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Home » Modeling » TMF (Xtext) » IllegalStateException when parsing external linked ecore model while generating the Xtext classes(I linked an external ecore model to my Xtext file and get this error when I try to generate my model classes from the Xtext file.)

IllegalStateException when parsing external linked ecore model while generating the Xtext classes [message #891384]

Sun, 24 June 2012 17:29

Eclipse User

Hi All,

I linked an external ecore model to my Xtext file and get this error when I try to generate my model classes from the Xtext file.

I have attached my Xtext file because I can not post it through the forum system

Autocompletion works fine within the Xtext editor for the external classes but generation of the model classes fails with the following exception.

I replaced the : in the stacktrace to prevent the forum system from recognizing them as URL.

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|/org/xtext/example/mydsl/MyDsl.xtext':[XtextLinkingDiagnostic: null:5 Couldn't resolve reference to EPackage 'http|//www.emftext.org/java/classifiers'., XtextLinkingDiagnostic: null:6 Couldn't resolve reference to EPackage 'http|//www.emftext.org/java/types'., XtextLinkingDiagnostic: null:10 Couldn't resolve reference to EClassifier 'ConcreteClassifier'., XtextLinkingDiagnostic: null:19 Couldn't resolve reference to EClassifier 'TypedElement'., TransformationDiagnostic: null:10 Cannot find type for ' [classifiers::ConcreteClassifier]'. (ErrorCode: NoSuchTypeAvailable), TransformationDiagnostic: null:19 Cannot find type for ' [types::TypedElement]'. (ErrorCode: NoSuchTypeAvailable)]
	at org.eclipse.xtext.generator.LanguageConfig.setUri(LanguageConfig.java:131)
	... 43 more

What am I doing wrong?

Attachment: MyDsl.xtext
(Size: 0.45KB, Downloaded 115 times)

Re: IllegalStateException when parsing external linked ecore model while generating the Xtext classe [message #891387 is a reply to message #891384]

Sun, 24 June 2012 17:32

Eclipse User

How does your workflow look like? Do you register epackage and
genmodel?

Re: IllegalStateException when parsing external linked ecore model while generating the Xtext classe [message #891783 is a reply to message #891387]

Mon, 25 June 2012 18:14

Eclipse User

Christian Dietrich wrote on Sun, 24 June 2012 17:32

How does your workflow look like? Do you register epackage and
genmodel?

Thank you for your answer.
I didn't know about that, but when I add those lines to my workflow an other error did apear:

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)
	... 30 more
Caused by: org.eclipse.emf.ecore.resource.impl.ResourceSetImpl$1DiagnosticWrappedException: java.io.IOException: The path '/org.emftext.language.java/metamodel/java.genmodel' is unmapped
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.handleDemandLoadException(ResourceSetImpl.java:315)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoadHelper(ResourceSetImpl.java:274)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.getResource(ResourceSetImpl.java:397)
	at org.eclipse.emf.mwe.utils.GenModelHelper.registerGenModel(GenModelHelper.java:34)
	at org.eclipse.emf.mwe.utils.StandaloneSetup.addRegisterGenModelFile(StandaloneSetup.java:302)
	... 35 more
Caused by: java.io.IOException: The path '/org.emftext.language.java/metamodel/java.genmodel' is unmapped
	at org.eclipse.emf.ecore.resource.impl.PlatformResourceURIHandlerImpl.createInputStream(PlatformResourceURIHandlerImpl.java:462)
	at org.eclipse.emf.ecore.resource.impl.ExtensibleURIConverterImpl.createInputStream(ExtensibleURIConverterImpl.java:350)
	at org.eclipse.emf.ecore.resource.impl.ResourceImpl.load(ResourceImpl.java:1262)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoad(ResourceSetImpl.java:255)
	at org.eclipse.emf.ecore.resource.impl.ResourceSetImpl.demandLoadHelper(ResourceSetImpl.java:270)
	... 38 more

I attached the workflow file and the jar that contains the ecore model(I removed some class files for size reasons, hoping not removed to much).

Attachment: GenerateTest.mwe2
(Size: 4.39KB, Downloaded 197 times)
Attachment: org.emftext.language.java_1.4.0.v201206240005.jar
(Size: 295.96KB, Downloaded 200 times)

Re: IllegalStateException when parsing external linked ecore model while generating the Xtext classe [message #891797 is a reply to message #891783]

Mon, 25 June 2012 23:45

Eclipse User

Strange, sure you added the jar to the classpath of the xtext project (as required bundle)?

~Christian

Re: IllegalStateException when parsing external linked ecore model while generating the Xtext classe [message #891979 is a reply to message #891797]

Tue, 26 June 2012 14:15

Eclipse User

Christian Dietrich wrote on Mon, 25 June 2012 23:45

Strange, sure you added the jar to the classpath of the xtext project (as required bundle)?

~Christian

Yes, here an excerpt from the MANIFEST.MF

Require-Bundle: org.eclipse.xtext;bundle-version="2.0.1";visibility:=reexport,
 org.eclipse.xtext.xbase;bundle-version="2.1.0";resolution:=optional;visibility:=reexport,
 org.apache.log4j;bundle-version="1.2.15";visibility:=reexport,
 org.apache.commons.logging;bundle-version="1.0.4";resolution:=optional;visibility:=reexport,
 org.eclipse.xtext.generator;resolution:=optional,
 org.eclipse.emf.codegen.ecore;resolution:=optional,
 org.eclipse.emf.mwe.utils;resolution:=optional,
 org.eclipse.emf.mwe2.launch;resolution:=optional,
 org.eclipse.xtext.util,
 org.eclipse.emf.ecore,
 org.eclipse.emf.common,
 org.antlr.runtime,
 org.eclipse.xtext.common.types,
 org.emftext.commons.antlr3_4_0;bundle-version="3.4.0",
===================================================
 org.emftext.language.java;bundle-version="1.4.0",
===================================================
 org.emftext.language.java.resource.bcel;bundle-version="1.4.0",
 org.emftext.language.java.resource.java;bundle-version="1.4.0",
 org.emftext.language.java.resource;bundle-version="1.4.0",
 org.eclipse.emf.compare.match;bundle-version="1.2.2",
 org.eclipse.emf.compare;bundle-version="1.2.2",
 org.eclipse.emf.compare.diff;bundle-version="1.2.2",
 net.bigalk.jamopp.utils;bundle-version="1.0.0"

When I use the generated Xtext-editor for my grammar the code completion finds all classes from the referenced ecore model.

Re: IllegalStateException when parsing external linked ecore model while generating the Xtext classe [message #891997 is a reply to message #891979]

Tue, 26 June 2012 15:15

Eclipse User

Hi,

still cannot reproduce this

grammar org.xtext.example.mydsl3.MyDsl with org.eclipse.xtext.common.Terminals

generate myDsl "http://www.xtext.org/example/mydsl3/MyDsl"

import "http://www.emftext.org/java/classifiers" as java


Model:
	greetings+=Greeting*;
	
Greeting:
	'Hello' name=ID x=[java::Class]'!';

    bean = StandaloneSetup {
        scanClassPath = true
        platformUri = "${runtimeProject}/.."
        registerGenModelFile = "platform:/resource/org.emftext.language.java/metamodel/java.genmodel"
		// registerGenModelFile = "platform:/resource/org.eclipse.xtext.xbase/model/Xbase.genmodel"
        // registerGenModelFile = "platform:/resource/org.eclipse.xtext.common.types/model/JavaVMTypes.genmodel"
        // registerGeneratedEPackage = "org.eclipse.xtext.xbase.XbasePackage"
        registerGeneratedEPackage = "org.emftext.language.java.classifiers.ClassifiersPackage"
        registerGeneratedEPackage = "org.emftext.language.java.types.TypesPackage"
        // registerGeneratedEPackage = "org.eclipse.xtext.common.types.TypesPackage"
    }

Manifest-Version: 1.0
Bundle-ManifestVersion: 2
Bundle-Name: org.xtext.example.mydsl3
Bundle-Vendor: My Company
Bundle-Version: 1.0.0
Bundle-SymbolicName: org.xtext.example.mydsl3; singleton:=true
Bundle-ActivationPolicy: lazy
Require-Bundle: org.eclipse.xtext;bundle-version="2.1.0";visibility:=reexport,
 org.eclipse.xtext.xbase;bundle-version="2.1.0";resolution:=optional;visibility:=reexport,
 org.apache.log4j;bundle-version="1.2.15";visibility:=reexport,
 org.apache.commons.logging;bundle-version="1.0.4";resolution:=optional;visibility:=reexport,
 org.eclipse.xtext.generator;resolution:=optional,
 org.eclipse.emf.codegen.ecore;resolution:=optional,
 org.eclipse.emf.mwe.utils;resolution:=optional,
 org.eclipse.emf.mwe2.launch;resolution:=optional,
 org.emftext.language.java;bundle-version="1.3.0",
 org.eclipse.xtext.util,
 org.eclipse.emf.ecore,
 org.eclipse.emf.common,
 org.antlr.runtime,
 org.eclipse.xtext.common.types
Import-Package: org.apache.log4j,
 org.apache.commons.logging,
 org.eclipse.xtext.xbase.lib,
 org.eclipse.xtend2.lib
Bundle-RequiredExecutionEnvironment: J2SE-1.5
Export-Package: org.xtext.example.mydsl3,
 org.xtext.example.mydsl3.services,
 org.xtext.example.mydsl3.myDsl,
 org.xtext.example.mydsl3.myDsl.impl,
 org.xtext.example.mydsl3.myDsl.util,
 org.xtext.example.mydsl3.serializer,
 org.xtext.example.mydsl3.parser.antlr,
 org.xtext.example.mydsl3.parser.antlr.internal,
 org.xtext.example.mydsl3.validation,
 org.xtext.example.mydsl3.scoping,
 org.xtext.example.mydsl3.generator,
 org.xtext.example.mydsl3.formatting

Re: IllegalStateException when parsing external linked ecore model while generating the Xtext classe [message #892029 is a reply to message #891997]

Tue, 26 June 2012 17:53

Eclipse User

Christian Dietrich wrote on Tue, 26 June 2012 15:15

Hi,

still cannot reproduce this

Yes I checked the bundles list and the package registration and I cannot reproduce the error either. But I can produce a new error. This error occurs only if
an external model is actually referenced. The error does not occur if the external model is only declared (import, registration) but no actual reference is used in the Xtext file.
If you comment out the line 12 from the Xtext file the error disappears.

Best Regards
Olaf

Attachment: GenerateJaMoPPFilter.log
(Size: 8.54KB, Downloaded 285 times)
Attachment: GenerateJaMoPPFilter.mwe2
(Size: 4.58KB, Downloaded 116 times)
Attachment: JaMoPPFilter.xtext
(Size: 0.33KB, Downloaded 191 times)
Attachment: MANIFEST.MF
(Size: 1.45KB, Downloaded 159 times)

Re: IllegalStateException when parsing external linked ecore model while generating the Xtext classe [message #892122 is a reply to message #892029]

Wed, 27 June 2012 03:23

Eclipse User

sorry still cannot reproduce.

Re: IllegalStateException when parsing external linked ecore model while generating the Xtext classe [message #892349 is a reply to message #892122]

Wed, 27 June 2012 16:38

Eclipse User

Christian Dietrich wrote on Wed, 27 June 2012 03:23

sorry still cannot reproduce.

I tried again:

1. created a new example project.
2. added the reference to the ecore model to the grammar file.
3. added the jar dependency to the MANIFEST.MF
4. added a reference to an ecore model object in the grammar file.
5. added the registration of EPackage and model to the workflow file.
6. run the generator workflow.
7. got this strange NullPointerException

I zipped the whole project, hoping you can reproduce with that.
Thank you for helping me.

Attachment: org.xtext.example.mydsl.zip
(Size: 1.42MB, Downloaded 184 times)
Attachment: GenerateMyDsl.log
(Size: 8.94KB, Downloaded 139 times)

Re: IllegalStateException when parsing external linked ecore model while generating the Xtext classe [message #892359 is a reply to message #892349]

Wed, 27 June 2012 17:23

Eclipse User

Hmm,

seems it has something to do with you using emftext 1.4 i am using 1.3

~Christian

Re: IllegalStateException when parsing external linked ecore model while generating the Xtext classe [message #892361 is a reply to message #892359]

Wed, 27 June 2012 17:37

Eclipse User

P.S: where do i get org.emftext.language.java in version 1.4 from?

Re: IllegalStateException when parsing external linked ecore model while generating the Xtext classe [message #892366 is a reply to message #892122]

Wed, 27 June 2012 18:23

Eclipse User

Christian Dietrich wrote on Wed, 27 June 2012 03:23

sorry still cannot reproduce.

Hi Christian,

it seems to be an indigo problem. In the todays Juno release I cannot reproduce the error. I will move on to Juno.

Re: IllegalStateException when parsing external linked ecore model while generating the Xtext classe [message #892525 is a reply to message #892361]

Thu, 28 June 2012 10:29

Eclipse User

Christian Dietrich wrote on Wed, 27 June 2012 17:37

P.S: where do i get org.emftext.language.java in version 1.4 from?

I used the following update-site:

http[colon]//www.emftext.org/update_trunk

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