org.apache.commons.collections.set
Class PredicatedSortedSet
- Collection, Serializable, Set, SortedSet
public class PredicatedSortedSet
implements SortedSet
Decorates another
SortedSet
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.
SortedSet set = PredicatedSortedSet.decorate(new TreeSet(), 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
Comparator | comparator()
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static SortedSet | decorate(SortedSet set, Predicate predicate) - Factory method to create a predicated (validating) sorted set.
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Object | first()
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SortedSet | headSet(Object toElement)
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Object | last()
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SortedSet | subSet(Object fromElement, Object toElement)
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SortedSet | tailSet(Object fromElement)
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add , addAll , clear , contains , containsAll , equals , getCollection , hashCode , isEmpty , iterator , remove , removeAll , retainAll , size , toArray , toArray , toString |
PredicatedSortedSet
protected PredicatedSortedSet(SortedSet 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
comparator
public Comparator comparator()
decorate
public static SortedSet decorate(SortedSet set,
Predicate predicate)
Factory method to create a predicated (validating) sorted 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
first
public Object first()
headSet
public SortedSet headSet(Object toElement)
subSet
public SortedSet subSet(Object fromElement,
Object toElement)
tailSet
public SortedSet tailSet(Object fromElement)
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