org.yes.cart.utils.impl.AttrValueDTOComparatorImpl.java Source code

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Here is the source code for org.yes.cart.utils.impl.AttrValueDTOComparatorImpl.java

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/*
 * Copyright 2009 Denys Pavlov, Igor Azarnyi
 *
 *    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 org.yes.cart.utils.impl;

import org.apache.commons.lang.StringUtils;
import org.yes.cart.domain.dto.AttrValueDTO;

import java.util.Comparator;

/**
 *
 * Compare two attr values dto by attribute name.
 *
 * User: Igor Azarny iazarny@yahoo.com
 * Date: 09-May-2011
 * Time: 14:12:54
 */
public class AttrValueDTOComparatorImpl implements Comparator<AttrValueDTO> {

    /**
     * {@inheritDoc}
     */
    public int compare(final AttrValueDTO attrValueDTO1, final AttrValueDTO attrValueDTO2) {

        final String name1;
        final String name2;

        if (attrValueDTO1.getAttributeDTO() == null) {
            name1 = StringUtils.EMPTY;
        } else {
            name1 = attrValueDTO1.getAttributeDTO().getName();
        }

        if (attrValueDTO2.getAttributeDTO() == null) {
            name2 = StringUtils.EMPTY;
        } else {
            name2 = attrValueDTO2.getAttributeDTO().getName();
        }

        return name1.compareTo(name2);
    }
}