org.apache.commons.collections.functors
Class InstanceofPredicate<T>

java.lang.Object
  org.apache.commons.collections.functors.InstanceofPredicate<T>

All Implemented Interfaces:

Serializable, Predicate<T>

public final class InstanceofPredicate<T>
extends Object
implements Predicate<T>, 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: 1.1.1.1 $ $Date: 2005/05/23 04:34:24 $

Author:

Matt Hall, John Watkinson, Stephen Colebourne

See Also:

Serialized Form

Constructor Summary

InstanceofPredicate(Class<T> type)
Constructor that performs no validation.

Method Summary

boolean	evaluate(T object) Evaluates the predicate returning true if the input object is of the correct type.
static <T> Predicate<T>	getInstance(Class<T> type) Factory to create the identity predicate.
Class<T>	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(Class<T> type)

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

Parameters:

type - the type to check for

Method Detail

getInstance

public static <T> Predicate<T> getInstance(Class<T> type)

Factory to create the identity predicate.

Parameters:

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

Returns:

the predicate

Throws:

IllegalArgumentException - if the class is null

evaluate

public boolean evaluate(T object)

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

Specified by:

evaluate in interface Predicate<T>

Parameters:

object - the input object

Returns:

true if input is of stored type

getType

public Class<T> getType()

Gets the type to compare to.

Returns:

the type

Since:

Commons Collections 3.1