Bug 89094

Summary:	[performance] DOM AST conversion could intern String locally
Product:	[Eclipse Project] JDT	Reporter:	Philipe Mulet <philippe_mulet>
Component:	Core	Assignee:	JDT-Core-Inbox <jdt-core-inbox>
Status:	RESOLVED WONTFIX	QA Contact:
Severity:	normal
Priority:	P3	CC:	jerome_lanneluc
Version:	3.1	Keywords:	performance
Target Milestone:	---
Hardware:	PC
OS:	Windows XP
Whiteboard:

Description Philipe Mulet

2005-03-25 07:42:36 EST

Build 3.1m5a

When converting AST, DOM is allocating a String for every token. Given these may
be shared by underlying Scanner, the DOM representation is wasting memory there.
It could do some String interning (at least per DOM AST pipeline basis).

Comment 1 Philipe Mulet

2005-04-05 15:40:49 EDT

You may want to interact with Jerome to see if you could reuse some of the model
infrastructure.
In your case, you want to query existing Strings based on a char[] (equals). The
model has sets of char[] and String to avoid persisting more than one instance
of each, could be something which could be augmented for DOM AST support (and
maybe model could start using it as well).

Comment 2 Olivier Thomann

2005-05-10 08:00:21 EDT

Close as LATER

Comment 3 Denis Roy

2009-08-30 02:12:40 EDT

As of now 'LATER' and 'REMIND' resolutions are no longer supported.
Please reopen this bug if it is still valid for you.