001    // Copyright 2004, 2005 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.hivemind.schema.rules;
016    
017    import org.apache.hivemind.Element;
018    import org.apache.hivemind.impl.BaseLocatable;
019    import org.apache.hivemind.schema.Rule;
020    import org.apache.hivemind.schema.SchemaProcessor;
021    
022    /**
023     * Base class for implementing {@link org.apache.hivemind.schema.Rule}s.
024     *
025     * @author Howard Lewis Ship
026     */
027    public abstract class BaseRule extends BaseLocatable implements Rule
028    {
029        /**
030         * Does nothing; subclasses may override.
031         */
032        public void begin(SchemaProcessor processor, Element element)
033        {
034    
035        }
036    
037        /**
038         * Does nothing; subclasses may override.
039         */
040        public void end(SchemaProcessor processor, Element element)
041        {
042    
043        }
044    
045    }