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

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

Phil Steitz (Jira)

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

Thomas Neidhart updated COLLECTIONS-165:
----------------------------------------

    Fix Version/s:     (was: 4.x)
   

> 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
>         Attachments: ASF.LICENSE.NOT.GRANTED--FilteredCollection.java, ASF.LICENSE.NOT.GRANTED--FilteredListIterator.java, ASF.LICENSE.NOT.GRANTED--FilteredList.java, ASF.LICENSE.NOT.GRANTED--FilteredMap.java, ASF.LICENSE.NOT.GRANTED--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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