What would a Predicate look like?
We've passed an object in, so it must have the object being added (or
removed/searched for etc???).
So I'm guessing in Predicate(d)List we'll do some code kinda like:
// uses ArrayList internally, can supply another type of List somehow.
List list = new PredicatedList( new TypePredicate(String.class) );
list.add("foo");
This would do in the TypePredicate:
public boolean check(Object obj) {
return BeansUtil.instanceof(obj, myType);
}
or some such. I imagine the Predicate should have access to the list it
came from, so it would have a setCollection setMap? interface? Something.
public void setStructure(Object structure).
Then I can have a predicate which says, let the first person in, then let
no one else in who has a birthday of <birthday>.
I would also then imagine a MultiPredicate which takes a bunch of
Predicates and only allows things if each one works.
*ponder* I'm starting to waffle.
Hen
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