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 */ 017 018 package org.apache.commons.configuration.beanutils; 019 020 import java.util.ArrayList; 021 import java.util.Iterator; 022 import java.util.List; 023 024 import org.apache.commons.beanutils.DynaBean; 025 import org.apache.commons.beanutils.DynaClass; 026 import org.apache.commons.beanutils.DynaProperty; 027 import org.apache.commons.configuration.Configuration; 028 import org.apache.commons.logging.Log; 029 import org.apache.commons.logging.LogFactory; 030 031 /** 032 * The <tt>ConfigurationDynaClass</tt> dynamically determines properties for 033 * a {@code ConfigurationDynaBean} from a wrapped configuration-collection 034 * {@link org.apache.commons.configuration.Configuration} instance. 035 * 036 * @author <a href="mailto:ricardo.gladwell@btinternet.com">Ricardo Gladwell</a> 037 * @version $Id: ConfigurationDynaClass.java 1208764 2011-11-30 20:41:30Z oheger $ 038 * @since 1.0-rc1 039 */ 040 public class ConfigurationDynaClass implements DynaClass 041 { 042 /** The logger.*/ 043 private static Log log = LogFactory.getLog(ConfigurationDynaClass.class); 044 045 /** Stores the associated configuration.*/ 046 private Configuration configuration; 047 048 /** 049 * Construct an instance of a {@code ConfigurationDynaClass} 050 * wrapping the specified {@code Configuration} instance. 051 * @param configuration {@code Configuration} instance. 052 */ 053 public ConfigurationDynaClass(Configuration configuration) 054 { 055 super(); 056 if (log.isTraceEnabled()) 057 { 058 log.trace("ConfigurationDynaClass(" + configuration + ")"); 059 } 060 this.configuration = configuration; 061 } 062 063 public DynaProperty getDynaProperty(String name) 064 { 065 if (log.isTraceEnabled()) 066 { 067 log.trace("getDynaProperty(" + name + ")"); 068 } 069 070 if (name == null) 071 { 072 throw new IllegalArgumentException("Property name must not be null!"); 073 } 074 075 Object value = configuration.getProperty(name); 076 if (value == null) 077 { 078 return null; 079 } 080 else 081 { 082 Class<?> type = value.getClass(); 083 084 if (type == Byte.class) 085 { 086 type = Byte.TYPE; 087 } 088 if (type == Character.class) 089 { 090 type = Character.TYPE; 091 } 092 else if (type == Boolean.class) 093 { 094 type = Boolean.TYPE; 095 } 096 else if (type == Double.class) 097 { 098 type = Double.TYPE; 099 } 100 else if (type == Float.class) 101 { 102 type = Float.TYPE; 103 } 104 else if (type == Integer.class) 105 { 106 type = Integer.TYPE; 107 } 108 else if (type == Long.class) 109 { 110 type = Long.TYPE; 111 } 112 else if (type == Short.class) 113 { 114 type = Short.TYPE; 115 } 116 117 return new DynaProperty(name, type); 118 } 119 } 120 121 public DynaProperty[] getDynaProperties() 122 { 123 if (log.isTraceEnabled()) 124 { 125 log.trace("getDynaProperties()"); 126 } 127 128 Iterator<String> keys = configuration.getKeys(); 129 List<DynaProperty> properties = new ArrayList<DynaProperty>(); 130 while (keys.hasNext()) 131 { 132 String key = keys.next(); 133 DynaProperty property = getDynaProperty(key); 134 properties.add(property); 135 } 136 137 DynaProperty[] propertyArray = new DynaProperty[properties.size()]; 138 properties.toArray(propertyArray); 139 if (log.isDebugEnabled()) 140 { 141 log.debug("Found " + properties.size() + " properties."); 142 } 143 144 return propertyArray; 145 } 146 147 public String getName() 148 { 149 return ConfigurationDynaBean.class.getName(); 150 } 151 152 public DynaBean newInstance() throws IllegalAccessException, InstantiationException 153 { 154 return new ConfigurationDynaBean(configuration); 155 } 156 }