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Sebb commented on COLLECTIONS-461: ---------------------------------- bq. Is the issue that TransformedMap is still named *Map? No, the problem here is that the "real" Map classes are compromised because Put#put(K, V) returns Object rather than V. The Put interface is not exactly the same as the "write" subset of java.util.Map. > splitmap.TransformedMap is not really a Map > ------------------------------------------- > > Key: COLLECTIONS-461 > URL: https://issues.apache.org/jira/browse/COLLECTIONS-461 > Project: Commons Collections > Issue Type: Bug > Reporter: Sebb > Fix For: 4.x > > > 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) -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira