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From "Sergei Ivanov (JIRA)" <j...@apache.org>
Subject [jira] Commented: (COLLECTIONS-110) [collections] Support parametized classes with commons.collections.
Date Thu, 08 Jun 2006 22:23:30 GMT
    [ http://issues.apache.org/jira/browse/COLLECTIONS-110?page=comments#action_12415442 ]


Sergei Ivanov commented on COLLECTIONS-110:
-------------------------------------------

Just had a look at it, and have a feeling that the second SF project is much, much better
than the first one.
Still, it is more rigid (regarding the use of generics) in many places than it should have
been imho.
For example, instead of:
    TransformingComparator(Transformer<I,O> transformer, Comparator<O> decorated)
...I would go for a more relaxed version:
    TransformingComparator(Transformer<? super I, ? extends O> transformer, Comparator<?
super O> decorated)
So that the following is possible:
    Comparator<Double> c = 
        new TransformingComparator<Double, Comparable>(
            StringValueTransformer.getInstance(),
            ComparableComparator.getInstance()
        );

Am I paranoid?

> [collections] Support parametized classes with commons.collections.
> -------------------------------------------------------------------
>
>          Key: COLLECTIONS-110
>          URL: http://issues.apache.org/jira/browse/COLLECTIONS-110
>      Project: Commons Collections
>         Type: Bug

>  Environment: Operating System: other
> Platform: Other
>     Reporter: Colbert Philippe

>
> It's time to create a parallel version of commons.collections to support 
> parametized classes of each container class and abstract class.  It's not that 
> hard.  There is a 23 PDF document on Sun Java website describing in detail how 
> it should be done and what to watch out for.
> I already converted a few classes from commons.collection privately for my own 
> needs.  Once you get the hang of it, it's a rather quick process.
> I am even willing to volunteer my time to do some more but I need the 
> collaboration of some of the original programmers to watch over things.

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