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From "Stephen Colebourne (JIRA)" <j...@apache.org>
Subject [jira] Commented: (COLLECTIONS-243) generic versions of some more classes
Date Mon, 12 Mar 2007 22:07:09 GMT

    [ https://issues.apache.org/jira/browse/COLLECTIONS-243?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12480199
] 

Stephen Colebourne commented on COLLECTIONS-243:
------------------------------------------------

With all of these cases, you also need to ask if there really are any valid use cases for
the collection - TransformedXxx in this case.

> generic versions of some more classes
> -------------------------------------
>
>                 Key: COLLECTIONS-243
>                 URL: https://issues.apache.org/jira/browse/COLLECTIONS-243
>             Project: Commons Collections
>          Issue Type: Improvement
>          Components: Collection
>    Affects Versions: Generics
>         Environment: OS X
>            Reporter: Edwin Tellman
>            Priority: Minor
>             Fix For: Generics
>
>         Attachments: collections_06_03_11.patch
>
>
> I added generics to some more classes and fixed some compilation problems.
> The generic version of Transformer required the input and output types to be identical.
 This seemed to me to reduce the usefulness of transformed collections, as transforming one
type into another seems like it would be a fairly common operation.  I'm not sure how to fix
this, however, as it also doesn't seem feasible to have a generic TransformedCollection with
different input and output types that implements Collection<E>.  Anyway, this patch
de-generifies TransformedCollection, which also fixes some compilation problems.  Please disregard
this change if you disagree and have a better solution.

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