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Problem with imported model when referencing Xbase and JavaVMTypes models [message #878779]

Tue, 29 May 2012 23:11

Filip Krikava

Messages: 45
Registered: January 2012

Member

Hi,

When I use generated model everything works fine, but when I try to use imported model (which is the copy of the generated one) it does not work. To be concrete I created a very simple grammar:

grammar test.DSL2 with org.eclipse.xtext.xbase.Xbase

generate dSL2 "http[:]//www.DSL2.test"

System returns System:
	{System}
	'System'
	'{'
		('types' '(' types+=JvmTypeReference ( "," types+=JvmTypeReference)* ')' )?
    '}';

This works as expected, but when I changed it to:

import "platform:/resource/test.model/model/model.ecore"

where the model.{ecore, genmodel} are the same as the generated one, then during the MW2 execution I get:

1272 [main] ERROR ipse.xtext.generator.LanguageConfig  - [TransformationDiagnostic: null:10 Cannot find compatible feature types in sealed EClass System from imported package http[:]//model.me/model: The existing reference 'types' has an incompatible type 'JvmTypeReference'. The expected type is 'JvmTypeReference' [org.eclipse.xtext.common.types.JvmTypeReference]. (ErrorCode: CannotCreateTypeInSealedMetamodel), TransformationDiagnostic: null:10 Cannot find compatible feature types in sealed EClass System from imported package http[:]//model.me/model: The existing reference 'types' has an incompatible type 'JvmTypeReference'. The expected type is 'JvmTypeReference' [org.eclipse.xtext.common.types.JvmTypeReference]. (ErrorCode: CannotCreateTypeInSealedMetamodel)]
1275 [main] ERROR mf.mwe2.launch.runtime.Mwe2Launcher  - Problems instantiating module test.DSL: java.lang.reflect.InvocationTargetException
java.lang.RuntimeException: Problems instantiating module test.DSL: java.lang.reflect.InvocationTargetException
	at org.eclipse.emf.mwe2.launch.runtime.Mwe2Runner.run(Mwe2Runner.java:90)
	at org.eclipse.emf.mwe2.launch.runtime.Mwe2Runner.run(Mwe2Runner.java:73)
	at org.eclipse.emf.mwe2.launch.runtime.Mwe2Runner.run(Mwe2Runner.java:64)
	at org.eclipse.emf.mwe2.launch.runtime.Mwe2Runner.run(Mwe2Runner.java:55)
	at org.eclipse.emf.mwe2.launch.runtime.Mwe2Launcher.run(Mwe2Launcher.java:74)
	at org.eclipse.emf.mwe2.launch.runtime.Mwe2Launcher.main(Mwe2Launcher.java:35)
Caused by: org.eclipse.emf.common.util.WrappedException: java.lang.reflect.InvocationTargetException
	at org.eclipse.emf.mwe2.language.factory.SettingProviderImpl$1$1.setValue(SettingProviderImpl.java:56)
	at org.eclipse.emf.mwe2.language.factory.Mwe2ExecutionEngine.internalApplyAssignments(Mwe2ExecutionEngine.java:143)
	at org.eclipse.emf.mwe2.language.factory.Mwe2ExecutionEngine.inCase(Mwe2ExecutionEngine.java:114)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.eclipse.xtext.util.PolymorphicDispatcher.invoke(PolymorphicDispatcher.java:291)
	at org.eclipse.emf.mwe2.language.factory.Mwe2ExecutionEngine.internalSwitch(Mwe2ExecutionEngine.java:66)
	at org.eclipse.emf.mwe2.language.factory.Mwe2ExecutionEngine.internalApplyAssignments(Mwe2ExecutionEngine.java:142)
	at org.eclipse.emf.mwe2.language.factory.Mwe2ExecutionEngine.inCase(Mwe2ExecutionEngine.java:114)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.eclipse.xtext.util.PolymorphicDispatcher.invoke(PolymorphicDispatcher.java:291)
	at org.eclipse.emf.mwe2.language.factory.Mwe2ExecutionEngine.internalSwitch(Mwe2ExecutionEngine.java:66)
	at org.eclipse.emf.mwe2.language.factory.Mwe2ExecutionEngine.internalApplyAssignments(Mwe2ExecutionEngine.java:142)
	at org.eclipse.emf.mwe2.language.factory.Mwe2ExecutionEngine.inCase(Mwe2ExecutionEngine.java:114)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.eclipse.xtext.util.PolymorphicDispatcher.invoke(PolymorphicDispatcher.java:291)
	at org.eclipse.emf.mwe2.language.factory.Mwe2ExecutionEngine.internalSwitch(Mwe2ExecutionEngine.java:66)
	at org.eclipse.emf.mwe2.language.factory.Mwe2ExecutionEngine.inCase(Mwe2ExecutionEngine.java:80)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.eclipse.xtext.util.PolymorphicDispatcher.invoke(PolymorphicDispatcher.java:291)
	at org.eclipse.emf.mwe2.language.factory.Mwe2ExecutionEngine.internalSwitch(Mwe2ExecutionEngine.java:66)
	at org.eclipse.emf.mwe2.language.factory.Mwe2ExecutionEngine.create(Mwe2ExecutionEngine.java:62)
	at org.eclipse.emf.mwe2.launch.runtime.Mwe2Runner.run(Mwe2Runner.java:88)
	... 5 more
Caused by: java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)
	at org.eclipse.emf.mwe2.language.factory.SettingProviderImpl$1$1.setValue(SettingProviderImpl.java:54)
	... 38 more
Caused by: java.lang.IllegalStateException: Problem parsing 'classpath:/test/DSL.xtext':[TransformationDiagnostic: null:10 Cannot find compatible feature types in sealed EClass System from imported package http[:]//model.me/model: The existing reference 'types' has an incompatible type 'JvmTypeReference'. The expected type is 'JvmTypeReference' [org.eclipse.xtext.common.types.JvmTypeReference]. (ErrorCode: CannotCreateTypeInSealedMetamodel), TransformationDiagnostic: null:10 Cannot find compatible feature types in sealed EClass System from imported package http[:]//model.me/model: The existing reference 'types' has an incompatible type 'JvmTypeReference'. The expected type is 'JvmTypeReference' [org.eclipse.xtext.common.types.JvmTypeReference]. (ErrorCode: CannotCreateTypeInSealedMetamodel)]
	at org.eclipse.xtext.generator.LanguageConfig.setUri(LanguageConfig.java:185)
	... 43 more

The relevant message is: The existing reference 'types' has an incompatible type 'JvmTypeReference'. The expected type is 'JvmTypeReference' [org.eclipse.xtext.common.types.JvmTypeReference]

I would say they are actually the same. Here is the relevant part form the model.ecore file:

 <eClassifiers xsi:type="ecore:EClass" name="System">
    <eStructuralFeatures xsi:type="ecore:EReference" name="types" upperBound="-1"
        eType="ecore:EClass ../../org.eclipse.xtext.common.types/model/JavaVMTypes.ecore#//JvmTypeReference"
        containment="true"/>
  </eClassifiers>

Does anybody know where the problem might be?

Thanks a lot for help!

In the attachment I created a two xtext projects test.dsl (imported model) and test.dsl2 (generated model).