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From "Sebb (JIRA)" <>
Subject [jira] [Created] (COLLECTIONS-461) splitmap.TransformedMap is not really a Map
Date Mon, 06 May 2013 10:18:15 GMT
Sebb created COLLECTIONS-461:

             Summary: splitmap.TransformedMap is not really a Map
                 Key: COLLECTIONS-461
             Project: Commons Collections
          Issue Type: Bug
            Reporter: Sebb

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)

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