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public interface Predicate
Defines a functor interface implemented by classes that perform a predicate test on an object.
A Predicate is the object equivalent of an if statement.
It uses the input object to return a true or false value, and is often used in
validation or filtering.
Standard implementations of common predicates are provided by
PredicateUtils. These include true, false, instanceof, equals, and,
or, not, method invokation and null testing.
| Method Summary | |
|---|---|
boolean |
evaluate(java.lang.Object object)
Use the specified parameter to perform a test that returns true or false. |
| Method Detail |
|---|
boolean evaluate(java.lang.Object object)
object - the object to evaluate, should not be changed
java.lang.ClassCastException - (runtime) if the input is the wrong class
java.lang.IllegalArgumentException - (runtime) if the input is invalid
FunctorException - (runtime) if the predicate encounters a problem
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