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体验新版 GitCode,发现更多精彩内容 >>
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f7cbea60
编写于
2月 24, 2012
作者:
M
meyerd
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电子邮件补丁
差异文件
adding section on compensation handlers
上级
91a01597
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-2
userguide/src/en/chapters/ch07-BPMN.xml
userguide/src/en/chapters/ch07-BPMN.xml
+48
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未找到文件。
userguide/src/en/chapters/ch07-BPMN.xml
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f7cbea60
...
...
@@ -5216,8 +5216,54 @@ public class MyTaskCreateListener implements TaskListener {
</section>
</section>
</section>
<section
id=
"bpmnCompensationHandlers"
>
<title>
Compensation Handlers
</title>
<section
id=
"bpmnCompensationHandlerDescription"
>
<title>
Description
</title>
<para>
If an activity is used for compensating the effects of another activity, it can be declared to be a compensation handler.
Compensation handlers are not contained in normal flow and are only executed when a compensation event is thrown.
</para>
<para>
Compensation handlers must not have incoming or outgoing sequence flows.
</para>
<para>
A compensation handler must be associated with a compensation boundary event using a directed association.
</para>
</section>
<section
id=
"bpmnCompensationHandlerGraphicalNotation"
>
<title>
Graphical notation
</title>
<para>
If an activity is a compensation handler, the compensation event icon is displayed in the center bottom area. The following
excerpt from a process diagram shows a service task with an attached compensation boundary event which is associated to a
compensation handler. Notice the compensation handler icon in the bottom canter area of the "cancel hotel reservation" service task
<mediaobject><imageobject><imagedata
align=
"center"
fileref=
"images/bpmn.boundary.compensation.event.png"
/></imageobject></mediaobject>
</para>
</section>
<section
id=
"bpmnCompensationHandlerXml"
>
<title>
Xml representation
</title>
In order to declare an activity to be a compensation handler, we need to set the attribute
<code>
isForCompensation
</code>
to
<code>
true
</code>
:
<programlisting>
<
serviceTask id=
"
undoBookHotel
"
isForCompensation=
"
true
"
activiti:class=
"
...
">
<
/serviceTask
>
</programlisting>
</section>
</section>
</section>
<!--
////////////////////////////////////////////////////////////////////////////////////////////////////////////
...
...
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