Intermittant ClassCastException from dom4j.DocumentFactory.getInstance()
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Key: DIRSTUDIO-301
URL: https://issues.apache.org/jira/browse/DIRSTUDIO-301
Project: Directory Studio
Issue Type: Bug
Components: studio-connection
Affects Versions: 1.1.0
Environment: Eclipse 3.3
Java 1.5.0_11
Windows XP Pro
Reporter: John Buslawski
Priority: Critical
Fix For: 1.1.0
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/[EMAIL PROTECTED]/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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