[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-6862) Reuse cached entryArray of IdentityMap in StatefulPersistenceContext as much as possible

[Strong Liu (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-6862?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=44467#comment-44467 ] 

Strong Liu commented on HHH-6862:
---------------------------------

I added one more commit.

now, only linked identity hash map is provided by _IdentityMap_

so, we can find a better way to write a concurrent modification safe linked identity hash map to replace _IdentityMap_

> Reuse cached entryArray of IdentityMap in StatefulPersistenceContext as much as possible
> ----------------------------------------------------------------------------------------
>
>                 Key: HHH-6862
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-6862
>             Project: Hibernate Core
>          Issue Type: Improvement
>            Reporter: Sanne Grinovero
>            Assignee: Sanne Grinovero
>            Priority: Minor
>             Fix For: 4.0.0.next
>
>
> There are different options to iterate the containers of a StatefulPersistenceContext, and these iteration operations happen frequently.
> Usage of IdentityMap is able to cache cache the array it creates to provide a safe iteration during modifications, so I've collapsed all usage of the PersistenceContext to use less different iteration approaches, and this resulted in a small performance improvement and some code simplification.

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