org.tinygroup.mongodb.engine.comparemode.impl.LengthNotEqualsCompareMode.java Source code

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Here is the source code for org.tinygroup.mongodb.engine.comparemode.impl.LengthNotEqualsCompareMode.java

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/**
 *  Copyright (c) 1997-2013, www.tinygroup.org (luo_guo@icloud.com).
 *
 *  Licensed under the GPL, Version 3.0 (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.gnu.org/licenses/gpl.html
 *
 *  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.tinygroup.mongodb.engine.comparemode.impl;

import java.util.regex.Pattern;

import org.bson.BSONObject;

import com.mongodb.BasicDBObject;
import com.mongodb.QueryOperators;

/**
 * 
 * :  ?
 * <p>
    
 * ?: renhui <br>
 * ?: 2013-11-27 <br>
 * <br>
 */
public class LengthNotEqualsCompareMode extends AbstractLengthCompareMode {

    public String getCompareKey() {
        return "lengthNotEquals";
    }

    protected BSONObject lengthBSONObject(String propertyName, int lengthValue) {
        Pattern pattern = Pattern.compile("^.{" + lengthValue + "}$", Pattern.MULTILINE);
        return new BasicDBObject(propertyName,
                new BasicDBObject(QueryOperators.NE, new BasicDBObject("$regex", pattern)));
    }

}