[COLLECTIONS-461] splitmap.TransformedMap is not really a Map

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.0-alpha1, 4.0
• Assignee: Unassigned
• Reporter: Sebb
• Created: 06/May/13 10:16
• Updated: 09/Nov/14 14:31
• Resolved: 14/May/13 20:02

Description

splitmap.TransformedMap is part of the Get/Put hierarchy, but it does not behave like a proper Java Map.

In particular, java.util.Map.put(K, V) returns V.
However the collections Put interface returns Object.
As far as I can tell, this was done in order to be able to include TransformedMap in the hiearchy. But the side effect is to break the generics for all the non-transformer maps in the hierarchy.

Maybe there should be a separate PutTransformed interface which has the appropriate generic types, i.e.

public T put(K key, V value)