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Couldn't find resource on classpath [message #1432236] Fri, 26 September 2014 21:04 Go to next message
Erick Fonseca is currently offline Erick FonsecaFriend
Messages: 68
Registered: December 2011
Member
I'm having this problem with Xtext. I just installed Xtext 2.7.2 and tried the example Hello language. I ran the .mwe2 file as MWE2 Workflow, but got the following errors:

0    [main] WARN  pes.access.impl.DeclaredTypeFactory  - --- xtext.common.types ---------------------------------------------------
1    [main] WARN  pes.access.impl.DeclaredTypeFactory  - ASM library is not available. Falling back to java.lang.reflect API.
1    [main] WARN  pes.access.impl.DeclaredTypeFactory  - Please note that no information about compile time constants is available.
1    [main] WARN  pes.access.impl.DeclaredTypeFactory  - It's recommended to use org.objectweb.asm 5.0.1 or better.
1    [main] WARN  pes.access.impl.DeclaredTypeFactory  - --------------------------------------------------------------------------
759  [main] INFO  lipse.emf.mwe.utils.StandaloneSetup  - Registering platform uri 'D:\projectpath'
2794 [main] INFO  lipse.emf.mwe.utils.StandaloneSetup  - Adding generated EPackage 'org.eclipse.xtext.xbase.XbasePackage'
3019 [main] INFO  clipse.emf.mwe.utils.GenModelHelper  - Registered GenModel 'http://www.eclipse.org/Xtext/Xbase/XAnnotations' from 'platform:/resource/org.eclipse.xtext.xbase/model/Xbase.genmodel'
3022 [main] INFO  clipse.emf.mwe.utils.GenModelHelper  - Registered GenModel 'http://www.eclipse.org/xtext/xbase/Xtype' from 'platform:/resource/org.eclipse.xtext.xbase/model/Xbase.genmodel'
3042 [main] INFO  clipse.emf.mwe.utils.GenModelHelper  - Registered GenModel 'http://www.eclipse.org/xtext/xbase/Xbase' from 'platform:/resource/org.eclipse.xtext.xbase/model/Xbase.genmodel'
3042 [main] INFO  clipse.emf.mwe.utils.GenModelHelper  - Registered GenModel 'http://www.eclipse.org/xtext/common/JavaVMTypes' from 'platform:/resource/org.eclipse.xtext.common.types/model/JavaVMTypes.genmodel'
3212 [main] ERROR mf.mwe2.launch.runtime.Mwe2Launcher  - Problems instantiating module org.xtext.example.mydsl.GenerateMyDsl: java.lang.reflect.InvocationTargetException
java.lang.RuntimeException: Problems instantiating module org.xtext.example.mydsl.GenerateMyDsl: java.lang.reflect.InvocationTargetException
	at org.eclipse.emf.mwe2.launch.runtime.Mwe2Runner.run(Mwe2Runner.java:95)
	at org.eclipse.emf.mwe2.launch.runtime.Mwe2Runner.run(Mwe2Runner.java:62)
	at org.eclipse.emf.mwe2.launch.runtime.Mwe2Runner.run(Mwe2Runner.java:52)
	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(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	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(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	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(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	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(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	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:93)
	... 4 more
Caused by: java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.eclipse.emf.mwe2.language.factory.SettingProviderImpl$1$1.setValue(SettingProviderImpl.java:54)
	... 37 more
Caused by: org.eclipse.xtext.resource.ClasspathUriResolutionException: org.eclipse.xtext.resource.FileNotFoundOnClasspathException: Couldn't find resource on classpath. URI was 'classpath:/org/xtext/example/mydsl/MyDsl.xtext'
	at org.eclipse.xtext.resource.ClassloaderClasspathUriResolver.resolve(ClassloaderClasspathUriResolver.java:48)
	at org.eclipse.xtext.resource.XtextResourceSet.resolveClasspathURI(XtextResourceSet.java:185)
	at org.eclipse.xtext.resource.XtextResourceSet.access$0(XtextResourceSet.java:184)
	at org.eclipse.xtext.resource.XtextResourceSet$1.normalize(XtextResourceSet.java:248)
	at org.eclipse.xtext.resource.XtextResourceSet.getResource(XtextResourceSet.java:203)
	at org.eclipse.xtext.generator.LanguageConfig.setUri(LanguageConfig.java:228)
	... 42 more
Caused by: org.eclipse.xtext.resource.FileNotFoundOnClasspathException: Couldn't find resource on classpath. URI was 'classpath:/org/xtext/example/mydsl/MyDsl.xtext'
	at org.eclipse.xtext.resource.ClassloaderClasspathUriResolver.findResourceOnClasspath(ClassloaderClasspathUriResolver.java:60)
	at org.eclipse.xtext.resource.ClassloaderClasspathUriResolver.resolve(ClassloaderClasspathUriResolver.java:45)
	... 47 more


I didn't touch the code generated by the "New Xtext project" option, and the MyDsl.xtext is clearly there. What could be wrong?

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Re: Couldn't find resource on classpath [message #1433134 is a reply to message #1432236] Sun, 28 September 2014 08:26 Go to previous messageGo to next message
Christian Dietrich is currently offline Christian DietrichFriend
Messages: 14665
Registered: July 2009
Senior Member
does the project have a build path errors?

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: Couldn't find resource on classpath [message #1434050 is a reply to message #1433134] Mon, 29 September 2014 15:40 Go to previous messageGo to next message
Erick Fonseca is currently offline Erick FonsecaFriend
Messages: 68
Registered: December 2011
Member
No, everything seems ok. I checked the classpath file, it was correct.

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Re: Couldn't find resource on classpath [message #1434113 is a reply to message #1434050] Mon, 29 September 2014 17:36 Go to previous messageGo to next message
Christian Dietrich is currently offline Christian DietrichFriend
Messages: 14665
Registered: July 2009
Senior Member
did you double check that the xtext file was copied to the bin folder? do you have build automatically on?

Twitter : @chrdietrich
Blog : https://www.dietrich-it.de

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Re: Couldn't find resource on classpath [message #1434354 is a reply to message #1434113] Tue, 30 September 2014 01:49 Go to previous message
Erick Fonseca is currently offline Erick FonsecaFriend
Messages: 68
Registered: December 2011
Member
I didn't have automatically build on. I turned it on and it worked. Funny thing is that now it works even if I unset that option.

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