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Specialize an Element Type in the plugin.xml [message #493443]

Mon, 26 October 2009 09:40

Marc Mising name

Messages: 193
Registered: July 2009
Location: Valencia, Spain

Senior Member

Hello,

In the diagram plugin I have a Element Type that I want to specify in another plugin. The ElementType is the following:

<extension point="org.eclipse.gmf.runtime.emf.type.core.elementTypes">
  <metamodel nsURI="http://stp.eclipse.org/bpmn">
     <metamodelType
         id="es.cv.gvcase.mdt.bpmn.diagram.SequenceEdge_3001"
         name="Sequence Flow"
         kind="org.eclipse.gmf.runtime.emf.type.core.IHintedType"
         eclass="SequenceEdge"
         edithelper="es.cv.gvcase.mdt.bpmn.diagram.edit.helpers.SequenceEdgeEditHelper">
      <param name="semanticHint" value="3001"/>
    </metamodelType>
  </metamodel>
</extension>

If I copy & paste this ElementType in my other plugin (modifying the editHelper class to use the new one), Eclipse shows me an Error in the ErrorLog: "Error initializing element type "es.cv.gvcase.mdt.bpmn.diagram.SequenceEdge_3001": element type with same ID already exists. It will be ignored."

How can I specify an existent ElementType?

Thanks in advance.
Marc Gil

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Re: Specialize an Element Type in the plugin.xml [message #493445 is a reply to message #493443]

Mon, 26 October 2009 09:56

Aurélien Pupier

Messages: 637
Registered: July 2009
Location: Grenoble, FRANCE

Senior Member

Hi,

I think that you need to use a specialization type.
You can take a look at the point 10 of http://wiki.eclipse.org/index.php/GMF_Tips#Sharing_single_Ed itingDomain_instance_across_several_diagrams

Regards,

Aurelien Pupier

Aurélien Pupier - Red Hat
Senior Software Engineer in Fuse Tooling team

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Re: Specialize an Element Type in the plugin.xml [message #493447 is a reply to message #493445]

Mon, 26 October 2009 10:37

Marc Mising name

Messages: 193
Registered: July 2009
Location: Valencia, Spain

Senior Member

Thanks Aurelien,

I try to do this, but it doesn't work. I replace the following code:

<extension point="org.eclipse.gmf.runtime.emf.type.core.elementTypes">
  ...
  <metamodel nsURI="http://stp.eclipse.org/bpmn">
     <metamodelType
         id="es.cv.gvcase.mdt.bpmn.diagram.SequenceEdge_3001"
         name="Sequence Flow"
         kind="org.eclipse.gmf.runtime.emf.type.core.IHintedType"
         eclass="SequenceEdge"
         edithelper="es.cv.gvcase.mdt.bpmn.diagram.edit.helpers.SequenceEdgeEditHelper">
      <param name="semanticHint" value="3001"/>
    </metamodelType>
  </metamodel>
  ...
</extension>

with the following one:

<extension point="org.eclipse.gmf.runtime.emf.type.core.elementTypes">
  ...
  <metamodel nsURI="http://stp.eclipse.org/bpmn">
    <specializationType
      id="es.cv.gvcase.gva.configuration.bpmn.diagram.SequenceEdge_3001"
      name="Sequence Flow"
      kind="org.eclipse.gmf.runtime.emf.type.core.IHintedType"
      edithelperadvice="es.cv.gvcase.gvm.configuration.bpmn.diagram.edit.helpers.SequenceEdgeEditHelper">
      <specializes id="es.cv.gvcase.mdt.bpmn.diagram.SequenceEdge_3001"/>
      <param name="semanticHint" value="3001"/>
    </specializationType>
  </metamodel>
  ...
</extension>

The editHelperAdvice extends the old SequenceEdgeEditHelper and inherit from IEditHelperAdvice. It redefines the getConfigureCommand() method from AbstractEditHelper class.

They continue using the "old" editHelper. The elementType is not redefined... Sad

Of course, the second plugin has the main diagram plugin in the dependencies list...

Marc

[Updated on: Mon, 26 October 2009 10:45]

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Re: Specialize an Element Type in the plugin.xml [message #493512 is a reply to message #493447]

Mon, 26 October 2009 15:16

Marc Mising name

Messages: 193
Registered: July 2009
Location: Valencia, Spain

Senior Member

I get it!!!

<extension
            point="org.eclipse.gmf.runtime.emf.type.core.elementTypes">
         <metamodel
               nsURI="http://stp.eclipse.org/bpmn">
            <adviceBinding
                  class="es.cv.gvcase.gvm.configuration.bpmn.diagram.edit.helpers.SequenceEdgeEditHelper"
                  id="es.cv.gvcase.mdt.bpmn.diagram.SequenceEdge_3001"
                  inheritance="all"
                  typeId="es.cv.gvcase.mdt.bpmn.diagram.SequenceEdge_3001">
            </adviceBinding>
         </metamodel>
      </extension>

With an Advice Binding...

Thanks.
Marc

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