0.8.1-rc1/xmlps/src/main/java/org/apache/oodt/xmlps/queryparser/WildcardLiteral.java

/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.apache.oodt.xmlps.queryparser;

/**
 * 
 * A wildcard literal.
 */
public class WildcardLiteral extends Literal {

    /**
     * @param val
     */
    public WildcardLiteral(String val) {
        super(val);
    }

    /*
     * (non-Javadoc)
     * 
     * @see org.apache.oodt.xmlps.queryparser.Literal#evaluate()
     */
    @Override
    public String evaluate() {
        if(val.startsWith("'")){
          return "'%"+val.substring(1, val.length()-1)+"%'";
        }
        else return "%" + val + "%";
    }

}