[jira] [Created] (COLLECTIONS-871) Add a LinkedHashSetValuedLinkedHashMap to preserve unicity and insertion order

["Peter De Maeyer (Jira)" <ji...@apache.org>]

Peter De Maeyer created COLLECTIONS-871:
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             Summary: Add a LinkedHashSetValuedLinkedHashMap to preserve unicity and insertion order
                 Key: COLLECTIONS-871
                 URL: https://issues.apache.org/jira/browse/COLLECTIONS-871
             Project: Commons Collections
          Issue Type: New Feature
          Components: Map
    Affects Versions: 4.5.0-M2
            Reporter: Peter De Maeyer


Add a {{LinkedHashSetValuedLinkedHashMap}}, to complement the existing {{MultiValuedMap}} implementations.

COLLECTIONS-533 adds a {{ArrayListValuedLinkedHashMap}}, which is similar to {{ArrayListValuedHashMap}} but additionally preserves insertion order. One could envision a similar {{LinkedHashSetValuedLinkedHashMap}}, which does the same compared to {{HashSetValuedHashMap}}.



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