001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one
003     * or more contributor license agreements. See the NOTICE file
004     * distributed with this work for additional information
005     * regarding copyright ownership. The ASF licenses this file
006     * to you under the Apache License, Version 2.0 (the  "License");
007     * you may not use this file except in compliance with the License.
008     * You may obtain a copy of the License at
009     *
010     *     http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing, software
013     * distributed under the License is distributed on an "AS IS" BASIS,
014     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015     * See the License for the specific language governing permissions and
016     * limitations under the License.
017     */
018    /*
019     * $Id: ExpressionOwner.java 468655 2006-10-28 07:12:06Z minchau $
020     */
021    package org.apache.xpath;
022    
023    /**
024     * Classes that implement this interface own an expression, which 
025     * can be rewritten.
026     */
027    public interface ExpressionOwner
028    {
029      /**
030       * Get the raw Expression object that this class wraps.
031       *
032       * @return the raw Expression object, which should not normally be null.
033       */
034      public Expression getExpression();
035    
036      /**
037       * Set the raw expression object for this object.
038       *
039       * @param exp the raw Expression object, which should not normally be null.
040       */
041      public void setExpression(Expression exp);
042    
043    
044    }
045