我的问题非常复杂,我不知道如何解决这个问题。所以我试着解释一下:我正在使用连接器(你可以在下面的代码xml输入中看到)。作为源我有元素“ownBehavior”的属性(xmi:id),它是元素“子组”的子元素,并且元素“子组”在其他元素“组/节点”中有引用,我需要得到该元素组的属性。
XML输入示例:
<packagedElement>
<group xmi:type="ActivityPartition" xmi:id="EAID_LIFELINE_1" name="Course manager">
<node xmi:idref="EAID_SUBGROUP_1"/>
</group>
<subgroup xmi:type="LoopNode" xmi:id="EAID_SUBGROUP_1" name="Loop Node">
<ownedBehavior xmi:type="Activity" xmi:id="EAID_ACTIVITY_1" name="for each course"/>
<ownedBehavior xmi:type="Activity" xmi:id="EAID_ACTIVITY_2" name="getCourse"/>
<containedEdge xmi:type="ControlFlow" xmi:id="EAID_CONNECTOR1" source="EAID_ACTIVITY_2" target="EAID_ACTIVITY_3"/>
</subgroup>
<group xmi:type="ActivityPartition" xmi:id="EAID_LIFELINE_2" name="Course">
<node xmi:idref="EAID_ACTIVITY_3"/>
</group>
<packagedElement xmi:type="Activity" xmi:id="EAID_ACTIVITY_3" name="selectCourse"/>
</packagedElement>
...
<connectors>
<connector xmi:idref="EAID_CONNECTOR1">
<source xmi:idref="EAID_ACTIVITY_2"/>
<target xmi:idref="EAID_ACTIVITY_3"/>
</connector>
</connectors>
...
但是在输出中我只想要具有正确源的连接器并且定位具有属性id(EAID_LIFELINE_1或EAID_LIFELINE_2)的某个元素“group”。所以xml输出应该是这样的:
<connectors>
<connector xmi:idref="EAID_CONNECTOR1">
<source xmi:idref="EAID_LIFELINE_1"/>
<target xmi:idref="EAID_LIFELINE_2"/>
</connector>
</connectors>
我尝试使用key函数和这个XSLT来做到这一点:
<xsl:key name="grp" match="group" use="node/@xmi:idref" />
<xsl:key name="subact" match="subgroup/ownedBehavior[@xmi:type='Activity']" use="@xmi:id" />
...
<connector xmi:idref="EAID_CONNECTOR{position()}">
<source xmi:idref="{key('grp',../(key('subact',@source))/@xmi:id)/@xmi:id}"/> <!--This is place where I don´t know how to write that code to get to group...-->
<target xmi:idref="{key('grp', @target)/@xmi:id}"/>
</connector>
目标是正确的,它显示我想要的东西(EAID_LIFELINE_2)但是对于源我不知道如何编写该xpath来获取生命线。你能帮助我吗?谢谢。
你只是缺少从ownedBehavior
升级到subgroup
以获得正确的xmi:id
。所以将你的connector
代码更改为
<connector xmi:idref="EAID_CONNECTOR{position()}">
<source xmi:idref="{key('grp',key('subact', @source)/../@xmi:id)/@xmi:id}"/>
<target xmi:idref="{key('grp', @target)/@xmi:id}"/>
</connector>
输出是:
<connector xmlns:xmi="urn:abc" xmi:idref="EAID_CONNECTOR6">
<source xmi:idref="EAID_LIFELINE_1"/>
<target xmi:idref="EAID_LIFELINE_2"/>
</connector>