[jira] Commented: (COLLECTIONS-237) MultiValueMap: behavior of entrySet().iterator() is not the expected one

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[jira] Commented: (COLLECTIONS-237) MultiValueMap: behavior of entrySet().iterator() is not the expected one

JIRA jira@apache.org

    [ https://issues.apache.org/jira/browse/COLLECTIONS-237?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12597364#action_12597364 ]

Henri Yandell commented on COLLECTIONS-237:
-------------------------------------------

Ironically, this is the same bug that causes errors with the serialization tests in COLLECTIONS-240. containsAll fails because the elements are now all inside arraylists.

> MultiValueMap: behavior of entrySet().iterator() is not the expected one
> ------------------------------------------------------------------------
>
>                 Key: COLLECTIONS-237
>                 URL: https://issues.apache.org/jira/browse/COLLECTIONS-237
>             Project: Commons Collections
>          Issue Type: Bug
>          Components: Map
>    Affects Versions: 3.2
>            Reporter: Nils Kaiser
>             Fix For: 3.4
>
>
> The entrySet() method of the MultiValueMap delegates the entrySet() call to the decorated map, which is HashMap by default. The default hashmap iterator is used, which causes the iterator to return one Map.Entry for every key. The value returned for the key is an ArrayList, and not the value of the entry which was put into the map.
> The expected behavior would be the iterator to return the whole set of entries in the map, which requires iteration over the different array lists contained in the decorated map.

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