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From "Matt Benson (JIRA)" <>
Subject [jira] Resolved: (COLLECTIONS-243) Generic versions of Predicated, Syncronized and Unmodifiable classes
Date Fri, 11 Sep 2009 17:32:57 GMT


Matt Benson resolved COLLECTIONS-243.

    Resolution: Fixed

Opened COLLECTIONS-333 to track the Transformed issue; the other classes are generic at least
as of svn rev 738956.

> Generic versions of Predicated, Syncronized and Unmodifiable classes
> --------------------------------------------------------------------
>                 Key: COLLECTIONS-243
>                 URL:
>             Project: Commons Collections
>          Issue Type: Improvement
>          Components: Bag, Collection, List, Set
>    Affects Versions: Generics
>         Environment: OS X
>            Reporter: Edwin Tellman
>            Assignee: Stephen Kestle
>            Priority: Minor
>             Fix For: Generics
>         Attachments: collections_06_03_11.patch
> I added generics to some more classes and fixed some compilation problems.
> The generic version of Transformer required the input and output types to be identical.
 This seemed to me to reduce the usefulness of transformed collections, as transforming one
type into another seems like it would be a fairly common operation.  I'm not sure how to fix
this, however, as it also doesn't seem feasible to have a generic TransformedCollection with
different input and output types that implements Collection<E>.  Anyway, this patch
de-generifies TransformedCollection, which also fixes some compilation problems.  Please disregard
this change if you disagree and have a better solution.
> The modified collection classes are:
> Bags: PredicatedSortedBag, AbstractBagDecorator, SynchronizedBag, UnmodifiableSortedBag,
SynchronizedSortedBag, PredicatedBag
> Lists: PredicatedList, SynchronizedList
> Sets: PredicatedSortedSet, SynchronizedSortedSet, PredicatedSet, UnmodifiableSortedSet,
> Miscellaneous: PredicatedBuffer

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