[collections] new stuff?

[Howie <ca...@toodarkpark.org>]

Hi.  I have a bunch of classes that may fit nicely into 
commons-collections.  Specifically:

* 10 Predicate Objects:  AndPredicate, BetweenPredicate, 
ContainsPredicate, EqualToPredicate, GreaterThanPredicate, InPredicate, 
LessThanPredicate, NotPredicate, NullPredicate, OrPredicate.  These all 
function similar to NeXT's EOQualifier classes, if you're familiar with 
those.

* some Predicate utilities to filter a List and return a new, 
non-backed List, to the user.  Could probably just add these to 
ListUtils and the like.

* a Property Comparator object that uses PropertyUtils to get a 
property, then compare it to some 'static' value.  Most of the 
Predicate classes mentioned above make use of this, as it's really, 
really neat.

How can I go about submitting these to commons-collections for 
consideration?  I've been using these classes at the office for a 
little more than a year now, and I'm thinking others would find them 
interesting, too.

Thanks.

Re: [collections] new stuff - Predicates

[Stephen Colebourne <sc...@btopenworld.com>]

Firstly, take a look at the latest CVS. You will find a PredicateUtils that
may have various of your ideas in it. Also take a look at CollectionUtils as
that already has some filtering code.

It sounds like you still might have some code for us to look at after this.
If so, then I would suggest creating a Bugzilla entry with atachments.

One final word. It may be better to separate the PropertyUtils part from the
rest if possible, as [collections] is, not surprisingly, collections
focussed. As a result the properties part may be rejected as out of scope.

looking forward to seeing some code.

Stephen


----- Original Message -----
From: "Howie" <ca...@toodarkpark.org>
> Hi.  I have a bunch of classes that may fit nicely into
> commons-collections.  Specifically:
>
> * 10 Predicate Objects:  AndPredicate, BetweenPredicate,
> ContainsPredicate, EqualToPredicate, GreaterThanPredicate, InPredicate,
> LessThanPredicate, NotPredicate, NullPredicate, OrPredicate.  These all
> function similar to NeXT's EOQualifier classes, if you're familiar with
> those.
>
> * some Predicate utilities to filter a List and return a new,
> non-backed List, to the user.  Could probably just add these to
> ListUtils and the like.
>
> * a Property Comparator object that uses PropertyUtils to get a
> property, then compare it to some 'static' value.  Most of the
> Predicate classes mentioned above make use of this, as it's really,
> really neat.
>
> How can I go about submitting these to commons-collections for
> consideration?  I've been using these classes at the office for a
> little more than a year now, and I'm thinking others would find them
> interesting, too.
>
> Thanks.
>
>
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