org.apache.commons.collections.set
Class PredicatedSet
- Collection, Serializable, Set
public class PredicatedSet
implements Set
Decorates another
Set
to validate that all additions
match a specified predicate.
This set exists to provide validation for the decorated set.
It is normally created to decorate an empty set.
If an object cannot be added to the set, an IllegalArgumentException is thrown.
One usage would be to ensure that no null entries are added to the set.
Set set = PredicatedSet.decorate(new HashSet(), NotNullPredicate.INSTANCE);
This class is Serializable from Commons Collections 3.1.
$Revision: 1.6 $ $Date: 2004/06/03 22:02:13 $- Stephen Colebourne
- Paul Jack
static Set | decorate(Set set, Predicate predicate) - Factory method to create a predicated (validating) set.
|
protected Set | getSet() - Gets the set being decorated.
|
add , addAll , clear , contains , containsAll , equals , getCollection , hashCode , isEmpty , iterator , remove , removeAll , retainAll , size , toArray , toArray , toString |
PredicatedSet
protected PredicatedSet(Set set,
Predicate predicate)
Constructor that wraps (not copies).
If there are any elements already in the set being decorated, they
are validated.
set
- the set to decorate, must not be nullpredicate
- the predicate to use for validation, must not be null
decorate
public static Set decorate(Set set,
Predicate predicate)
Factory method to create a predicated (validating) set.
If there are any elements already in the set being decorated, they
are validated.
set
- the set to decorate, must not be nullpredicate
- the predicate to use for validation, must not be null
getSet
protected Set getSet()
Gets the set being decorated.
Copyright © 2001-2006 Apache Software Foundation. All Rights Reserved.