#370 org.dom4j.DocumentFactory cannot be cast to org.dom4j.DocumentFactory

[Christian Schmidt]

Hi,

after activating Checkstyle on an project I get the following exceptions. Checking Code is not longer possible. When I delete my Eclipse workspace an create a new one everything is fine until I restart Eclispe.

!ENTRY org.eclipse.core.resources 4 2 2014-11-11 12:29:38.150
!MESSAGE Problems occurred when invoking code from plug-in: "org.eclipse.core.resources".
!STACK 1
org.eclipse.core.runtime.CoreException: org.dom4j.DocumentFactory cannot be cast to org.dom4j.DocumentFactory Nested exception: org.dom4j.DocumentFactory cannot be cast to org.dom4j.DocumentFactory
at net.sf.eclipsecs.core.builder.CheckstyleBuilder.handleBuildSelection(CheckstyleBuilder.java:307)
at net.sf.eclipsecs.core.builder.CheckstyleBuilder.build(CheckstyleBuilder.java:171)
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)

See full Stack in "checkstyle_err.txt". Hope I choose the correct milestone. I am using the latest version of CheckstylePlugIn for Eclipse. (Eclipse Checkstyle Plugin 5.9.0.201410282234)

Thx

[Christian Schmidt]

Tested some other idea. After deleting the folders
"net.sf.eclipsecs.core" and "net.sf.eclipsecs.ui" in my workspace folder ".metadata.plugins" and restarting eclipse it seems to be working correctly now.

[Lars Koedderitzsch]

Thanks for the update.
The error itself seems to come from a weird classloading issue ("org.dom4j.DocumentFactory cannot be cast to org.dom4j.DocumentFactory"), though I have no idea what could cause this and why it would go away with a new workspace or when you deleted the metadata.

Sometimes after a plugin upgrade when strange things happen within eclipse using the -clean command line option when starting eclipse also works.

Kind regards,
Lars

[Christian Schmidt]

Thanks Lars for your answer.
Think I will test the -clean option when I start eclipse the next time.
If I could find out some more information I will contact you.

Kind regards.
Christian

2014-11-11 15:17 GMT+01:00 Lars Koedderitzsch lkoe@users.sf.net:

Thanks for the update.
The error itself seems to come from a weird classloading issue
("org.dom4j.DocumentFactory cannot be cast to org.dom4j.DocumentFactory"),
though I have no idea what could cause this and why it would go away with a
new workspace or when you deleted the metadata.

Sometimes after a plugin upgrade when strange things happen within eclipse
using the -clean command line option when starting eclipse also works.

Kind regards,
Lars

---

• [bugs:#370] http://sourceforge.net/p/eclipse-cs/bugs/370
  org.dom4j.DocumentFactory cannot be cast to org.dom4j.DocumentFactory*

Status: open
Group: 5.8.0
Created: Tue Nov 11, 2014 11:37 AM UTC by Christian Schmidt
Last Updated: Tue Nov 11, 2014 11:51 AM UTC
Owner: nobody

Hi,

after activating Checkstyle on an project I get the following exceptions.
Checking Code is not longer possible. When I delete my Eclipse workspace an
create a new one everything is fine until I restart Eclispe.

!ENTRY org.eclipse.core.resources 4 2 2014-11-11 12:29:38.150
!MESSAGE Problems occurred when invoking code from plug-in:
"org.eclipse.core.resources".
!STACK 1
org.eclipse.core.runtime.CoreException: org.dom4j.DocumentFactory cannot
be cast to org.dom4j.DocumentFactory Nested exception:
org.dom4j.DocumentFactory cannot be cast to org.dom4j.DocumentFactory
at
net.sf.eclipsecs.core.builder.CheckstyleBuilder.handleBuildSelection(CheckstyleBuilder.java:307)
at
net.sf.eclipsecs.core.builder.CheckstyleBuilder.build(CheckstyleBuilder.java:171)
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)

See full Stack in "checkstyle_err.txt". Hope I choose the correct
milestone. I am using the latest version of CheckstylePlugIn for Eclipse.
(Eclipse Checkstyle Plugin 5.9.0.201410282234)

Thx

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[Lars Koedderitzsch]

Please reopen if you still have issues with this