不瞭解工作流框架Activiti中的流程事件？這篇工作流流程元素詳解，帶你詳細分析工作流流程執行過程中的各種事件

{"type":"doc","content":[{"type":"heading","attrs":{"align":null,"level":1},"content":[{"type":"text","text":"自定義擴展","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"BPMN 2.0標準對於各方都是一個好東西","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"用戶不用擔心會綁死在供應商提供的專有解決方案上","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"框架,特別是activiti這樣的開源框架,可以提供相同功能,甚至是更好的實現,足以和大的供應商媲美","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"按照BPMN 2.0標準,從大供應商的解決方案遷移到activiti只要經過一個簡單而平滑的過程","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"BPMN 2.0標準不好的一點是","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"它常常是不同公司之間大量討論和妥協的結果","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"作爲開發者去閱讀流程定義的BPMN 2.0xml時,有時會感覺用這種結構和方法去做事太麻煩了","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"因此activiti把簡化開發作爲最優先的事情,使用一些被稱爲","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"Activiti BPMN擴展","attrs":{}},{"type":"text","text":"的功能,這些擴展是新的結構或方法來簡化對應的結構,並不屬於BPMN 2.0規範","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"根據BPMN 2.0標準開發自定義擴展的注意點:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"自定義擴展的前提是","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"總有簡單的方法轉換成標準方法.","attrs":{}},{"type":"text","text":" 所以使用自定義擴展時,可以及時撤銷自定義擴展","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"當使用自定義擴展時 ","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":",總會清楚的指明使用了新的XML元素,屬性...","attrs":{}},{"type":"text","text":" 比如會使用activiti:命名空間前綴","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"擴展的目標是最終加入到下一版本的BPMN規範,或者至少可以引起對特定BPMN結構的討論","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":1},"content":[{"type":"text","text":"事件","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"事件用來","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"表明流程的生命週期中發生了什麼事.","attrs":{}},{"type":"text","text":" 事件總是畫成一個","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"圓圈","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在BPMN 2.0中,事件有兩大分類:","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"捕獲(catching)事件","attrs":{}},{"type":"text","text":" 或","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"觸發(throwing)事件:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"捕獲(catching):","attrs":{}},{"type":"text","text":" 當流程執行到事件,會等待被觸發.觸發的類型是由內部圖表或XML中的類型聲明來決定的.捕獲事件與觸發事件在顯示方面是根據內部圖表是否被填充來區分的(白色)","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"觸發(throwing):","attrs":{}},{"type":"text","text":" 當流程執行到事件,會觸發一個事件.觸發的類型是由內部圖表或XML中的類型聲明來決定的.觸發事件與捕獲事件在顯示方面是根據內部圖表是否被填充來區分的(黑色)","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":3},"content":[{"type":"text","text":"事件定義","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"事件定義決定了事件的語義.","attrs":{}},{"type":"text","text":" 如果沒有事件定義,這個事件就不做什麼特別的事情.沒有設置事件定義的開始事件不會在啓動流程時做任何事情","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"如果給開始事件添加了一個事件定義(比如定時器事件定義)我們就聲明瞭開始流程的事件類型(這時定時器事件監聽器會在某個時間被觸發)","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":3},"content":[{"type":"text","text":"定時器事件定義","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"定時器事件是根據指定的時間觸發的事件","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"定時器事件可以用於開始事件,中間事件和邊界事件","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"==","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"定時器定義元素:","attrs":{}},{"type":"text","text":"==","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"timeDate:","attrs":{}},{"type":"text","text":" ","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"觸發事件的時間.","attrs":{}},{"type":"text","text":" 使用ISO8601格式指定的一個確定的時間:","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n 2011-03-11T12:13:14\n\n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"timeDuration:","attrs":{}},{"type":"text","text":" ","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"指定定時器之前要等待多長時間.","attrs":{}},{"type":"text","text":" timeDuration可以設置爲","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"timerEventDefinition","attrs":{}},{"type":"text","text":"的子元素,使用ISO8601規定的格式","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n \n P10D\n\n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"timeCycle:","attrs":{}},{"type":"text","text":" ","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"指定重複執行的間隔.","attrs":{}},{"type":"text","text":" 可以用來定期啓動流程實例,或爲超時時間發送多個提醒.timeCycle元素可以使用兩種格式:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"ISO8601標準的格式","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"cron表達式","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n \n R3/PT10H\n\n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"從整點開始,每5分鐘執行一次:","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"0 0/5 * * * ?\n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"==注意:==","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"第一個數字表示秒,","attrs":{}},{"type":"text","text":" 而不是像通常Unix cron中那樣表示分鐘","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"重複的時間週期能更好的處理相對時間,","attrs":{}},{"type":"text","text":" 可以計算一些特定的時間點:用戶任務的開始時間","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"cron表達式可以處理絕對時間,","attrs":{}},{"type":"text","text":" 這對定時啓動事件特別有用","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"在定時器事件定義中使用表達式,可以通過流程變量來影響那個定時器定義:","attrs":{}},{"type":"text","text":" 流程定義必須包含ISO8601(或者cron)格式的字符串,以匹配對應的時間類型","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":" \n \n ${duration}\n \n \n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"只有啓用job執行器之後,定時器纔會被觸發.","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"activiti.cfg.xml","attrs":{}},{"type":"text","text":"中的","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"jobExecutorActivate","attrs":{}},{"type":"text","text":"需要設置爲","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"true,","attrs":{}},{"type":"text","text":" 默認job執行器是關閉的","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":3},"content":[{"type":"text","text":"錯誤事件定義","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"錯誤事件是由指定錯誤觸發的","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"==","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"注意:","attrs":{}},{"type":"text","text":"==","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"BPMN錯誤與Java異常完全不一樣:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":2,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"BPMN錯誤事件是爲了對業務異常建模","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":2,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"Java異常是要用特定方式處理","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"錯誤事件定義會引用一個error元素,引用相同error元素的錯誤事件處理器會捕獲這個錯誤","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n \n \n\n","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":3},"content":[{"type":"text","text":"信號事件定義","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"信號事件會引用一個已命名的信號","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"信號全局範圍的事件(廣播語義).會發送給所有激活的處理器","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"信號事件定義使用","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"signalEventDefinition","attrs":{}},{"type":"text","text":"元素 ","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":".signalRef","attrs":{}},{"type":"text","text":"屬性會引用","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"definitions","attrs":{}},{"type":"text","text":"根節點裏定義的","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"signal","attrs":{}},{"type":"text","text":"子元素(signalEventDefinition引用相同的signal元素)","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n\n \n \n\n \n \n \n \n \n ...\n \n \n \n \n ...\n \n\n","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"觸發信號事件","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"可以通過bpmn節點由流程實例觸發一個信號.也可以通過API觸發","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"org.activiti.engine.RuntimeService","attrs":{}},{"type":"text","text":"中的方法可以用來手工觸發一個信號:","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"java"},"content":[{"type":"text","text":"RuntimeService.signalEventReceived(String signalName);\nRuntimeService.signalEventReceived(String signalName, String executionId);\n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"signalEventReceived(String signalName):","attrs":{}},{"type":"text","text":" 把信號發送給全局所有訂閱的處理(廣播語義)","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"signalEventReceived(String signalName, String executionId):","attrs":{}},{"type":"text","text":" 把信號發送給指定的執行","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"捕獲信號事件","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"信號事件可以被中間信號事件或邊界信息事件捕獲","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"查詢信號事件的訂閱","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"查詢所有訂閱特定信號事件的執行","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"java"},"content":[{"type":"text","text":" List executions = runtimeService.createExecutionQuery()\n .signalEventSubscriptionName(\"alert\")\n .list();\n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"使用","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"signalEventReceived(String signalName, String executionId)","attrs":{}},{"type":"text","text":" 把信號發送給這些執行","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"信號事件範圍","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"默認情況下,信號會在流程引擎範圍內進行廣播:","attrs":{}},{"type":"text","text":" 在一個流程實例中拋出一個信號事件,其他不同流程定義的流程實例都可以監聽到這個事件","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"有時只要在同一個流程實例中響應這個信號事件:流程實例中的同步機制,如果兩個或更多活動是互斥的","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"要想限制信號事件的範圍,","attrs":{}},{"type":"text","text":" 可以使用信號事件定義的","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"scope","attrs":{}},{"type":"text","text":"屬性:","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"默認情況下,","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"scope","attrs":{}},{"type":"text","text":"的屬性爲","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"global","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"信號事件實例","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"不同流程使用信號交互:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"流程在保險規則更新或改變時啓動.在修改被參與者處理時,會觸發一個信號,通知規則改變:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/b8/b845121391a67ee466a20a20f210b0be.png","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"這個事件會被所有相關的流程實例捕獲","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"訂閱這個事件的流程實例:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/06/06621e8ff26af398d363e0283453aba5.png","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"信號事件是廣播給所有激活的處理器的","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在上面的例子中,所有流程實例都會接收到這個事件,這就是我們想要的.","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"然而,有的情況下並不想要這種廣播行爲,考慮下面的流程:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/9d/9d7a7ce5f2df4be59838afb6fb3e0c86.png","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"上述流程描述的模式activiti並不支持.這種想法是:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"執行[do something]任務時出現的錯誤","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"被邊界錯誤事件捕獲","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"然後使用信號傳播給併發路徑上的分支","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"進而中斷[do something inparallel]任務","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"目前,activiti實際運行的結果與期望一致.信號會傳播給邊界事件並中斷任務.但是,根據信號的廣播含義,也會傳播給所有其他訂閱了信號事件的流程實例.所以,這就不是我們想要的結果","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"==","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"注意:","attrs":{}},{"type":"text","text":"==","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"信號事件不會執行任何與特定流程實例的聯繫","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"如果只想把一個信息發給指定的流程實例,需要手工關聯,再使用 ","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"signalEventReceived(String signalName, String executionId)","attrs":{}},{"type":"text","text":" 和對應的","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"查詢機制","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":3},"content":[{"type":"text","text":"消息事件定義","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"消息事件會引用一個命名的消息,每個消息都有名稱和內容","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"消息事件總會直接發送給一個接受者","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"消息事件定義使用","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"messageEventDefinition","attrs":{}},{"type":"text","text":"元素.","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"messageRef","attrs":{}},{"type":"text","text":"屬性引用了","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"definitions","attrs":{}},{"type":"text","text":"根節點下的一個","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"message","attrs":{}},{"type":"text","text":"子元素:","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n\n\n \n \n\n \n\n \n \n \n ...\n \n \n \n ...\n \n\n\n","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"觸發消息事件","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"作爲一個嵌入式的流程引擎,activiti不能真正接收一個消息","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"這些環境相關,與平臺相關的活動:比如連接到JMS(Java消息服務)隊列或主題或執行","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"WebService或REST請求.","attrs":{}},{"type":"text","text":" 這個消息的接收是你要在應用或架構的一層實現的,流程引擎則內嵌其中","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"在應用接收一個消息之後,必須決定如何處理它:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"如果消息應該觸發啓動一個新流程實例,在下面的","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"RuntimeService","attrs":{}},{"type":"text","text":"的兩個方法中選擇一個執行:","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"java"},"content":[{"type":"text","text":"ProcessInstance startProcessInstanceByMessage(String messageName);\nProcessInstance startProcessInstanceByMessage(String messageName, Map processVariables);\nProcessInstance startProcessInstanceByMessage(String messageName, String businessKey, Map processVariables); \n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"這些方法允許使用對應的消息系統流程實例","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"如果消息需要被運行中的流程實例處理:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"首先要根據消息找到對應的流程實例","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"然後觸發這個等待中的流程","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"RuntimeService","attrs":{}},{"type":"text","text":"提供了可以基於消息事件的訂閱來觸發流程繼續執行:","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"java"},"content":[{"type":"text","text":"void messageEventReceived(String messageName, String executionId);\nvoid messageEventReceived(String messageName, String executionId, HashMap processVariables); \n","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"查詢消息事件訂閱","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"Activiti支持","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"開始消息事件","attrs":{}},{"type":"text","text":"和","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"中間消息事件","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"消息開始事件:","attrs":{}},{"type":"text","text":" 消息事件訂閱分配給一個特定的","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"process definition.","attrs":{}},{"type":"text","text":" 這個消息訂閱可以使用","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"ProcessDefinitionQuery","attrs":{}},{"type":"text","text":"查詢到","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"java"},"content":[{"type":"text","text":"ProcessDefinition processDefinition = repositoryService.createProcessDefinitionQuery()\n .messageEventSubscription(\"newCallCenterBooking\")\n .singleResult();\n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"因爲同時只能有一個流程定義關聯到消息的訂閱點,查詢總是返回0或一個結果.如果流程定義更新了,那麼只有最新版本的流程定義會訂閱到消息事件上","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"中間捕獲消息事件:","attrs":{}},{"type":"text","text":" 消息事件訂閱會分配給特定的執行,這個消息事件訂閱可以使用","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"ExecutionQuery","attrs":{}},{"type":"text","text":"查詢到:","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"java"},"content":[{"type":"text","text":"Execution execution = runtimeService.createExecutionQuery()\n .messageEventSubscriptionName(\"paymentReceived\")\n .variableValueEquals(\"orderId\", message.getOrderId())\n .singleResult();\n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"這個查詢可以調用對應的查詢,通常是流程相關的信息 ","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":":最多隻能有一個流程實例對應着orderId","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"消息事件實例","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"使用兩個不同消息啓動的流程實例:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/b6/b6df6590cb4dcd818722c1ffa6189e71.png","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"消息事件可以用於流程需要不同的方式來區分開始事件時,最終會進入同樣的路徑","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":3},"content":[{"type":"text","text":"開始事件","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"開始事件用來指明流程在哪裏開始","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"開始事件的類型(流程在接收事件時啓動,還是在指定時間啓動...),","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"定義了流程如何啓動,","attrs":{}},{"type":"text","text":" 這通過事件中不同的小圖表來展示.在XML中,這些類型是通過聲明不同的子元素來區分","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"開始事件都是捕獲事件:","attrs":{}},{"type":"text","text":" 最終這些事件都是一直等待着,直到對應的","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"觸發時機","attrs":{}},{"type":"text","text":"出現","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在開始事件中,可以設置activiti特定屬性:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"initiator:","attrs":{}},{"type":"text","text":" 當流程啓動時,把當前登錄的用戶保存到指定的變量名中:","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":" \n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"登錄的用戶必須使用","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"IdentityService.setAuthenticatedUserId(String)","attrs":{}},{"type":"text","text":" 方法設置,幷包含在","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"try-finally","attrs":{}},{"type":"text","text":"代碼中:","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"java"},"content":[{"type":"text","text":" try {\n identityService.setAuthenticatedUserId(\"bono\");\n runtimeService.startProcessInstanceByKey(\"someProcessKey\");\n} finally {\n identityService.setAuthenticatedUserId(null);\n}\n","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":4},"content":[{"type":"text","text":"空開始事件","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"描述","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"空開始事件技術上意味着沒有指定啓動流程實例的觸發條件","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"引擎不能預計什麼時候流程實例會啓動","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"空開始事件用於:","attrs":{}},{"type":"text","text":" 當流程實例要通過API啓動的場景,通過調用","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"startProcessInstanceByXXX","attrs":{}},{"type":"text","text":"方法","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"子流程都有一個空開始事件","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"java"},"content":[{"type":"text","text":"ProcessInstance processInstance = runtimeService.startProcessInstanceByXXX();\n","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"圖形標記","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"空開始事件顯示成一個圓圈.沒有內部圖表,即沒有觸發類型","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/bc/bcb7cfec8a17bfa405a426019a2aa85a.png","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"XML結構","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"空開始事件的XML結構是普通的開始事件定義 ","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":",沒有任何子元素","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"其他開始事件類型都有一個子元素來聲明自己的類型","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"空開始事件的自定義擴展","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"formKey:","attrs":{}},{"type":"text","text":" 引用用戶在啓動新流程實例時需要填寫的表單模板","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":4},"content":[{"type":"text","text":"定時開始事件","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"描述","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"定時開始事件用來在指定的時間創建流程實例:","attrs":{}},{"type":"text","text":" 可以同時用於只啓動一次的流程和應該在特定時間間隔啓動多次的流程","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"==注意:==","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"子流程不能使用定時開始事件","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"定時開始事件在流程發佈後就會開始計算時間","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":2,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"不需要調用startProcessInstanceByXXX,","attrs":{}},{"type":"text","text":" 雖然也可以調用啓動流程的方法,但是那會導致調用startProcessInstanceByXXX時啓動過多的流程","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"當包含定時開始事件的新版本流程部署時, 對應的上一個定時器就會被刪除.","attrs":{}},{"type":"text","text":" 這是因爲通常不希望自動啓動舊版本流程的流程實例","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"圖形標記","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"定時開始事件顯示爲一個圓圈,內部是一個表:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/b3/b330ce137f9da4f825976aac247973dd.png","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"XML內容","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"定時開始事件的XML內容是普通開始事件的聲明**,包含一個定時定義子元素**","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":" \n \n \n R4/2011-03-11T12:13/PT5M\n \n \n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":" \n \n \n 2011-03-11T12:13:14\n \n \n","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":4},"content":[{"type":"text","text":"消息開始事件","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"描述","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"消息開始事件可以使用一個命名的消息來啓動流程實例,這樣可以使用消息名稱來選擇正確的開始事件","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"在發佈包含一個或多個消息開始事件的流程定義時:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"消息開始事件的名稱在給定流程定義中不能重複:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":2,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"流程定義不能包含多個名稱相同的消息開始事件","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":2,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"如果兩個或以上消息開始事件應用了相同的事件","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":2,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"或兩個或以上消息事件引用的消息名稱相同","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":2,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"activiti會在","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"發佈流程定義時拋出異常","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"消息開始事件的名稱在所有已發佈的流程定義中不能重複:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":2,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"如果一個或多個消息開始事件引用了相同名稱的消息","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":2,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"而這個消息開始事件已經部署到不同的流程定義中","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":2,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"activiti就會","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"在發佈時拋出一個異常","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"在發佈新版本的流程定義時,之前訂閱的消息訂閱會被取消:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":2,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"如果新版本中沒有消息事件也會這樣處理","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"啓動流程實例,消息開始事件可以使用","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"RuntimeService","attrs":{}},{"type":"text","text":"中的方法來觸發:","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"java"},"content":[{"type":"text","text":"ProcessInstance startProcessInstanceByMessage(String messageName);\nProcessInstance startProcessInstanceByMessage(String messageName, Map processVariables);\nProcessInstance startProcessInstanceByMessage(String messageName, String businessKey, Map\n\n \n\n \n\n \n \n \n ...\n \n\n\n","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":4},"content":[{"type":"text","text":"信號開始事件","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"描述","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"信號開始事件可以通過一個已命名的信號(signal)來啓動一個流程實例","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"信號可以在流程實例內部使用","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"中間信號拋出事務","attrs":{}},{"type":"text","text":"觸發","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"也可以通過API(","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"runtimService.signalEventReceivedXXX","attrs":{}},{"type":"text","text":")觸發","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"兩種情況下,所有流程實例中","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"擁有相同名稱的signalStartEvent都會啓動","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"兩種情況下,都可以選擇","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"同步或異步","attrs":{}},{"type":"text","text":"的方式啓動流程實例","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"必須向API傳入","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"signalName,","attrs":{}},{"type":"text","text":" 這是","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"signal","attrs":{}},{"type":"text","text":"元素的","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"name","attrs":{}},{"type":"text","text":"屬性值,它會被","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"signalEventDefinition","attrs":{}},{"type":"text","text":"的","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"signalRef","attrs":{}},{"type":"text","text":"屬性引用","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"圖形標記","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"信號開始事件顯示爲一箇中間包含信號事件圖標的圓圈.標記是無填充的,表示捕獲(接收)行爲","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/83/83645a7046195fb0d1af447e5e5e06b9.png","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"XML格式","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"signalStartEvent","attrs":{}},{"type":"text","text":"的XML格式是標準的","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"startEvent","attrs":{}},{"type":"text","text":"聲明,其中包含一個","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"signalEventDefinition","attrs":{}},{"type":"text","text":"子元素","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":" \n\n \n \n \n \n \n \n \n \n \n","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":4},"content":[{"type":"text","text":"錯誤開始事件","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"描述","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"錯誤開始事件可以用來觸發一個事件子流程.錯誤開始事件不能用來啓動流程實例","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"錯誤開始事件都是","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"中斷事件","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"圖形標記","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"錯誤開始事件是一個圓圈,包含一個錯誤事件標記.標記是白色未填充的,來表示捕獲(接收)行爲","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/78/7889b4df5b00a2068997056cd796de01.png","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"XML內容","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"錯誤開始事件的XML內容是普通開始事件定義中,包含一個 ","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"errorEventDefinition","attrs":{}},{"type":"text","text":"子元素","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n \n\n","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":3},"content":[{"type":"text","text":"結束事件","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"結束事件表示(子)流程(分支)的結束","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"結束事件都是","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"觸發事件:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"流程達到結束事件,會觸發一個結果","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"結果的類型是通過事件的內部","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"黑色圖標","attrs":{}},{"type":"text","text":"表示的","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在XML內容中,通過包含的子元素聲明","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":4},"content":[{"type":"text","text":"空結束事件","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"描述","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"空結束事件意味着到達事件時不會指定拋出的結果","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"引擎會直接結束當前執行的分支,不會做其他事情","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"圖形標記","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"空結束事件是一個","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"粗邊圓圈,","attrs":{}},{"type":"text","text":" 內部沒有小圖標(無結果類型)","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/68/680478c594c7ee56021c1067b3c51e1f.png","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"XML內容","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"空結束事件的XML內容是普通結束事件定義","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"不包含子元素,其他結束事件類型都會包含聲明類型的子元素","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":4},"content":[{"type":"text","text":"錯誤結束事件","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"描述","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"當流程執行到錯誤結束事件 ","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":",流程的當前分支就會結束,並拋出一個錯誤","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"這個錯誤可以被對應的中間邊界錯誤事件捕獲.如果找不到匹配的邊界錯誤事件,就會拋出一個異常","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"圖形標記","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"錯誤結束事件是一個標準的結束事件 ","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"-粗邊圓圈,","attrs":{}},{"type":"text","text":" 內部有","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"錯誤圖標,","attrs":{}},{"type":"text","text":" 錯誤圖標是","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"全黑的,表示觸發語法","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/c8/c827f3f826b7df9f6543ec52d83ad002.png","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"XML內容","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"錯誤結束事件的內容是一個","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"錯誤事件,","attrs":{}},{"type":"text","text":" 子元素爲","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"errorEventDefinition","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n \n\n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"errorRef屬性引用定義在流程外部的error元素:","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n...\n\n...\n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"error的errorCode用來查找","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"匹配的捕獲邊界錯誤事件","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"如果errorRef與任何error都不匹配,就會","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"使用errorRef來作爲errorCode的縮寫.","attrs":{}},{"type":"text","text":" 這是activiti特定的縮寫:","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n...\n\n...\n \n \n \n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"等同於","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n \n\n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"注意errorRef必須與BPMN 2.0格式相符,必須是一個合法的QName","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":4},"content":[{"type":"text","text":"取消結束事件","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"描述","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"取消結束事件只能與BPMN事務子流程結合使用","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"當到達取消結束事件時,會拋出取消事件 ","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":",它必須被取消邊界事件捕獲","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"取消邊界事件會取消事務，並觸發補償機制","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"圖形標記","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"取消結束事件顯示爲標準的結束事件-粗邊圓圈,包含一個取消圖標.取消圖標是全黑的,表示觸發語法","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/8d/8d27061e7041b0ccd4fc4a85df6f1aed.png","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"XML內容","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"取消結束事件內容是一個","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"結束事件,","attrs":{}},{"type":"text","text":" 包含","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"cancelEventDefinition","attrs":{}},{"type":"text","text":"子元素","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n \n\n","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":3},"content":[{"type":"text","text":"邊界事件","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"邊界事件都是捕獲事件,它會附在一個環節上","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"邊界事件是捕獲事件,不可能觸發事件:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"當節點運行時,事件會監聽對應的觸發類型","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"當事件被捕獲,節點就會中斷,同時執行事件的後續連線","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"邊界事件的定義方式都一樣:","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n \n\n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"邊界事件使用如下方式進行定義:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"唯一標識:流程範圍","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"使用caught屬性引用事件的節點,注意邊界事件和它們附加的節點在同一級別上:比如,邊界事件不是包含在節點內的","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"格式爲","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"XXXEventDefinition","attrs":{}},{"type":"text","text":"的XML子元素 (比如,TimerEventDefinition，ErrorEventDefinition...)定義了邊界事件的","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"類型","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":4},"content":[{"type":"text","text":"定時邊界事件","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"描述","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"定時邊界事件就是一個暫停等待警告的時鐘","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"當流程執行到綁定了邊界事件的環節,會啓動一個定時器","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"當定時器觸發時(一定時間之內),環節就會中斷,並沿着定時邊界事件的外出連線繼續執行","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"圖形標記","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"定時邊界事件是一個標準的","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"邊界事件","attrs":{}},{"type":"text","text":"(邊界上的一個圓圈),內部是一個定時器小圖標","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/02/0215ff226bcdc71aa6187fb0315c5107.png","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"XML內容","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"定時器邊界任務定義是一個標準的邊界事件,指定類型的子元素是","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"timerEventDefinition","attrs":{}},{"type":"text","text":"元素","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n \n PT4H\n \n\n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在流程圖中,圓圈邊線是虛線:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/af/af4608154b46f4a399cf901137847227.png","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"經典應用場景:","attrs":{}},{"type":"text","text":" 發送通知郵件,但是不打斷正常流程的執行","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"中斷和非中斷的事件還是有區別的","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":2,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"默認是中斷事件","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":2,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"非中斷事件的情況,不會中斷原始環節,那個環節還停留在原地","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":2,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"對應的,會創建一個新分支,並沿着事件的流向繼續執行.在XML內容中,要把","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"cancelActivity","attrs":{}},{"type":"text","text":"屬性設置爲","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"false","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":" \n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"==","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"注意:","attrs":{}},{"type":"text","text":"== 邊界定時事件只能在","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"job執行器啓用時","attrs":{}},{"type":"text","text":"使用","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"比如:把","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"activiti.cfg.xml","attrs":{}},{"type":"text","text":"中的","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"jobExecutorActivate","attrs":{}},{"type":"text","text":"設置爲true,默認job執行器是禁用的","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"邊界事件的問題","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"同步問題:","attrs":{}},{"type":"text","text":" 邊界事件後面不能有多條外出連線","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"解決這個問題的方法是","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"在一個連線後使用併發網關","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/2e/2e69f2c42357c1b2acfeba51cc094b82.png","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":4},"content":[{"type":"text","text":"錯誤邊界事件","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"描述","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"錯誤邊界事件:","attrs":{}},{"type":"text","text":" 節點邊界上的中間捕獲錯誤事件,會捕獲節點範圍內拋出的錯誤","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"定義一個邊界錯誤事件,大多用於","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"內嵌子流程","attrs":{}},{"type":"text","text":"或者","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"調用節點","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"對於子流程的情況,它會爲所有內部的節點創建一個作用範圍","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"錯誤是由錯誤結束事件拋出的.這個錯誤會傳遞給上層作用域,直到找到一個錯誤事件定義相匹配的邊界錯誤事件","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"當捕獲了錯誤事件時 ","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":",邊界任務綁定的節點就會銷燬,也會銷燬內部所有的執行分支","attrs":{}},{"type":"text","text":"(同步節點,內嵌子流程...).流程執行會繼續","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"沿着邊界事件的外出連線繼續執行","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"圖形標記","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"錯誤邊界事件顯示成一個普通的","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"中間事件","attrs":{}},{"type":"text","text":"(圓圈內部有一個小圓圈)放在節點的標記上,內部有一個錯誤小圖標.錯誤小圖標是白色的,表示它是一個捕獲事件","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/64/646ce115c410972ffd40afaaa092dea9.png","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"XML內容","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"邊界錯誤事件定義爲普通的邊界事件:","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n \n\n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"和錯誤結束事件一樣 ","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":",errorRef","attrs":{}},{"type":"text","text":"引用了","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"process","attrs":{}},{"type":"text","text":"元素外部的一個錯誤定義","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n...\n\n...\n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"errorCode","attrs":{}},{"type":"text","text":"用來匹配捕獲的錯誤:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"如果沒有設置errorRef,邊界錯誤事件會捕獲所有錯誤事件,無論錯誤的errorCode是什麼","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"如果設置了errorRef,並引用了一個已存在的錯誤,邊界事件就只捕獲錯誤代碼與之相同的錯誤","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"如果設置了errorRef,但是BPMN 2.0中沒有定義錯誤,errorRef就會當做errorCode使用","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"錯誤邊界事件實例","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"如何使用錯誤結束事件的流程實例","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"當完成審覈盈利這個用戶任務時,如果沒有提供足夠的信息,就會拋出錯誤","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"錯誤會被子流程的邊界任務捕獲,所有回顧銷售子流程中的所有節點都會銷燬,即使審覈客戶比率還沒有完成,並創建一個提供更多信息的用戶任務","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/84/847aa5e8acaed7a01d12167949be0243.png","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":4},"content":[{"type":"text","text":"信號邊界事件","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"描述","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"節點邊界的中間","attrs":{}},{"type":"text","text":"捕獲信號,會捕獲信號定義引用的相同信號名的信號","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"與其他事件(比如邊界錯誤事件)不同,邊界信號事件不只","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"捕獲","attrs":{}},{"type":"text","text":"綁定方位的信號.信號事件是一個全局的範圍(廣播語義),就是說","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"信號可以在任何地方觸發,即便是不同的流程實例","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"和其他事件(比如邊界錯誤事件)不同 ","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":",捕獲信號後,不會停止信號的傳播.","attrs":{}},{"type":"text","text":" 如果有兩個信號邊界事件,","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"捕獲相同的信號事件,兩個邊界事件都會被觸發,即使在不同的流程實例中","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"圖形標記","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"邊界信號事件顯示爲普通的","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"中間事件","attrs":{}},{"type":"text","text":"(圓圈裏有個小圓圈),位置在","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"節點的邊緣,","attrs":{}},{"type":"text","text":" 內部有一個信號小圖標.信號圖標是白色的(未填充),表示捕獲的意思","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/93/93fe70e6a27f1c2e5e10f0f69988e207.png","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"XML內容","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"邊界信號事件定義爲普通的","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"邊界事件:","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n \n\n","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":4},"content":[{"type":"text","text":"消息邊界事件","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"描述","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"節點邊界上的中間","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"捕獲消息,","attrs":{}},{"type":"text","text":" 根據引用的消息定義","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"捕獲相同消息名稱的消息","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"圖形標記","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"邊界消息事件顯示成一個普通的","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"中間事件","attrs":{}},{"type":"text","text":"(圓圈裏有個小圓圈),位於節點邊緣,內部是一個消息小圖標.消息圖標是白色(無填充),表示捕獲的意思","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/3d/3db333372d96de53125761987c3fd6ee.png","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"==","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"注意:","attrs":{}},{"type":"text","text":"== 邊界消息事件可能是","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"非中斷(左側)","attrs":{}},{"type":"text","text":" 或者","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"中斷(右側)","attrs":{}},{"type":"text","text":" 的","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"XML內容","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"邊界消息事件定義爲標準的","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"邊界事件","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n \n\n","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":4},"content":[{"type":"text","text":"取消邊界事件","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"描述","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"在事務性子流程的邊界上的中間捕獲取消","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"事務取消時觸發,當取消邊界事件觸發時:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"首先中斷當前作用域的所有執行","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"然後開始補償事務內的所有激活的補償邊界事件.補償是同步執行的:離開事務前,邊界事務會等待補償執行完畢","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"當補償完成後,事務子流程會沿着取消邊界事務的外出連線繼續執行","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"==","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"注意:","attrs":{}},{"type":"text","text":"==","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"每個事務子流程只能有一個取消邊界事件","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"如果事務子流程包含內嵌子流程,補償只會觸發已經成功完成的子流程","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"如果取消邊界子流程對應的事務子流程配置爲多實例,如果一個實例觸發了取消,就會取消所有實例","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"圖形標記","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"取消邊界事件顯示爲了一個普通的中間事件(圓圈裏套小圓圈),在節點的邊緣,內部是一個取消小圖標.取消圖標是白色(無填充),表明是捕獲的意思","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/4d/4d5c76be205f26e53c418e282dfbfa8b.png","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"XML內容","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"取消邊界事件定義爲普通","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"邊界事件","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n \n\n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"取消邊界事件都是中斷的,不需要使用","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"cancelActivity","attrs":{}},{"type":"text","text":"屬性","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":4},"content":[{"type":"text","text":"補償邊界事件","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"描述","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"節點邊界的中間捕獲補償","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"用來設置一個節點的補償處理器","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"補償邊界事件必須使用","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"直接引用","attrs":{}},{"type":"text","text":"設置唯一的補償處理器","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"補償邊界事件與其他邊界事件的策略不同:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"其他邊界事件(信號邊界事件)當到達關聯的節點就會被激活.離開節點時,就會掛起,對應的事件訂閱也會取消","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"補償邊界事件在關聯的節點成功完成時激活,當補償事件觸發或對應流程實例結束時,事件訂閱纔會刪除","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"補償邊界事件遵循如下規則:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"補償觸發時,補償邊界事件對應的補償處理器會調用相同次數,根據它對應的節點的成功次數","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"如果補償邊界事件關聯到多實例節點,補償事件會訂閱每個實例","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"如果補償邊界事件關聯的節點中包含循環,補償事件會在每次節點執行時進行訂閱","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"如果流程實例結束,訂閱的補償事件都會結束","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"補償邊界事件不支持內嵌子流程","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"圖形標記","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"補償邊界事件顯示爲標準中間事件(圓圈裏套圓圈),位於節點邊緣,內部有一個補償小圖標.補償圖標是白色的(無填充),表示捕獲的意思","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"下圖演示使用無方向的關聯,爲邊界事件設置補償處理器:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/97/97d9524e9b594497f74f377fbaed2b18.png","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"XML內容","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"補償邊界事件定義爲","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"標準邊界事件","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n \n\n\n\n\n\n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"補償邊界事件","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"在節點成功完成後激活,","attrs":{}},{"type":"text","text":" 不支持","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"cancelActivity","attrs":{}},{"type":"text","text":"屬性","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":3},"content":[{"type":"text","text":"中間捕獲事件","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"所有中間捕獲事件都使用同樣的方式定義:","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n \n\n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"中間捕獲事件的定義:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"唯一標識(流程範圍內)","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"一個結構爲","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"XXXEventDefinition","attrs":{}},{"type":"text","text":"的XML子元素(TimerEventDefinition)定義了中間捕獲事件的類型","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":4},"content":[{"type":"text","text":"定時中間捕獲事件","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"描述","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"定時中間事件作爲一個","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"監聽器","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"當執行到達捕獲事件節點,就會啓動一個定時器.當定時器觸發(比如,一段時間之後),流程就會沿着定時中間事件的外出節點繼續執行","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"圖形標記","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"定時器中間事件顯示成標準","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"中間捕獲事件,","attrs":{}},{"type":"text","text":" 內部是一個定時器小圖標:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/f4/f4b166a0df9f4e8a32dada177a7a4ea0.png","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"XML內容","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"定時器中間事件定義爲標準","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"中間捕獲事件.","attrs":{}},{"type":"text","text":" 指定類型的子元素爲","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"timerEventDefinition","attrs":{}},{"type":"text","text":"元素","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":" \n \n PT5M\n \n \n","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":4},"content":[{"type":"text","text":"信號中間捕獲事件","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"中間捕獲信號事件,通過","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"引用信號定義來捕獲相同信號名稱的信號","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"信號中間捕獲事件與其它事件(比如錯誤事件)不同:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"信號不會在捕獲之後被消費","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"如果有兩個激活的信號邊界事件捕獲相同的信號事件,兩個邊界事件都會被觸發,即便在不同的流程實例中","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":4},"content":[{"type":"text","text":"圖形標記","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"中間信號捕獲事件顯示爲一個普通的","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"中間事件","attrs":{}},{"type":"text","text":"(圓圈套圓圈),內部有一個信號小圖標.信號小圖標是白色的(無填充),表示捕獲的意思","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/c0/c0ee34b3f23dac0e2166c2dcffd443e3.png","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"XML內容","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"信號中間事件定義爲普通的","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"中間捕獲事件.","attrs":{}},{"type":"text","text":" 對應類型的子元素是","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"signalEventDefinition","attrs":{}},{"type":"text","text":"元素","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n \n\n","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":4},"content":[{"type":"text","text":"消息中間捕獲事件","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"描述","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"中間捕獲消息事件,捕獲特定名稱的消息","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"圖形標記","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"中間捕獲消息事件顯示爲普通","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"中間事件","attrs":{}},{"type":"text","text":"(圓圈套圓圈),內部是一個消息小圖標.消息圖標是白色的(無填充),表示捕獲的意思","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/05/05c481f3a854781cc1755d6b560d8d94.png","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"XML內容","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"消息中間事件定義爲標準","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"中間捕獲事件.","attrs":{}},{"type":"text","text":" 指定類型的子元素是","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"messageEventDefinition","attrs":{}},{"type":"text","text":"元素","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n \n\n","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":3},"content":[{"type":"text","text":"內部觸發事件","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"所有內部觸發事件的定義都是一樣的:","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n \n\n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"內部觸發事件定義包含:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"唯一標識(流程範圍)","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"使用格式爲","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"XXXEventDefinition","attrs":{}},{"type":"text","text":"的XML子元素(比如signalEventDefinition等)定義中間觸發事件的類型","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"中間觸發空事件","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"空中間觸發事件流程圖,用於表示流程中的某個狀態","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/7c/7c9537124afa9af4ad3dc4c39faec3aa.png","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"可以","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"添加執行監聽器:","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n \n \n \n\n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"可以添加自己的代碼,把事件發送給BAM工具或DWH.引擎不會爲這個事件做任何事情,它直接徑直通過","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":4},"content":[{"type":"text","text":"信號中間觸發事件","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"描述","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"信號中間觸發事件","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"爲定義的信號拋出一個信號事件","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"在activiti中,信號會","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"廣播","attrs":{}},{"type":"text","text":"到所有激活的處理器中.信號可以","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"通過同步和異步方式發佈","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"默認配置下,信號是同步發送的:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":2,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"拋出事件的流程實例會等到信號發送給所有捕獲流程實例才繼續執行","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":2,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"捕獲流程實例也會在觸發流程實例的同一個事務中執行","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":2,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"如果某個監聽流程出現了技術問題(拋出異常),所有相關的實例都會失敗","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"信號也可以異步發送:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":2,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"會在到達拋出信號事件後決定哪些處理器是激活的","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":2,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"對這些激活的處理器,會保存一個異步提醒消息(任務),併發送給","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"jobExecutor","attrs":{}}]}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"圖形標記","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"中間信號觸發事件顯示爲普通","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"中間事件","attrs":{}},{"type":"text","text":"(圓圈套圓圈),內部又一個信號小圖標,信號圖標是黑色的(有填充),表示觸發的意思","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/bc/bc41b1d68db6af8c3b57d57285052cfa.png","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"XML內容","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"消息中間事件定義爲標準","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"中間觸發事件.","attrs":{}},{"type":"text","text":" 指定類型的子元素是","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"signalEventDefinition","attrs":{}},{"type":"text","text":"元素","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n \n\n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"異步信號事件如下:","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n \n\n","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":4},"content":[{"type":"text","text":"補償中間觸發事件","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"描述","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"用來觸發補償","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"觸發補償:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"補償可以由","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"特定節點或包含補償事件的作用域","attrs":{}},{"type":"text","text":"觸發","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"補償是通過分配給","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"節點的補償處理器","attrs":{}},{"type":"text","text":"來完成的","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":2,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"當補償由節點觸發,對應的補償處理器會根據節點成功完成的次數執行相同次數","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":2,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"如果補償由當前作用域觸發,當前作用域的所有節點都會執行補償,也包含併發分支","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":2,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"補償的觸發是繼承式的:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":3,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"如果執行補償的節點是子流程,補償會作用到子流程中包含的所有節點","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":3,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"如果子流程是內嵌節點,補償會遞歸觸發","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":3,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"補償不會傳播到流程的上層","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":3,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"如果補償在子流程中觸發,不會傳播到子流程範圍外","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":3,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"bpmn規範定義,由節點觸發的流程只會作用到子流程同一級別","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":2,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"activiti的補償執行次序與流程執行順序相反:","attrs":{}},{"type":"text","text":" 最後完成的節點會最先執行補償","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":2,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"補償中間觸發事件可以用來補償成功完成的事務性子流程","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"==","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"注意:","attrs":{}},{"type":"text","text":"==","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"如果補償被一個包含子流程的作用域觸發,子流程還包含了關聯補償處理器的節點, 如果它已經成功完成了,補償只會傳播到子流程","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"如果子流程中的節點也完成了,並關聯了補償處理器,如果子流程包含的這些節點還沒有完成,就不會執行補償處理器","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/53/5378e72d6c0b0d2e579edfcfb99a52fb.png","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"這個流程中,我們有兩個併發分支,一個分支是內嵌子流程,一個是使用信用卡節點.假設兩個分支都啓動了,第一個分支等待用戶完成審覈預定任務.第二個分支執行使用信用卡節點, 併發生了一個錯誤,這導致取消預定事件,並觸發補償.這時,併發子流程還沒有結束,意味着補償事件不會傳播給子流程, 所以取消旅店預定這個補償處理器不會執行.如果用戶任務(就是內嵌子流程)在取消預定之前完成了,補償就會傳播給內嵌子流程","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"流程變量:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"當補償內嵌子流程時,用來執行補償處理器的分支可以訪問子流程的本地流程實例,因爲這時是子流程完成的分支","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":1,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"爲了實現這個功能,流程變量的快照會分配給分支(爲執行子流程而創建的分支)有以下限制條件:","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":2,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"補償處理器無法訪問子流程內部創建的,添加到同步分支的變量","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":2,"number":0,"align":null,"origin":null},"content":[{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"分配給分支的流程變量在繼承關係上層的","attrs":{}},{"type":"text","text":"(分配給流程實例的流程變量沒有包含在快照中):補償觸發時,補償處理器通過它們所在的地方訪問這些流程變量","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":2,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"變量快照只用於內嵌子流程,不適用其他節點","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"text"},"content":[{"type":"text","text":" 已知限制:\n 1. waitForCompletion=\"false\"還不支持。當補償使用中間觸發補償事件觸發時， 事件沒有等待，在補償成功結束後\n 2. 補償自己由併發分支執行。併發分支的執行順序與被補償的節點完成次序相反。 未來activiti可能支持選項來順序執行補償\n 3. 補償不會傳播給callActivity調用的子流程實例\n","attrs":{}}]},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"圖形標記","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"中間補償觸發事件顯示爲標準","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"中間事件","attrs":{}},{"type":"text","text":"(圓圈套圓圈),內部是一個補償小圖標.補償圖標是黑色的(有填充),表示觸發的意思","attrs":{}}]}]},{"type":"listitem","attrs":{"listStyle":"none"},"content":[{"type":"image","attrs":{"src":"https://static001.geekbang.org/infoq/15/15c8af9a4014ee0d146be6840cdc7a9a.png","alt":null,"title":null,"style":null,"href":null,"fromPaste":false,"pastePass":false}}]}],"attrs":{}},{"type":"heading","attrs":{"align":null,"level":5},"content":[{"type":"text","text":"XML內容","attrs":{}}]},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"補償中間事件定義爲普通的","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"中間觸發事件.","attrs":{}},{"type":"text","text":" 對應類型的子元素是","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"compensateEventDefinition","attrs":{}},{"type":"text","text":"元素","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n \n\n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"bulletedlist","content":[{"type":"listitem","attrs":{"listStyle":null},"content":[{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null},"content":[{"type":"text","text":"可選參數","attrs":{}},{"type":"text","marks":[{"type":"strong","attrs":{}}],"text":"activityRef","attrs":{}},{"type":"text","text":"可以用來觸發特定作用域/節點的補償","attrs":{}}]}]}],"attrs":{}},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}},{"type":"codeblock","attrs":{"lang":"xml"},"content":[{"type":"text","text":"\n \n\n","attrs":{}}]},{"type":"paragraph","attrs":{"indent":0,"number":0,"align":null,"origin":null}}]}