[jboss-jira] [JBoss JIRA] Commented: (JBCACHE-1322) Optimise Fqn class for performance in equals() and hashcode()

Tue Apr 8 10:32:55 EDT 2008

    [ http://jira.jboss.com/jira/browse/JBCACHE-1322?page=comments#action_12407526 ] 

Manik Surtani commented on JBCACHE-1322:
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For 2.2.0, I have just marked all public constructors as deprecated and have provided factory methods instead.  

>From 3.0.0 we can remove the public constructors and work on potentially interning Fqns after profiling a prototype for their usefulness and real gain in performance.

> Optimise Fqn class for performance in equals() and hashcode()
> -------------------------------------------------------------
>
>                 Key: JBCACHE-1322
>                 URL: http://jira.jboss.com/jira/browse/JBCACHE-1322
>             Project: JBoss Cache
>          Issue Type: Feature Request
>      Security Level: Public(Everyone can see) 
>            Reporter: Manik Surtani
>         Assigned To: Manik Surtani
>             Fix For: 2.2.0.GA
>
>
> A part of this will be to mark all constructors as @Deprecated and make them all private (or protected?) in 3.0.0.  Provide adequate factory methods that would create Fqns.  
> The main benefit is that we can intern Fqns and not have to construct them each time.
> Other improvements are a link to the parent and the current "name", rather than the whole list of elements.  Hashcodes and equals can be calculated quickly this way, and caching hashcodes/equality tests based on identity become a possibility.
> Other suggestions in design forum thread.

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