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https://issues.apache.org/jira/browse/COLLECTIONS-256?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Henri Yandell closed COLLECTIONS-256.
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Resolution: Fixed
Patch applied.
> ListUtils.transformedList(list, transformer) doesn't transform
> --------------------------------------------------------------
>
> Key: COLLECTIONS-256
> URL: https://issues.apache.org/jira/browse/COLLECTIONS-256
> Project: Commons Collections
> Issue Type: Bug
> Components: List
> Affects Versions: 3.2
> Environment: Java 1.5
> Reporter: Kurtis Williams
> Assignee: Henri Yandell
> Fix For: 3.3
>
> Attachments: COLLECTIONS-256.patch
>
>
> The static method ListUtils.transformedList(List list, Transformer trans)
> does not apply the transformer before returning the list. I've traced into
> the code and it falls all the way through to the TransformedCollection
> constructor which has documentation that states that items existing in the
> list are NOT transformed. This yields bizarre unexpected behavior for this
> method.
> Conversely, the ListUtils.predicatedList(List list, Predicate pred) DOES
> apply the predicate. These methods are very similar but behave
> inconsistently.
> If the transformer is not applied to the list, the method's usefulness is
> somewhat limited and causes the user to create an extra unwanted list in some
> circumstances:
> // To transform an existing list
> List myList = ... some list to be transformed ...
> List transformed = ListUtils.transformedList(new ArrayList(), myTransformer);
> transformed.addAll(myList);
> I would expect a much shorter implementation such as:
> List transformed = ListUtils.transformedList(myList, myTransformer)
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