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.digester;
018    
019    import java.util.Set;
020    
021    import org.apache.commons.logging.Log;
022    import org.apache.commons.logging.LogFactory;
023    import org.xml.sax.Attributes;
024    import org.xml.sax.SAXException;
025    
026    /** <p><code>HideRule</code> hides the property of the given name.</p>
027      * 
028      * @author <a href="mailto:jstrachan@apache.org">James Strachan</a>
029      * @version $Revision: 438373 $
030      */
031    public class HideRule extends RuleSupport {
032    
033        /** Logger */
034        private static final Log log = LogFactory.getLog( HideRule.class );
035        
036        /** Base constructor */    
037        public HideRule() {
038        }
039        
040        // Rule interface
041        //-------------------------------------------------------------------------    
042        
043        /**
044         * Process the beginning of this element.
045         *
046         * @param attributes The attribute list of this element
047         * @throws SAXException when the mandatory 'property' attribute is missing
048         */
049        public void begin(String name, String namespace, Attributes attributes) throws SAXException {
050            String propertyAttributeValue = attributes.getValue( "property" );
051            if ( propertyAttributeValue == null || propertyAttributeValue.length() == 0 ) {
052                throw new SAXException( 
053                    "<hide> element is missing the mandatory attribute 'property'" );
054            }
055            Set propertySet = getProcessedPropertyNameSet();
056            propertySet.add( propertyAttributeValue );
057        }
058    }