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From "Anthony Communier (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (COLLECTIONS-506) Result of CollectionUtils are different between version 3.2.1 and version 4.0
Date Thu, 02 Jan 2014 11:34:50 GMT

    [ https://issues.apache.org/jira/browse/COLLECTIONS-506?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13860143#comment-13860143
] 

Anthony Communier commented on COLLECTIONS-506:
-----------------------------------------------

Thank you !

> Result of CollectionUtils are different between version 3.2.1 and version 4.0
> -----------------------------------------------------------------------------
>
>                 Key: COLLECTIONS-506
>                 URL: https://issues.apache.org/jira/browse/COLLECTIONS-506
>             Project: Commons Collections
>          Issue Type: Bug
>    Affects Versions: 4.0
>            Reporter: Anthony Communier
>             Fix For: 4.0.1
>
>         Attachments: test-common-collection.zip
>
>
> CollectionUtils V3 uses equals to compute results but not CollectionUtils v4 (it seems
to use ==)
> The following exemple with subtract method :
>  List<ObjectTest> listA = new ArrayList<ObjectTest>();
>         List<ObjectTest> listB = new ArrayList<ObjectTest>();
>         listA.add(new ObjectTest("Test1"));
>         listA.add(new ObjectTest("Test2"));
>         listA.add(new ObjectTest("Test3"));
>         listB.add(new ObjectTest("Test1"));
>         listB.add(new ObjectTest("Test2"));
>         Collection<?> res1 = org.apache.commons.collections.CollectionUtils.subtract(listA,
listB);
>         System.out.println("Res1 size = " +res1.size());
>         Collection<?> res2 =  org.apache.commons.collections4.CollectionUtils.subtract(listA,
listB);
>         System.out.println("Res2 size = " +res2.size());
> Produces this : 
> Res1 size = 1
> Res2 size = 3
> The new behaviour is not useful. It would be better to have the V3 behaviour



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