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POException when add data into TableViewer
 

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  1. POException when add data into TableViewer
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    <p>I have 2 TableViewer controls in a composite (Supposed they are : <strong>viewer1</strong>, <strong>viewer2</strong>). When initialize application, one "<strong>viewer1</strong>" is filled data from server while "<strong>viewer2</strong>" is set null.</p> <pre><code>viewer1.setInput(getData()); viewer2.setInput(null); </code></pre> <p>Now I want to change some object from viewer1 to <strong>viewer2</strong> via a context menu, the first time add is successful, but the next time when I fill object to <strong>viewer2</strong>, I always get this exception: <strong>java.lang.UnsupportedOperationException</strong></p> <p>This didn't happen if <strong>viewer2</strong> contain some objects in advance, it only happens when <strong>viewer2</strong> is empty. This is the way I add move some data from <strong>viewer1</strong> to <strong>viewer2</strong> : </p> <pre><code>//get selected objects in Viewer1 IStructuredSelection selection= (IStructuredSelection) viewer1.getSelection(); if(selection!=null){ selectedList=(List&lt;MyObject&gt;)selection.toList(); for(MyObject obj: selectedList){ //do something here } //remove all ((List&lt;MyObject&gt;)viewer1().getInput()).removeAll(selectedList); viewer1.refresh(); } //viewer1 get above List if((List&lt;MyObject&gt;)viewer2.getInput()==null) viewer2.setInput(selectedList); else { ((List&lt;MyObject&gt;)viewer2.getInput()).addAll(selectedList); //(Line Error) } viewer2.refresh; </code></pre> <p>It works well at the first time in the IF condition, but the next time when <strong>viewer2</strong> contained some data, I always get exception at above error line. @Krumelur , I added stacktrace that I got:</p> <pre><code>!ENTRY org.eclipse.ui 4 0 2011-12-27 16:26:50.660 !MESSAGE Unhandled event loop exception !STACK 0 java.lang.UnsupportedOperationException at java.util.AbstractList.add(Unknown Source) at java.util.AbstractList.add(Unknown Source) at java.util.AbstractCollection.addAll(Unknown Source) at com.saltlux.om.client.customwidgets.NeutralSetWidget.getReviewFromOtherWidget(NeutralSetWidget.java:39) at com.saltlux.om.client.customwidgets.NeutralSetWidget$1.handleEvent(NeutralSetWidget.java:24) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1077) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1062) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:774) at com.saltlux.om.client.customwidgets.PositiveSetWidget.add2TrainingSet(PositiveSetWidget.java:107) at com.saltlux.om.client.customwidgets.TrainingReviewWidget$10.run(TrainingReviewWidget.java:288) at org.eclipse.jface.action.Action.runWithEvent(Action.java:498) at org.eclipse.jface.action.ActionContributionItem.handleWidgetSelection(ActionContributionItem.java:584) at org.eclipse.jface.action.ActionContributionItem.access$2(ActionContributionItem.java:501) at org.eclipse.jface.action.ActionContributionItem$5.handleEvent(ActionContributionItem.java:411) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:84) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1053) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:4165) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3754) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:2696) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:2660) at org.eclipse.ui.internal.Workbench.access$4(Workbench.java:2494) at org.eclipse.ui.internal.Workbench$7.run(Workbench.java:674) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:332) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:667) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:149) at com.saltlux.om.client.Application.start(Application.java:21) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179) 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:622) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577) at org.eclipse.equinox.launcher.Main.run(Main.java:1410) at org.eclipse.equinox.launcher.Main.main(Main.java:1386) </code></pre> <p>Please help me out. Thanks so much for any answer!</p>
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    1. This table or related slice is empty.
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
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    2. PO
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      1. POException when add data into TableViewer
      1. This table or related slice is empty.
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      1. POException when add data into TableViewer
      1. This table or related slice is empty.
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    1. CODo you have a stacktrace for the exception?
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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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