001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     * 
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     * 
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */ 
017    package org.apache.commons.betwixt.expression;
018    
019    /** <p><code>Updater</code> acts like an lvalue which updates the current 
020      * context bean from some text from an XML attribute or element.</p>
021      *
022      * @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
023      * @version $Revision: 438373 $
024      */
025    public interface Updater {
026    
027        /** Updates the current bean context with a new String value.
028         * This is typically used when parsing XML and updating a bean value
029         * from XML 
030         *
031         * @param context update the bean in this <code>Context</code>
032         * @param newValue set value to this <code>Object</code>
033         */
034        public void update(Context context, Object newValue);
035    }