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| Summary: | Deleting files causes NullPointerException to get thrown | ||
|---|---|---|---|
| Product: | platform | Reporter: | Unknown <non_migrated_user> |
| Component: | -- Other -- | Assignee: | akemr <akemr> |
| Status: | CLOSED FIXED | ||
| Severity: | major | ||
| Priority: | P1 | ||
| Version: | 3.x | ||
| Hardware: | Sun | ||
| OS: | Solaris | ||
| Issue Type: | DEFECT | Exception Reporter: | |
Looks like shadow's original field is null? (Shouldn't DataShadow protected constructor check for original==null and throw NullPointerException immediately to make it easier to diagnose the problem?) FWIW I do not get any exception thrown deleting an object in a current dev build. If you know what conditions are required to reproduce, please add them. I cannot reproduce this bug, but I try to fix it somehow: 1) NullPointerException will be thrown immediately in constructor of DataShadow, if original DataObject is null. 2) checkOriginal(DataObject orig) method, if orig is null, will return null and then create broken link. closed |
Using the latest open and closed source, I find that if I try to delete a file (in the Explorer, choose Delete from the pop up menu for an object), an exception is thrown. The file is deleted, but this causes problems in my module since I am deleting more than one file and since the exception is thrown, only the first file is deleted. Heres the stack trace I get when I delete a java file: java.lang.NullPointerException: null Annotation: Exception occurred in Request Processor org.openide.util.RequestProcessor$Holder(task org.netbeans.core.ModuleActions$1@176572 [-4175, 1]) at org.openide.util.RequestProcessor$Task.createHolder(RequestProcessor.java:275) at org.openide.util.RequestProcessor.post(RequestProcessor.java:99) at org.openide.util.RequestProcessor.post(RequestProcessor.java:72) at org.netbeans.core.ModuleActions.invokeAction(ModuleActions.java:65) at org.openide.awt.Actions$ButtonBridge.actionPerformed(Actions.java:298) at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:1450) at javax.swing.AbstractButton$ForwardActionEvents.actionPerformed(AbstractButton.java:1504) at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:378) at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:250) at javax.swing.AbstractButton.doClick(AbstractButton.java:279) [catch] at javax.swing.plaf.basic.BasicMenuItemUI$MouseInputHandler.mouseReleased(BasicMenuItemUI.java:886) at java.awt.Component.processMouseEvent(Component.java:3715) at java.awt.Component.processEvent(Component.java:3544) at java.awt.Container.processEvent(Container.java:1165) at java.awt.Component.dispatchEventImpl(Component.java:2593) at java.awt.Container.dispatchEventImpl(Container.java:1214) at java.awt.Component.dispatchEvent(Component.java:2497) at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:2452) at java.awt.LightweightDispatcher.processMouseEvent(Container.java:2217) at java.awt.LightweightDispatcher.dispatchEvent(Container.java:2126) at java.awt.Container.dispatchEventImpl(Container.java:1201) at java.awt.Window.dispatchEventImpl(Window.java:912) at java.awt.Component.dispatchEvent(Component.java:2497) at java.awt.EventQueue.dispatchEvent(EventQueue.java:333) at java.awt.EventDispatchThread.pumpOneEvent(EventDispatchThread.java:103) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93) at java.awt.EventDispatchThread.run(EventDispatchThread.java:84) Thu Jan 18 09:53:47 PST 2001java.lang.NullPointerException: null java.lang.NullPointerException at org.openide.loaders.DataShadow.checkOriginal(DataShadow.java:300) at org.openide.loaders.DataShadow.refresh(DataShadow.java:489) at org.openide.loaders.DataShadow.checkValidity(DataShadow.java:152) at org.openide.loaders.ShadowChangeAdapter.checkDataShadows(ShadowChangeAdapter.java:50) at org.openide.loaders.ShadowChangeAdapter.operationDelete(ShadowChangeAdapter.java:100) at org.openide.loaders.DataLoaderPool.fireOperationEvent(DataLoaderPool.java:180) at org.openide.loaders.DataObject.fireOperationEvent(DataObject.java:670) at org.openide.loaders.DataObject.delete(DataObject.java:491) at org.openide.loaders.DataNode.destroy(DataNode.java:203) at org.openide.nodes.FilterNode.destroy(FilterNode.java:315) at org.openide.explorer.ExplorerActions$1.run(ExplorerActions.java:460) at org.openide.filesystems.FileSystem.runAtomicAction(FileSystem.java:371) at org.openide.explorer.ExplorerActions$DeleteActionPerformer.performAction(ExplorerActions.java:456) at org.openide.util.actions.CallbackSystemAction.performAction(CallbackSystemAction.java:78) at org.openide.util.actions.CallableSystemAction.actionPerformed(CallableSystemAction.java:66) at org.netbeans.core.ModuleActions$1.run(ModuleActions.java:67) at org.openide.util.Task.run(Task.java:124) [catch] at org.openide.util.RequestProcessor$ProcessorThread.run(RequestProcessor.java:562)