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Bug 117292

Summary:	FileBuiltQuery slows down folder expansion
Product:	java	Reporter:	Petr Nejedly <pnejedly>
Component:	Source	Assignee:	Tomas Zezula <tzezula>
Status:	VERIFIED FIXED
Severity:	blocker	Keywords:	PERFORMANCE
Priority:	P3
Version:	6.x
Hardware:	All
OS:	All
Issue Type:	DEFECT	Exception Reporter:
Bug Depends on:
Bug Blocks:	114195

Description Petr Nejedly 2007-10-01 12:47:07 UTC

JavaNode constructor spends most of the time (~1000ms for 120 files in a folder) inside FileBuiltQuery.getStatus()
Status resolution (which is both processing and I/O expensive) should be performed later, once the folder is rendered,
at best.

Note that the threading is not that simple here, there are already few threads involved in folder expand:
FolderRecognizer, which converts FileObjects into DataObjects 
FolderChildren_Refresh, which creates the nodes for the DataObjects (this is where this slowdown happens)
AWT thread which renders the nodes later.

Also note that it _might_ cause some problems to fire a lot of status changes one-by-one, so some testing of this
scenario might be necessary.

Comment 1 Tomas Zezula 2007-10-02 10:26:31 UTC

Checking in org/netbeans/modules/java/JavaNode.java;
/cvs/java/source/src/org/netbeans/modules/java/JavaNode.java,v  <--  JavaNode.java
new revision: 1.12; previous revision: 1.11
done

Comment 2 Petr Nejedly 2007-10-04 16:56:34 UTC

Looks much better now. At least in the JavaNode ctor....