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assertion failed when using tableviewer [message #441703]

Sat, 21 August 2004 12:00

Eclipse User

Originally posted by: baohuazhang.hotmail.com

hi, i am using tableviewer but I always got this exception when I try to
edit a field;

org.eclipse.jface.util.Assert$AssertionFailedException: Assertion failed:

at org.eclipse.jface.util.Assert.isTrue(Assert.java:154)
at
org.eclipse.jface.viewers.TextCellEditor.doSetValue(TextCell Editor.java:215)
at org.eclipse.jface.viewers.CellEditor.setValue(CellEditor.jav a:760)
at
org.eclipse.jface.viewers.TableViewerImpl.activateCellEditor (TableViewerImpl.java:67)
at
org.eclipse.jface.viewers.TableViewerImpl.activateCellEditor (TableViewerImpl.java:134)
at
org.eclipse.jface.viewers.TableViewerImpl.handleMouseDown(Ta bleViewerImpl.java:234)
at org.eclipse.jface.viewers.TableViewer$1.mouseDown(TableViewe r.java:338)
at
org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListe ner.java:132)
at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java :82)
at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:796)
at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.ja va:2772)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java :2431)
at quoteAndBook.QuotationScreen.open(QuotationScreen.java:358)
at quoteAndBook.Login$4.run(Login.java:196)
at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:3 5)
at
org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchr onizer.java:106)
at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.jav a:2749)
at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java :2434)
at quoteAndBook.Login.open(Login.java:130)
at quoteAndBook.Login.main(Login.java:53)

Please help!

Thanks!

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Re: assertion failed when using tableviewer [message #441707 is a reply to message #441703]

Sat, 21 August 2004 21:54

Julen Parra

Messages: 12
Registered: July 2009

Junior Member

Well it seems like you have either not set the CellModifier for the
TableViewer
(using the setCellModifier() function) or, if you have, then the
getValue() function of your ICellModifier descendant returns either null
or not a String object. The return value of getValue() is an object, but
if you are using a TextCellEditor, it has to return a String.

baohuazhang wrote:

> hi, i am using tableviewer but I always got this exception when I try to
> edit a field;

> org.eclipse.jface.util.Assert$AssertionFailedException: Assertion failed:

> at org.eclipse.jface.util.Assert.isTrue(Assert.java:154)
> at
> org.eclipse.jface.viewers.TextCellEditor.doSetValue(TextCell Editor.java:215)
> at org.eclipse.jface.viewers.CellEditor.setValue(CellEditor.jav a:760)
> at
>
org.eclipse.jface.viewers.TableViewerImpl.activateCellEditor (TableViewerImpl.java:67)
> at
>
org.eclipse.jface.viewers.TableViewerImpl.activateCellEditor (TableViewerImpl.java:134)
> at
>
org.eclipse.jface.viewers.TableViewerImpl.handleMouseDown(Ta bleViewerImpl.java:234)
> at org.eclipse.jface.viewers.TableViewer$1.mouseDown(TableViewe r.java:338)
> at
> org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListe ner.java:132)
> at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java :82)
> at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:796)
> at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.ja va:2772)
> at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java :2431)
> at quoteAndBook.QuotationScreen.open(QuotationScreen.java:358)
> at quoteAndBook.Login$4.run(Login.java:196)
> at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:3 5)
> at
> org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchr onizer.java:106)
> at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.jav a:2749)
> at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java :2434)
> at quoteAndBook.Login.open(Login.java:130)
> at quoteAndBook.Login.main(Login.java:53)

> Please help!

> Thanks!

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