Bug 10152

Summary:	Computing hierarchy of IResource is slow
Product:	[Eclipse Project] JDT	Reporter:	Jerome Lanneluc <jerome_lanneluc>
Component:	Core	Assignee:	Philipe Mulet <philippe_mulet>
Status:	RESOLVED FIXED	QA Contact:
Severity:	normal
Priority:	P3
Version:	2.0
Target Milestone:	2.0 M4
Hardware:	PC
OS:	Windows 2000
Whiteboard:

Description Jerome Lanneluc

2002-02-25 06:51:06 EST

Build 20020214

Computing the hierarchy of IResource can take more than 30s.
75% of the time is spent getting the potential subtypes from the indexes.

Comment 1 Jerome Lanneluc

2002-02-25 11:01:47 EST

The recursive call to the SuperTypeReferencePattern to find possible subtypes 
was the bottleneck. It was querying all indexes in the workspace for each 
subtype.

Querying all potential subtypes at once (and caching the result) reduced the 
time spent getting the potential subtypes to less than a second.