8bb8\u5c06\u4f5c\u4e1a\u8ba1\u5212\u591a\u6b21 \u5c0f\u65f6\u3002<\/td><\/tr><tr><td><samp>0 0 22 ? * 6L<\/samp><\/td><td>\u6bcf\u4e2a\u6708\u7684\u6700\u540e\u4e00\u4e2a\u661f\u671f\u4e94\u665a\u4e0a 10 \u70b9\u4e0a\u8bfe\u3002<\/td><\/tr><tr><td><samp>0 0 10 ? * MON-FRI<\/samp><\/td><td>\u4e0a\u8bfe\u65f6\u95f4\u4e3a\u5468\u4e00\u81f3\u5468\u4e94\u4e0a\u5348 10 \u70b9\u3002<\/td><\/tr><tr><td><samp>0 0 20 * * ? 2010<\/samp><\/td><td>\u57282010\u5e74\uff0c\u6bcf\u5929\u665a\u4e0a8\u70b9\u4e0a\u8bfe\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u5728\u4e0b\u9762\u7684\u793a\u4f8b\u4e2d\uff0c\u8be5\u7c7b\u5b9e\u73b0\u63a5\u53e3\u3002\u8be5\u8bfe\u7a0b\u8ba1\u5212\u4e8e\u4e0a\u5348 8 \u70b9\u5728 2\u670813\u65e5\u3002<samp>Proschedule<\/samp><samp>Schedulable<\/samp><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Proschedule p = new Proschedule();\n        String sch = '0 0 8 13 2 ?';\n        System.schedule('One Time Pro', sch, p);<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><a><\/a>\u5c06&nbsp;System.scheduleBatch&nbsp;\u65b9\u6cd5\u7528\u4e8e\u6279\u5904\u7406\u4f5c\u4e1a<\/h2>\n\n\n\n<p>\u60a8\u53ef\u4ee5\u8c03\u7528\u8be5\u65b9\u6cd5 \u5c06\u6279\u5904\u7406\u4f5c\u4e1a\u5b89\u6392\u4e3a\u5728\u5c06\u6765\u7684\u6307\u5b9a\u65f6\u95f4\u8fd0\u884c\u4e00\u6b21\u3002\u6b64\u65b9\u6cd5\u662f \u4ec5\u9002\u7528\u4e8e\u6279\u5904\u7406\u7c7b\uff0c\u4e0d\u9700\u8981\u63a5\u53e3\u7684\u5b9e\u73b0\u3002\u56e0\u6b64\uff0c\u8fd9\u5f88\u5bb9\u6613 \u4e3a\u4e00\u6b21\u6267\u884c\u8ba1\u5212\u6279\u5904\u7406\u4f5c\u4e1a\u3002\u6709\u5173\u5982\u4f55\u4f7f\u7528\u8be5\u65b9\u6cd5\u7684\u66f4\u591a\u8be6\u7ec6\u4fe1\u606f\uff0c\u8bf7\u53c2\u89c1\u4f7f\u7528\u00a0<samp>System.scheduleBatch<\/samp>\u00a0\u65b9\u6cd5\u3002<samp>System.scheduleBatchSchedulableSystem.scheduleBatch<\/samp><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Apex Scheduler \u9650\u5236<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u60a8\u4e00\u6b21\u53ea\u80fd\u6709 100 \u4e2a\u8ba1\u5212\u7684 Apex \u4f5c\u4e1a\u3002\u60a8\u53ef\u4ee5\u8bc4\u4f30\u60a8\u7684 \u901a\u8fc7\u67e5\u770b Salesforce \u4e2d\u7684\u201c\u8ba1\u5212\u4f5c\u4e1a\u201d\u9875\u9762\u5e76\u521b\u5efa \u5177\u6709\u7b49\u4e8e\u201cScheduled Apex\u201d\u7684\u7c7b\u578b\u8fc7\u6ee4\u5668\u7684\u81ea\u5b9a\u4e49\u89c6\u56fe\u3002\u60a8\u53ef\u4ee5 \u8fd8\u4ee5\u7f16\u7a0b\u65b9\u5f0f\u67e5\u8be2 CronTrigger \u548c CronJobDetail \u5bf9\u8c61\u4ee5\u83b7\u53d6 Apex \u8ba1\u5212\u4f5c\u4e1a\u7684\u8ba1\u6570\u3002<\/li>\n\n\n\n<li>\u6bcf 24 \u5c0f\u65f6\u5185\u8ba1\u5212\u7684\u6700\u5927 Apex \u6267\u884c\u6b21\u6570\u4e3a 250,000 \u6b21\u6216 \u7ec4\u7ec7\u4e2d\u7684\u7528\u6237\u8bb8\u53ef\u8bc1\u6570\u4e58\u4ee5 200\uff0c\u4ee5 \u5927\u3002\u6b64\u9650\u5236\u9002\u7528\u4e8e\u6574\u4e2a\u7ec4\u7ec7\uff0c\u5e76\u4e0e\u6240\u6709\u5f02\u6b65 Apex \u5171\u4eab\uff1a Batch Apex\u3001Queueable Apex\u3001scheduled Apex \u548c future \u65b9\u6cd5\u3002\u68c0\u67e5\u591a\u5c11 \u5f02\u6b65 Apex \u6267\u884c\u53ef\u7528\uff0c\u5411 REST API \u8d44\u6e90\u53d1\u51fa\u8bf7\u6c42\u3002\u67e5\u770b\u6e05\u5355 REST \u4e2d\u7684\u7ec4\u7ec7\u9650\u5236\u00a0API \u5f00\u53d1\u4eba\u5458\u6307\u5357\u3002\u8ba1\u5165\u6b64\u76ee\u7684\u7684\u8bb8\u53ef\u8bc1\u7c7b\u578b \u9650\u5236\u5305\u62ec\u5b8c\u6574\u7684 Salesforce \u548c Salesforce Platform \u7528\u6237\u8bb8\u53ef\u8bc1\u3001\u5e94\u7528\u7a0b\u5e8f\u8ba2\u9605 \u7528\u6237\u8bb8\u53ef\u8bc1\u3001\u4ec5\u9650 Chatter \u7528\u6237\u3001\u8eab\u4efd\u7528\u6237\u548c\u516c\u53f8\u793e\u533a \u7528\u6237\u3002<samp>limits<\/samp><\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Apex Scheduler \u8bf4\u660e\u548c\u6700\u4f73\u5b9e\u8df5<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Salesforce \u8ba1\u5212\u5728\u6307\u5b9a\u65f6\u95f4\u6267\u884c\u7c7b\u3002\u5b9e\u9645\u6267\u884c \u53ef\u80fd\u4f1a\u6839\u636e\u670d\u52a1\u53ef\u7528\u6027\u5ef6\u8fdf\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u60a8\u6253\u7b97\u4ece\u89e6\u53d1\u5668\u5b89\u6392\u8bfe\u7a0b\uff0c\u8bf7\u683c\u5916\u5c0f\u5fc3\u3002\u4f60 \u5fc5\u987b\u80fd\u591f\u4fdd\u8bc1\u89e6\u53d1\u5668\u4e0d\u4f1a\u6dfb\u52a0\u66f4\u591a\u8ba1\u5212\u7c7b \u8d85\u8fc7\u6781\u9650\u3002\u5177\u4f53\u800c\u8a00\uff0c\u8bf7\u8003\u8651 API \u6279\u91cf\u66f4\u65b0\u3001\u5bfc\u5165\u5411\u5bfc\u3001\u6279\u91cf\u8bb0\u5f55 \u901a\u8fc7\u7528\u6237\u754c\u9762\u8fdb\u884c\u66f4\u6539\uff0c\u4ee5\u53ca\u53ef\u4ee5\u6709\u591a\u4e2a\u8bb0\u5f55\u7684\u6240\u6709\u60c5\u51b5 \u4e00\u6b21\u66f4\u65b0\u3002<\/li>\n\n\n\n<li>\u5c3d\u7ba1\u53ef\u4ee5\u5728\u8be5\u65b9\u6cd5\u4e2d\u8fdb\u884c\u5176\u4ed6\u5904\u7406\uff0c\u4f46\u6211\u4eec\u5efa\u8bae\u6240\u6709 \u5904\u7406\u5fc5\u987b\u5728\u5355\u72ec\u7684\u7c7b\u4e2d\u8fdb\u884c\u3002<samp>execute<\/samp><\/li>\n\n\n\n<li>\u8ba1\u5212\u7684 Apex \u4e0d\u652f\u6301\u540c\u6b65 Web \u670d\u52a1\u6807\u6ce8\u3002\u8981\u4f7f \u5f02\u6b65\u6807\u6ce8\uff0c\u4f7f\u7528\u00a0Queueable Apex\uff0c\u5b9e\u73b0\u6807\u8bb0\u63a5\u53e3\u3002\u5982\u679c\u4f60\u7684 scheduled Apex \u4f7f\u7528\u6807\u8bb0\u5668\u63a5\u53e3\u6267\u884c\u6279\u5904\u7406\u4f5c\u4e1a\uff0c\u652f\u6301 \u6279\u5904\u7406\u7c7b\u3002\u8bf7\u53c2\u9605\u4f7f\u7528 Batch Apex\u3002<samp>Database.AllowsCalloutsDatabase.AllowsCallouts<\/samp><\/li>\n\n\n\n<li>\u8ba1\u5212\u5728 Salesforce \u670d\u52a1\u7ef4\u62a4\u505c\u673a\u671f\u95f4\u8fd0\u884c\u7684 Apex \u4f5c\u4e1a\u5c06\u662f \u8ba1\u5212\u5728\u670d\u52a1\u6062\u590d\u540e\u8fd0\u884c\uff0c\u6b64\u65f6\u7cfb\u7edf\u8d44\u6e90\u53d8\u4e3a \u53ef\u7528\u3002\u5982\u679c\u5728\u53d1\u751f\u505c\u673a\u65f6\u8ba1\u5212\u7684 Apex \u4f5c\u4e1a\u6b63\u5728\u8fd0\u884c\uff0c\u5219\u8be5\u4f5c\u4e1a\u662f \u5728\u670d\u52a1\u6062\u590d\u540e\u56de\u6eda\u5e76\u518d\u6b21\u8ba1\u5212\u3002\u5927\u4fee\u540e \u5347\u7ea7\u65f6\uff0c\u542f\u52a8\u8ba1\u5212\u7684 Apex \u4f5c\u4e1a\u53ef\u80fd\u4f1a\u6709\u6bd4\u5e73\u65f6\u66f4\u957f\u7684\u5ef6\u8fdf \u56e0\u4e3a\u7cfb\u7edf\u4f7f\u7528\u7387\u6fc0\u589e\u3002<\/li>\n\n\n\n<li>\u8ba1\u5212\u4f5c\u4e1a\u5bf9\u8c61\u53ca\u5176\u6210\u5458\u53d8\u91cf\u548c\u5c5e\u6027\u5c06\u6301\u7eed\u5b58\u5728 \u4ece\u521d\u59cb\u5316\u5230\u540e\u7eed\u8ba1\u5212\u8fd0\u884c\u3002\u5bf9\u8c61\u72b6\u6001 persists \u7684\u8c03\u7528 \u540e\u7eed\u4f5c\u4e1a\u6267\u884c\u3002<samp>System.schedule()<\/samp>\u4f7f\u7528 Batch Apex\uff0c\u53ef\u4ee5\u5f3a\u5236\u6267\u884c\u65b0\u7684 \u4f7f\u7528\u65b0\u4f5c\u4e1a\u7684\u5e8f\u5217\u5316\u72b6\u6001\u3002\u5bf9\u4e8e Scheduled Apex\uff0c\u8bf7\u4f7f\u7528\u5173\u952e\u5b57\uff0c\u4ee5\u4fbf\u6210\u5458\u53d8\u91cf\u548c \u5c5e\u6027\u4e0d\u4f1a\u6301\u4e45\u5316\u3002\u8bf7\u53c2\u9605\u4f7f\u7528 transient \u5173\u952e\u5b57\u3002<samp>Database.Statefultransient<\/samp><\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">\u6279\u5904\u7406Apex<\/h1>\n\n\n\n<p>\u5f00\u53d1\u4eba\u5458\u73b0\u5728\u53ef\u4ee5\u4f7f\u7528\u6279\u5904\u7406 Apex \u6765\u6784\u5efa\u590d\u6742\u7684\u3001\u957f\u65f6\u95f4\u8fd0\u884c\u7684\u6d41\u7a0b\uff0c\u8fd9\u4e9b\u6d41\u7a0b\u53ef\u4ee5\u8fd0\u884c \u5728\u95ea\u7535\u5e73\u53f0\u4e0a\u7684\u6570\u5343\u6761\u8bb0\u5f55\u4e0a\u3002Batch Apex \u5728\u5c0f\u578b \u6279\u91cf\u8bb0\u5f55\uff0c\u6db5\u76d6\u6574\u4e2a\u8bb0\u5f55\u96c6\uff0c\u5e76\u5c06\u5904\u7406\u5206\u89e3\u4e3a \u53ef\u7ba1\u7406\u7684\u5757\u3002\u4f8b\u5982\uff0c\u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u6784\u5efa\u4e00\u4e2a\u8fd0\u884c \u6bcf\u665a\u67e5\u627e\u8d85\u8fc7\u7279\u5b9a\u65e5\u671f\u7684\u8bb0\u5f55\u5e76\u5c06\u5b83\u4eec\u6dfb\u52a0\u5230 \u6863\u6848\u3002\u6216\u8005\uff0c\u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u6784\u5efa\u4e00\u4e2a\u6570\u636e\u6e05\u7406\u64cd\u4f5c\uff0c\u8be5\u64cd\u4f5c\u904d\u53ca\u6240\u6709 \u6bcf\u665a\u7684\u5e10\u6237\u548c\u4e1a\u52a1\u673a\u4f1a\uff0c\u5e76\u5728\u5fc5\u8981\u65f6\u6839\u636e \u81ea\u5b9a\u4e49\u6761\u4ef6\u3002<\/p>\n\n\n\n<p><a><\/a>Batch Apex \u516c\u5f00\u4e3a\u5fc5\u987b\u7531 \u5f00\u53d1\u4eba\u5458\u3002\u53ef\u4ee5\u4f7f\u7528 Apex \u5728\u8fd0\u884c\u65f6\u4ee5\u7f16\u7a0b\u65b9\u5f0f\u8c03\u7528\u6279\u5904\u7406\u4f5c\u4e1a\u3002\u4e00\u6b21\u53ea\u80fd\u6709\u4e94\u4e2a\u6392\u961f\u6216\u6d3b\u52a8\u7684\u6279\u5904\u7406\u4f5c\u4e1a\u3002\u60a8\u53ef\u4ee5\u8bc4\u4f30\u60a8\u7684 \u901a\u8fc7\u5728 Salesforce \u4e2d\u67e5\u770b\u201c\u8ba1\u5212\u4f5c\u4e1a\u201d\u9875\u9762\u6216\u4ee5\u7f16\u7a0b\u65b9\u5f0f\u4f7f\u7528 \u7528\u4e8e\u67e5\u8be2\u5bf9\u8c61\u7684 SOAP API\u3002<\/p>\n\n\n\n<p><samp>AsyncApexJob<\/samp><\/p>\n\n\n\n<p>\u8b66\u544a<\/p>\n\n\n\n<p><a><\/a>\u5982\u679c\u60a8\u662f \u8ba1\u5212\u4ece\u89e6\u53d1\u5668\u8c03\u7528\u6279\u5904\u7406\u4f5c\u4e1a\u3002\u60a8\u5fc5\u987b\u80fd\u591f\u4fdd\u8bc1 \u89e6\u53d1\u5668\u6dfb\u52a0\u7684\u6279\u5904\u7406\u4f5c\u4e1a\u4e0d\u4f1a\u8d85\u8fc7\u9650\u5236\u3002\u7279\u522b \u8003\u8651 API \u6279\u91cf\u66f4\u65b0\u3001\u5bfc\u5165\u5411\u5bfc\u3001\u901a\u8fc7\u7528\u6237\u6279\u91cf\u8bb0\u5f55\u66f4\u6539 \u63a5\u53e3\uff0c\u4ee5\u53ca\u53ef\u4ee5\u5728 \u65f6\u95f4\u3002<\/p>\n\n\n\n<p>\u8fd8\u53ef\u4ee5\u4f7f\u7528\u00a0Apex \u8c03\u5ea6\u7a0b\u5e8f\u4ee5\u7f16\u7a0b\u65b9\u5f0f\u8c03\u5ea6\u6279\u5904\u7406\u4f5c\u4e1a\uff0c\u4ee5\u5728\u7279\u5b9a\u65f6\u95f4\u8fd0\u884c\uff0c\u6216\u4f7f\u7528\u8c03\u5ea6\u8c03\u5ea6\u4f5c\u4e1a Salesforce \u7528\u6237\u754c\u9762\u4e2d\u7684 Apex \u9875\u9762\u3002\u6709\u5173 Schedule Apex \u7684\u66f4\u591a\u4fe1\u606f \u9875\u9762\u4e0a\uff0c\u8bf7\u53c2\u9605 Salesforce \u8054\u673a\u5e2e\u52a9\u4e2d\u7684\u201c\u5b89\u6392 Apex \u4f5c\u4e1a\u201d\u3002<\/p>\n\n\n\n<p>\u6279\u5904\u7406 Apex \u63a5\u53e3\u8fd8\u7528\u4e8e\u00a0Apex \u6258\u7ba1\u5171\u4eab\u91cd\u65b0\u8ba1\u7b97\u3002<\/p>\n\n\n\n<p>\u6709\u5173\u6279\u5904\u7406\u4f5c\u4e1a\u7684\u8be6\u7ec6\u4fe1\u606f\uff0c\u8bf7\u7ee7\u7eed\u4f7f\u7528 Batch Apex\u3002<\/p>\n\n\n\n<p>\u6709\u5173 Apex \u6258\u7ba1\u5171\u4eab\u7684\u8be6\u7ec6\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605\u4e86\u89e3 Apex \u6258\u7ba1\u5171\u4eab\u3002<\/p>\n\n\n\n<p>\u6709\u5173\u4ece\u6279\u5904\u7406 Apex \u89e6\u53d1\u5e73\u53f0\u4e8b\u4ef6\u7684\u8be6\u7ec6\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605\u4ece\u6279\u5904\u7406 Apex \u89e6\u53d1\u5e73\u53f0\u4e8b\u4ef6<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u4f7f\u7528 Batch Apex<\/strong><\/li>\n\n\n\n<li>\u4ece Batch Apex \u89e6\u53d1\u5e73\u53f0\u4e8b\u4ef6 Batch Apex<br>\u7c7b\u53ef\u4ee5\u5728\u9047\u5230\u9519\u8bef\u6216\u5f02\u5e38\u65f6<strong>\u89e6\u53d1\u5e73\u53f0\u4e8b\u4ef6<\/strong>\u3002\u4fa6\u542c\u4e8b\u4ef6\u7684\u5ba2\u6237\u7aef\u53ef\u4ee5\u83b7\u53d6\u53ef\u64cd\u4f5c\u7684\u4fe1\u606f\uff0c\u4f8b\u5982\u4e8b\u4ef6\u5931\u8d25\u7684\u9891\u7387\u4ee5\u53ca\u5931\u8d25\u65f6\u54ea\u4e9b\u8bb0\u5f55\u5728\u8303\u56f4\u5185\u3002\u5bf9\u4e8e Salesforce Platform \u5185\u90e8\u9519\u8bef\u548c\u5176\u4ed6\u65e0\u6cd5\u6355\u83b7\u7684 Apex \u5f02\u5e38\uff08\u5982 LimitExceptions\uff09\uff0c\u4e5f\u4f1a\u89e6\u53d1\u4e8b\u4ef6\uff0c\u8fd9\u4e9b\u5f02\u5e38\u662f\u7531\u8fbe\u5230\u8c03\u63a7\u5668\u9650\u5236\u5f15\u8d77\u7684\u3002<\/li>\n<\/ul>\n\n\n\n<h1 class=\"wp-block-heading\">\u4f7f\u7528 Batch Apex<\/h1>\n\n\n\n<p>\u8981\u4f7f\u7528\u6279\u5904\u7406 Apex\uff0c\u8bf7\u7f16\u5199\u4e00\u4e2a\u5b9e\u73b0 Salesforce \u63d0\u4f9b\u7684\u63a5\u53e3\u7684 Apex \u7c7b\uff0c\u7136\u540e\u8c03\u7528 \u4ee5\u7f16\u7a0b\u65b9\u5f0f\u7c7b\u3002<samp>Database.Batchable<\/samp><\/p>\n\n\n\n<p>\u8981\u76d1\u63a7\u6216\u505c\u6b62\u6279\u5904\u7406 Apex \u4f5c\u4e1a\u7684\u6267\u884c\uff0c\u8bf7\u4ece\u201c\u8bbe\u7f6e\u201d\u4e2d\u8f93\u5165\u201c\u5feb\u901f\u67e5\u627e\u201d\u6846\uff0c\u7136\u540e\u9009\u62e9<strong>\u201cApex \u4f5c\u4e1a<\/strong>\u201d\u3002<kbd>Apex Jobs<\/kbd><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u5b9e\u73b0&nbsp;Database.Batchable&nbsp;\u63a5\u53e3<\/h2>\n\n\n\n<p>\u8be5\u63a5\u53e3\u5305\u542b \u5fc5\u987b\u5b9e\u73b0\u7684\u4e09\u79cd\u65b9\u6cd5\u3002<\/p>\n\n\n\n<p><samp>Database.Batchable<\/samp><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><samp>start<\/samp>\u65b9\u6cd5\uff1a<code>public (Database.QueryLocator | Iterable&lt;sObject>) start(Database.BatchableContext <em>bc<\/em>) {}<\/code>\u81ea \u6536\u96c6\u8981\u4f20\u9012\u7ed9\u63a5\u53e3\u65b9\u6cd5\u7684\u8bb0\u5f55\u6216\u5bf9\u8c61\uff0c\u5728 \u6279\u5904\u7406 Apex \u4f5c\u4e1a\u3002\u6b64\u65b9\u6cd5\u8fd4\u56de\u4e00\u4e2a\u5bf9\u8c61\u6216 iterable\uff0c\u5305\u542b\u4f20\u9012\u7ed9 \u5de5\u4f5c\u3002<samp>executestartDatabase.QueryLocator<\/samp>\u4f7f\u7528\u7b80\u5355\u67e5\u8be2 \uff08\uff09 \u751f\u6210\u8303\u56f4\u65f6 \u6279\u5904\u7406\u4f5c\u4e1a\u4e2d\u7684\u5bf9\u8c61\uff0c\u8bf7\u4f7f\u7528\u8be5\u5bf9\u8c61\u3002\u5982\u679c\u4f7f\u7528\u5bf9\u8c61\uff0c\u5219\u8c03\u63a7\u5668 SOQL \u67e5\u8be2\u68c0\u7d22\u7684\u8bb0\u5f55\u603b\u6570\u9650\u5236\u4e3a \u7ed5\u8fc7\u3002\u4f8b\u5982\uff0cAccount \u5bf9\u8c61\u7684\u6279\u5904\u7406 Apex \u4f5c\u4e1a\u53ef\u4ee5 \u5168\u90e8\u8fd4\u56de A \u7ec4\u7ec7\u4e2d\u7684\u5e10\u6237\u8bb0\u5f55\uff08\u6700\u591a 5000 \u4e07\u6761\u8bb0\u5f55\uff09\u3002\u53e6\u4e00\u4e2a\u4f8b\u5b50\u662f \u5bf9 Contact \u5bf9\u8c61\u7684\u5171\u4eab\u91cd\u65b0\u8ba1\u7b97\uff0c\u8be5\u5bf9\u8c61\u4e3a\u6240\u6709\u5ba2\u6237\u8bb0\u5f55\u8fd4\u56de \u5728\u7ec4\u7ec7\u4e2d\u3002<samp>SELECTDatabase.QueryLocatorQueryLocatorQueryLocatorQueryLocator<\/samp>\u4f7f\u7528 iterable \u4e3a \u6279\u5904\u7406\u4f5c\u4e1a\u3002\u60a8\u8fd8\u53ef\u4ee5\u4f7f\u7528\u8fed\u4ee3\u5bf9\u8c61\u6765\u521b\u5efa\u81ea\u5df1\u7684\u81ea\u5b9a\u4e49 \u5faa\u73af\u8bbf\u95ee\u5217\u8868\u7684\u8fc7\u7a0b\u3002\u91cd\u8981\u5982\u679c\u60a8\u4f7f\u7528 \u53ef\u8fed\u4ee3\uff0c\u8bb0\u5f55\u603b\u6570\u7684\u8c03\u63a7\u5668\u9650\u5236 \u7531 SOQL \u67e5\u8be2\u68c0\u7d22\u5230\u7684\u4ecd\u4f1a\u5f3a\u5236\u6267\u884c\u3002\u6b32\u4e86\u89e3\u66f4\u591a\u4fe1\u606f \u5c06\u53ef\u8fed\u4ee3\u5bf9\u8c61\u7528\u4e8e\u6279\u5904\u7406\u4f5c\u4e1a\uff0c\u8bf7\u53c2\u9605\u00a0Batch Apex \u6700\u4f73\u5b9e\u8df5<\/li>\n\n\n\n<li><samp>execute<\/samp>\u65b9\u6cd5\uff1a<code>public void execute(Database.BatchableContext <em>BC<\/em>, list&lt;P&gt;){}<\/code>\u81ea \u5bf9\u6bcf\u4e2a\u6570\u636e\u5757\u8fdb\u884c\u6240\u9700\u7684\u5904\u7406\uff0c\u8bf7\u4f7f\u7528\u8be5\u65b9\u6cd5\u3002\u6b64\u65b9\u6cd5\u662f \u4e3a\u4f20\u9012\u7ed9\u5b83\u7684\u6bcf\u6279\u8bb0\u5f55\u8c03\u7528\u3002<samp>execute<\/samp>\u6b64\u65b9\u6cd5 \u91c7\u53d6\u4ee5\u4e0b\u63aa\u65bd\uff1a<ul><li>\u5bf9\u5bf9\u8c61\u7684\u5f15\u7528\u3002<samp>Database.BatchableContext<\/samp><\/li><li>sObject \u7684\u5217\u8868\uff0c\u4f8b\u5982 \u6216\u53c2\u6570\u5316\u7684\u5217\u8868 \u7c7b\u578b\u3002\u5982\u679c\u60a8\u4f7f\u7528\u7684\u662f \uff0c\u8bf7\u4f7f\u7528\u8fd4\u56de\u7684\u5217\u8868\u3002<samp>List&lt;sObject&gt;<\/samp><samp>Database.QueryLocator<\/samp><\/li><\/ul>\u6279\u91cf\u8bb0\u5f55\u5f80\u5f80\u6309\u7167\u4ee5\u4e0b\u987a\u5e8f\u6267\u884c \u5b83\u4eec\u662f\u4ece\u65b9\u6cd5\u63a5\u6536\u7684\u3002\u4f46\u662f\uff0c\u6279\u91cf\u8bb0\u5f55\u7684\u6267\u884c\u987a\u5e8f\u53d6\u51b3\u4e8e \u5728\u5404\u79cd\u56e0\u7d20\u4e0a\u3002\u4e0d\u4fdd\u8bc1\u6267\u884c\u987a\u5e8f\u3002<samp>start<\/samp><\/li>\n\n\n\n<li><samp>finish<\/samp>\u65b9\u6cd5\uff1a<code>public void finish(Database.BatchableContext <em>BC<\/em>){}<\/code>\u81ea \u53d1\u9001\u786e\u8ba4\u7535\u5b50\u90ae\u4ef6\u6216\u6267\u884c\u540e\u5904\u7406\u64cd\u4f5c\uff0c\u8bf7\u4f7f\u7528\u8be5\u65b9\u6cd5\u3002\u6b64\u65b9\u6cd5 \u5728\u5904\u7406\u5b8c\u6240\u6709\u6279\u5904\u7406\u540e\u8c03\u7528\u3002<samp>finish<\/samp><\/li>\n<\/ul>\n\n\n\n<p>\u6279\u5904\u7406 Apex \u4f5c\u4e1a\u7684\u6bcf\u6b21\u6267\u884c\u90fd\u88ab\u89c6\u4e3a\u79bb\u6563\u4e8b\u52a1\u3002\u4f8b\u5982 \u5305\u542b 1,000 \u6761\u8bb0\u5f55\u4e14\u5728\u6ca1\u6709\u53ef\u9009\u53c2\u6570\u7684\u60c5\u51b5\u4e0b\u6267\u884c\u7684\u6279\u5904\u7406 Apex \u4f5c\u4e1a\u88ab\u89c6\u4e3a 200 \u6761\u8bb0\u5f55\u7684 5 \u4e2a\u4e8b\u52a1 \u6bcf\u3002\u6bcf\u4e2a\u4e8b\u52a1\u90fd\u4f1a\u91cd\u7f6e Apex \u8c03\u63a7\u5668\u9650\u5236\u3002\u5982\u679c\u7b2c\u4e00\u4e2a \u4e8b\u52a1\u6210\u529f\uff0c\u4f46\u7b2c\u4e8c\u4e2a\u4e8b\u52a1\u5931\u8d25\uff0c\u7b2c\u4e00\u4e2a\u4e8b\u52a1\u4e2d\u7684\u6570\u636e\u5e93\u66f4\u65b0 \u4e8b\u52a1\u4e0d\u4f1a\u56de\u6eda\u3002<var>scope<\/var><samp>Database.executeBatch<\/samp><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><a><\/a>\u7528 Database.BatchableContext<\/h2>\n\n\n\n<p>\u90fd \u63a5\u53e3\u4e2d\u7684\u65b9\u6cd5\u9700\u8981\u5bf9\u5bf9\u8c61\u7684\u5f15\u7528\u3002\u4f7f\u7528\u6b64\u5bf9\u8c61\u6765\u8ddf\u8e2a \u6279\u5904\u7406\u4f5c\u4e1a\u7684\u8fdb\u5ea6\u3002<samp>Database.Batchable<\/samp><samp>Database.BatchableContext<\/samp>\u4ee5\u4e0b\u662f\u5177\u6709\u8be5\u5bf9\u8c61\u7684\u5b9e\u4f8b\u65b9\u6cd5\uff1a<\/p>\n\n\n\n<p><samp>Database.BatchableContext<\/samp><\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u540d\u5b57<\/th><th>\u53c2\u6570<\/th><th>\u8fd4\u56de<\/th><th>\u63cf\u8ff0<\/th><\/tr><\/thead><tbody><tr><td><samp><a><\/a>getJobID<\/samp><\/td><td><\/td><td>\u7f16\u53f7<\/td><td>\u4ee5\u5b57\u7b26\u4e32\u5f62\u5f0f\u8fd4\u56de\u4e0e\u6b64\u6279\u5904\u7406\u4f5c\u4e1a\u5173\u8054\u7684\u00a0AsyncApexJob\u00a0\u5bf9\u8c61\u7684 ID\u3002\u4f7f\u7528\u8fd9\u4e2a \u65b9\u6cd5\u8ddf\u8e2a\u6279\u5904\u7406\u4f5c\u4e1a\u4e2d\u8bb0\u5f55\u7684\u8fdb\u5ea6\u3002\u4f60 \u8fd8\u53ef\u4ee5\u5c06\u6b64 ID \u4e0e\u00a0<samp>System.abortJob<\/samp>\u00a0\u65b9\u6cd5\u4e00\u8d77\u4f7f\u7528\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p>\u4ee5\u4e0b\u793a\u4f8b\u4f7f\u7528 \u67e5\u8be2\u4e0e\u6279\u5904\u7406\u5173\u8054\u7684 \u5de5\u4f5c\u3002<samp>Database.BatchableContext<\/samp><samp>AsyncApexJob<\/samp><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public void finish(Database.BatchableContext BC){\n   \/\/ Get the ID of the AsyncApexJob representing this batch job\n   \/\/ from Database.BatchableContext.\n   \/\/ Query the AsyncApexJob object to retrieve the current job's information.\n   AsyncApexJob a = &#91;SELECT Id, Status, NumberOfErrors, JobItemsProcessed,\n      TotalJobItems, CreatedBy.Email\n      FROM AsyncApexJob WHERE Id =\n      :BC.getJobId()];\n   \/\/ Send an email to the Apex job's submitter notifying of job completion.\n   Messaging.SingleEmailMessage mail = new Messaging.SingleEmailMessage();\n   String&#91;] toAddresses = new String&#91;] {a.CreatedBy.Email};\n   mail.setToAddresses(toAddresses);\n   mail.setSubject('Apex Sharing Recalculation ' + a.Status);\n   mail.setPlainTextBody\n   ('The batch Apex job processed ' + a.TotalJobItems +\n   ' batches with '+ a.NumberOfErrors + ' failures.');\n   Messaging.sendEmail(new Messaging.SingleEmailMessage&#91;] { mail });\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><a><\/a>\u4f7f\u7528 Database.QueryLocator \u5b9a\u4e49 \u8303\u56f4<\/h2>\n\n\n\n<p>\u8be5\u65b9\u6cd5\u53ef\u4ee5\u8fd4\u56de\u4e00\u4e2a\u5bf9\u8c61\uff0c\u8be5\u5bf9\u8c61\u5305\u542b \u8981\u5728\u6279\u5904\u7406\u4f5c\u4e1a\u6216\u53ef\u8fed\u4ee3\u5bf9\u8c61\u4e2d\u4f7f\u7528\u7684\u8bb0\u5f55\u3002<samp>start<\/samp><samp>Database.QueryLocator<\/samp>\u4ee5\u4e0b\u793a\u4f8b\u4f7f\u7528 \uff1a<\/p>\n\n\n\n<p><samp>Database.QueryLocator<\/samp><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class SearchAndReplace implements Database.Batchable&lt;sObject&gt;{\n\n   public final String Query;\n   public final String Entity;\n   public final String Field;\n   public final String Value;\n\n   public SearchAndReplace(String q, String e, String f, String v){\n\n      Query=q; Entity=e; Field=f;Value=v;\n   }\n\n   public Database.QueryLocator start(Database.BatchableContext BC){\n      return Database.getQueryLocator(query);\n   }\n\n   public void execute(Database.BatchableContext BC, List&lt;sObject&gt; scope){\n     for(sobject s : scope){\n     s.put(Field,Value); \n     }\n     update scope;\n    }\n\n   public void finish(Database.BatchableContext BC){\n   }\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u4f7f\u7528 Batch Apex \u4e2d\u7684\u53ef\u8fed\u4ee3\u5bf9\u8c61\u6765\u5b9a\u4e49 \u8303\u56f4<\/h2>\n\n\n\n<p>\u8be5\u65b9\u6cd5\u53ef\u4ee5\u8fd4\u56de\u4e00\u4e2a\u5bf9\u8c61\uff0c\u8be5\u5bf9\u8c61\u5305\u542b \u8981\u5728\u6279\u5904\u7406\u4f5c\u4e1a\u6216\u53ef\u8fed\u4ee3\u5bf9\u8c61\u4e2d\u4f7f\u7528\u7684\u8bb0\u5f55\u3002\u4f7f\u7528 iterable \u5355\u6b65\u6267\u884c \u66f4\u5bb9\u6613\u9000\u56de\u7269\u54c1\u3002<samp>startDatabase.QueryLocator<\/samp><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class batchClass implements Database.batchable{ \n   public Iterable start(Database.BatchableContext info){ \n       return new CustomAccountIterable(); \n   }     \n   public void execute(Database.BatchableContext info, List&lt;Account&gt; scope){\n       List&lt;Account&gt; accsToUpdate = new List&lt;Account&gt;();\n       for(Account a : scope){ \n           a.Name = 'true'; \n           a.NumberOfEmployees = 70; \n           accsToUpdate.add(a); \n       } \n       update accsToUpdate; \n   }     \n   public void finish(Database.BatchableContext info){     \n   } \n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><a><\/a>\u4f7f\u7528&nbsp;Database.executeBatch&nbsp;\u65b9\u6cd5\u63d0\u4ea4\u6279\u5904\u7406\u4f5c\u4e1a<\/h2>\n\n\n\n<p>\u60a8\u53ef\u4ee5\u4f7f\u7528\u8be5\u65b9\u6cd5 \u4ee5\u7f16\u7a0b\u65b9\u5f0f\u5f00\u59cb\u6279\u5904\u7406\u4f5c\u4e1a\u3002<\/p>\n\n\n\n<p><samp>Database.executeBatch<\/samp><\/p>\n\n\n\n<p>\u91cd\u8981<\/p>\n\n\n\n<p><a><\/a>\u5f53\u60a8\u8c03\u7528 \u65f6\uff0cSalesforce \u4f1a\u5c06\u6d41\u7a0b\u6dfb\u52a0\u5230 \u961f\u5217\u3002\u5b9e\u9645\u6267\u884c\u53ef\u80fd\u4f1a\u6839\u636e\u670d\u52a1\u5ef6\u8fdf \u53ef\u7528\u6027\u3002<samp>Database.executeBatch<\/samp>\u8be5\u65b9\u6cd5\u91c7\u7528\u4e24\u4e2a\u53c2\u6570\uff1a<\/p>\n\n\n\n<p><samp>Database.executeBatch<\/samp><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5b9e\u73b0\u63a5\u53e3\u7684\u7c7b\u7684\u5b9e\u4f8b\u3002<samp>Database.Batchable<\/samp><\/li>\n\n\n\n<li><a><\/a>\u53ef\u9009\u53c2\u6570 \u3002\u6b64\u53c2\u6570\u6307\u5b9a \u8981\u4f20\u9012\u5230\u65b9\u6cd5\u4e2d\u7684\u8bb0\u5f55\u3002<var>scope<\/var><samp>execute<\/samp><a><\/a>\u4f7f\u7528\u8fd9\u4e2a \u53c2\u6570\uff0c\u5f53\u60a8\u5bf9\u8981\u4f20\u9012\u7684\u6bcf\u6761\u8bb0\u5f55\u6267\u884c\u8bb8\u591a\u64cd\u4f5c\u65f6 \u5e76\u4e14\u6b63\u5728\u9047\u5230\u8c03\u63a7\u5668\u9650\u5236\u3002\u901a\u8fc7\u9650\u5236\u6570\u91cf \u8bb0\u5f55\uff0c\u5219\u9650\u5236\u4e86\u6bcf\u7b14\u4ea4\u6613\u7684\u64cd\u4f5c\u3002\u6b64\u503c \u5fc5\u987b\u5927\u4e8e\u96f6\u3002\u5982\u679c\u6279\u5904\u7406\u7c7b\u7684\u65b9\u6cd5\u8fd4\u56de QueryLocator\uff0c \u53ef\u9009\u8303\u56f4\u53c2\u6570\u7684\u6700\u5927\u503c\u4e3a<samp>start<\/samp><samp>Database.executeBatch<\/samp><a><\/a>2,000.\u5982\u679c\u8bbe\u7f6e\u4e3a\u66f4\u9ad8\u7684\u503c\uff0c\u5219 Salesforce \u5c06 QueryLocator \u8fd4\u56de\u7684\u8bb0\u5f55\u5206\u5757\u4e3a\u66f4\u5c0f\u7684\u6279\u6b21 \u6700\u591a 2,000 \u6761\u8bb0\u5f55\u3002\u5982\u679c\u6279\u5904\u7406\u7684\u65b9\u6cd5 \u7c7b\u8fd4\u56de\u4e00\u4e2a\u53ef\u8fed\u4ee3\u5bf9\u8c61\uff0cscope \u53c2\u6570\u503c\u6ca1\u6709\u4e0a\u9650\u3002 \u4f46\u662f\uff0c\u5982\u679c\u4f7f\u7528\u8f83\u9ad8\u7684\u6570\u5b57\uff0c\u5219\u53ef\u80fd\u4f1a\u9047\u5230\u5176\u4ed6\u9650\u5236\u3002\u8fd9 \u6700\u4f73\u793a\u6ce2\u5668\u5927\u5c0f\u662f 2000 \u7684\u7cfb\u6570\uff0c\u4f8b\u5982 100\u3001200\u3001400 \u548c \u7b49\u7b49\u3002<samp>start<\/samp><\/li>\n<\/ul>\n\n\n\n<p>\u8be5\u65b9\u6cd5\u8fd4\u56de AsyncApexJob \u5bf9\u8c61\u7684 ID\uff0c\u53ef\u7528\u4e8e\u8ddf\u8e2a\u4f5c\u4e1a\u7684\u8fdb\u5ea6\u3002 \u4f8b\u5982\uff1a<\/p>\n\n\n\n<p><samp>Database.executeBatch<\/samp><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>ID batchprocessid = Database.executeBatch(reassign);\n\nAsyncApexJob aaj = &#91;SELECT Id, Status, JobItemsProcessed, TotalJobItems, NumberOfErrors \n                    FROM AsyncApexJob WHERE ID =: batchprocessid ];<\/code><\/pre>\n\n\n\n<p>\u8fd8\u53ef\u4ee5\u5c06\u6b64 ID \u4e0e\u00a0<samp>System.abortJob<\/samp>\u00a0\u65b9\u6cd5\u4e00\u8d77\u4f7f\u7528\u3002<\/p>\n\n\n\n<p>\u6709\u5173\u8be6\u7ec6\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605\u5bf9\u8c61\u4e2d\u7684\u00a0AsyncApexJob\u00a0Salesforce \u53c2\u8003\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><a><\/a>\u5728 Apex Flex \u4e2d\u4fdd\u5b58\u6279\u5904\u7406\u4f5c\u4e1a \u961f\u5217<\/h2>\n\n\n\n<p>\u4f7f\u7528 Apex flex \u961f\u5217\uff0c\u60a8\u6700\u591a\u53ef\u4ee5\u63d0\u4ea4 100 \u4e2a\u6279\u6b21 \u5de5\u4f5c\u3002\u7ed3\u679c\u5982\u4e0b\u3002<\/p>\n\n\n\n<p><samp>Database.executeBatch<\/samp><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6279\u5904\u7406\u4f5c\u4e1a\u5c06\u653e\u7f6e\u5728 Apex flex \u961f\u5217\u4e2d\uff0c\u5176\u72b6\u6001\u8bbe\u7f6e\u4e3a \u3002<samp>Holding<\/samp><\/li>\n\n\n\n<li>\u5982\u679c Apex flex \u961f\u5217\u7684\u6700\u5927\u4f5c\u4e1a\u6570\u4e3a 100 \u4e2a\uff0c\u5219\u629b\u51fa\u4e00\u4e2a\u5e76\u4e14\u4e0d\u6dfb\u52a0\u8be5\u4f5c\u4e1a \u5230\u961f\u5217\u3002<samp>Database.executeBatch<\/samp><samp>LimitException<\/samp><\/li>\n<\/ul>\n\n\n\n<p>\u6ce8\u610f<\/p>\n\n\n\n<p>\u5982\u679c\u60a8\u7684\u7ec4\u7ec7\u672a\u542f\u7528 Apex flex \u961f\u5217\uff0c\u8bf7\u5c06\u6279\u5904\u7406\u4f5c\u4e1a\u6dfb\u52a0\u5230 \u5177\u6709\u72b6\u6001\u7684\u6279\u5904\u7406\u4f5c\u4e1a\u961f\u5217\u3002\u5982\u679c \u5df2\u8fbe\u5230\u6392\u961f\u6216\u6d3b\u52a8\u6279\u5904\u7406\u4f5c\u4e1a\u7684\u5e76\u53d1\u9650\u5236\uff0c\u5f15\u53d1\u4e86 A\uff0c\u4f46\u4f5c\u4e1a\u672a \u6392\u961f\u3002<samp>Database.executeBatch<\/samp><samp>Queued<\/samp><samp>LimitException<\/samp><\/p>\n\n\n\n<p><strong>\u5bf9 Apex Flex \u961f\u5217\u4e2d\u7684\u4f5c\u4e1a\u91cd\u65b0\u6392\u5e8f<\/strong><\/p>\n\n\n\n<p>\u63d0\u4ea4\u65f6 \u4f5c\u4e1a\u7684\u72b6\u6001\u4e3a \uff0c\u53ef\u4ee5 \u5728 Salesforce \u7528\u6237\u754c\u9762\u4e2d\u5bf9\u5b83\u4eec\u91cd\u65b0\u6392\u5e8f\uff0c\u4ee5\u63a7\u5236\u54ea\u4e9b\u6279\u5904\u7406\u4f5c\u4e1a\u662f \u9996\u5148\u5904\u7406\u3002\u4e3a\u6b64\uff0c\u8bf7\u4ece\u201c\u8bbe\u7f6e\u201d\u4e2d\u8f93\u5165\u201c\u5feb\u901f\u67e5\u627e\u201d\u6846\uff0c\u7136\u540e\u9009\u62e9<strong>\u201cApex Flex\u201d \u961f\u5217<\/strong>\u3002<samp>Holding<\/samp><kbd>Apex Flex Queue<\/kbd><\/p>\n\n\n\n<p>\u6216\u8005\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528 Apex \u65b9\u6cd5\u91cd\u65b0\u6392\u5e8f Flex \u961f\u5217\u4e2d\u7684\u6279\u5904\u7406\u4f5c\u4e1a\u3002\u82e5\u8981\u5c06\u4f5c\u4e1a\u79fb\u52a8\u5230\u65b0\u4f4d\u7f6e\uff0c\u8bf7\u8c03\u7528\u00a0<samp>System.FlexQueue<\/samp>\u00a0\u65b9\u6cd5\u4e4b\u4e00\u3002\u5c06\u4f5c\u4e1a ID \u4f20\u9012\u7ed9\u8be5\u65b9\u6cd5\uff0c \u5982\u679c\u9002\u7528\uff0c\u5219\u4e3a\u79fb\u52a8\u4f5c\u4e1a\u7684\u65b0\u804c\u4f4d\u65c1\u8fb9\u7684\u4f5c\u4e1a ID\u3002\u4e3a \u4f8b\uff1a<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Boolean isSuccess = System.FlexQueue.moveBeforeJob(jobToMoveId, jobInQueueId);<\/code><\/pre>\n\n\n\n<p>\u60a8\u53ef\u4ee5\u5bf9 Apex flex \u961f\u5217\u4e2d\u7684\u4f5c\u4e1a\u91cd\u65b0\u6392\u5e8f\uff0c\u4ee5\u786e\u5b9a\u4f5c\u4e1a\u7684\u4f18\u5148\u7ea7\u3002\u4e3a \u4f8b\u5982\uff0c\u60a8\u53ef\u4ee5\u5c06\u6279\u5904\u7406\u4f5c\u4e1a\u79fb\u52a8\u5230\u4fdd\u7559\u961f\u5217\u4e2d\u7684\u7b2c\u4e00\u4e2a\u4f4d\u7f6e \u5f53\u8d44\u6e90\u53ef\u7528\u65f6\uff0c\u9996\u5148\u5904\u7406\u3002\u5426\u5219\uff0c\u5c06\u5904\u7406\u4f5c\u4e1a \u201c\u5148\u8fdb\u5148\u51fa\u201d\u2014\u2014\u6309\u63d0\u4ea4\u987a\u5e8f\u6392\u5217\u3002<\/p>\n\n\n\n<p>\u5f53\u7cfb\u7edf \u8d44\u6e90\u53d8\u4e3a\u53ef\u7528\uff0c\u7cfb\u7edf\u5c06\u4ece Apex flex \u961f\u5217\uff0c\u5e76\u5c06\u5176\u79fb\u52a8\u5230\u6279\u5904\u7406\u4f5c\u4e1a\u961f\u5217\u3002\u8be5\u7cfb\u7edf\u53ef\u4ee5\u5904\u7406\u591a\u8fbe \u6bcf\u4e2a\u7ec4\u7ec7\u540c\u65f6\u6709 5 \u4e2a\u6392\u961f\u6216\u6d3b\u52a8\u7684\u4f5c\u4e1a\u3002\u8fd9\u4e9b\u72b6\u6001 \u5c06\u4f5c\u4e1a\u66f4\u6539\u4ece \u79fb\u52a8\u5230 \u3002\u6392\u961f\u7684\u4f5c\u4e1a\u5728\u7cfb\u7edf\u6267\u884c\u65f6\u6267\u884c \u5df2\u51c6\u5907\u597d\u5904\u7406\u65b0\u4f5c\u4e1a\u3002\u60a8\u53ef\u4ee5\u5728 Apex \u4f5c\u4e1a\u4e0a\u76d1\u63a7\u6392\u961f\u7684\u4f5c\u4e1a \u9875\u3002<samp>Holding<\/samp><samp>Queued<\/samp><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u6279\u5904\u7406\u4f5c\u4e1a\u72b6\u6001<\/h2>\n\n\n\n<p>\u4e0b\u8868\u5217\u51fa\u4e86\u6279\u5904\u7406\u4f5c\u4e1a\u7684\u6240\u6709\u53ef\u80fd\u72b6\u6001\u4ee5\u53ca \u6bcf\u4e2a\u7684\u63cf\u8ff0\u3002<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>\u5730\u4f4d<\/th><th>\u63cf\u8ff0<\/th><\/tr><\/thead><tbody><tr><td>\u5360\u6709<\/td><td>\u4f5c\u4e1a\u5df2\u63d0\u4ea4\u5e76\u4fdd\u7559\u5728 Apex flex \u961f\u5217\u4e2d\uff0c\u76f4\u5230 \u7cfb\u7edf\u8d44\u6e90\u53ef\u7528\u4e8e\u5bf9\u4f5c\u4e1a\u8fdb\u884c\u6392\u961f \u52a0\u5de5\u3002<\/td><\/tr><tr><td>\u6392\u961f<\/td><td>\u4f5c\u4e1a\u6b63\u5728\u7b49\u5f85\u6267\u884c\u3002<\/td><\/tr><tr><td>\u51c6\u5907<\/td><td>\u65b9\u6cd5 job \u5df2\u88ab\u8c03\u7528\u3002\u6b64\u72b6\u6001\u53ef\u80fd\u4f1a\u6301\u7eed\u51e0\u5206\u949f\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e \u5173\u4e8e\u6279\u91cf\u8bb0\u5f55\u7684\u5927\u5c0f\u3002<samp>start<\/samp><\/td><\/tr><tr><td>\u52a0\u5de5<\/td><td>\u6b63\u5728\u5904\u7406\u4f5c\u4e1a\u3002<\/td><\/tr><tr><td>\u4e2d\u6b62<\/td><td>\u7528\u6237\u5df2\u4e2d\u6b62\u4f5c\u4e1a\u3002<\/td><\/tr><tr><td>\u5b8c\u6210<\/td><td>\u4f5c\u4e1a\u5df2\u5b8c\u6210\uff0c\u4f46\u6709\u6216\u6ca1\u6709\u5931\u8d25\u3002<\/td><\/tr><tr><td>\u5931\u8d25<\/td><td>\u4f5c\u4e1a\u9047\u5230\u7cfb\u7edf\u6545\u969c\u3002<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><a><\/a>\u4f7f\u7528&nbsp;System.scheduleBatch&nbsp;\u65b9\u6cd5<\/h2>\n\n\n\n<p>\u60a8\u53ef\u4ee5\u4f7f\u7528\u8be5\u65b9\u6cd5 \u5c06\u6279\u5904\u7406\u4f5c\u4e1a\u5b89\u6392\u4e3a\u5728\u5c06\u6765\u8fd0\u884c\u4e00\u6b21\u3002<samp>System.scheduleBatch<\/samp>\u8be5\u65b9\u6cd5\u91c7\u7528\u4ee5\u4e0b\u53c2\u6570\u3002<\/p>\n\n\n\n<p><samp>System.scheduleBatch<\/samp><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5b9e\u73b0\u63a5\u53e3\u7684\u7c7b\u7684\u5b9e\u4f8b\u3002<samp>Database.Batchable<\/samp><\/li>\n\n\n\n<li>\u4f5c\u4e1a\u540d\u79f0\u3002<\/li>\n\n\n\n<li>\u4f5c\u4e1a\u5f00\u59cb\u6267\u884c\u7684\u65f6\u95f4\u95f4\u9694\uff08\u4ee5\u5206\u949f\u4e3a\u5355\u4f4d\uff09\u3002<\/li>\n\n\n\n<li>\u53ef\u9009\u8303\u56f4\u503c\u3002\u6b64\u53c2\u6570\u6307\u5b9a\u8981 \u4f20\u5165\u65b9\u6cd5\u3002\u4f7f\u7528\u8fd9\u4e2a \u53c2\u6570\uff0c\u5f53\u60a8\u5bf9\u8981\u4f20\u9012\u7684\u6bcf\u6761\u8bb0\u5f55\u6267\u884c\u8bb8\u591a\u64cd\u4f5c\u65f6 \u5e76\u4e14\u6b63\u5728\u9047\u5230\u8c03\u63a7\u5668\u9650\u5236\u3002\u901a\u8fc7\u9650\u5236\u6570\u91cf \u8bb0\u5f55\uff0c\u5219\u9650\u5236\u4e86\u6bcf\u7b14\u4ea4\u6613\u7684\u64cd\u4f5c\u3002\u6b64\u503c \u5fc5\u987b\u5927\u4e8e\u96f6\u3002\u5982\u679c\u6279\u5904\u7406\u7c7b\u7684\u65b9\u6cd5\u8fd4\u56de QueryLocator\uff0c \u53ef\u9009\u8303\u56f4\u53c2\u6570\u7684\u6700\u5927\u503c\u4e3a<samp>execute<\/samp><samp>start<\/samp><samp>Database.executeBatch<\/samp><a><\/a>2,000.\u5982\u679c\u8bbe\u7f6e\u4e3a\u66f4\u9ad8\u7684\u503c\uff0c\u5219 Salesforce \u5c06 QueryLocator \u8fd4\u56de\u7684\u8bb0\u5f55\u5206\u5757\u4e3a\u66f4\u5c0f\u7684\u6279\u6b21 \u6700\u591a 2,000 \u6761\u8bb0\u5f55\u3002\u5982\u679c\u6279\u5904\u7406\u7684\u65b9\u6cd5 \u7c7b\u8fd4\u56de\u4e00\u4e2a\u53ef\u8fed\u4ee3\u5bf9\u8c61\uff0cscope \u53c2\u6570\u503c\u6ca1\u6709\u4e0a\u9650\u3002 \u4f46\u662f\uff0c\u5982\u679c\u4f7f\u7528\u8f83\u9ad8\u7684\u6570\u5b57\uff0c\u5219\u53ef\u80fd\u4f1a\u9047\u5230\u5176\u4ed6\u9650\u5236\u3002\u8fd9 \u6700\u4f73\u793a\u6ce2\u5668\u5927\u5c0f\u662f 2000 \u7684\u7cfb\u6570\uff0c\u4f8b\u5982 100\u3001200\u3001400 \u548c \u7b49\u7b49\u3002<samp>start<\/samp><\/li>\n<\/ul>\n\n\n\n<p id=\"scheduleBatch_returnValue\"><a><\/a>\u8be5\u65b9\u6cd5\u8fd4\u56de\u8ba1\u5212\u7684\u4f5c\u4e1a ID \uff08CronTrigger ID\uff09\u3002<samp>System.scheduleBatch<\/samp>\u6b64\u793a\u4f8b\u5c06\u6279\u5904\u7406\u4f5c\u4e1a\u5b89\u6392\u5728 60 \u5206\u949f\u5185\u8fd0\u884c \u73b0\u5728\u901a\u8fc7\u8c03\u7528 .\u8fd9 \u793a\u4f8b\u5411\u6b64\u65b9\u6cd5\u4f20\u9012\u6279\u5904\u7406\u7c7b\uff08\u53d8\u91cf\uff09\u3001\u4f5c\u4e1a\u540d\u79f0\u548c\u65f6\u95f4\u7684\u5b9e\u4f8b \u95f4\u9694 60 \u5206\u949f\u3002\u53ef\u9009\u53c2\u6570\u5df2 \u7701\u7565\u3002\u8be5\u65b9\u6cd5\u8fd4\u56de\u8ba1\u5212\u4f5c\u4e1a ID\uff0c\u7528\u4e8e\u67e5\u8be2 CronTrigger \u83b7\u53d6\u76f8\u5e94\u8ba1\u5212\u7684\u72b6\u6001 \u5de5\u4f5c\u3002<\/p>\n\n\n\n<p><samp>System.scheduleBatch<\/samp><samp>reassign<\/samp><var>scope<\/var><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>String cronID = System.scheduleBatch(reassign, 'job example', 60);\n\nCronTrigger ct = &#91;SELECT Id, TimesTriggered, NextFireTime\n                FROM CronTrigger WHERE Id = :cronID];\n\n\/\/ TimesTriggered should be 0 because the job hasn't started yet.\nSystem.assertEquals(0, ct.TimesTriggered);\nSystem.debug('Next fire time: ' + ct.NextFireTime); \n\/\/ For example:\n\/\/ Next fire time: 2013-06-03 13:31:23<\/code><\/pre>\n\n\n\n<p>\u6709\u5173\u8be6\u7ec6\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605\u5bf9\u8c61\u4e2d\u7684\u00a0CronTrigger\u00a0Salesforce \u53c2\u8003\u3002<\/p>\n\n\n\n<p>\u6ce8\u610f<\/p>\n\n\n\n<p>\u9700\u8981\u6ce8\u610f\u7684\u4e00\u4e9b\u4e8b\u9879\uff1a<samp>System.scheduleBatch<\/samp><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5f53\u60a8\u8c03\u7528 \uff0c Salesforce \u8ba1\u5212\u5728\u6307\u5b9a\u65f6\u95f4\u6267\u884c\u4f5c\u4e1a\u3002\u5b9e\u9645 \u5728\u8be5\u65f6\u95f4\u6216\u4e4b\u540e\u6267\u884c\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u670d\u52a1 \u53ef\u7528\u6027\u3002<samp>System.scheduleBatch<\/samp><\/li>\n\n\n\n<li>\u8c03\u5ea6\u7a0b\u5e8f\u4f5c\u4e3a\u7cfb\u7edf\u8fd0\u884c\u2014\u2014\u6240\u6709\u7c7b\u90fd\u5df2\u6267\u884c\uff0c\u65e0\u8bba \u7528\u6237\u662f\u5426\u6709\u6743\u6267\u884c\u8be5\u7c7b\u3002<\/li>\n\n\n\n<li>\u89e6\u53d1\u4f5c\u4e1a\u7684\u8ba1\u5212\u65f6\uff0c\u7cfb\u7edf\u4f1a\u5c06\u6279\u5904\u7406\u4f5c\u4e1a\u6392\u5165\u961f\u5217 \u52a0\u5de5\u3002\u5982\u679c\u5728\u60a8\u7684\u7ec4\u7ec7\u4e2d\u542f\u7528\u4e86 Apex flex \u961f\u5217\uff0c\u5219\u6279\u5904\u7406\u4f5c\u4e1a\u4e3a \u6dfb\u52a0\u5230 Flex \u961f\u5217\u7684\u672b\u5c3e\u3002\u6709\u5173\u66f4\u591a\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605\u5c06\u6279\u5904\u7406\u4f5c\u4e1a\u4fdd\u5b58\u5728 Apex Flex \u961f\u5217\u3002<\/li>\n\n\n\n<li><a><\/a>\u6240\u6709\u8ba1\u5212\u7684 Apex \u9650\u5236\u90fd\u9002\u7528\u4e8e\u6279\u5904\u7406\u4f5c\u4e1a \u8ba1\u5212\u4f7f\u7528 \u3002\u6279\u5904\u7406\u4f5c\u4e1a\u6392\u961f\u540e\uff08\u4f7f\u7528 \u72b6\u6001\u4e3a \u6216 \uff09\uff0c\u6240\u6709\u6279\u5904\u7406\u4f5c\u4e1a\u9650\u5236\u90fd\u9002\u7528 \u5e76\u4e14\u4f5c\u4e1a\u4e0d\u518d\u8ba1\u5165\u8ba1\u5212\u7684 Apex \u9650\u5236\u3002<samp>System.scheduleBatch<\/samp><samp>Holding<\/samp><samp>Queued<\/samp><\/li>\n\n\n\n<li>\u8c03\u7528\u6b64\u65b9\u6cd5\u540e\uff0c\u5728\u6279\u5904\u7406\u4f5c\u4e1a\u5f00\u59cb\u4e4b\u524d\uff0c\u53ef\u4ee5\u4f7f\u7528 \u8fd4\u56de\u8ba1\u5212\u7684\u4f5c\u4e1a ID \u4ee5\u4f7f\u7528\u00a0<samp>System.abortJob<\/samp>\u00a0\u65b9\u6cd5\u4e2d\u6b62\u8ba1\u5212\u4f5c\u4e1a\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><a><\/a>Batch Apex \u793a\u4f8b<\/h2>\n\n\n\n<p>\u4ee5\u4e0b\u793a\u4f8b\u4f7f\u7528 \uff1a<\/p>\n\n\n\n<p><samp>Database.QueryLocator<\/samp><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class UpdateAccountFields implements Database.Batchable&lt;sObject&gt;{\n   public final String Query;\n   public final String Entity;\n   public final String Field;\n   public final String Value;\n\n   public UpdateAccountFields(String q, String e, String f, String v){\n             Query=q; Entity=e; Field=f;Value=v;\n   }\n\n   public Database.QueryLocator start(Database.BatchableContext BC){\n      return Database.getQueryLocator(query);\n   }\n\n   public void execute(Database.BatchableContext BC, \n                       List&lt;sObject&gt; scope){\n      for(Sobject s : scope){s.put(Field,Value); \n      }      update scope;\n   }\n\n   public void finish(Database.BatchableContext BC){\n\n   }\n\n}<\/code><\/pre>\n\n\n\n<p>\u60a8\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u4ee3\u7801\u8c03\u7528\u4e0a\u4e00\u4e2a \u7c7b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ Query for 10 accounts\nString q = 'SELECT Industry FROM Account LIMIT 10';\nString e = 'Account';\nString f = 'Industry';\nString v = 'Consulting';\nId batchInstanceId = Database.executeBatch(new UpdateAccountFields(q,e,f,v), 5);<\/code><\/pre>\n\n\n\n<p>\u82e5\u8981\u6392\u9664\u5df2\u5220\u9664\u4f46\u4ecd\u5728\u56de\u6536\u7ad9\u4e2d\u7684\u5e10\u6237\u6216\u53d1\u7968\uff0c \u5305\u542b\u5728 SOQL \u67e5\u8be2\u4e2d WHERE \u5b50\u53e5\uff0c\u5982\u8fd9\u4e9b\u4fee\u6539\u540e\u7684 \u6837\u54c1\u3002<\/p>\n\n\n\n<p><samp>isDeleted=false<\/samp><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ Query for accounts that aren't in the Recycle Bin\nString q = 'SELECT Industry FROM Account WHERE isDeleted=false LIMIT 10';\nString e = 'Account';\nString f = 'Industry';\nString v = 'Consulting';\nId batchInstanceId = Database.executeBatch(new UpdateAccountFields(q,e,f,v), 5);<\/code><\/pre>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ Query for invoices that aren't in the Recycle Bin\nString q = \n  'SELECT Description__c FROM Invoice_Statement__c WHERE isDeleted=false LIMIT 10';\nString e = 'Invoice_Statement__c';\nString f = 'Description__c';\nString v = 'Updated description';\nId batchInstanceId = Database.executeBatch(new UpdateInvoiceFields(q,e,f,v), 5);<\/code><\/pre>\n\n\n\n<p>\u4ee5\u4e0b\u7c7b\u4f7f\u7528\u6279\u5904\u7406 Apex \u91cd\u65b0\u5206\u914d\u7279\u5b9a\u7528\u6237\u62e5\u6709\u7684\u6240\u6709\u5e10\u6237 \u7ed9\u5176\u4ed6\u7528\u6237\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class OwnerReassignment implements Database.Batchable&lt;sObject&gt;{\nString query;\nString email;\nId toUserId;\nId fromUserId;\n\npublic Database.querylocator start(Database.BatchableContext BC){\n            return Database.getQueryLocator(query);}\n\npublic void execute(Database.BatchableContext BC, List&lt;sObject&gt; scope){\n    List&lt;Account&gt; accns = new List&lt;Account&gt;();\n\n   for(sObject s : scope){Account a = (Account)s;\n        if(a.OwnerId==fromUserId){\n            a.OwnerId=toUserId;\n            accns.add(a);\n            }\n        }\n\nupdate accns;\n    \n}\npublic void finish(Database.BatchableContext BC){\nMessaging.SingleEmailMessage mail = new Messaging.SingleEmailMessage();\n\nmail.setToAddresses(new String&#91;] {email});\nmail.setReplyTo('batch@acme.com');\nmail.setSenderDisplayName('Batch Processing');\nmail.setSubject('Batch Process Completed');\nmail.setPlainTextBody('Batch Process has completed');\n\nMessaging.sendEmail(new Messaging.SingleEmailMessage&#91;] { mail });\n}\n}<\/code><\/pre>\n\n\n\n<p>\u4f7f\u7528\u4ee5\u4e0b\u547d\u4ee4\u6267\u884c\u4e0a\u4e00\u4e2a\u4e2d\u7684\u7c7b \u4f8b\u3002<\/p>\n\n\n\n<p><samp>OwnerReassignment<\/samp><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>OwnerReassignment reassign = new OwnerReassignment();\nreassign.query = 'SELECT Id, Name, Ownerid FROM Account ' + \n                'WHERE ownerid=\\'' + u.id + '\\'';\nreassign.email='admin@acme.com';\nreassign.fromUserId = u;\nreassign.toUserId = u2;\nID batchprocessid = Database.executeBatch(reassign);<\/code><\/pre>\n\n\n\n<p>\u4ee5\u4e0b\u662f\u7528\u4e8e\u5220\u9664\u7684\u6279\u5904\u7406 Apex \u7c7b\u7684\u793a\u4f8b \u8bb0\u5f55\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class BatchDelete implements Database.Batchable&lt;sObject&gt; {\n   public String query;\n\n   public Database.QueryLocator start(Database.BatchableContext BC){\n      return Database.getQueryLocator(query);\n   }\n\n   public void execute(Database.BatchableContext BC, List&lt;sObject&gt; scope){\n      delete scope;\n      DataBase.emptyRecycleBin(scope);\n   }\n\n   public void finish(Database.BatchableContext BC){\n   }\n}<\/code><\/pre>\n\n\n\n<p>\u6b64\u4ee3\u7801\u8c03\u7528\u6279\u5904\u7406 Apex \u7c7b\u5220\u9664\u65e7\u6587\u6863\u3002\u6307\u5b9a\u7684\u67e5\u8be2\u9009\u62e9\u8981\u5220\u9664\u7684\u6587\u6863 \u6307\u5b9a\u6587\u4ef6\u5939\u4e2d\u4e14\u65e9\u4e8e\u6307\u5b9a\u6587\u4ef6\u5939\u7684\u6240\u6709\u6587\u6863 \u65e5\u671f\u3002\u63a5\u4e0b\u6765\uff0c\u793a\u4f8b\u8c03\u7528\u6279\u5904\u7406 \u5de5\u4f5c\u3002<\/p>\n\n\n\n<p><samp>BatchDelete<\/samp><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>BatchDelete BDel = new BatchDelete();\nDatetime d = Datetime.now();\nd = d.addDays(-1);\n\/\/ Replace this value with the folder ID that contains\n\/\/ the documents to delete.\nString folderId = '00lD000000116lD';\n\/\/ Query for selecting the documents to delete\nBDel.query = 'SELECT Id FROM Document WHERE FolderId=\\'' + folderId + \n    '\\' AND CreatedDate &lt; '+d.format('yyyy-MM-dd')+'T'+\n    d.format('HH:mm')+':00.000Z';\n\/\/ Invoke the batch job.\nID batchprocessid = Database.executeBatch(BDel);\nSystem.debug('Returned batch process ID: ' + batchProcessId);<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\"><a><\/a>\u5728 Batch Apex \u4e2d\u4f7f\u7528\u6807\u6ce8<\/h2>\n\n\n\n<p>\u8981\u5728\u6279\u5904\u7406 Apex \u4e2d\u4f7f\u7528\u6807\u6ce8\uff0c\u8bf7\u5728\u7c7b\u4e2d\u6307\u5b9a \u5b9a\u4e49\u3002\u4e3a \u4f8b\uff1a<\/p>\n\n\n\n<p><samp>Database.AllowsCallouts<\/samp><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class SearchAndReplace implements Database.Batchable&lt;sObject&gt;, \n   Database.AllowsCallouts{\n}<\/code><\/pre>\n\n\n\n<p>\u6807\u6ce8\u5305\u62ec\u4f7f\u7528 KEYWORD \u5b9a\u4e49\u7684 HTTP \u8bf7\u6c42\u548c\u65b9\u6cd5\u3002<samp>webservice<\/samp><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><a><\/a>\u5728 Batch Apex \u4e2d\u4f7f\u7528\u72b6\u6001<\/h2>\n\n\n\n<p>\u6279\u5904\u7406 Apex \u4f5c\u4e1a\u7684\u6bcf\u6b21\u6267\u884c\u90fd\u88ab\u89c6\u4e3a\u79bb\u6563\u4e8b\u52a1\u3002\u4f8b\u5982 \u5305\u542b 1,000 \u6761\u8bb0\u5f55\u4e14\u5728\u6ca1\u6709\u53ef\u9009\u53c2\u6570\u7684\u60c5\u51b5\u4e0b\u6267\u884c\u7684\u6279\u5904\u7406 Apex \u4f5c\u4e1a\u88ab\u89c6\u4e3a 200 \u4e2a\u4e8b\u52a1\u7684 5 \u4e2a\u4e8b\u52a1 \u8bb0\u5f55\u6bcf\u4e2a\u3002<var>scope<\/var><\/p>\n\n\n\n<p>\u5982\u679c\u5728 \u7c7b\u5b9a\u4e49\uff0c\u60a8\u53ef\u4ee5\u5728\u8fd9\u4e9b\u4e8b\u52a1\u4e2d\u7ef4\u62a4\u72b6\u6001\u3002\u4f7f\u7528 \u65f6\uff0c\u4ec5\u9650\u5b9e\u4f8b\u6210\u5458 \u53d8\u91cf\u5728\u4e8b\u52a1\u4e4b\u95f4\u4fdd\u7559\u5176\u503c\u3002\u9759\u6001\u6210\u5458\u53d8\u91cf\u4e0d\u4f1a \u4fdd\u7559\u5176\u503c\u5e76\u5728\u4ea4\u6613\u4e4b\u95f4\u91cd\u7f6e\u3002\u7ef4\u62a4\u72b6\u6001\u5f88\u6709\u7528 \u7528\u4e8e\u5728\u5904\u7406\u8bb0\u5f55\u65f6\u5bf9\u8bb0\u5f55\u8fdb\u884c\u8ba1\u6570\u6216\u6c47\u603b\u3002\u4f8b\u5982\uff0c\u5047\u8bbe\u4f60\u7684 \u4f5c\u4e1a\u6d41\u7a0b\u5546\u673a\u8bb0\u5f55\u3002\u60a8\u53ef\u4ee5\u5b9a\u4e49\u4e00\u79cd\u65b9\u6cd5\u6765\u805a\u5408\u5546\u673a\u7684\u603b\u6570 \u5904\u7406\u65f6\u7684\u91d1\u989d\u3002<samp>Database.Stateful<\/samp><samp>Database.Stateful<\/samp><samp>execute<\/samp><\/p>\n\n\n\n<p>\u5982\u679c\u672a\u6307\u5b9a \uff0c\u5219\u6240\u6709 \u9759\u6001\u548c\u5b9e\u4f8b\u6210\u5458\u53d8\u91cf\u5c06\u8bbe\u7f6e\u56de\u5176\u539f\u59cb\u503c\u3002<samp>Database.Stateful<\/samp>\u4ee5\u4e0b\u793a\u4f8b\u5c06\u81ea\u5b9a\u4e49\u5b57\u6bb5total__c\u6c47\u603b\u4e3a \u8bb0\u5f55\u662f \u5904\u7406\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class SummarizeAccountTotal implements \n    Database.Batchable&lt;sObject&gt;, Database.Stateful{\n\n   public final String Query;\n   public integer Summary;\n  \n   public SummarizeAccountTotal(String q){Query=q;\n     Summary = 0;\n   }\n\n   public Database.QueryLocator start(Database.BatchableContext BC){\n      return Database.getQueryLocator(query);\n   }\n   \n   public void execute(\n                Database.BatchableContext BC, \n                List&lt;sObject&gt; scope){\n      for(sObject s : scope){\n         Summary = Integer.valueOf(s.get('total__c'))+Summary;\n      }\n   }\n\npublic void finish(Database.BatchableContext BC){\n   }\n}<\/code><\/pre>\n\n\n\n<p>\u6b64\u5916\uff0c\u8fd8\u53ef\u4ee5\u6307\u5b9a\u4e00\u4e2a\u53d8\u91cf\u6765\u8bbf\u95ee\u7c7b\u7684\u521d\u59cb\u72b6\u6001\u3002\u4f60 \u53ef\u4ee5\u4f7f\u7528\u6b64\u53d8\u91cf\u4e0e\u65b9\u6cd5\u7684\u6240\u6709\u5b9e\u4f8b\u5171\u4eab\u521d\u59cb\u72b6\u6001\u3002\u4e3a \u4f8b\uff1a<\/p>\n\n\n\n<p><samp>Database.Batchable<\/samp><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>\/\/ Implement the interface using a list of Account sObjects\n\/\/ Note that the initialState variable is declared as final\n\npublic class MyBatchable implements Database.Batchable&lt;sObject&gt; {\n  private final String initialState;\n  String query;\n  \n  public MyBatchable(String intialState) {\n    this.initialState = initialState;\n  }\n\n  public Database.QueryLocator start(Database.BatchableContext BC) {\n    \/\/ Access initialState here \n    \n    return Database.getQueryLocator(query);\n  }\n\n  public void execute(Database.BatchableContext BC, \n                      List&lt;sObject&gt; batch) {\n    \/\/ Access initialState here \n    \n  }\n\n  public void finish(Database.BatchableContext BC) {\n    \/\/ Access initialState here \n    \n  }\n}<\/code><\/pre>\n\n\n\n<p>\u4ec5\u5b58\u50a8\u7c7b\u7684<em>\u521d\u59cb<\/em>\u72b6\u6001\u3002\u60a8\u4e0d\u80fd\u4f7f\u7528\u5b83\u5728 \u5728\u6279\u5904\u7406\u4f5c\u4e1a\u6267\u884c\u671f\u95f4\u7c7b\u7684\u5b9e\u4f8b\u3002\u4f8b\u5982\uff0c\u5982\u679c\u5c06 in \u7684\u503c\uff0c\u5373\u5df2\u5904\u7406\u8bb0\u5f55\u7684\u7b2c\u4e8c\u4e2a\u5757 \u65e0\u6cd5\u8bbf\u95ee\u65b0\u503c\u3002\u53ea\u6709\u521d\u59cb\u503c\u662f\u53ef\u8bbf\u95ee\u7684\u3002<samp>initialState<\/samp><samp>initialState<\/samp><samp>execute<\/samp><\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><a><\/a>\u6d4b\u8bd5 Batch Apex<\/h2>\n\n\n\n<p><a><\/a>\u5728\u6d4b\u8bd5\u6279\u5904\u7406 Apex \u65f6\uff0c\u60a8\u53ef\u4ee5\u6d4b\u8bd5 \u8be5\u65b9\u6cd5\u4ec5\u6267\u884c\u4e00\u6b21\u3002\u4f7f\u7528\u8be5\u65b9\u6cd5\u7684\u53c2\u6570\u6765\u9650\u5236 \u4f20\u9012\u5230\u65b9\u6cd5\u4e2d\u7684\u8bb0\u5f55 \u4ee5\u786e\u4fdd\u60a8\u4e0d\u4f1a\u9047\u5230\u8c03\u63a7\u5668\u9650\u5236\u3002<samp>execute<\/samp><var>scope<\/var><samp>executeBatch<\/samp><samp>execute<\/samp><\/p>\n\n\n\n<p><a><\/a>\u8be5\u65b9\u6cd5\u542f\u52a8\u4e00\u4e2a\u5f02\u6b65\u8fdb\u7a0b\u3002\u6d4b\u8bd5\u65f6 \u6279\u5904\u7406 Apex\uff0c\u786e\u4fdd\u5f02\u6b65\u5904\u7406\u7684\u6279\u5904\u7406\u4f5c\u4e1a\u5df2\u5b8c\u6210 \u5728\u5bf9\u7167\u7ed3\u679c\u8fdb\u884c\u6d4b\u8bd5\u4e4b\u524d\u3002\u4f7f\u7528\u6d4b\u8bd5\u65b9\u6cd5\u548c\u65b9\u6cd5\uff0c\u786e\u4fdd\u5728\u7ee7\u7eed\u64cd\u4f5c\u4e4b\u524d\u5b8c\u6210 \u4f60\u7684\u6d4b\u8bd5\u3002<samp>executeBatch<\/samp><samp>startTest<\/samp><samp>stopTest<\/samp><samp>executeBatch<\/samp>\u7cfb\u7edf\u5c06\u6536\u96c6\u5728\u8be5\u65b9\u6cd5\u4e4b\u540e\u8fdb\u884c\u7684\u6240\u6709\u5f02\u6b65\u8c03\u7528\u3002 \u6267\u884c\u65f6\uff0c\u5168\u90e8\u5f02\u6b65 \u8fdb\u7a0b\u662f\u540c\u6b65\u8fd0\u884c\u7684\u3002\u5982\u679c\u672a\u5728 \u548c \u65b9\u6cd5\u4e2d\u5305\u542b\u8be5\u65b9\u6cd5\uff0c\u5219\u6279\u5904\u7406\u4f5c\u4e1a\u5c06\u5728\u6d4b\u8bd5\u7ed3\u675f\u65f6\u6267\u884c \u65b9\u6cd5\u3002\u6b64\u6267\u884c\u987a\u5e8f\u9002\u7528\u4e8e\u4f7f\u7528 API \u7248\u672c 25.0 \u4fdd\u5b58\u7684 Apex\uff0c\u5e76\u4e14 \u66f4\u9ad8\u7248\u672c\uff0c\u4f46\u4e0d\u9002\u7528\u4e8e\u65e9\u671f\u7248\u672c\u3002<samp>startTest<\/samp><samp>stopTest<\/samp><samp>executeBatch<\/samp><samp>startTest<\/samp><samp>stopTest<\/samp><\/p>\n\n\n\n<p><a><\/a>\u5bf9\u4e8e\u4f7f\u7528 API \u7248\u672c 22.0 \u53ca\u66f4\u9ad8\u7248\u672c\u4fdd\u5b58\u7684 Apex\uff0c \u5728\u6267\u884c\u6d4b\u8bd5\u8c03\u7528\u7684\u6279\u5904\u7406 Apex \u4f5c\u4e1a\u671f\u95f4\u53d1\u751f\u7684\u5f02\u5e38 \u65b9\u6cd5\u88ab\u4f20\u9012\u7ed9\u8c03\u7528\u6d4b\u8bd5\u65b9\u6cd5\u3002\u56e0\u6b64\uff0c\u8fd9\u4e9b\u5f02\u5e38 \u5bfc\u81f4\u6d4b\u8bd5\u65b9\u6cd5\u5931\u8d25\u3002\u5982\u679c\u8981\u5728\u6d4b\u8bd5\u4e2d\u5904\u7406\u5f02\u5e38 \u65b9\u6cd5\uff0c\u5c06\u4ee3\u7801\u62ec\u5728 AND \u8bed\u53e5\u4e2d\u3002\u5c06\u5757\u653e\u5728\u65b9\u6cd5\u4e4b\u540e\u3002\u4f46\u662f\uff0c\u4fdd\u5b58\u4e86 Apex \u4f7f\u7528 Apex \u7248\u672c 21.0 \u53ca\u66f4\u65e9\u7248\u672c\uff0c\u6b64\u7c7b\u5f02\u5e38\u4e0d\u4f1a\u4f20\u9012\u7ed9 \u6d4b\u8bd5\u65b9\u6cd5\uff0c\u5e76\u4e14\u4e0d\u4f1a\u5bfc\u81f4\u6d4b\u8bd5\u65b9\u6cd5\u5931\u8d25\u3002<samp>try<\/samp><samp>catch<\/samp><samp>catch<\/samp><samp>stopTest<\/samp><\/p>\n\n\n\n<p>\u6ce8\u610f<\/p>\n\n\n\n<p>\u5f02\u6b65\u8c03\u7528\uff0c \u4f8b\u5982 \u6216 \uff0c\u5728 \u3001 \u5757\u4e2d\u8c03\u7528\uff0c\u5219\u4e0d\u8ba1\u5165 \u6392\u961f\u7684\u4f5c\u4e1a\u3002<samp>@futureexecuteBatchstartTeststopTest<\/samp>\u4e0b\u9762\u7684\u793a\u4f8b\u6d4b\u8bd5\u00a0<samp>OwnerReassignment<\/samp>\u00a0\u7c7b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public static testMethod void testBatch() {\n   user u = &#91;SELECT ID, UserName FROM User \n             WHERE username='testuser1@acme.com'];\n   user u2 = &#91;SELECT ID, UserName FROM User \n              WHERE username='testuser2@acme.com'];\n   String u2id = u2.id;\n\/\/ Create 200 test accounts - this simulates one execute.  \n\/\/ Important - the Salesforce test framework only allows you to \n\/\/ test one execute.  \n\n   List &lt;Account&gt; accns = new List&lt;Account&gt;();\n      for(integer i = 0; i&lt;200; i++){\n         Account a = new Account(Name='testAccount'+ i, \n                     Ownerid = u.ID); \n         accns.add(a);\n      }\n   \n   insert accns;\n   \n   Test.StartTest();\n   OwnerReassignment reassign = new OwnerReassignment();\n   reassign.query='SELECT ID, Name, Ownerid ' +\n            'FROM Account ' +\n            'WHERE OwnerId=\\'' + u.Id + '\\'' +\n            ' LIMIT 200';\n   reassign.email='admin@acme.com';\n   reassign.fromUserId = u.Id;\n   reassign.toUserId = u2.Id;\n   ID batchprocessid = Database.executeBatch(reassign);\n   Test.StopTest();\n\n   System.AssertEquals(\n           database.countquery('SELECT COUNT()'\n              +' FROM Account WHERE OwnerId=\\'' + u2.Id + '\\''),\n           200);  \n   \n   }\n}<\/code><\/pre>\n\n\n\n<p>\u4f7f\u7528 \u548c \u65b9\u6cd5\u6267\u884c\u4ee5\u4e0b\u64cd\u4f5c \u5728\u6d4b\u8bd5\u4e0a\u4e0b\u6587\u4e2d\u5bf9\u65e0\u64cd\u4f5c\u4f5c\u4e1a\u8fdb\u884c\u6392\u961f\u548c\u91cd\u65b0\u6392\u5e8f\u3002<samp>System.Test.enqueueBatchJobs<\/samp><samp>System.Test.getFlexQueueOrder<\/samp><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Batch Apex \u9650\u5236<\/h2>\n\n\n\n<p>\u8bf7\u8bb0\u4f4f\u4ee5\u4e0b\u8c03\u901f\u5668\u9650\u5236\u548c\u5176\u4ed6\u9650\u5236 \u7528\u4e8e\u6279\u5904\u7406 Apex\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u6700\u591a\u53ef\u4ee5\u540c\u65f6\u6392\u961f\u6216\u6d3b\u52a8 5 \u4e2a\u6279\u5904\u7406\u4f5c\u4e1a\u3002<\/li>\n\n\n\n<li>\u6700\u591a\u53ef\u4ee5\u6709 100 \u4e2a\u6279\u5904\u7406\u4f5c\u4e1a \u4fdd\u5b58\u5728 Apex flex \u961f\u5217\u4e2d\u3002<samp>Holding<\/samp><\/li>\n\n\n\n<li>\u5728\u8fd0\u884c\u6d4b\u8bd5\u4e2d\uff0c\u60a8\u6700\u591a\u53ef\u4ee5\u63d0\u4ea4 5 \u4e2a\u6279\u5904\u7406\u4f5c\u4e1a\u3002<\/li>\n\n\n\n<li>\u6bcf 24 \u5c0f\u65f6\u671f\u95f4\u6279\u91cf\u6267\u884c Apex \u65b9\u6cd5\u7684\u6700\u5927\u6b21\u6570\u4e3a 250,000\uff0c\u6216\u7ec4\u7ec7\u4e2d\u7684\u7528\u6237\u8bb8\u53ef\u8bc1\u6570\u91cf\u4e58\u4ee5 200 &#8211; \u4ee5\u8f83\u5927\u8005\u4e3a\u51c6\u3002\u65b9\u6cd5\u6267\u884c\u5305\u62ec \u3001 \u548c \u65b9\u6cd5\u7684\u6267\u884c\u3002\u6b64\u9650\u5236\u9002\u7528\u4e8e\u60a8\u7684 \u6574\u4e2a\u7ec4\u7ec7\uff0c\u5e76\u4e0e\u6240\u6709\u5f02\u6b65 Apex \u5171\u4eab\uff1aBatch Apex\u3001Queueable Apex\u3001\u8ba1\u5212\u7684 Apex \u548c\u672a\u6765\u7684\u65b9\u6cd5\u3002\u68c0\u67e5\u6709\u591a\u5c11\u4e2a\u5f02\u6b65 Apex \u6267\u884c\u53ef\u7528\uff0c\u5411 REST API \u8d44\u6e90\u53d1\u51fa\u8bf7\u6c42\u3002\u8bf7\u53c2\u9605\u00a0REST API \u5f00\u53d1\u4eba\u5458\u6307\u5357\u4e2d\u7684\u5217\u51fa\u7ec4\u7ec7\u9650\u5236\u3002\u8bb8\u53ef\u8bc1 \u8ba1\u5165\u6b64\u9650\u5236\u7684\u7c7b\u578b\u5305\u62ec\u5b8c\u6574\u7684 Salesforce \u548c Salesforce \u5e73\u53f0\u7528\u6237\u8bb8\u53ef\u8bc1\u3001\u5e94\u7528\u7a0b\u5e8f\u8ba2\u9605\u7528\u6237\u8bb8\u53ef\u8bc1\u3001\u4ec5\u9650 Chatter \u7528\u6237\u3001 \u6807\u8bc6\u7528\u6237\u548c\u516c\u53f8\u793e\u533a\u7528\u6237\u3002<samp>startexecutefinishlimits<\/samp><\/li>\n\n\n\n<li>\u6700\u591a<a><\/a>5000\u4e07\u8bb0\u5f55\u53ef\u4ee5\u662f \u5728\u5bf9\u8c61\u4e2d\u8fd4\u56de\u3002\u5982\u679c\u8d85\u8fc7 5000 \u4e07\u6761\u8bb0\u5f55 \u8fd4\u56de\uff0c\u6279\u5904\u7406\u4f5c\u4e1a\u5c06\u7acb\u5373\u7ec8\u6b62\u5e76\u6807\u8bb0\u4e3a \u5931\u8d25\u3002<samp>Database.QueryLocator<\/samp><\/li>\n\n\n\n<li><a><\/a>\u5982\u679c\u6279\u5904\u7406\u7c7b\u7684\u65b9\u6cd5\u8fd4\u56de QueryLocator\uff0c \u53ef\u9009\u8303\u56f4\u53c2\u6570\u7684\u6700\u5927\u503c\u4e3a<samp>start<\/samp><samp>Database.executeBatch<\/samp><a><\/a>2,000.\u5982\u679c\u8bbe\u7f6e\u4e3a\u66f4\u9ad8\u7684\u503c\uff0c\u5219 Salesforce \u5c06 QueryLocator \u8fd4\u56de\u7684\u8bb0\u5f55\u5206\u5757\u4e3a\u66f4\u5c0f\u7684\u6279\u6b21 \u6700\u591a 2,000 \u6761\u8bb0\u5f55\u3002\u5982\u679c\u6279\u5904\u7406\u7684\u65b9\u6cd5 \u7c7b\u8fd4\u56de\u4e00\u4e2a\u53ef\u8fed\u4ee3\u5bf9\u8c61\uff0cscope \u53c2\u6570\u503c\u6ca1\u6709\u4e0a\u9650\u3002 \u4f46\u662f\uff0c\u5982\u679c\u4f7f\u7528\u8f83\u9ad8\u7684\u6570\u5b57\uff0c\u5219\u53ef\u80fd\u4f1a\u9047\u5230\u5176\u4ed6\u9650\u5236\u3002\u8fd9 \u6700\u4f73\u793a\u6ce2\u5668\u5927\u5c0f\u662f 2000 \u7684\u7cfb\u6570\uff0c\u4f8b\u5982 100\u3001200\u3001400 \u548c \u7b49\u7b49\u3002<samp>start<\/samp><\/li>\n\n\n\n<li>\u5982\u679c\u672a\u4f7f\u7528\u53ef\u9009\u53c2\u6570\u6307\u5b9a\u5927\u5c0f \u4e4b Salesforce \u5c06\u8be5\u65b9\u6cd5\u8fd4\u56de\u7684\u8bb0\u5f55\u5206\u5757\u4e3a<var>scope<\/var><samp>Database.executeBatch<\/samp><samp>start<\/samp><a><\/a>200\u8bb0\u5f55\u3002\u7136\u540e\uff0c\u7cfb\u7edf\u5c06\u6bcf\u4e2a\u6279\u6b21\u4f20\u9012\u7ed9\u8be5\u65b9\u6cd5\u3002Apex \u8c03\u901f\u5668\u9650\u5236 \u5728\u6bcf\u6b21\u6267\u884c \u65f6\u91cd\u7f6e\u3002<samp>execute<\/samp><samp>execute<\/samp><\/li>\n\n\n\n<li>\u3001 \u548c \u65b9\u6cd5\u6700\u591a\u53ef\u4ee5\u5b9e\u73b0 100 \u4e2a \u6bcf\u4e2a\u6807\u6ce8\u3002<samp>start<\/samp><samp>execute<\/samp><samp>finish<\/samp><\/li>\n\n\n\n<li>\u4e00\u4e2a\u7ec4\u7ec7\u4e2d\u4e00\u6b21\u53ea\u80fd\u8fd0\u884c\u4e00\u4e2a\u6279\u5904\u7406 Apex \u4f5c\u4e1a\u7684\u65b9\u6cd5\u3002\u5c1a\u672a\u542f\u52a8\u7684\u6279\u5904\u7406\u4f5c\u4e1a \u4f46\u4ecd\u4fdd\u7559\u5728\u961f\u5217\u4e2d\uff0c\u76f4\u5230\u5b83\u4eec\u5f00\u59cb\u3002\u6b64\u9650\u5236\u4e0d \u5bfc\u81f4\u4efb\u4f55\u6279\u5904\u7406\u4f5c\u4e1a\u5931\u8d25\uff0c\u5e76\u4e14\u6279\u5904\u7406 Apex \u4f5c\u4e1a\u7684\u65b9\u6cd5\u4ecd\u5e76\u884c\u8fd0\u884c\uff0c\u5982\u679c \u591a\u4e2a\u4f5c\u4e1a\u6b63\u5728\u8fd0\u884c\u3002<samp>start<\/samp><samp>execute<\/samp><\/li>\n\n\n\n<li>\u5728 SOQL \u67e5\u8be2\u4e2d\u4f7f\u7528 \u66f4\u65b0\u671f\u95f4\u7684\u9501\u5b9a\u8bb0\u5f55\u4e0d\u9002\u7528\u4e8e Batch Apex\u3002<samp>FOR UPDATE<\/samp><\/li>\n\n\n\n<li>\u6e38\u6807\u548c\u76f8\u5173\u67e5\u8be2\u7ed3\u679c\u7684\u6709\u6548\u671f\u4e3a 2 \u5929\uff0c\u5305\u62ec \u5bfc\u81f4\u5d4c\u5957\u67e5\u8be2\u3002\u6709\u5173\u66f4\u591a\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605\u00a0API \u67e5\u8be2\u6e38\u6807\u9650\u5236\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\"><a><\/a>Batch Apex \u6700\u4f73\u5b9e\u8df5<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u8ba1\u5212\u4ece\u89e6\u53d1\u5668\u8c03\u7528\u6279\u5904\u7406\u4f5c\u4e1a\uff0c\u8bf7\u683c\u5916\u5c0f\u5fc3\u3002\u4f60 \u5fc5\u987b\u80fd\u591f\u4fdd\u8bc1\u89e6\u53d1\u5668\u6dfb\u52a0\u7684\u6279\u5904\u7406\u4f5c\u4e1a\u4e0d\u4f1a\u8d85\u8fc7 \u9650\u5236\u3002\u5177\u4f53\u800c\u8a00\uff0c\u8bf7\u8003\u8651 API \u6279\u91cf\u66f4\u65b0\u3001\u5bfc\u5165\u5411\u5bfc\u3001\u6279\u91cf\u8bb0\u5f55 \u901a\u8fc7\u7528\u6237\u754c\u9762\u8fdb\u884c\u66f4\u6539\uff0c\u4ee5\u53ca\u591a\u4e2a\u8bb0\u5f55\u53ef\u4ee5\u66f4\u6539\u7684\u6240\u6709\u60c5\u51b5 \u4e00\u6b21\u66f4\u65b0\u3002<\/li>\n\n\n\n<li>\u5f53\u60a8\u8c03\u7528 \uff0c Salesforce \u4ec5\u5c06\u4f5c\u4e1a\u653e\u5165\u961f\u5217\u4e2d\u3002\u5b9e\u9645\u6267\u884c\u53ef\u80fd\u4f1a\u5ef6\u8fdf \u57fa\u4e8e\u670d\u52a1\u53ef\u7528\u6027\u3002<samp>Database.executeBatch<\/samp><\/li>\n\n\n\n<li>\u6d4b\u8bd5\u6279\u5904\u7406 Apex \u65f6\uff0c\u53ea\u80fd\u6d4b\u8bd5\u8be5\u65b9\u6cd5\u7684\u4e00\u6b21\u6267\u884c\u3002\u4f7f\u7528\u65b9\u6cd5\u7684\u53c2\u6570\u6765\u9650\u5236\u4f20\u5165\u8be5\u65b9\u6cd5\u7684\u8bb0\u5f55\u6570\uff0c\u4ee5\u786e\u4fdd \u6ca1\u6709\u9047\u5230\u8c03\u901f\u5668\u9650\u5236\u3002<samp>execute<\/samp><var>scope<\/var><samp>executeBatch<\/samp><samp>execute<\/samp><\/li>\n\n\n\n<li>\u8be5\u65b9\u6cd5\u542f\u52a8\u4e00\u4e2a \u5f02\u6b65\u8fdb\u7a0b\u3002\u6d4b\u8bd5\u6279\u5904\u7406 Apex \u65f6\uff0c\u8bf7\u786e\u4fdd \u5f02\u6b65\u5904\u7406\u7684\u6279\u5904\u7406\u4f5c\u4e1a\u5728\u9488\u5bf9 \u7ed3\u679c\u3002\u4f7f\u7528 Test \u65b9\u6cd5\u548c\u56f4\u7ed5\u8be5\u65b9\u6cd5\u786e\u4fdd\u5b83 \u5728\u7ee7\u7eed\u6d4b\u8bd5\u4e4b\u524d\u5b8c\u6210\u3002<samp>executeBatch<\/samp><samp>startTest<\/samp><samp>stopTest<\/samp><samp>executeBatch<\/samp><\/li>\n\n\n\n<li>\u4e0e\u7c7b\u4e00\u8d77\u4f7f\u7528 \u5982\u679c\u8981\u5728\u4f5c\u4e1a\u4e4b\u95f4\u5171\u4eab\u5b9e\u4f8b\u6210\u5458\u53d8\u91cf\u6216\u6570\u636e\uff0c\u8bf7\u8fdb\u884c\u5b9a\u4e49 \u4ea4\u6613\u3002\u5426\u5219\uff0c\u6240\u6709\u6210\u5458\u53d8\u91cf\u90fd\u5c06\u91cd\u7f6e\u4e3a\u5176\u521d\u59cb\u72b6\u6001 \u5728\u6bcf\u7b14\u4ea4\u6613\u5f00\u59cb\u65f6\u3002<samp>Database.Stateful<\/samp><\/li>\n\n\n\n<li>\u58f0\u660e\u4e3a not \u7684\u65b9\u6cd5 \u5728\u5b9e\u73b0\u63a5\u53e3\u7684\u7c7b\u4e2d\u5141\u8bb8\u3002<samp>future<\/samp><samp>Database.Batchable<\/samp><\/li>\n\n\n\n<li>\u58f0\u660e\u4e3a can&#8217;t be \u7684\u65b9\u6cd5 \u4ece\u6279\u5904\u7406 Apex \u7c7b\u8c03\u7528\u3002<samp>future<\/samp><\/li>\n\n\n\n<li>\u8fd0\u884c\u6279\u5904\u7406 Apex \u4f5c\u4e1a\u65f6\uff0c\u5c06\u5411\u4ee5\u4e0b\u7528\u6237\u53d1\u9001\u7535\u5b50\u90ae\u4ef6\u901a\u77e5\uff1a \u63d0\u4ea4\u4e86\u6279\u5904\u7406\u4f5c\u4e1a\u3002\u5982\u679c\u4ee3\u7801\u5305\u542b\u5728\u6258\u7ba1\u5305\u4e2d\uff0c\u5e76\u4e14 \u8ba2\u9605\u7ec4\u7ec7\u6b63\u5728\u8fd0\u884c\u6279\u5904\u7406\u4f5c\u4e1a\uff0c\u901a\u77e5\u5c06\u53d1\u9001\u5230&nbsp;Apex \u5f02\u5e38\u901a\u77e5\u4e2d\u5217\u51fa\u7684\u6536\u4ef6\u4eba \u6536\u4ef6\u4eba\u5b57\u6bb5\u3002<\/li>\n\n\n\n<li>\u6bcf\u4e2a\u65b9\u6cd5\u6267\u884c\u90fd\u4f7f\u7528\u6807\u51c6\u7684 governor limits \u533f\u540d\u5757\uff0c Visualforce \u63a7\u5236\u5668\u6216 WSDL \u65b9\u6cd5\u3002<\/li>\n\n\n\n<li>\u6bcf\u4e2a\u6279\u5904\u7406 Apex \u8c03\u7528\u90fd\u4f1a\u521b\u5efa\u4e00\u6761\u8bb0\u5f55\u3002\u6784\u9020 SOQL \u67e5\u8be2\u4ee5\u68c0\u7d22 \u4f5c\u4e1a\u7684\u72b6\u6001\u3001\u9519\u8bef\u6570\u3001\u8fdb\u5ea6\u548c\u63d0\u4ea4\u8005\uff0c\u8bf7\u4f7f\u7528\u8bb0\u5f55\u7684 ID\u3002<samp>AsyncApexJobAsyncApexJob<\/samp>\u6709\u5173\u8be5\u5bf9\u8c61\u7684\u8be6\u7ec6\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605\u00a0Salesforce \u5bf9\u8c61\u53c2\u8003\u4e2d\u7684\u00a0AsyncApexJob\u3002<samp>AsyncApexJob<\/samp><\/li>\n\n\n\n<li>\u5bf9\u4e8e\u6bcf 10,000 \u6761\u8bb0\u5f55\uff0c Apex \u521b\u5efa\u8bb0\u5f55 \u4f9b\u5185\u90e8\u4f7f\u7528\u7684\u7c7b\u578b\u3002 \u67e5\u8be2\u6240\u6709\u8bb0\u5f55\u65f6\uff0c\u5efa\u8bae\u4f7f\u7528\u8be5\u5b57\u6bb5\u7b5b\u9009\u51fa\u7c7b\u578b\u7684\u8bb0\u5f55\u3002\u5426\u5219\uff0c\u67e5\u8be2\u5c06\u8fd4\u56de \u6bcf 10,000 \u6761\u8bb0\u5f55\u591a\u4e00\u6761\u8bb0\u5f55\u3002\u6709\u5173\u8be5\u5bf9\u8c61\u7684\u8be6\u7ec6\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605\u00a0Salesforce \u5bf9\u8c61\u53c2\u8003\u4e2d\u7684\u00a0AsyncApexJob\u3002<samp>AsyncApexJobAsyncApexJobBatchApexWorkerAsyncApexJobBatchApexWorkerJobTypeAsyncApexJobAsyncApexJob<\/samp><\/li>\n\n\n\n<li>\u6240\u6709\u5b9e\u73b0\u7684\u63a5\u53e3\u65b9\u6cd5\u90fd\u5fc5\u987b\u5b9a\u4e49\u4e3a \u6216 \u3002<samp>Database.Batchable<\/samp><samp>public<\/samp><samp>global<\/samp><\/li>\n\n\n\n<li>\u5bf9\u4e8e\u5171\u4eab\u91cd\u65b0\u8ba1\u7b97\uff0c\u5efa\u8bae\u65b9\u6cd5\u5220\u9664\uff0c\u7136\u540e\u91cd\u65b0\u521b\u5efa \u6279\u5904\u7406\u4e2d\u8bb0\u5f55\u7684\u6240\u6709 Apex \u6258\u7ba1\u5171\u4eab\u3002\u6b64\u8fc7\u7a0b\u53ef\u786e\u4fdd \u5171\u4eab\u51c6\u786e\u5b8c\u6574\u3002<samp>execute<\/samp><\/li>\n\n\n\n<li>\u5728 Salesforce \u670d\u52a1\u7ef4\u62a4\u505c\u673a\u4e4b\u524d\u6392\u961f\u7684\u6279\u5904\u7406\u4f5c\u4e1a\u4ecd\u4fdd\u7559\u5728 \u961f\u5217\u3002\u670d\u52a1\u505c\u673a\u7ed3\u675f\u540e\uff0c\u5f53\u7cfb\u7edf\u8d44\u6e90\u53ef\u7528\u65f6\uff0c \u5c06\u6267\u884c\u6392\u961f\u7684\u6279\u5904\u7406\u4f5c\u4e1a\u3002\u5982\u679c\u6279\u5904\u7406\u4f5c\u4e1a\u5728\u505c\u673a\u65f6\u6b63\u5728\u8fd0\u884c \u53d1\u751f\u65f6\uff0c\u6279\u5904\u7406\u6267\u884c\u5c06\u5728\u670d\u52a1\u540e\u56de\u6eda\u5e76\u91cd\u65b0\u542f\u52a8 \u56de\u6765\u4e86\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u53ef\u80fd\uff0c\u8bf7\u5c3d\u91cf\u51cf\u5c11\u6279\u6b21\u6570\u3002Salesforce \u4f7f\u7528\u57fa\u4e8e\u961f\u5217\u7684 \u7528\u4e8e\u5904\u7406\u6765\u81ea\u672a\u6765\u65b9\u6cd5\u7b49\u6765\u6e90\u7684\u5f02\u6b65\u8fc7\u7a0b\u7684\u6846\u67b6 \u548c\u6279\u5904\u7406 Apex\u3002\u6b64\u961f\u5217\u7528\u4e8e\u5e73\u8861\u8de8 \u7ec4\u7ec7\u3002\u5982\u679c\u8d85\u8fc7 2,000 \u4e2a\u672a\u5904\u7406\u7684\u8bf7\u6c42\u6765\u81ea\u5355\u4e2a \u7ec4\u7ec7\u5728\u961f\u5217\u4e2d\uff0c\u6765\u81ea\u540c\u4e00\u7684\u4efb\u4f55\u5176\u4ed6\u8bf7\u6c42 \u5f53\u961f\u5217\u5904\u7406\u6765\u81ea\u5176\u4ed6\u7ec4\u7ec7\u7684\u8bf7\u6c42\u65f6\uff0c\u7ec4\u7ec7\u5c06\u88ab\u5ef6\u8fdf \u7ec4\u7ec7\u3002<\/li>\n\n\n\n<li>\u786e\u4fdd\u6279\u5904\u7406\u4f5c\u4e1a\u5c3d\u53ef\u80fd\u5feb\u5730\u6267\u884c\u3002\u4e3a\u786e\u4fdd\u5feb\u901f\u6267\u884c \u6279\u5904\u7406\u4f5c\u4e1a\uff0c\u6700\u5927\u9650\u5ea6\u5730\u51cf\u5c11 Web \u670d\u52a1\u6807\u6ce8\u65f6\u95f4\uff0c\u5e76\u4f18\u5316 \u6279\u5904\u7406 Apex \u4ee3\u7801\u3002\u6279\u5904\u7406\u4f5c\u4e1a\u6267\u884c\u7684\u65f6\u95f4\u8d8a\u957f\uff0c\u5176\u4ed6\u6392\u961f\u7684\u53ef\u80fd\u6027\u5c31\u8d8a\u5927 \u5f53\u961f\u5217\u4e2d\u6709\u8bb8\u591a\u4f5c\u4e1a\u65f6\uff0c\u4f5c\u4e1a\u4f1a\u5ef6\u8fdf\u3002<\/li>\n\n\n\n<li>\u5982\u679c\u5c06\u6279\u5904\u7406 Apex \u4e0e\u901a\u8fc7 OData \u8bbf\u95ee\u5916\u90e8\u5bf9\u8c61 Salesforce Connect \u9002\u914d\u5668\uff1a<samp>Database.QueryLocator<\/samp>\n<ul class=\"wp-block-list\">\n<li>\u5728\u5916\u90e8\u6570\u636e\u6e90\u4e0a\u542f\u7528\u8bf7\u6c42\u884c\u8ba1\u6570\uff0c\u5e76\u4e14\u6bcf\u4e2a \u6765\u81ea\u5916\u90e8\u7cfb\u7edf\u7684\u54cd\u5e94\u5fc5\u987b\u5305\u62ec\u603b\u884c\u6570 \u7684\u7ed3\u679c\u96c6\u3002<\/li>\n\n\n\n<li>\u5efa\u8bae\u5728\u5916\u90e8\u6570\u636e\u4e0a\u542f\u7528\u670d\u52a1\u5668\u9a71\u52a8\u7684\u5206\u9875 \u6e90\u5e76\u8ba9\u5916\u90e8\u7cfb\u7edf\u786e\u5b9a\u9875\u9762\u5927\u5c0f\u548c\u6279\u6b21 \u5927\u578b\u7ed3\u679c\u96c6\u7684\u8fb9\u754c\u3002\u901a\u5e38\uff0c\u670d\u52a1\u5668\u9a71\u52a8\u7684\u5206\u9875 \u53ef\u4ee5\u8c03\u6574\u6279\u6b21\u8fb9\u754c\u4ee5\u9002\u5e94\u4e0d\u65ad\u53d8\u5316\u7684\u6570\u636e\u96c6 \u6bd4\u5ba2\u6237\u7aef\u9a71\u52a8\u7684\u5bfb\u547c\u66f4\u6709\u6548\u3002\u5f53\u670d\u52a1\u5668\u9a71\u52a8\u65f6 \u5728\u5916\u90e8\u6570\u636e\u6e90 OData \u4e0a\u7981\u7528\u5206\u9875 \u9002\u914d\u5668\u63a7\u5236\u5206\u9875\u884c\u4e3a\uff08\u5ba2\u6237\u7aef\u9a71\u52a8\uff09\u3002\u5982\u679c \u5916\u90e8\u5bf9\u8c61\u8bb0\u5f55\u88ab\u6dfb\u52a0\u5230\u5916\u90e8\u7cfb\u7edf\uff0c\u800c \u4f5c\u4e1a\u8fd0\u884c\uff0c\u5176\u4ed6\u8bb0\u5f55\u53ef\u4ee5\u5904\u7406\u4e24\u6b21\u3002\u5982\u679c\u5916\u90e8 \u5728\u6267\u884c\u4f5c\u4e1a\u65f6\uff0c\u5c06\u4ece\u5916\u90e8\u7cfb\u7edf\u4e2d\u5220\u9664\u5bf9\u8c61\u8bb0\u5f55 \u8fd0\u884c\uff0c\u53ef\u4ee5\u8df3\u8fc7\u5176\u4ed6\u8bb0\u5f55\u3002<\/li>\n\n\n\n<li>\u5728\u5916\u90e8\u6570\u636e\u4e0a\u542f\u7528\u670d\u52a1\u5668\u9a71\u52a8\u5206\u9875\u65f6 source\uff0c\u8fd0\u884c\u65f6\u7684\u6279\u5904\u7406\u5927\u5c0f\u4e3a\u4ee5\u4e0b\u8f83\u5c0f\u503c\uff1a\n<ul class=\"wp-block-list\">\n<li>\u53c2\u6570\u4e2d\u6307\u5b9a\u7684\u6279\u5927\u5c0f\u3002 \u9ed8\u8ba4\u503c\u4e3a 200 \u6761\u8bb0\u5f55\u3002<samp>scope<\/samp><samp>Database.executeBatch<\/samp><\/li>\n\n\n\n<li>\u5916\u90e8\u7cfb\u7edf\u8fd4\u56de\u7684\u9875\u9762\u5927\u5c0f\u3002\u6211\u4eec\u5efa\u8bae \u5c06\u5916\u90e8\u7cfb\u7edf\u8bbe\u7f6e\u4e3a\u8fd4\u56de 200 \u7684\u9875\u9762\u5927\u5c0f \u6216\u66f4\u5c11\u7684\u8bb0\u5f55\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/li>\n\n\n\n<li>\u5f53\u65b9\u6cd5\u901a\u8fc7 \u5b50\u67e5\u8be2\u3002\u907f\u514d\u5728 a \u4e2d\u51fa\u73b0\u5173\u7cfb\u5b50\u67e5\u8be2\u5141\u8bb8\u6279\u5904\u7406\u4f5c\u4e1a\u4f7f\u7528\u66f4\u5feb\u7684\u5206\u5757 \u5b9e\u73b0\u3002\u5982\u679c\u65b9\u6cd5 \u8fd4\u56de\u4e00\u4e2a\u53ef\u8fed\u4ee3\u5bf9\u8c61\u6216\u4e00\u4e2a\u5177\u6709\u5173\u7cfb\u5b50\u67e5\u8be2\u7684\u5bf9\u8c61\uff0c\u6279\u5904\u7406\u4f5c\u4e1a\u4f7f\u7528\u8f83\u6162\u7684\u975e\u5206\u5757\uff0c \u5b9e\u73b0\u3002\u4f8b\u5982\uff0c\u5982\u679c\u5728 \u4e2d\u4f7f\u7528\u4ee5\u4e0b\u67e5\u8be2\uff0c\u5219\u6279\u5904\u7406\u4f5c\u4e1a\u4f7f\u7528\u8f83\u6162\u7684 \u7531\u4e8e\u5173\u7cfb\u5b50\u67e5\u8be2\u800c\u5b9e\u73b0\uff1a<samp>start<\/samp><samp>QueryLocator<\/samp><samp>QueryLocator<\/samp><samp>start<\/samp><samp>QueryLocator<\/samp><samp>QueryLocator<\/samp><code>SELECT Id, (SELECT id FROM Contacts) FROM Account<\/code>\u66f4\u597d\u7684\u7b56\u7565\u662f\u4ece\u6267\u884c\u4e2d\u5355\u72ec\u6267\u884c\u5b50\u67e5\u8be2 \u65b9\u6cd5\uff0c\u5141\u8bb8\u6279\u5904\u7406\u4f5c\u4e1a\u4f7f\u7528\u66f4\u5feb\u7684\u5206\u5757\u8fd0\u884c \u5b9e\u73b0\u3002<\/li>\n\n\n\n<li>\u82e5\u8981\u5728\u6279\u5904\u7406\u4f5c\u4e1a\u4e2d\u5b9e\u73b0\u8bb0\u5f55\u9501\u5b9a\uff0c\u53ef\u4ee5\u91cd\u65b0\u67e5\u8be2\u8bb0\u5f55 \u5728 execute\uff08\uff09 \u65b9\u6cd5\u4e2d\uff0c\u5982\u6709\u5fc5\u8981\uff0c\u8bf7\u4f7f\u7528 FOR UPDATE\u3002\u8fd9\u786e\u4fdd\u4e86 \u6279\u5904\u7406\u4f5c\u4e1a\u4e2d\u7684 DML \u4e0d\u4f1a\u8986\u76d6\u4efb\u4f55\u51b2\u7a81\u7684\u66f4\u65b0\u3002\u91cd\u65b0\u67e5\u8be2 \u8bb0\u5f55\uff0c\u53ea\u9700\u5728\u6279\u5904\u7406\u4f5c\u4e1a\u7684\u4e3b\u67e5\u8be2\u5b9a\u4f4d\u7b26\u4e2d\u9009\u62e9 Id \u5b57\u6bb5\u5373\u53ef\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u94fe\u63a5\u6279\u5904\u7406\u4f5c\u4e1a<\/h2>\n\n\n\n<p>\u4ece API \u7248\u672c 26.0 \u5f00\u59cb\uff0c\u60a8\u53ef\u4ee5\u4ece\u73b0\u6709\u7684 \u6279\u5904\u7406\u4f5c\u4e1a\uff0c\u5c06\u4f5c\u4e1a\u94fe\u63a5\u5728\u4e00\u8d77\u3002\u94fe\u63a5\u6279\u5904\u7406\u4f5c\u4e1a\u4ee5\u5728\u53e6\u4e00\u4e2a\u4f5c\u4e1a\u4e4b\u540e\u542f\u52a8\u4f5c\u4e1a \u5b8c\u6210\u4ee5\u53ca\u4f5c\u4e1a\u9700\u8981\u6279\u5904\u7406\u65f6\uff08\u4f8b\u5982\u5904\u7406\u5927\u578b\u65f6\uff09 \u6570\u636e\u91cf\u3002\u5426\u5219\uff0c\u5982\u679c\u4e0d\u9700\u8981\u6279\u5904\u7406\uff0c\u8bf7\u8003\u8651\u4f7f\u7528\u00a0Queueable Apex\u3002<\/p>\n\n\n\n<p>\u53ef\u4ee5\u901a\u8fc7\u8c03\u7528 \u6216 \u4ece\u5f53\u524d\u6279\u5904\u7406\u7c7b\u7684\u65b9\u6cd5\u94fe\u63a5\u6279\u5904\u7406\u4f5c\u4e1a\u3002\u65b0\u7684\u6279\u5904\u7406\u4f5c\u4e1a\u5c06\u5f00\u59cb \u5f53\u524d\u6279\u5904\u7406\u4f5c\u4e1a\u5b8c\u6210\u540e\u3002<samp>Database.executeBatch<\/samp><samp>System.scheduleBatch<\/samp><samp>finish<\/samp><\/p>\n\n\n\n<p>\u5bf9\u4e8e\u4ee5\u524d\u7684 API \u7248\u672c\uff0c\u60a8\u65e0\u6cd5\u4ece\u4efb\u4f55\u6279\u5904\u7406 Apex \u65b9\u6cd5\u8c03\u7528\u6216\u8c03\u7528\u3002\u7684\u7248\u672c used \u662f\u6b63\u5728\u8fd0\u884c\u7684\u6279\u5904\u7406\u7c7b\u7684\u7248\u672c\uff0c\u8be5\u6279\u5904\u7406\u7c7b\u542f\u52a8\u6216\u8ba1\u5212\u53e6\u4e00\u4e2a \u6279\u5904\u7406\u4f5c\u4e1a\u3002\u5982\u679c \u8fd0\u884c Batch \u7c7b\u4f1a\u8c03\u7528\u5e2e\u52a9\u7a0b\u5e8f\u7c7b\u4e2d\u7684\u65b9\u6cd5\u4ee5\u542f\u52a8 Batch \u4f5c\u4e1a\uff0c\u5373 API \u5e2e\u52a9\u7a0b\u5e8f\u7c7b\u7684\u7248\u672c\u65e0\u5173\u7d27\u8981\u3002<samp>Database.executeBatch<\/samp><samp>System.scheduleBatch<\/samp><samp>finish<\/samp><\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u4ece Batch Apex \u89e6\u53d1\u5e73\u53f0\u4e8b\u4ef6<\/h1>\n\n\n\n<p><a><\/a>Batch Apex \u7c7b\u53ef\u4ee5\u5728\u4ee5\u4e0b\u60c5\u51b5\u4e0b\u89e6\u53d1\u5e73\u53f0\u4e8b\u4ef6 \u9047\u5230\u9519\u8bef\u6216\u5f02\u5e38\u3002\u4fa6\u542c\u4e8b\u4ef6\u7684\u5ba2\u6237\u7aef\u53ef\u4ee5\u83b7\u53d6\u53ef\u64cd\u4f5c\u7684 \u4fe1\u606f\uff0c\u4f8b\u5982\u4e8b\u4ef6\u5931\u8d25\u7684\u9891\u7387\u4ee5\u53ca\u54ea\u4e9b\u8bb0\u5f55\u5728 \u6545\u969c\u65f6\u95f4\u3002\u5bf9\u4e8eSalesforce Platform\u5185\u90e8\u9519\u8bef\u548c\u5176\u4ed6 \u65e0\u6cd5\u6355\u83b7\u7684 Apex \u5f02\u5e38\uff0c\u4f8b\u5982 LimitExceptions\uff0c\u8fd9\u4e9b\u5f02\u5e38\u662f\u7531 \u8c03\u901f\u5668\u9650\u5236\u3002<\/p>\n\n\n\n<p>\u4e8b\u4ef6\u6d88\u606f\u63d0\u4f9b\u6bd4 Apex Jobs UI \u66f4\u7cbe\u7ec6\u7684\u9519\u8bef\u8ddf\u8e2a\u3002\u5b83\u5305\u62ec \u6b63\u5728\u5904\u7406\u7684\u8bb0\u5f55 ID\u3001\u5f02\u5e38\u7c7b\u578b\u3001\u5f02\u5e38\u6d88\u606f\u548c\u5806\u6808\u8ddf\u8e2a\u3002\u4f60 \u8fd8\u53ef\u4ee5\u5408\u5e76\u81ea\u5b9a\u4e49\u5904\u7406\u548c\u5931\u8d25\u91cd\u8bd5\u903b\u8f91\u3002\u60a8\u53ef\u4ee5\u8c03\u7528\u81ea\u5b9a\u4e49 \u6765\u81ea\u6b64\u7c7b\u4e8b\u4ef6\u7684\u4efb\u4f55\u89e6\u53d1\u5668\u7684 Apex \u903b\u8f91\uff0c\u56e0\u6b64 Apex \u5f00\u53d1\u4eba\u5458\u53ef\u4ee5\u6784\u5efa \u81ea\u5b9a\u4e49\u65e5\u5fd7\u8bb0\u5f55\u6216\u81ea\u52a8\u91cd\u8bd5\u5904\u7406\u7b49\u529f\u80fd\u3002<\/p>\n\n\n\n<p>\u6709\u5173\u8ba2\u9605\u5e73\u53f0\u4e8b\u4ef6\u7684\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605\u8ba2\u9605\u5e73\u53f0\u4e8b\u4ef6\u3002<\/p>\n\n\n\n<p>BatchApexErrorEvent \u5bf9\u8c61\u8868\u793a\u4e0e\u6279\u5904\u7406 Apex \u5173\u8054\u7684\u5e73\u53f0\u4e8b\u4ef6 \u7c7b\u3002\u6b64\u5bf9\u8c61\u5728 API \u7248\u672c 44.0 \u53ca\u66f4\u9ad8\u7248\u672c\u4e2d\u53ef\u7528\u3002\u5982\u679c \u3001 \u6216 \u65b9\u6cd5 \u6279\u5904\u7406 Apex \u4f5c\u4e1a\u9047\u5230\u672a\u5904\u7406\u7684\u5f02\u5e38\uff0c\u5c06\u89e6\u53d1\u5e73\u53f0\u4e8b\u4ef6\u3002\u6709\u5173\u8be6\u7ec6\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605\u300a\u5e73\u53f0\u4e8b\u4ef6\u5f00\u53d1\u4eba\u5458\u6307\u5357\u300b\u4e2d\u7684\u00a0BatchApexErrorEvent\u3002<samp>startexecutefinishBatchApexErrorEvent<\/samp>\u8981\u89e6\u53d1\u5e73\u53f0\u4e8b\u4ef6\uff0c\u6279\u5904\u7406 Apex \u7c7b\u58f0\u660e\u5fc5\u987b\u5b9e\u73b0 Database.RaisesPlatformEvents \u63a5\u53e3\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public with sharing class YourSampleBatchJob implements Database.Batchable&lt;SObject&gt;, \n   Database.RaisesPlatformEvents{ \n   \/\/ class implementation \n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u4f8b<\/h2>\n\n\n\n<p>\u6b64\u793a\u4f8b\u521b\u5efa\u4e00\u4e2a\u89e6\u53d1\u5668\uff0c\u4ee5\u786e\u5b9a\u54ea\u4e9b\u5e10\u6237\u5728\u6279\u5904\u7406\u4e2d\u5931\u8d25 \u4ea4\u6613\u3002\u81ea\u5b9a\u4e49\u5b57\u6bb5 Dirty__c \u6307\u793a\u8be5\u5e10\u6237\u662f\u5931\u8d25\u6279\u6b21\u4e4b\u4e00 ExceptionType__c\u8868\u793a\u9047\u5230\u7684\u5f02\u5e38\u3002JobScope \u548c ExceptionType \u662f BatchApexErrorEvent \u4e2d\u7684\u5b57\u6bb5 \u5bf9\u8c61\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>trigger MarkDirtyIfFail on BatchApexErrorEvent (after insert) {\n    Set&lt;Id&gt; asyncApexJobIds = new Set&lt;Id&gt;();\n    for(BatchApexErrorEvent evt:Trigger.new){\n        asyncApexJobIds.add(evt.AsyncApexJobId);\n    }\n    \n    Map&lt;Id,AsyncApexJob&gt; jobs = new Map&lt;Id,AsyncApexJob&gt;(\n        &#91;SELECT id, ApexClass.Name FROM AsyncApexJob WHERE Id IN :asyncApexJobIds]\n    );\n    \n    List&lt;Account&gt; records = new List&lt;Account&gt;();\n    for(BatchApexErrorEvent evt:Trigger.new){\n        \/\/only handle events for the job(s) we care about\n        if(jobs.get(evt.AsyncApexJobId).ApexClass.Name == 'AccountUpdaterJob'){\n            for (String item : evt.JobScope.split(',')) {\n                Account a = new Account(\n                    Id = (Id)item,\n                    ExceptionType__c = evt.ExceptionType,\n                    Dirty__c = true\n                );\n                records.add(a);\n            }\n        }\n    }\n    update records;\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u6d4b\u8bd5\u4ece Batch Apex \u4f5c\u4e1a\u53d1\u5e03\u7684 BatchApexErrorEvent \u6d88\u606f<\/h2>\n\n\n\n<p>\u4f7f\u7528\u65b9\u6cd5 \u4ee5\u4f20\u9001\u7531\u5931\u8d25\u7684\u6279\u5904\u7406 Apex \u4f5c\u4e1a\u53d1\u5e03\u7684\u4e8b\u4ef6\u6d88\u606f\u3002\u4f7f\u7528 and \u8bed\u53e5\u5757\u6267\u884c \u6279\u5904\u7406\u4f5c\u4e1a\u3002<samp>Test.getEventBus().deliver()<\/samp><samp>Test.startTest()<\/samp><samp>Test.stopTest()<\/samp><\/p>\n\n\n\n<p>\u6b64\u4ee3\u7801\u7247\u6bb5\u6f14\u793a\u5982\u4f55\u6267\u884c\u6279\u5904\u7406 Apex \u4f5c\u4e1a\u5e76\u4f20\u9012\u4e8b\u4ef6\u6d88\u606f\u3002\u5b83 \u5728 \u4e4b\u540e\u6267\u884c\u6279\u5904\u7406\u4f5c\u4e1a\u3002\u6b64\u6279\u5904\u7406\u4f5c\u4e1a\u53d1\u5e03 BatchApexErrorEvent \u6d88\u606f \u5f53\u901a\u8fc7\u5b9e\u73b0 \u53d1\u751f\u6545\u969c\u65f6\u3002\u8fd0\u884c\u540e\uff0c\u5c06\u6dfb\u52a0\u4e00\u4e2a\u5355\u72ec\u7684\u8bed\u53e5\uff0c\u4ee5\u4fbf\u5b83\u53ef\u4ee5\u4f20\u9012 BatchApexErrorEvent\u3002<samp>Test.stopTest()<\/samp><samp>Database.RaisesPlatformEvents<\/samp><samp>Test.stopTest()<\/samp><samp>Test.getEventBus().deliver()<\/samp><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>try {\n    Test.startTest();\n    Database.executeBatch(new SampleBatchApex());\n    Test.stopTest();\n    \/\/ Batch Apex job executes here\n} catch(Exception e) {\n    \/\/ Catch any exceptions thrown in the batch job\n}\n\n\/\/ The batch job fires BatchApexErrorEvent if it fails, so deliver the event.\nTest.getEventBus().deliver();<\/code><\/pre>\n\n\n\n<p>\u6ce8\u610f<\/p>\n\n\n\n<p>\u5982\u679c\u4e0b\u6e38\u8fdb\u7a0b\u53d1\u5e03\u4e86\u8fdb\u4e00\u6b65\u7684\u5e73\u53f0\u4e8b\u4ef6\uff0c\u8bf7\u6dfb\u52a0\u4ee5\u4ea4\u4ed8 \u6bcf\u4e2a\u8fdb\u7a0b\u7684\u4e8b\u4ef6\u6d88\u606f\u3002\u4f8b\u5982\uff0c\u5982\u679c\u4e00\u4e2a\u5e73\u53f0\u4e8b\u4ef6\u89e6\u53d1\uff0c\u5219 \u5904\u7406\u6765\u81ea Apex \u4f5c\u4e1a\u7684\u4e8b\u4ef6\uff0c\u53d1\u5e03\u53e6\u4e00\u4e2a\u5e73\u53f0\u4e8b\u4ef6\uff0c\u6dfb\u52a0\u8bed\u53e5 \u4f20\u9012\u4e8b\u4ef6\u6d88\u606f\u3002<samp>Test.getEventBus().deliver();Test.getEventBus().deliver();<\/samp><\/p>\n\n\n\n<h1 class=\"wp-block-heading\">\u672a\u6765\u65b9\u6cd5<\/h1>\n\n\n\n<p>\u5c06\u6765\u7684\u65b9\u6cd5\u5728\u540e\u53f0\u5f02\u6b65\u8fd0\u884c\u3002\u60a8\u53ef\u4ee5\u8c03\u7528 future \u65b9\u6cd5 \u6267\u884c\u957f\u65f6\u95f4\u8fd0\u884c\u7684\u64cd\u4f5c\uff0c\u4f8b\u5982\u5bf9\u5916\u90e8 Web \u670d\u52a1\u6216\u4efb\u4f55 \u60a8\u5e0c\u671b\u5728\u81ea\u5df1\u7684\u7ebf\u7a0b\u4e2d\uff0c\u5728\u81ea\u5df1\u7684\u65f6\u95f4\u8fd0\u884c\u7684\u64cd\u4f5c\u3002\u60a8\u8fd8\u53ef\u4ee5\u4f7f\u7528 future \u5bf9\u4e0d\u540c sObject \u7c7b\u578b\u8fdb\u884c DML \u64cd\u4f5c\u9694\u79bb\u7684\u65b9\u6cd5\uff0c\u4ee5\u9632\u6b62\u6df7\u5408 DML \u9519\u8bef\u3002\u6bcf\u4e2a\u5c06\u6765\u7684\u65b9\u6cd5\u90fd\u6392\u961f\uff0c\u5e76\u5728\u7cfb\u7edf\u8d44\u6e90\u53ef\u7528\u65f6\u6267\u884c\u3002 \u8fd9\u6837\uff0c\u4ee3\u7801\u7684\u6267\u884c\u5c31\u4e0d\u5fc5\u7b49\u5f85 \u957f\u65f6\u95f4\u8fd0\u884c\u7684\u64cd\u4f5c\u3002\u4f7f\u7528\u672a\u6765\u65b9\u6cd5\u7684\u4e00\u4e2a\u597d\u5904\u662f\uff0c\u67d0\u4e9b\u8c03\u901f\u5668\u9650\u5236 \u66f4\u9ad8\uff0c\u4f8b\u5982 SOQL \u67e5\u8be2\u9650\u5236\u548c\u5806\u5927\u5c0f\u9650\u5236\u3002<\/p>\n\n\n\n<p>\u8981\u5b9a\u4e49\u5c06\u6765\u7684\u65b9\u6cd5\uff0c\u53ea\u9700\u4f7f\u7528\u6ce8\u91ca\u5bf9\u5176\u8fdb\u884c\u6ce8\u91ca\uff0c\u5982\u4e0b\u6240\u793a\u3002<samp>future<\/samp><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>global class FutureClass\n{\n    @future\n    public static void myFutureMethod()\n    {   \n         \/\/ Perform some operations\n    }\n}<\/code><\/pre>\n\n\n\n<p>\u5e26\u6709\u6ce8\u89e3\u7684\u65b9\u6cd5\u5fc5\u987b\u662f static \u65b9\u6cd5\uff0c\u5e76\u4e14\u53ea\u80fd\u8fd4\u56de void \u7c7b\u578b\u3002\u6307\u5b9a\u7684\u53c2\u6570\u5fc5\u987b\u662f \u57fa\u5143\u6570\u636e\u7c7b\u578b\u3001\u57fa\u5143\u6570\u636e\u7c7b\u578b\u7684\u6570\u7ec4\u6216\u57fa\u5143\u6570\u636e\u7684\u96c6\u5408 \u7c7b\u578b\u3002\u5e26\u6709\u6ce8\u89e3\u7684\u65b9\u6cd5\u4e0d\u80fd \u5c06 sObjects \u6216 objects \u4f5c\u4e3a\u53c2\u6570\u3002<samp>future<\/samp><samp>future<\/samp><\/p>\n\n\n\n<p>sObjects \u4e0d\u80fd\u4f5c\u4e3a\u53c2\u6570\u4f20\u9012\u7ed9\u672a\u6765\u65b9\u6cd5\u7684\u539f\u56e0\u662f sObject \u53ef\u4ee5\u5728\u8c03\u7528\u65b9\u6cd5\u7684\u65f6\u95f4\u548c\u6267\u884c\u65b9\u6cd5\u7684\u65f6\u95f4\u4e4b\u95f4\u66f4\u6539\u3002\u5728 \u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0cfuture \u65b9\u6cd5\u4f1a\u83b7\u53d6\u65e7\u7684 sObject \u503c\u5e76\u53ef\u4ee5\u8986\u76d6\u5b83\u4eec\u3002\u5de5\u4f5c \u66ff\u6362\u4e3a\u6570\u636e\u5e93\u4e2d\u5df2\u5b58\u5728\u7684 sObject\uff0c\u800c\u662f\u4f20\u9012 sObject ID\uff08\u6216 \u96c6\u5408\uff09\uff0c\u5e76\u4f7f\u7528\u8be5 ID \u5bf9\u6700\u65b0\u8bb0\u5f55\u6267\u884c\u67e5\u8be2\u3002\u8fd9 \u4ee5\u4e0b\u793a\u4f8b\u6f14\u793a\u5982\u4f55\u4f7f\u7528 ID \u5217\u8868\u6267\u884c\u6b64\u64cd\u4f5c\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>global class FutureMethodRecordProcessing\n{\n    @future\n    public static void processRecords(List&lt;ID&gt; recordIds)\n    {   \n         \/\/ Get those records based on the IDs\n         List&lt;Account&gt; accts = &#91;SELECT Name FROM Account WHERE Id IN :recordIds];\n         \/\/ Process records\n    }\n}<\/code><\/pre>\n\n\n\n<p>\u4e0b\u9762\u662f\u4e00\u4e2a future \u65b9\u6cd5\u7684\u9aa8\u67b6\u793a\u4f8b\uff0c\u8be5\u65b9\u6cd5\u5bf9 \u5916\u90e8\u670d\u52a1\u3002\u8bf7\u6ce8\u610f\uff0c\u6ce8\u91ca\u9700\u8981\u4e00\u4e2a\u989d\u5916\u7684\u53c2\u6570 \uff08\uff09 \u6765\u6307\u793a\u6807\u6ce8\u662f \u5141\u8bb8\u3002\u8981\u4e86\u89e3\u6709\u5173\u6807\u6ce8\u7684\u66f4\u591a\u4fe1\u606f\uff0c\u8bf7\u53c2\u9605\u4f7f\u7528 Apex \u8c03\u7528\u6807\u6ce8\u3002<samp>callout=true<\/samp><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>global class FutureMethodExample\n{\n    @future(callout=true)\n    public static void getStockQuotes(String acctName)\n    {   \n         \/\/ Perform a callout to an external service\n    }\n\n}<\/code><\/pre>\n\n\n\n<p>\u63d2\u5165\u5177\u6709\u975e null \u89d2\u8272\u7684\u7528\u6237\u5fc5\u987b\u5728\u4e0e DML \u4e0d\u540c\u7684\u7ebf\u7a0b\u4e2d\u5b8c\u6210 \u5bf9\u5176\u4ed6 sObject \u7684\u64cd\u4f5c\u3002\u5728\u6b64\u793a\u4f8b\u4e2d\uff0c\u7c7b\u4e2d\u5b9a\u4e49\u7684 future \u65b9\u6cd5\u6267\u884c \u9996\u5e2d\u8fd0\u8425\u5b98\u89d2\u8272\u3002\u8fd9\u79cd\u672a\u6765\u7684\u65b9\u6cd5\u9700\u8981\u5728 \u7ec4\u7ec7\u3002\u4e2d\u7684\u65b9\u6cd5\u63d2\u5165\u4e00\u4e2a\u5e10\u6237\u5e76\u8c03\u7528 \u672a\u6765\u7684\u65b9\u6cd5\uff0c.<samp>insertUserWithRole<\/samp><samp>Util<\/samp><samp>useFutureMethod<\/samp><samp>MixedDMLFuture<\/samp><samp>insertUserWithRole<\/samp><\/p>\n\n\n\n<p>\u6b64\u7c7b\u5305\u542b \u63d2\u5165\u5177\u6709\u975e null \u89d2\u8272\u7684\u7528\u6237\u3002<samp>Util<\/samp><\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class Util {\n    @future\n    public static void insertUserWithRole(\n        String uname, String al, String em, String lname) {\n\n        Profile p = &#91;SELECT Id FROM Profile WHERE Name='Standard User'];\n        UserRole r = &#91;SELECT Id FROM UserRole WHERE Name='COO'];\n        \/\/ Create new user with a non-null user role ID \n        User u = new User(alias = al, email=em, \n            emailencodingkey='UTF-8', lastname=lname, \n            languagelocalekey='en_US', \n            localesidkey='en_US', profileid = p.Id, userroleid = r.Id,\n            timezonesidkey='America\/Los_Angeles', \n            username=uname);\n        insert u;\n    }\n}<\/code><\/pre>\n\n\n\n<p>\u6b64\u7c7b\u5305\u542b\u8c03\u7528\u5df2\u5b9a\u4e49\u7684\u672a\u6765\u65b9\u6cd5\u7684 main \u65b9\u6cd5 \u4ee5\u524d\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>public class MixedDMLFuture {\n    public static void useFutureMethod() {\n        \/\/ First DML operation\n        Account a = new Account(Name='Acme');\n        insert a;\n        \n        \/\/ This next operation (insert a user with a role) \n        \/\/ can't be mixed with the previous insert unless \n        \/\/ it is within a future method. \n        \/\/ Call future method to insert a user with a role.\n        Util.insertUserWithRole(\n            'mruiz@awcomputing.com', 'mruiz', \n            'mruiz@awcomputing.com', 'Ruiz');        \n    }\n}<\/code><\/pre>\n\n\n\n<p>\u53ef\u4ee5\u50cf\u8c03\u7528\u4efb\u4f55\u5176\u4ed6\u65b9\u6cd5\u4e00\u6837\u8c03\u7528\u5c06\u6765\u7684\u65b9\u6cd5\u3002\u7136\u800c\uff0c\u672a\u6765 \u65b9\u6cd5\u4e0d\u80fd\u8c03\u7528\u53e6\u4e00\u4e2a future \u65b9\u6cd5\u3002<\/p>\n\n\n\n<p>\u5e26\u6709\u6ce8\u89e3\u7684\u65b9\u6cd5\u5177\u6709 \u4ee5\u4e0b\u9650\u5236\uff1a<samp>future<\/samp><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5728\u6279\u5904\u7406\u548c\u672a\u6765\u4e0a\u4e0b\u6587\u4e2d\u4e0d\u8d85\u8fc7 0;50 \u4e2a\u53ef\u6392\u961f\u7684\u4e0a\u4e0b\u6587\u65b9\u6cd5\u8c03\u7528 \u6bcf\u4e2a Apex \u8c03\u7528\u3002\u5f02\u6b65\u8c03\u7528\uff0c\u4f8b\u5982 \u6216 \uff0c \u5728 \u3001 \u5757\u4e2d\u8c03\u7528\uff0c\u4e0d\u8ba1\u5165\u60a8\u7684\u9650\u5236 \u8868\u793a\u6392\u961f\u4f5c\u4e1a\u7684\u6570\u91cf\u3002<samp>@futureexecuteBatchstartTeststopTest<\/samp>\u6ce8\u610f\u5c06\u591a\u4e2a\u672a\u6765\u65b9\u6cd5\u6247\u51fa \u4e0d\u5efa\u8bae\u5c06\u53ef\u6392\u961f\u4f5c\u4e1a\u4f5c\u4e3a\u505a\u6cd5\uff0c\u56e0\u4e3a\u5b83\u53ef\u4ee5\u5feb\u901f\u6dfb\u52a0\u5927\u91cf \u5f02\u6b65\u961f\u5217\u7684 future \u65b9\u6cd5\u3002\u8bf7\u6c42\u5904\u7406\u53ef\u80fd\u4f1a\u5ef6\u8fdf\uff0c\u5e76\u4e14 \u60a8\u53ef\u4ee5\u5feb\u901f\u8fbe\u5230\u5f02\u6b65 Apex \u65b9\u6cd5\u7684\u6bcf\u65e5\u6700\u5927\u9650\u5236 \u6267\u884c\u3002\u67e5\u770b\u672a\u6765\u65b9\u6cd5 \u6027\u80fd\u6700\u4f73\u5b9e\u8df5\u548c\u00a0Lightning \u5e73\u53f0 Apex\u9650\u5236\u3002<\/li>\n\n\n\n<li>\u65b9\u6cd5\u7684\u6700\u5927\u6570\u91cf \u6bcf 24 \u5c0f\u65f6\u7684\u8c03\u7528\u6b21\u6570\u4e3a 250,000 \u6b21\uff0c\u6216\u8005\u662f \u7ec4\u7ec7\u4e58\u4ee5 200\uff0c\u4ee5\u8f83\u5927\u8005\u4e3a\u51c6\u3002\u6b64\u9650\u5236\u9002\u7528\u4e8e\u60a8\u7684\u6574\u4e2a \u7ec4\u7ec7\u5e76\u4e0e\u6240\u6709\u5f02\u6b65 Apex \u5171\u4eab\uff1aBatch Apex\u3001Queueable Apex\u3001scheduled Apex\u548c\u672a\u6765\u7684\u65b9\u6cd5\u3002\u68c0\u67e5\u6709\u591a\u5c11\u4e2a\u5f02\u6b65 Apex \u6267\u884c \uff0c\u5219\u5411 REST API \u8d44\u6e90\u53d1\u51fa\u8bf7\u6c42\u3002\u67e5\u770b\u6e05\u5355\u00a0REST API \u5f00\u53d1\u4eba\u5458\u6307\u5357\u4e2d\u7684\u7ec4\u7ec7\u9650\u5236\u3002\u8ba1\u5165\u7684\u8bb8\u53ef\u8bc1\u7c7b\u578b \u6b64\u9650\u5236\u5305\u62ec\u5b8c\u6574\u7684 Salesforce \u548c Salesforce Platform \u7528\u6237\u8bb8\u53ef\u8bc1\u3001\u5e94\u7528\u7a0b\u5e8f \u8ba2\u9605\u7528\u6237\u8bb8\u53ef\u8bc1\u3001\u4ec5\u9650 Chatter \u7528\u6237\u3001\u8eab\u4efd\u7528\u6237\u548c\u516c\u53f8 \u793e\u533a\u7528\u6237\u3002<samp>futurelimits<\/samp><\/li>\n<\/ul>\n\n\n\n<p>\u6ce8\u610f<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u5982\u679c\u4e8b\u52a1\u6eda\u52a8\uff0c\u5219\u4e0d\u4f1a\u5904\u7406\u4e8b\u52a1\u6392\u961f\u7684\u672a\u6765\u4f5c\u4e1a \u8fd4\u56de\u3002<\/li>\n\n\n\n<li>\u5728 Salesforce \u670d\u52a1\u7ef4\u62a4\u505c\u673a\u4e4b\u524d\u6392\u961f\u7684\u672a\u6765\u65b9\u6cd5\u4f5c\u4e1a \u7559\u5728\u961f\u5217\u4e2d\u3002\u670d\u52a1\u505c\u673a\u7ed3\u675f\u540e\u4ee5\u53ca\u7cfb\u7edf\u8d44\u6e90 \u53d8\u5f97\u53ef\u7528\uff0c\u5219\u5c06\u6267\u884c\u6392\u961f\u7684\u672a\u6765\u65b9\u6cd5\u4f5c\u4e1a\u3002\u5982\u679c\u5c06\u6765\u7684\u65b9\u6cd5 \u5728\u53d1\u751f\u505c\u673a\u65f6\u6b63\u5728\u8fd0\u884c\uff0c\u5c06\u6765\u7684\u65b9\u6cd5\u6267\u884c\u5c06\u56de\u6eda \u5e76\u5728\u670d\u52a1\u6062\u590d\u540e\u91cd\u65b0\u542f\u52a8\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u6d4b\u8bd5\u672a\u6765\u7684\u65b9\u6cd5<\/h2>\n\n\n\n<p>\u82e5\u8981\u6d4b\u8bd5\u4f7f\u7528\u6ce8\u91ca\u5b9a\u4e49\u7684\u65b9\u6cd5\uff0c\u8bf7\u5728\u00a0startTest\uff08\uff09 \u548c\u00a0stopTest\uff08\uff09\u00a0\u4ee3\u7801\u5757\u4e2d\u8c03\u7528\u5305\u542b\u8be5\u65b9\u6cd5\u7684\u7c7b\u3002\u5168\u90e8\u5f02\u6b65 \u5728\u8be5\u65b9\u6cd5\u4e4b\u540e\u8fdb\u884c\u7684\u8c03\u7528\u662f \u7531\u7cfb\u7edf\u6536\u96c6\u3002\u4ec0\u4e48\u65f6\u5019\u662f \u6267\u884c\u65f6\uff0c\u6240\u6709\u5f02\u6b65\u8fdb\u7a0b\u90fd\u540c\u6b65\u8fd0\u884c\u3002<samp>futurestartTeststopTest<\/samp>\u5bf9\u4e8e\u6211\u4eec\u7684\u793a\u4f8b\uff0c\u4e0b\u9762\u662f\u6d4b\u8bd5\u7c7b\u3002<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>@isTest\nprivate class MixedDMLFutureTest {\n    @isTest static void test1() {\n        User thisUser = &#91;SELECT Id FROM User WHERE Id = :UserInfo.getUserId()];\n       \/\/ System.runAs() allows mixed DML operations in test context\n        System.runAs(thisUser) {\n            \/\/ startTest\/stopTest block to run future method synchronously\n            Test.startTest();        \n            MixedDMLFuture.useFutureMethod();\n            Test.stopTest();\n        }\n        \/\/ The future method will run after Test.stopTest();\n    \n        \/\/ Verify account is inserted\n        Account&#91;] accts = &#91;SELECT Id from Account WHERE Name='Acme'];\n        System.assertEquals(1, accts.size());\n        \/\/ Verify user is inserted\n        User&#91;] users = &#91;SELECT Id from User where username='mruiz@awcomputing.com'];\n        System.assertEquals(1, users.size());\n    }\n}<\/code><\/pre>\n\n\n\n<h2 class=\"wp-block-heading\">\u672a\u6765\u65b9\u6cd5\u6027\u80fd\u6700\u4f73\u5b9e\u8df5<\/h2>\n\n\n\n<p><a><\/a>Salesforce \u4f7f\u7528\u57fa\u4e8e\u961f\u5217\u7684\u6846\u67b6\u6765\u5904\u7406 \u6765\u81ea\u672a\u6765\u65b9\u6cd5\u548c\u6279\u5904\u7406 Apex \u7b49\u6765\u6e90\u7684\u5f02\u6b65\u8fc7\u7a0b\u3002\u8fd9 \u961f\u5217\u7528\u4e8e\u5728\u7ec4\u7ec7\u4e4b\u95f4\u5e73\u8861\u8bf7\u6c42\u5de5\u4f5c\u8d1f\u8f7d\u3002\u4f7f\u7528 \u9075\u5faa\u6700\u4f73\u5b9e\u8df5\uff0c\u4ee5\u786e\u4fdd\u60a8\u7684\u7ec4\u7ec7\u6709\u6548\u5730\u4f7f\u7528\u961f\u5217 \u7528\u4e8e\u5f02\u6b65\u8fdb\u7a0b\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>\u907f\u514d\u5c06\u5927\u91cf\u5c06\u6765\u7684\u65b9\u6cd5\u6dfb\u52a0\u5230\u5f02\u6b65\u961f\u5217\u4e2d\uff0c\u5982\u679c \u53ef\u80fd\u3002<a><\/a>\u5982\u679c\u8d85\u8fc7 2,000 \u6765\u81ea\u5355\u4e2a\u7ec4\u7ec7\u7684\u672a\u5904\u7406\u8bf7\u6c42\u5728\u961f\u5217\u4e2d\uff0c\u4efb\u4f55 \u6765\u81ea\u540c\u4e00\u7ec4\u7ec7\u7684\u5176\u4ed6\u8bf7\u6c42\u5c06\u88ab\u5ef6\u8fdf\uff0c\u800c \u961f\u5217\u5904\u7406\u6765\u81ea\u5176\u4ed6\u7ec4\u7ec7\u7684\u8bf7\u6c42\u3002<\/li>\n\n\n\n<li>\u786e\u4fdd\u5c06\u6765\u7684\u65b9\u6cd5\u5c3d\u53ef\u80fd\u5feb\u5730\u6267\u884c\u3002\u786e\u4fdd\u5feb\u901f\u6267\u884c \u6279\u5904\u7406\u4f5c\u4e1a\uff0c\u6700\u5927\u7a0b\u5ea6\u5730\u51cf\u5c11 Web \u670d\u52a1\u6807\u6ce8\u65f6\u95f4\uff0c\u5e76\u4f18\u5316 \u672a\u6765\u7684\u65b9\u6cd5\u3002\u672a\u6765\u65b9\u6cd5\u6267\u884c\u7684\u65f6\u95f4\u8d8a\u957f\uff0c\u5176\u4ed6\u65b9\u6cd5\u7684\u53ef\u80fd\u6027\u5c31\u8d8a\u5927 \u5f53 \u961f\u5217\u3002<\/li>\n\n\n\n<li>\u5927\u89c4\u6a21\u6d4b\u8bd5\u60a8\u672a\u6765\u7684\u65b9\u6cd5\u3002\u4e3a\u4e86\u5e2e\u52a9\u786e\u5b9a\u662f\u5426\u53ef\u80fd\u53d1\u751f\u5ef6\u8fdf\uff0c\u8bf7\u6d4b\u8bd5 \u4f7f\u7528\u751f\u6210\u6700\u5927\u6570\u91cf\u7684\u672a\u6765\u65b9\u6cd5\u7684\u73af\u5883 \u671f\u5f85\u5904\u7406\u3002<\/li>\n\n\n\n<li>\u8003\u8651\u4f7f\u7528\u6279\u5904\u7406 Apex \u800c\u4e0d\u662f\u5c06\u6765\u7684\u65b9\u6cd5\u6765\u5904\u7406\u5927\u91cf \u8bb0\u5f55\u3002<\/li>\n<\/ul>\n\n\n\n<p><a href=\"https:\/\/developer.salesforce.com\/docs\/atlas.en-us.apexcode.meta\/apexcode\/apex_async_overview.htm\">ref<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Apex \u63d0\u4f9b\u4e86\u591a\u79cd\u5f02\u6b65\u8fd0\u884c Apex \u4ee3\u7801\u7684\u65b9\u6cd5\u3002\u9009\u62e9 \u6700\u9002\u5408\u60a8\u9700\u6c42\u7684\u5f02\u6b65 Apex \u529f\u80fd\u3002<\/p>\n","protected":false},"author":1,"featured_media":3683,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[199],"tags":[204],"class_list":["post-3682","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-apex-","tag-apex"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.7 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u5f02\u6b65Apex - \u767d\u767d\u968f\u7b14<\/title>\n<meta name=\"description\" content=\"Apex \u63d0\u4f9b\u4e86\u591a\u79cd\u5f02\u6b65\u8fd0\u884c Apex \u4ee3\u7801\u7684\u65b9\u6cd5\u3002\u9009\u62e9 \u6700\u9002\u5408\u60a8\u9700\u6c42\u7684\u5f02\u6b65 Apex \u529f\u80fd\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/www.ponybai.com\/?p=3682\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u5f02\u6b65Apex - \u767d\u767d\u968f\u7b14\" \/>\n<meta property=\"og:description\" content=\"Apex \u63d0\u4f9b\u4e86\u591a\u79cd\u5f02\u6b65\u8fd0\u884c Apex \u4ee3\u7801\u7684\u65b9\u6cd5\u3002\u9009\u62e9 \u6700\u9002\u5408\u60a8\u9700\u6c42\u7684\u5f02\u6b65 Apex \u529f\u80fd\u3002\" \/>\n<meta property=\"og:url\" content=\"http:\/\/www.ponybai.com\/?p=3682\" \/>\n<meta property=\"og:site_name\" content=\"\u767d\u767d\u968f\u7b14\" \/>\n<meta property=\"article:published_time\" content=\"2023-11-24T08:48:01+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-11-24T08:49:09+00:00\" \/>\n<meta property=\"og:image\" content=\"http:\/\/www.ponybai.com\/wp-content\/uploads\/2023\/11\/\u5f02\u6b65apex.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1204\" \/>\n\t<meta property=\"og:image:height\" content=\"292\" \/>\n\t<meta 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