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

["Thomas Neidhart (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/COLLECTIONS-356?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Thomas Neidhart updated COLLECTIONS-356:
----------------------------------------

    Fix Version/s: 4.x
    
> Request for a Many-to-Many BidiMap
> ----------------------------------
>
>                 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
>             Fix For: 4.x
>
>
> 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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