public class PredicatedSortedSet extends PredicatedSet implements SortedSet
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.
predicate
collection
Modifier | Constructor and Description |
---|---|
protected |
PredicatedSortedSet(SortedSet set,
Predicate predicate)
Constructor that wraps (not copies).
|
Modifier and Type | Method and Description |
---|---|
Comparator |
comparator() |
static SortedSet |
decorate(SortedSet set,
Predicate predicate)
Factory method to create a predicated (validating) sorted set.
|
Object |
first() |
SortedSet |
headSet(Object toElement) |
Object |
last() |
SortedSet |
subSet(Object fromElement,
Object toElement) |
SortedSet |
tailSet(Object fromElement) |
decorate, getSet
add, addAll, decorate, validate
clear, contains, containsAll, equals, getCollection, hashCode, isEmpty, iterator, remove, removeAll, retainAll, size, toArray, toArray, toString
protected PredicatedSortedSet(SortedSet set, Predicate predicate)
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 nullIllegalArgumentException
- if set or predicate is nullIllegalArgumentException
- if the set contains invalid elementspublic static SortedSet decorate(SortedSet set, Predicate predicate)
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 nullIllegalArgumentException
- if set or predicate is nullIllegalArgumentException
- if the set contains invalid elementspublic Comparator comparator()
comparator
in interface SortedSet
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