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Posted to issues@commons.apache.org by "Franz Wong (JIRA)" <ji...@apache.org> on 2010/06/23 11:35:50 UTC

[jira] Created: (COLLECTIONS-356) Request for a Many-to-Many BidiMap

Request for a Many-to-Many BidiMap
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                 Key: COLLECTIONS-356
                 URL: https://issues.apache.org/jira/browse/COLLECTIONS-356
             Project: Commons Collections
          Issue Type: New Feature
          Components: Collection
            Reporter: Franz Wong
            Priority: Minor


Currently, BidiMap supports one to one relationship. However, in real life, there are many many-to-many relationships. Take an example of student and course. One student can take many courses while one course contain many students. It would be useful to have a class to manipulate such situation.

The work around currently is using 2 hash maps.

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