| [GMF XPand templates ] targetDef.proceed() fails [message #504084] |
Thu, 17 December 2009 03:16  |
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Hi,
In Galileo, I want to use «targetDef.proceed()» to "call" the parent rule to proceed with the transformation, but I get an error when do the transformation:
Exception (Can't evaluate expression: retured value is OclInvalid:in aspects::xpt::diagram::commands::CreateNodeCommand, line 23) while generating code
Can't evaluate expression: retured value is OclInvalid:in aspects::xpt::diagram::commands::CreateNodeCommand, line 23
My template code is:
«AROUND CreateNodeCommand FOR gmfgen::GenNode-»
«EXPAND xpt::Common::copyright FOR getDiagram().editorGen-»
package «getDiagram().editCommandsPackageName»;
«EXPAND xpt::Common::generatedClassComment»
public class «createCommandClassName» extends org.eclipse.gmf.runtime.emf.type.core.commands.EditElementCommand {
«targetDef.proceed()»
«EXPAND getEClassToEdit-»
...
}
«ENDAROUND»
I asked in the M2T news, but they redirect me to GMF news. Could anybody help me please?
Thanks!!
Marc
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| Re: [GMF XPand templates ] targetDef.proceed() fails [message #504296 is a reply to message #504084] |
Fri, 18 December 2009 02:26  |
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Well, I know what's happening...
XPand is aspect oriented, so you can:
1. redefine a rule to run your oun definition instead of the parent one;
2. execute the parent rule with targetDef.proceed() and when finishes execute your code;
3. or execute your own code and then execute the parent code with targetDef.proceed().
What is not available, i to combine 2 and 3, executing first your code, then the code of the parent, then another time your code...
I'm understanding XPand step by step 
Marc
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