Re: [m2eclipse-user] Problems with multimodule WTP project (sonatype tut)

Mon, 22 Sep 2008 08:01:08 -0700 

@Eugene

It seems that this problem is related to

http://archive.codehaus.org/lists/org.codehaus.m2eclipse.user/msg/[EMAIL 
PROTECTED]

Has there been a solution?
I now tried the original tutorial code ( http://www.sonatype.com/book/reference/multimodule.html# ) with File -> Import -> Maven Project. At first it works and everything is fine (this time with Deployment Descriptor 2.3 by the way). Once I restart, same problem -> simple-webapp project is broken. Is there maybe a plugin or eclipse module I am missing? But if so, why does the problem only occur when restarting eclipse? Sonatype?
Update: I downloaded a new eclipse and installed all the newest (non developer versions) plugins and tried again. Once I get it working and restart eclipse I get the NullPointer again. Anyone? 



!ENTRY org.eclipse.core.jobs 4 2 2008-09-22 16:54:45.734
!MESSAGE An internal error occurred during: "Initializing Java Tooling".
!STACK 0
java.lang.NullPointerException
at org.eclipse.jst.j2ee.internal.archive.JavaEEArchiveUtilities.isEJBArchive(JavaEEArchiveUtilities.java:687) at org.eclipse.jst.j2ee.internal.archive.JavaEEArchiveUtilities.refineForJavaEE(JavaEEArchiveUtilities.java:497) at org.eclipse.jst.j2ee.internal.archive.JavaEEArchiveUtilities.openArchive(JavaEEArchiveUtilities.java:304) at org.eclipse.jst.j2ee.internal.archive.JavaEEArchiveUtilities.openArchive(JavaEEArchiveUtilities.java:143) at org.eclipse.jst.j2ee.internal.componentcore.JavaEEBinaryComponentHelper$ArchiveCache.openArchive(JavaEEBinaryComponentHelper.java:461) at org.eclipse.jst.j2ee.internal.componentcore.JavaEEBinaryComponentHelper.openArchive(JavaEEBinaryComponentHelper.java:333) at org.eclipse.jst.j2ee.internal.componentcore.JavaEEBinaryComponentHelper.getUniqueArchive(JavaEEBinaryComponentHelper.java:322) at org.eclipse.jst.j2ee.internal.componentcore.JavaEEBinaryComponentHelper.getArchive(JavaEEBinaryComponentHelper.java:315) at org.eclipse.jst.j2ee.internal.componentcore.JavaEEBinaryComponentHelper.accessArchive(JavaEEBinaryComponentHelper.java:152) at org.eclipse.jst.j2ee.internal.project.J2EEProjectUtilities.readManifest(J2EEProjectUtilities.java:317) at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualArchiveComponent.getManifestClasspath(J2EEModuleVirtualArchiveComponent.java:45) at org.eclipse.jst.j2ee.internal.classpathdep.ClasspathDependencyVirtualComponent.getManifestClasspath(ClasspathDependencyVirtualComponent.java:75) at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualComponent.getManifestClasspath(J2EEModuleVirtualComponent.java:156) at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualComponent.getManifestReferences(J2EEModuleVirtualComponent.java:275) at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualComponent.getManifestReferences(J2EEModuleVirtualComponent.java:270) at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualArchiveComponent.getReferences(J2EEModuleVirtualArchiveComponent.java:36) at org.eclipse.jst.j2ee.internal.classpathdep.ClasspathDependencyVirtualComponent.getReferences(ClasspathDependencyVirtualComponent.java:68) at org.eclipse.jst.j2ee.internal.common.classpath.J2EEComponentClasspathContainer.update(J2EEComponentClasspathContainer.java:176) at org.eclipse.jst.j2ee.internal.common.classpath.J2EEComponentClasspathContainer.install(J2EEComponentClasspathContainer.java:308) at org.eclipse.jst.j2ee.internal.common.classpath.J2EEComponentClasspathInitializer.initialize(J2EEComponentClasspathInitializer.java:29) at org.eclipse.jdt.internal.core.JavaModelManager.initializeContainer(JavaModelManager.java:2371) at org.eclipse.jdt.internal.core.JavaModelManager$13.run(JavaModelManager.java:2301) at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1800) at org.eclipse.jdt.internal.core.JavaModelManager.initializeAllContainers(JavaModelManager.java:2317) at org.eclipse.jdt.internal.core.JavaModelManager.getClasspathContainer(JavaModelManager.java:1679) at org.eclipse.jdt.core.JavaCore.initializeAfterLoad(JavaCore.java:3398) at org.eclipse.jdt.internal.ui.InitializeAfterLoadJob$RealJob.run(InitializeAfterLoadJob.java:35) 
   at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
I got it working for the moment but it is very unstable. My procedure is to erase the eclipse files and use Update Project Configuration and hit F5 for refresh. The results vary. Sometimes I get only the source folders shown in eclipse, sometimes only the Deployment Descriptor and sometimes the project like it should appear but with a red cross at the project node. Unfortunately the Problems view does not show a corresponding error. I could "live"/work with that but if I restart eclipse I get the NullPointerException (this time during JavaTooling Initialization) and only the DeploymentDescriptor node is shown. By the way, unlike in the tutorial I use Deployment Descriptor version 2.5 instead of 2.3. Did anyone got the example (Chapter 6) working (stable) with tomcat under eclipse? If so, could you please give me the versions of your installation? 

Cheers Jan



Jan Schoppenhorst schrieb:

Hi,
I am following the tutorials in the sonatype Maven book http://www.sonatype.com/book (Thumbs up). Chapter 4 and 5 worked perfect under eclipse but when I try the project setup in chapter 6, which is basically the same as chapters 4 and 5 but in a multi module, eclipse starts to behave strangely. I am trying to run the tutorial under tomcat (6.0.16) where I get a ClassNotFoundError for the tutorial servlet classes (I cannot show it here because I cannot reproduce the error due to the following issue). With jetty from the console (like in the tutorial) it worked fine. After this, the simple-webapp submodule project is broken. When I try Update Project Configuration I get an error dialog showing the following message: 

An internal error occurred during: "Updating Maven Configuration".
java.lang.NullPointerException


And this is the stacktrace in the workspace log


!ENTRY org.eclipse.core.jobs 4 2 2008-09-22 09:23:23.002
!MESSAGE An internal error occurred during: "Updating Maven Configuration". 
!STACK 0
java.lang.NullPointerException
at org.eclipse.jst.j2ee.internal.archive.JavaEEArchiveUtilities.isEJBArchive(JavaEEArchiveUtilities.java:636) at org.eclipse.jst.j2ee.internal.archive.JavaEEArchiveUtilities.refineForJavaEE(JavaEEArchiveUtilities.java:446) at org.eclipse.jst.j2ee.internal.archive.JavaEEArchiveUtilities.openArchive(JavaEEArchiveUtilities.java:273) at org.eclipse.jst.j2ee.internal.archive.JavaEEArchiveUtilities.openArchive(JavaEEArchiveUtilities.java:121) at org.eclipse.jst.j2ee.internal.componentcore.JavaEEBinaryComponentHelper$ArchiveCache.openArchive(JavaEEBinaryComponentHelper.java:461) at org.eclipse.jst.j2ee.internal.componentcore.JavaEEBinaryComponentHelper.openArchive(JavaEEBinaryComponentHelper.java:333) at org.eclipse.jst.j2ee.internal.componentcore.JavaEEBinaryComponentHelper.getUniqueArchive(JavaEEBinaryComponentHelper.java:322) at org.eclipse.jst.j2ee.internal.componentcore.JavaEEBinaryComponentHelper.getArchive(JavaEEBinaryComponentHelper.java:315) at org.eclipse.jst.j2ee.internal.componentcore.JavaEEBinaryComponentHelper.accessArchive(JavaEEBinaryComponentHelper.java:152) at org.eclipse.jst.j2ee.internal.project.J2EEProjectUtilities.readManifest(J2EEProjectUtilities.java:317) at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualArchiveComponent.getManifestClasspath(J2EEModuleVirtualArchiveComponent.java:43) at org.eclipse.jst.j2ee.internal.classpathdep.ClasspathDependencyVirtualComponent.getManifestClasspath(ClasspathDependencyVirtualComponent.java:75) at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualComponent.getManifestClasspath(J2EEModuleVirtualComponent.java:156) at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualComponent.getManifestReferences(J2EEModuleVirtualComponent.java:275) at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualComponent.getManifestReferences(J2EEModuleVirtualComponent.java:270) at org.eclipse.jst.j2ee.componentcore.J2EEModuleVirtualArchiveComponent.getReferences(J2EEModuleVirtualArchiveComponent.java:34) at org.eclipse.jst.j2ee.internal.classpathdep.ClasspathDependencyVirtualComponent.getReferences(ClasspathDependencyVirtualComponent.java:68) at org.eclipse.jst.j2ee.internal.common.classpath.J2EEComponentClasspathContainer.update(J2EEComponentClasspathContainer.java:176) at org.eclipse.jst.j2ee.internal.common.classpath.J2EEComponentClasspathContainer.install(J2EEComponentClasspathContainer.java:308) at org.eclipse.jst.j2ee.internal.common.classpath.J2EEComponentClasspathInitializer.initialize(J2EEComponentClasspathInitializer.java:29) at org.eclipse.jdt.internal.core.JavaModelManager.initializeContainer(JavaModelManager.java:2371) at org.eclipse.jdt.internal.core.JavaModelManager.getClasspathContainer(JavaModelManager.java:1684) at org.eclipse.jdt.core.JavaCore.getClasspathContainer(JavaCore.java:2554) at org.eclipse.jdt.internal.core.JavaProject.resolveClasspath(JavaProject.java:2469) at org.eclipse.jdt.internal.core.ClasspathEntry.validateClasspath(ClasspathEntry.java:1290) at org.eclipse.jdt.internal.core.SetClasspathOperation.verify(SetClasspathOperation.java:87) at org.eclipse.jdt.internal.core.JavaModelOperation.runOperation(JavaModelOperation.java:764) at org.eclipse.jdt.internal.core.JavaProject.setRawClasspath(JavaProject.java:2815) at org.eclipse.jdt.internal.core.JavaProject.setRawClasspath(JavaProject.java:2846) at org.maven.ide.eclipse.jdt.internal.JavaProjectConfigurator.addMavenClasspathContainer(JavaProjectConfigurator.java:583) at org.maven.ide.eclipse.jdt.internal.JavaProjectConfigurator.configure(JavaProjectConfigurator.java:90) at org.maven.ide.eclipse.internal.project.ProjectConfigurationManager.updateProjectConfiguration(ProjectConfigurationManager.java:230) at org.maven.ide.eclipse.internal.project.ProjectConfigurationManager.updateProjectConfiguration(ProjectConfigurationManager.java:213) at org.maven.ide.eclipse.actions.UpdateSourcesAction$1.runInWorkspace(UpdateSourcesAction.java:72) at org.eclipse.core.internal.resources.InternalWorkspaceJob.run(InternalWorkspaceJob.java:38) 
   at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)
Deleting the eclipse files and hitting Update Project Configuration does not solve the problem. I am using Eclipse 3.4.0, WST 3.0.0 and m2eclipse 0.9.6. Does anyone has a clue? 

Cheers
Jan

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fn:Jan Schoppenhorst
n:Schoppenhorst;Jan
org:GDVmbH
adr;dom:;;Binger Str. 49-51;Ingelheim;;55218
email;internet:[EMAIL PROTECTED]
url:http://www.gdv.com
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