com.discursive.jccook.collections.predicate.PropertyPredicate.java Source code

Introduction

Here is the source code for com.discursive.jccook.collections.predicate.PropertyPredicate.java

Source

/* 
 * ========================================================================
 * 
 * Copyright 2005 Tim O'Brien.
 *
 * Licensed 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 com.discursive.jccook.collections.predicate;

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

public class PropertyPredicate implements Predicate {

    private String property;
    private Object matchValue = null;

    public PropertyPredicate(String property) {
        this.property = property;
    }

    public PropertyPredicate(String property, Object matchValue) {
        this.property = property;
        this.matchValue = matchValue;
    }

    public boolean evaluate(Object object) {
        boolean propertyFound = false;
        try {
            Object value = PropertyUtils.getProperty(object, property);
            if (value != null) {
                if (matchValue != null) {
                    propertyFound = matchValue.equals(value);
                } else {
                    propertyFound = true;
                }
            }
        } catch (Exception e) {
            // If there was an exception, the predicate returns false
        }
        return propertyFound;
    }
}