Directory Studio
  1. Directory Studio
  2. DIRSTUDIO-301

Intermittant ClassCastException from dom4j.DocumentFactory.getInstance()

    Details

      Description

      We've integrated Directory Studio 1.1 0 into our Eclipse application and we occasionally see the following stack trace when we select the Finish button while defining a new connection via the New LDAP Connection wizard. The stack trace display each time the Finish button is displayed and the wizard never completes. You always have to cancel the wizard. Most of the time the wizard works fine but occasionally it has this problem.

      We see a similar stack trace with ClassCastException from DocumentFactory.getInstance() when we launch our application and we have previously defined LDAP connections. It appears as though Directory Studio is trying to read the persisted connection definitions but cannot due to the exception. The appearance is that your previously defined connections do not appear in the Connections view but if you try to define a connection with a previously defined (but now invisible) connection name you will get a message about a duplicate name. This problem is also intermittant and sometimes it seems to depend on what perspective is loaded during the launch.

      After researching this problem I found the following link that seems to be related to just this issue with dom4j-1.6.1.jar which Directory Studio bundles in org.apache.directory.studio.jars_1.1.0.v20080303.jar.

      http://www.mail-archive.com/dom4j-dev@lists.sourceforge.net/msg01282.html
      [dom4j-dev] [ dom4j-Bugs-1618750 ] ClassCastException while creating org.dom4j.DocumentFactory

      It's not clear what the fix should be after reading this thread. We use dom4j-1.5.2.jar in our application have never seen an issue like this. I was tempted to replace the dom4j-1.6.1.jar with dom4j-1.5.2.jar in org.apache.directory.studio.jars_1.1.0.v20080303.jar to see if it would fix the problem but I wasn't sure what other impacts, if any, that might cause.

      These issues, especially the invisible connections, are a real annoyance for our users so I'm marking this issue as critical. We would really like to see this addressed before Directory Studio reaches GA.

      !STACK 0
      java.lang.ClassCastException: org.dom4j.DocumentFactory
      at org.dom4j.DocumentFactory.getInstance(DocumentFactory.java:97)
      at org.dom4j.DocumentHelper.getDocumentFactory(DocumentHelper.java:36)
      at org.dom4j.DocumentHelper.createDocument(DocumentHelper.java:41)
      at org.apache.directory.studio.connection.core.io.ConnectionIO.saveConnectionFolders(ConnectionIO.java:444)
      at org.apache.directory.studio.connection.core.ConnectionFolderManager.saveConnectionFolders(ConnectionFolderManager.java:339)
      at org.apache.directory.studio.connection.core.ConnectionFolderManager.connectionAdded(ConnectionFolderManager.java:284)
      at org.apache.directory.studio.connection.core.event.ConnectionEventRegistry$4.run(ConnectionEventRegistry.java:250)
      at org.apache.directory.studio.connection.core.event.CoreEventRunner.execute(CoreEventRunner.java:41)
      at org.apache.directory.studio.connection.core.event.ConnectionEventRegistry.fireConnectionAdded(ConnectionEventRegistry.java:257)
      at org.apache.directory.studio.connection.core.ConnectionManager.addConnection(ConnectionManager.java:119)
      at org.apache.directory.studio.connection.ui.wizards.NewConnectionWizard.performFinish(NewConnectionWizard.java:165)
      at org.eclipse.jface.wizard.WizardDialog.finishPressed(WizardDialog.java:742)
      at org.eclipse.jface.wizard.WizardDialog.buttonPressed(WizardDialog.java:373)
      at org.eclipse.jface.dialogs.Dialog$2.widgetSelected(Dialog.java:616)
      at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:227)
      at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
      at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:938)
      at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3682)
      at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3293)
      at org.eclipse.jface.window.Window.runEventLoop(Window.java:820)
      at org.eclipse.jface.window.Window.open(Window.java:796)
      at org.apache.directory.studio.connection.ui.actions.NewConnectionAction.run(NewConnectionAction.java:68)
      at org.apache.directory.studio.connection.ui.actions.StudioActionProxy.run(StudioActionProxy.java:238)
      at org.eclipse.jface.action.Action.runWithEvent(Action.java:498)
      at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:545)
      at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:490)
      at org.eclipse.jface.action.ActionContributionItem$6.handleEvent(ActionContributionItem.java:443)
      at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)
      at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:938)
      at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3682)
      at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3293)
      at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2389)
      at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2353)
      at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2219)
      at org.eclipse.ui.internal.Workbench$4.run(Workbench.java:466)
      at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:289)
      at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:461)
      at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149)
      at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:106)
      at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:153)
      at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:106)
      at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:76)
      at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:363)
      at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:176)
      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.equinox.launcher.Main.invokeFramework(Main.java:504)
      at org.eclipse.equinox.launcher.Main.basicRun(Main.java:443)
      at org.eclipse.equinox.launcher.Main.run(Main.java:1169)
      at org.eclipse.equinox.launcher.Main.main(Main.java:1144)

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          People

          • Assignee:
            Pierre-Arnaud Marcelot
            Reporter:
            John Buslawski
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            Dates

            • Created:
              Updated:
              Resolved:

              Development