[COLLECTIONS-243] Generic versions of Predicated, Syncronized and Unmodifiable classes

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.2
• Fix Version/s: 4.0-alpha1, 4.0
• Component/s: Bag, Collection, List, Set

Environment

OS X

• Assignee: Stephen Kestle
• Reporter: Edwin Tellman
• Created: 12/Mar/07 05:46
• Updated: 09/Nov/14 14:31
• Resolved: 28/Feb/13 19:57

Description

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, SynchronizedSet
Miscellaneous: PredicatedBuffer

Issue Links

• duplicates: COLLECTIONS-110 Support parametized classes with commons.collections.
• is cloned by: COLLECTIONS-333 Generic versions of Transformed* classes