org.apache.commons.collections.functors
Class InstanceofPredicate

java.lang.Object
  org.apache.commons.collections.functors.InstanceofPredicate

All Implemented Interfaces:

java.io.Serializable, Predicate

public final class InstanceofPredicate
extends java.lang.Object
implements Predicate, java.io.Serializable

Predicate implementation that returns true if the input is an instanceof the type stored in this predicate.

Since:

Commons Collections 3.0

Version:

$Revision: 646777 $ $Date: 2008-04-10 13:33:15 +0100 (Thu, 10 Apr 2008) $

Author:

Stephen Colebourne

See Also:

Serialized Form

Constructor Summary

InstanceofPredicate(java.lang.Class type)
Constructor that performs no validation.

Method Summary

boolean	evaluate(java.lang.Object object) Evaluates the predicate returning true if the input object is of the correct type.
static Predicate	getInstance(java.lang.Class type) Factory to create the identity predicate.
java.lang.Class	getType() Gets the type to compare to.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

InstanceofPredicate

public InstanceofPredicate(java.lang.Class type)

Constructor that performs no validation. Use getInstance if you want that.

Parameters:

type - the type to check for

Method Detail

getInstance

public static Predicate getInstance(java.lang.Class type)

Factory to create the identity predicate.

Parameters:

type - the type to check for, may not be null

Returns:

the predicate

Throws:

java.lang.IllegalArgumentException - if the class is null

evaluate

public boolean evaluate(java.lang.Object object)

Evaluates the predicate returning true if the input object is of the correct type.

Specified by:

evaluate in interface Predicate

Parameters:

object - the input object

Returns:

true if input is of stored type

getType

public java.lang.Class getType()

Gets the type to compare to.

Returns:

the type

Since:

Commons Collections 3.1