Maven
  1. Maven
  2. MNG-2228

Classloader problem loading jars from build extensions

    Details

    • Type: Bug Bug
    • Status: Closed Closed
    • Priority: Blocker Blocker
    • Resolution: Fixed
    • Affects Version/s: 2.0.4
    • Fix Version/s: 2.0.5
    • Component/s: Dependencies
    • Labels:
      None
    • Complexity:
      Intermediate
    • Number of attachments :
      1

      Description

      When running "mvn install" and "mvn testwagonscm:test" in the attached test case you get a ClassCastException although the Class to assign to and the assigned one are the same. The problem seems to be that they come from different classloaders. This problem makes the project-info-report:scm goal fail.

      Same as MNG-2225, but using build extensions instead of jars in M2_HOME

        Issue Links

          Activity

          Hide
          Carlos Sanchez added a comment -

          This breaks generation of site when wagon-scm is in the build extensions, eg. to deploy the site to svn or cvs for Collabnet (dev.java.net)

          When running site Maven tries always to instantiate projec-info-report mojos before checking in the pom for "exclude default reports" option.

          The only way to generate the site was install the project-info-report plugin after removing the class ScmReport. It has to go under the same groupId, org.apache.maven.plugins, which makes it a real hack

          Show
          Carlos Sanchez added a comment - This breaks generation of site when wagon-scm is in the build extensions, eg. to deploy the site to svn or cvs for Collabnet (dev.java.net) When running site Maven tries always to instantiate projec-info-report mojos before checking in the pom for "exclude default reports" option. The only way to generate the site was install the project-info-report plugin after removing the class ScmReport. It has to go under the same groupId, org.apache.maven.plugins, which makes it a real hack
          Hide
          John Casey added a comment -

          This would require some heavy refactoring to introduce a new way to manage artifacts in the core classloader during the resolution process. See MNG-2225 for more information.

          Show
          John Casey added a comment - This would require some heavy refactoring to introduce a new way to manage artifacts in the core classloader during the resolution process. See MNG-2225 for more information.
          Hide
          Carlos Sanchez added a comment -

          Another worst problem is that it causes the release:prepare to fail too

          Show
          Carlos Sanchez added a comment - Another worst problem is that it causes the release:prepare to fail too
          Hide
          Carlos Sanchez added a comment -

          New patch with less snapshots

          Show
          Carlos Sanchez added a comment - New patch with less snapshots
          Hide
          Brett Porter added a comment -

          this caused some problems with the release plugin because jdom was in the root container (via wagon-webdav), but jaxen was not (because it is optional, so it was not caught by the resolution I added).

          I have an alternate solution putting extensions in a child container like plugins which is working. I will clean up and commit tomorrow.

          This could be reviewed and handled differently for trunk given the changes to plexus and classworlds. I'll examine that separately.

          Show
          Brett Porter added a comment - this caused some problems with the release plugin because jdom was in the root container (via wagon-webdav), but jaxen was not (because it is optional, so it was not caught by the resolution I added). I have an alternate solution putting extensions in a child container like plugins which is working. I will clean up and commit tomorrow. This could be reviewed and handled differently for trunk given the changes to plexus and classworlds. I'll examine that separately.

            People

            • Assignee:
              Brett Porter
              Reporter:
              Carlos Sanchez
            • Votes:
              0 Vote for this issue
              Watchers:
              2 Start watching this issue

              Dates

              • Created:
                Updated:
                Resolved: