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http://issues.apache.org/bugzilla/show_bug.cgi?id=29440

[Collections] MultiSortedMap / MultiTreeMap

           Summary: [Collections] MultiSortedMap / MultiTreeMap
           Product: Commons
           Version: Nightly Builds
          Platform: Other
        OS/Version: Other
            Status: NEW
          Severity: Enhancement
          Priority: Other
         Component: Collections
        AssignedTo: [EMAIL PROTECTED]
        ReportedBy: [EMAIL PROTECTED]


Currently Collections (v3.1-dev) contains only a single implementation of the
MultiMap interface: MultiHashMap. Sometimes it would be useful to have other
MultiMaps, e.g. MultiMaps following the SortedMap contract.

Since I had urgent need for such a MultiSortedMap, I copied-and-pasted
MultiHashMap to created a class "MultiTreeMap". I'm ready to add it as a patch
if you're interested.

Of course, this is a very ugly approach because of the code duplication. A
better solution would be to create an MultiMap implementation that wraps a map
of the requested type (HashMap, TreeMap, whatever) instead of subclassing.

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