org.sakaiproject.conditions.impl.NullPredicate.java Source code

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Here is the source code for org.sakaiproject.conditions.impl.NullPredicate.java

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/**********************************************************************************
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 *
 * Copyright (c) 2003, 2004, 2005, 2006, 2007, 2008 Sakai Foundation
 *
 * Licensed under the Educational Community 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
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 *       http://www.opensource.org/licenses/ECL-2.0
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 * Unless required by applicable law or agreed to in writing, software
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package org.sakaiproject.conditions.impl;

import org.apache.commons.collections.Predicate;

public class NullPredicate implements Predicate {

    public boolean evaluate(Object object) {
        throw new IllegalStateException(
                "Cannot call evaluate() on a NullPredicate. NullPredicate is a placeholder only.");
    }

}