[ http://issues.apache.org/jira/browse/COLLECTIONS-165?page=all ]
Stephen Colebourne updated COLLECTIONS-165:
-------------------------------------------
Summary: Filtered Maps, Lists, and Sets (was: [collections] Filtered
Maps, Lists, and Sets)
Issue Type: New Feature (was: Improvement)
Bugzilla Id: (was: 29829)
Component/s: List
Map
Set
Fix Version/s: 3.3
This is a useful feature which we should add
> Filtered Maps, Lists, and Sets
> ------------------------------
>
> Key: COLLECTIONS-165
> URL: http://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: 3.3
>
> 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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