com.liferay.util.PropertyComparator.java Source code

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Here is the source code for com.liferay.util.PropertyComparator.java

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/**
 * Copyright (c) 2000-2005 Liferay, LLC. All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */

package com.liferay.util;

import java.lang.reflect.InvocationTargetException;
import java.util.Comparator;

import org.apache.commons.beanutils.PropertyUtils;

import com.dotmarketing.util.Logger;

/**
 * <a href="PropertyComparator.java.html"><b><i>View Source</i></b></a>
 *
 * @author  Patrick Brady
 * @version $Revision: 1.2 $
 *
 */
public class PropertyComparator implements Comparator {

    public PropertyComparator(String propertyName) {
        _propertyNames = new String[] { propertyName };
    }

    public PropertyComparator(String[] propertyNames) {
        _propertyNames = propertyNames;
    }

    public int compare(Object obj1, Object obj2) {
        try {
            for (int i = 0; i < _propertyNames.length; i++) {
                String propertyName = _propertyNames[i];

                Object property1 = PropertyUtils.getProperty(obj1, propertyName);
                Object property2 = PropertyUtils.getProperty(obj2, propertyName);

                if (property1 instanceof String) {
                    int result = property1.toString().compareToIgnoreCase(property2.toString());

                    if (result != 0) {
                        return result;
                    }
                }

                if (property1 instanceof Comparable) {
                    int result = ((Comparable) property1).compareTo(property2);

                    if (result != 0) {
                        return result;
                    }
                }
            }
        } catch (NoSuchMethodException nsme) {
            Logger.error(this, nsme.getMessage(), nsme);
        } catch (InvocationTargetException ite) {
            Logger.error(this, ite.getMessage(), ite);
        } catch (IllegalAccessException iae) {
            Logger.error(this, iae.getMessage(), iae);
        }

        return -1;
    }

    private String[] _propertyNames;

}