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.betwixt.XMLIntrospector; 022 import org.apache.commons.digester.Rule; 023 import org.apache.commons.logging.Log; 024 import org.apache.commons.logging.LogFactory; 025 026 /** <p><code>RuleSupport</code> is an abstract base class containing useful 027 * helper methods.</p> 028 * 029 * @author <a href="mailto:jstrachan@apache.org">James Strachan</a> 030 * @version $Revision: 493795 $ 031 */ 032 public class RuleSupport extends Rule { 033 034 /** Logger */ 035 private static final Log log = LogFactory.getLog( RuleSupport.class ); 036 /** Base constructor */ 037 public RuleSupport() { 038 } 039 040 041 042 // Implementation methods 043 //------------------------------------------------------------------------- 044 /** 045 * Gets <code>XMLBeanInfoDigester</code> using this rule. 046 * 047 * @return <code>XMLBeanInfoDigester</code> for this rule 048 */ 049 protected XMLBeanInfoDigester getXMLInfoDigester() { 050 return (XMLBeanInfoDigester) getDigester(); 051 } 052 053 /** 054 * Gets <code>XMLIntrospector</code> to be used for introspection 055 * 056 * @return <code>XMLIntrospector</code> to use 057 */ 058 protected XMLIntrospector getXMLIntrospector() { 059 return getXMLInfoDigester().getXMLIntrospector(); 060 } 061 062 /** 063 * Gets the class of the bean whose .betwixt file is being digested 064 * 065 * @return the <code>Class</code> of the bean being processed 066 */ 067 protected Class getBeanClass() { 068 return getXMLInfoDigester().getBeanClass(); 069 } 070 071 /** 072 * Gets the property names already processed 073 * 074 * @return the set of property names that have been processed so far 075 */ 076 protected Set getProcessedPropertyNameSet() { 077 return getXMLInfoDigester().getProcessedPropertyNameSet(); 078 } 079 080 081 082 /** 083 * Loads the given class using an appropriate <code>ClassLoader</code>. 084 * Uses {@link org.apache.commons.digester.Digester#getClassLoader()}. 085 * @param className names the class to be loaded 086 * @return <code>Class</code> loaded, not null 087 * @throws ClassNotFoundException 088 */ 089 protected Class loadClass(String className) throws ClassNotFoundException { 090 ClassLoader classloader = digester.getClassLoader(); 091 Class clazz = null; 092 if (classloader == null) { 093 clazz = Class.forName(className); 094 } else { 095 clazz = classloader.loadClass(className); 096 } 097 return clazz; 098 } 099 }