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Problems with Xtext and XBase in version 2.8.0.v201503090534 [message #1666026]

Wed, 11 March 2015 10:02

Eclipse User

Hello,

I am trying to develop a DSL using Xtext and Xbase. I would like to include some Java-like statements in my DSL. However, it seems that existing examples and tutorials do not work with Xtext Redistributable 2.8.0.v201503090534.

Here are two ways that I tried:

1- I created an example DSL using standard Xtext project, which is named MyDSL

2- I tried to add some XBase expressions, and added "with org.eclipse.xtext.xbase.Xbase" to my grammar, as it is expected. But just adding this is enough to get the following exception when I try to compile a program written in MyDSL: (MyDSLTester is the name of tester project)

1 [Worker-1] ERROR org.eclipse.xtext.builder.impl.XtextBuilder - Java Model Exception: Java Model Status [MyDSLTesterdoes not exist]
java.lang.RuntimeException: Java Model Exception: Java Model Status [SOM does not exist]
at org.eclipse.xtext.builder.JDTAwareSourceFolderProvider.getSourceFolders(JDTAwareSourceFolderProvider.java:36)
at org.eclipse.xtext.builder.EclipseOutputConfigurationProvider.createAndOverlayOutputConfiguration(EclipseOutputConfigurationProvider.java:153)
at org.eclipse.xtext.builder.EclipseOutputConfigurationProvider.getOutputConfigurations(EclipseOutputConfigurationProvider.java:110)
at org.eclipse.xtext.builder.BuilderParticipant.getOutputConfigurations(BuilderParticipant.java:583)
.....

3- The second way was to try to compile existing examples, from the book, using Xtext 2.8... I tried with the example "org.example.xbase.entities". But, when I try to generate XText artifacts, the java classes for grammar rules (e.g. Entity, Attribute, Operation) are not generated.

Can someone help me?
Thanks

Re: Problems with Xtext and XBase in version 2.8.0.v201503090534 [message #1666064 is a reply to message #1666026]

Wed, 11 March 2015 10:21

Eclipse User

Hi,

how does your model project look like? is it a java project? it will work with java projects only.

(3) i cannot answer without any traces/logs from the language generation

Re: Problems with Xtext and XBase in version 2.8.0.v201503090534 [message #1666103 is a reply to message #1666064]

Wed, 11 March 2015 10:44

Eclipse User

Hello

I try to build and work with the existing example of the book, which is on GitHub. The example of org.example.xbase.entity

When I compile it with Xtext 2.8.0.v201503090534, the folder org.example.xbase.entities.entities in /src-gen/ is empty. Probably, it has to do with workflow, etc. but unfortunately, I am not an expert on this Sad

The grammar and mwe2 files are attached to this message.
I get the following error when I try to save a program written in my DSL: (MyDSLTester is the name of tester project)

1 [Worker-5] ERROR org.eclipse.xtext.builder.impl.XtextBuilder - Java Model Exception: Java Model Status [MyDSLTester does not exist]
java.lang.RuntimeException: Java Model Exception: Java Model Status [MyDSLTester does not exist]
at org.eclipse.xtext.builder.JDTAwareSourceFolderProvider.getSourceFolders(JDTAwareSourceFolderProvider.java:36)
at org.eclipse.xtext.builder.EclipseOutputConfigurationProvider.createAndOverlayOutputConfiguration(EclipseOutputConfigurationProvider.java:153)
at org.eclipse.xtext.builder.EclipseOutputConfigurationProvider.getOutputConfigurations(EclipseOutputConfigurationProvider.java:110)
at org.eclipse.xtext.builder.BuilderParticipant.getOutputConfigurations(BuilderParticipant.java:583)
at org.eclipse.xtext.builder.BuilderParticipant.build(BuilderParticipant.java:204)
at org.eclipse.xtext.builder.impl.RegistryBuilderParticipant$DeferredBuilderParticipant.build(RegistryBuilderParticipant.java:161)
at org.eclipse.xtext.builder.impl.RegistryBuilderParticipant.build(RegistryBuilderParticipant.java:69)
at org.eclipse.xtext.builder.impl.XtextBuilder.doBuild(XtextBuilder.java:244)
at org.eclipse.xtext.builder.impl.XtextBuilder.fullBuild(XtextBuilder.java:272)
at org.eclipse.xtext.builder.impl.XtextBuilder.build(XtextBuilder.java:111)
at org.eclipse.core.internal.events.BuildManager$2.run(BuildManager.java:734)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:206)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:246)
at org.eclipse.core.internal.events.BuildManager$1.run(BuildManager.java:299)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.BuildManager.basicBuild(BuildManager.java:302)
at org.eclipse.core.internal.events.BuildManager.basicBuildLoop(BuildManager.java:358)
at org.eclipse.core.internal.events.BuildManager.build(BuildManager.java:381)
at org.eclipse.core.internal.events.AutoBuildJob.doBuild(AutoBuildJob.java:143)
at org.eclipse.core.internal.events.AutoBuildJob.run(AutoBuildJob.java:241)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:54)
Caused by: Java Model Exception: Java Model Status [MyDSLTester does not exist]
at org.eclipse.jdt.internal.core.JavaElement.newNotPresentException(JavaElement.java:556)
at org.eclipse.jdt.internal.core.JavaModelManager.getPerProjectInfoCheckExistence(JavaModelManager.java:2344)
at org.eclipse.jdt.internal.core.JavaProject.getPerProjectInfo(JavaProject.java:1909)
at org.eclipse.jdt.internal.core.JavaProject.getRawClasspath(JavaProject.java:1931)
at org.eclipse.xtext.builder.JDTAwareSourceFolderProvider.getSourceFolders(JDTAwareSourceFolderProvider.java:34)
... 21 more

Attachment: Entities.xtext
(Size: 0.59KB, Downloaded 109 times)
Attachment: GenerateEntities.mwe2
(Size: 4.60KB, Downloaded 119 times)

Re: Problems with Xtext and XBase in version 2.8.0.v201503090534 [message #1666160 is a reply to message #1666103]

Wed, 11 March 2015 11:11

Eclipse User

HI,

it is a problem of the project you create the .fileextension file in.
it has to be a java project.

Re: Problems with Xtext and XBase in version 2.8.0.v201503090534 [message #1666169 is a reply to message #1666160]

Wed, 11 March 2015 11:15

Eclipse User

Well your solution works with Xtext 2.7.3, but with 2.8.0 my problem is that the project does not compile correctly, it does not generate Java classes from the grammar. Any clue?

Thanks a lot.

[Updated on: Wed, 11 March 2015 11:18] by Moderator

Re: Problems with Xtext and XBase in version 2.8.0.v201503090534 [message #1666170 is a reply to message #1666169]

Wed, 11 March 2015 11:20

Eclipse User

Hi,

i dont know your jvm model inferrer. nor do i know the manifest of your model project

Re: Problems with Xtext and XBase in version 2.8.0.v201503090534 [message #1666189 is a reply to message #1666170]

Wed, 11 March 2015 11:26

Eclipse User

btw what is the stacktrace on grammar gen you get?

Re: Problems with Xtext and XBase in version 2.8.0.v201503090534 [message #1666190 is a reply to message #1666169]

Wed, 11 March 2015 11:26

Eclipse User