[jira] Updated: (COLLECTIONS-165) Filtered Maps, Lists, and Sets

["Matt Benson (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/COLLECTIONS-165?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matt Benson updated COLLECTIONS-165:
------------------------------------

    Fix Version/s:     (was: 3.3)
                   3.4

Concerns have been raised about adding new classes to [collections]; the community will have to reach a consensus before this will happen.  Bumping to 3.4.

> 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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