[COLLECTIONS-275] IndexedCollection would be a useful addition to Commons Collections

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.0-alpha1, 4.0
• Component/s: Collection
• Assignee: Stephen Kestle
• Reporter: Stephen Kestle
• Created: 08/Nov/07 11:53
• Updated: 09/Nov/14 14:31
• Resolved: 02/Mar/13 12:58

Description

I propose that an IndexedCollection is added, which has the following properties

• IndexedCollection<K,C> implements Collection<C>, Map<K,C>
• Contains a Transformer<C,K> for determining the keys
• Presents as an unmodifiableMap (all manipulation must be done through the collection)
• It will need constructors for unique indexes (Map) and non-unique (Map<K,Collection<V>> / MultiMap).