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From "Henri Yandell (JIRA)" <j...@apache.org>
Subject [jira] Commented: (COLLECTIONS-165) Filtered Maps, Lists, and Sets
Date Wed, 19 Mar 2008 06:08:24 GMT

    [ https://issues.apache.org/jira/browse/COLLECTIONS-165?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12580242#action_12580242
] 

Henri Yandell commented on COLLECTIONS-165:
-------------------------------------------

Stephen was the one with those concerns though. Then again, his comment above might predate
that.

> Filtered Maps, Lists, and Sets
> ------------------------------
>
>                 Key: COLLECTIONS-165
>                 URL: https://issues.apache.org/jira/browse/COLLECTIONS-165
>             Project: Commons Collections
>          Issue Type: New Feature
>          Components: List, Map, Set
>    Affects Versions: 3.1
>         Environment: Operating System: other
> Platform: Other
>            Reporter: Venkatesh Prasad Ranganath
>            Priority: Minor
>             Fix For: 3.4
>
>         Attachments: FilteredCollection.java, FilteredList.java, FilteredListIterator.java,
FilteredMap.java, FilteredSet.java
>
>
> In the project I work I have found that it would be efficient (at a small cost
> of memory) to use filtered maps, lists, and sets instead of creating a new copy
> of the decorated entities that contains only the filtered elements.
> To begin with I have implemented a FilteredMap and plan to implement
> FilteredList and FilteredSet.  I will post the code for these in a couple of
> days and it would be great if Collections library could accept these contributions.

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