[news.eclipse.tools.gef] Zest: Use of setUseHashlookup(false)

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[news.eclipse.tools.gef] Zest: Use of setUseHashlookup(false)

From: eclipse@xxxxxxxxx (Christian Sowada)
Date: Tue, 15 Sep 2009 13:56:53 +0000 (UTC)
Newsgroups: eclipse.tools.gef
Organization: Eclipse
User-agent: NewsPortal/0.36 (http://florian-amrhein.de/newsportal)

I've a problem, in the class AbstractStructuredGraphViewer are HashMaps used. But my Objects changes his HashCode. After that, i got an exception.

Caused by: java.lang.NullPointerException at org.eclipse.zest.core.viewers.internal.AbstractStructuredGraphViewer.inputChanged(AbstractStructuredGraphViewer.java:496) at org.eclipse.jface.viewers.ContentViewer.setInput(ContentViewer.java:274) at org.eclipse.jface.viewers.StructuredViewer.setInput(StructuredViewer.java:1603)

If i switch the HashMaps to IdentityHashMap no more problem. Is there a way to implement the method setUseHashlookup(false)?

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