| [Xpand] Multiple meta models and ClassCastException [message #551691] |
Mon, 09 August 2010 03:41  |
Eclipse User |
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Originally posted by: till.tillamma.de
Hello,
I'm trying to combine multiple meta models into one MWE+Xpand step. So
far I managed to get no compile errors. But when running the code I get
a ClassCastException where the "FactoryImpl" of meta model A is being
casted into the "Factory" interface of meta model B.
I call the workflow using the WorkflowRunner from within an RCP.
The Exception is invoked during the prepare-step of the WorkflowRunner.
Should I post some log output and/or code? If so, which parts of it? I
think it's a tiny thing I'm overseeing.
Thanks,
Till
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| Re: [Xpand] Multiple meta models and ClassCastException [message #551722 is a reply to message #551701] |
Mon, 09 August 2010 06:36  |
| Eclipse User |
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Originally posted by: till.tillamma.de
On 08/09/2010 10:56 AM, Darius Jockel wrote:
> Hello,
>
> Quote:
>> Should I post some log output and/or code? If so, which parts of it?
> of cause we need more information.
Thought so, but didn't want to make the post unnecessarily bulky.
> What kind of mtamodels do you use?
'.ecore's
> Is there any reference between Factory and FactoryImpl in your metamodel?
Nope, no reference between them.
> Can you past please the paste the errormessage?
Yes. (Log, template and component of the workflow pasted below)
Here is the log including the error message:
Aug 9, 2010 9:33:11 AM org.eclipse.emf.mwe.core.WorkflowRunner prepare
INFO:
------------------------------------------------------------ --------------------------
Aug 9, 2010 9:33:11 AM org.eclipse.emf.mwe.core.WorkflowRunner prepare
INFO: EMF Modeling Workflow Engine 1.0.0, Build v201006150535
Aug 9, 2010 9:33:11 AM org.eclipse.emf.mwe.core.WorkflowRunner prepare
INFO: (c) 2005-2009 openarchitectureware.org and contributors
Aug 9, 2010 9:33:11 AM org.eclipse.emf.mwe.core.WorkflowRunner prepare
INFO:
------------------------------------------------------------ --------------------------
Aug 9, 2010 9:33:11 AM org.eclipse.emf.mwe.core.WorkflowRunner prepare
INFO: running workflow: utilityGenerationWorkflow.oaw
Aug 9, 2010 9:33:11 AM org.eclipse.emf.mwe.core.WorkflowRunner prepare
INFO:
!SESSION 2010-08-09 09:32:51.551
-----------------------------------------------
eclipse.buildId=unknown
java.version=1.6.0_20
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=linux, ARCH=x86, WS=gtk, NL=en_US
Framework arguments: -product
de.uni_kassel.cn.planDesigner.ui.planDesignerProduct
Command-line arguments: -product
de.uni_kassel.cn.planDesigner.ui.planDesignerProduct -data
/home/till/Code/workspace/../runtime-cnplandesigner.product -dev
file:/home/till/Code/workspace/.metadata/.plugins/org.eclips e.pde.core/cnplandesigner.product/dev.properties
-os linux -ws gtk -arch x86 -consoleLog -clean
!ENTRY org.eclipse.emf.ecore 2 0 2010-08-09 09:33:11.670
!MESSAGE de.uni_kassel.cn.alica.impl.AlicaFactoryImpl cannot be cast to
de.uni_kassel.cn.planDesigner.translator.translator.Translat orFactory
!STACK 0
java.lang.ClassCastException:
de.uni_kassel.cn.alica.impl.AlicaFactoryImpl cannot be cast to
de.uni_kassel.cn.planDesigner.translator.translator.Translat orFactory
at
de.uni_kassel.cn.planDesigner.translator.translator.impl.Tra nslatorFactoryImpl.init(TranslatorFactoryImpl.java:42)
at
de.uni_kassel.cn.planDesigner.translator.translator.Translat orFactory. <clinit>(TranslatorFactory.java:27)
at
de.uni_kassel.cn.planDesigner.translator.translator.impl.Tra nslatorPackageImpl. <init>(TranslatorPackageImpl.java:71)
at
de.uni_kassel.cn.planDesigner.translator.translator.impl.Tra nslatorPackageImpl.init(TranslatorPackageImpl.java:98)
at
de.uni_kassel.cn.planDesigner.translator.translator.Translat orPackage. <clinit>(TranslatorPackage.java:62)
at sun.misc.Unsafe.ensureClassInitialized(Native Method)
at
sun.reflect.UnsafeFieldAccessorFactory.newFieldAccessor(Unsa feFieldAccessorFactory.java:25)
at
sun.reflect.ReflectionFactory.newFieldAccessor(ReflectionFac tory.java:122)
at java.lang.reflect.Field.acquireFieldAccessor(Field.java:918)
at java.lang.reflect.Field.getFieldAccessor(Field.java:899)
at java.lang.reflect.Field.get(Field.java:358)
at
org.eclipse.xtend.typesystem.emf.EcoreUtil2.getEPackageByCla ssName(EcoreUtil2.java:177)
at
org.eclipse.xtend.typesystem.emf.EmfMetaModel.setMetaModelPa ckage(EmfMetaModel.java:46)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAcce ssorImpl.java:39)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMe thodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at
org.eclipse.emf.mwe.internal.core.ast.util.InjectorSimple.se tValue(InjectorSimple.java:33)
at
org.eclipse.emf.mwe.internal.core.ast.util.VisitorCreator.vi sitSimpleParamAST(VisitorCreator.java:203)
at
org.eclipse.emf.mwe.internal.core.ast.util.VisitorBase.visit (VisitorBase.java:49)
at
org.eclipse.emf.mwe.internal.core.ast.AbstractASTBase.accept (AbstractASTBase.java:44)
at
org.eclipse.emf.mwe.internal.core.ast.util.VisitorCreator.cr eateBean(VisitorCreator.java:157)
at
org.eclipse.emf.mwe.internal.core.ast.util.VisitorCreator.vi sitComponentAST(VisitorCreator.java:118)
at
org.eclipse.emf.mwe.internal.core.ast.util.VisitorBase.visit (VisitorBase.java:37)
at
org.eclipse.emf.mwe.internal.core.ast.AbstractASTBase.accept (AbstractASTBase.java:44)
at
org.eclipse.emf.mwe.internal.core.ast.util.VisitorCreator.cr eateBean(VisitorCreator.java:157)
at
org.eclipse.emf.mwe.internal.core.ast.util.VisitorCreator.vi sitComponentAST(VisitorCreator.java:118)
at
org.eclipse.emf.mwe.internal.core.ast.util.VisitorBase.visit (VisitorBase.java:37)
at
org.eclipse.emf.mwe.internal.core.ast.AbstractASTBase.accept (AbstractASTBase.java:44)
at
org.eclipse.emf.mwe.internal.core.ast.util.VisitorCreator.cr eateBean(VisitorCreator.java:157)
at
org.eclipse.emf.mwe.internal.core.ast.util.VisitorCreator.vi sitComponentAST(VisitorCreator.java:118)
at
org.eclipse.emf.mwe.internal.core.ast.util.VisitorBase.visit (VisitorBase.java:37)
at
org.eclipse.emf.mwe.internal.core.ast.AbstractASTBase.accept (AbstractASTBase.java:44)
at
org.eclipse.emf.mwe.internal.core.ast.util.WorkflowFactory.p arseInitAndCreate(WorkflowFactory.java:74)
at
org.eclipse.emf.mwe.internal.core.ast.util.WorkflowFactory.p arseInitAndCreate(WorkflowFactory.java:52)
at org.eclipse.emf.mwe.core.WorkflowRunner.prepare(WorkflowRunn er.java:332)
at org.eclipse.emf.mwe.core.WorkflowRunner.run(WorkflowRunner.j ava:290)
at
de.uni_kassel.cn.planDesigner.codegeneration.commands.Genera teCSharpUtilitiesCommand$GenerateCodeJob.runInWorkspace(Gene rateCSharpUtilitiesCommand.java:130)
at
org.eclipse.core.internal.resources.InternalWorkspaceJob.run (InternalWorkspaceJob.java:38)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
Aug 9, 2010 9:33:11 AM
org.eclipse.emf.mwe.core.container.CompositeComponent internalInvoke
INFO: Generator(generator): generating
'de::uni_kassel::cn::planDesigner::codegeneration::templates ::UtilitySummand::Root
FOR plan' => /home/till/Code/runtime-cnplandesigner.product/test/generate d/
Aug 9, 2010 9:33:12 AM org.eclipse.emf.mwe.core.WorkflowRunner
executeWorkflow
INFO: workflow completed in 298ms!
And the template:
«IMPORT alica»
«EXTENSION
de::uni_kassel::cn::planDesigner::codegeneration::extensions ::Java»
«DEFINE Root FOR alica::UtilityRepository»
«ENDDEFINE»
And the component from the workflow ("metaModelPackage" properties are
filled in a java class and given as an argument to the WorkflowRunner
constructor):
<component id="generator" class="org.eclipse.xpand2.Generator"
skipOnErrors="true">
<fileEncoding value="ISO-8859-1"/>
<!-- ALICA meta model -->
<metaModel id="mm" class="org.eclipse.xtend.typesystem.emf.EmfMetaModel">
<metaModelPackage value="${metaModelPackage}"/>
<!--
<metaModelFile value="${metaModelFile}" />
-->
</metaModel>
<!-- Translator meta model -->
<metaModel id="mm2" class="org.eclipse.xtend.typesystem.emf.EmfMetaModel">
<metaModelPackage value="${metaModelPackage2}"/>
<!--
<metaModelFile value="${metaModelFile2}" />
-->
</metaModel>
<outlet path="${srcGenPath}">
<!--<postprocessor
class="org.openarchitectureware.xpand2.output.JavaBeautifier "/>-->
</outlet>
<!--protected regions configuration -->
<prSrcPaths value="${srcGenPath}"/>
<prDefaultExcludes value="false"/>
<expand
value=" de::uni_kassel::cn::planDesigner::codegeneration::templates: :UtilitySummand::Root
FOR plan">
</expand>
</component>
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| Re: [Xpand] Multiple meta models and ClassCastException [message #552049 is a reply to message #551931] |
Tue, 10 August 2010 12:00 |
| Eclipse User |
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Originally posted by: till.tillamma.de
Hi,
first of all: I got it working (at least there are no Exceptions
anymore) - thanks for the help.
Now to answer your questions and ask some:
> this classes:
> de.uni_kassel.cn.planDesigner.translator.translator.impl.Tra
> nslatorFactoryImpl.init(TranslatorFactoryImpl.java:42)
> are part of your meta model and not manually implemented logic, right?
Yes, both factories were generated from the ecores.
>
> Maybe your metamodel is not correctly configured.
> Please take a look at your workflow configuration:
> <!-- Translator meta model -->
> <metaModel id="mm2" class="org.eclipse.xtend.typesystem.emf.EmfMetaModel">
> <metaModelPackage value="${metaModelPackage2}"/>
> <!--
> <metaModelFile value="${metaModelFile2}" />
> -->
> </metaModel>
>
> You have to refer the ecore file with metaModelFile OR
> you have to refer the generated Javabeans (generated from the ecore).
I referred to the meta model file (which was commented out before)
instead of the package... and voila no complaints any more.
> Please remove one of the configurations.
Not sure what you wanted. But it worked well with only one metaModel
definition.
-----
Now a question came to my mind:
Why does it work when both metaModels are configured via "metaModelFile"
but not via "metaModelPackage"?
-----
Thanks,
Till
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