[jira] [Commented] (DAFFODIL-1861) Investigating if QName interning could speed up HashMap lookups in the Infoset

["Mike Beckerle (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/DAFFODIL-1861?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17168251#comment-17168251 ] 

Mike Beckerle commented on DAFFODIL-1861:
-----------------------------------------

We don't intern the QName objects. They're immutable. There's no reason to ever have more than one instance for a given QName. 
Since they are used for lookups at runtime, we should intern them and always use the same object instance. 

This may save space, and may improve performance. Whether the improvement is measurable is unclear, but it cannot hurt. 

> Investigating if QName interning could speed up HashMap lookups in the Infoset
> ------------------------------------------------------------------------------
>
>                 Key: DAFFODIL-1861
>                 URL: https://issues.apache.org/jira/browse/DAFFODIL-1861
>             Project: Daffodil
>          Issue Type: Bug
>          Components: Back End
>            Reporter: Steve Lawrence
>            Priority: Major
>




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