org.apache.commons.collections.functors.EqualPredicate Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.commons.collections.functors;
import java.io.Serializable;
import org.apache.commons.collections.Predicate;
/**
* Predicate implementation that returns true if the input is the same object
* as the one stored in this predicate by equals.
*
* @since Commons Collections 3.0
* @version $Revision: 646777 $ $Date: 2008-04-10 14:33:15 +0200 (Thu, 10 Apr 2008) $
*
* @author Stephen Colebourne
*/
public final class EqualPredicate implements Predicate, Serializable {
/** Serial version UID */
private static final long serialVersionUID = 5633766978029907089L;
/** The value to compare to */
private final Object iValue;
/**
* Factory to create the identity predicate.
*
* @param object the object to compare to
* @return the predicate
* @throws IllegalArgumentException if the predicate is null
*/
public static Predicate getInstance(Object object) {
if (object == null) {
return NullPredicate.INSTANCE;
}
return new EqualPredicate(object);
}
/**
* Constructor that performs no validation.
* Use getInstance if you want that.
*
* @param object the object to compare to
*/
public EqualPredicate(Object object) {
super();
iValue = object;
}
/**
* Evaluates the predicate returning true if the input equals the stored value.
*
* @param object the input object
* @return true if input object equals stored value
*/
public boolean evaluate(Object object) {
return (iValue.equals(object));
}
/**
* Gets the value.
*
* @return the value
* @since Commons Collections 3.1
*/
public Object getValue() {
return iValue;
}
}