org.apache.commons.collections.functors
Class NullIsTruePredicate
java.lang.Object
org.apache.commons.collections.functors.NullIsTruePredicate
- Predicate, PredicateDecorator, Serializable
public final class NullIsTruePredicate
extends java.lang.Object
Predicate implementation that returns true if the input is null.
$Revision: 1.6 $ $Date: 2004/05/31 16:43:17 $
NullIsTruePredicate
public NullIsTruePredicate(Predicate predicate)
Constructor that performs no validation.
Use getInstance
if you want that.
predicate
- the predicate to call after the null check
evaluate
public boolean evaluate(Object object)
Evaluates the predicate returning the result of the decorated predicate
once a null check is performed.
- evaluate in interface Predicate
object
- the input object
- true if decorated predicate returns true or input is null
getInstance
public static Predicate getInstance(Predicate predicate)
Factory to create the null true predicate.
predicate
- the predicate to decorate, not null
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