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Posted to dev@commons.apache.org by "Stephen Kestle (JIRA)" <ji...@apache.org> on 2006/07/19 01:22:14 UTC
[jira] Updated: (COLLECTIONS-218) CollectionUtils.select() does not
return passed in collection
[ http://issues.apache.org/jira/browse/COLLECTIONS-218?page=all ]
Stephen Kestle updated COLLECTIONS-218:
---------------------------------------
Attachment: CollectionUtils select return.patch
Uploaded patch file for proposed changes.
I have also made changes to the two argument methods of select(), selectReject() and collect() to be simple one-liners:
from:
public static Collection collect(Collection inputCollection, Transformer transformer) {
ArrayList answer = new ArrayList(inputCollection.size());
collect(inputCollection, transformer, answer);
return answer;
}
to:
public static Collection collect(Collection inputCollection, Transformer transformer) {
return collect(inputCollection, transformer, new ArrayList(inputCollection.size()));
}
I'll leave it up to you developers to figure out if that's a good or a bad thing...
> CollectionUtils.select() does not return passed in collection
> -------------------------------------------------------------
>
> Key: COLLECTIONS-218
> URL: http://issues.apache.org/jira/browse/COLLECTIONS-218
> Project: Commons Collections
> Issue Type: Improvement
> Components: Collection
> Affects Versions: 3.2, 3.1, 3.0, 2.1.1, 2.1, 2.0, 1.0, 3.3, Nightly Builds
> Reporter: Stephen Kestle
> Attachments: CollectionUtils select return.patch
>
>
> collect has the following methods:
> Collection collect(Collection inputCollection, final Transformer transformer)
> Collection collect(Collection inputCollection, final Transformer transformer, final Collection outputCollection)
> The first creates an ArrayList(), where the second takes an outputCollection and, for convenience, returns it.
> Select (and selectReject) currently the following methods:
> Collection select(Collection inputCollection, Predicate predicate)
> void select(Collection inputCollection, Predicate predicate, Collection outputCollection)
> I propose changing the bottom method to return the passed in outputCollection. It would simplify calling code.
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