org.beanfuse.model.predicates.ValidEntityPredicate.java Source code

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Here is the source code for org.beanfuse.model.predicates.ValidEntityPredicate.java

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//$Id: ValidEntityPredicate.java,v 1.1 2006/10/12 14:40:28 chaostone Exp $
/*
 *
 * Copyright c 2005-2009.
 * 
 * Licensed under GNU  LESSER General Public License, Version 3.  
 * http://www.gnu.org/licenses
 * 
 */
/********************************************************************************
 * @author chaostone
 * 
 * MODIFICATION DESCRIPTION
 * 
 * Name                 Date                Description 
 * ============         ============        ============
 * chaostone             2005-11-11         Created
 *  
 ********************************************************************************/

package org.beanfuse.model.predicates;

import java.io.Serializable;

import org.apache.commons.beanutils.PropertyUtils;
import org.apache.commons.collections.Predicate;

import org.beanfuse.model.Entity;

/**
 * ?
 * 
 * @author chaostone
 * 
 */
public class ValidEntityPredicate implements Predicate {

    /**
     * @see org.apache.commons.collections.Predicate#evaluate(java.lang.Object)
     */
    public boolean evaluate(final Object value) {
        if (null == value) {
            return false;
        }
        try {
            Serializable key = (Serializable) PropertyUtils.getProperty(value, ((Entity) value).key());
            return ValidEntityKeyPredicate.getInstance().evaluate(key);
        } catch (Exception e) {
            return false;
        }
    }

    public static final ValidEntityPredicate INSTANCE = new ValidEntityPredicate();

    public static ValidEntityPredicate getInstance() {
        return INSTANCE;
    }
}