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 018package org.apache.commons.configuration2.beanutils; 019 020import java.util.ArrayList; 021import java.util.Iterator; 022import java.util.List; 023 024import org.apache.commons.beanutils.DynaBean; 025import org.apache.commons.beanutils.DynaClass; 026import org.apache.commons.beanutils.DynaProperty; 027import org.apache.commons.configuration2.Configuration; 028import org.apache.commons.logging.Log; 029import org.apache.commons.logging.LogFactory; 030 031/** 032 * The {@code ConfigurationDynaClass} dynamically determines properties for 033 * a {@code ConfigurationDynaBean} from a wrapped configuration-collection 034 * {@link org.apache.commons.configuration2.Configuration} instance. 035 * 036 * @author <a href="mailto:ricardo.gladwell@btinternet.com">Ricardo Gladwell</a> 037 * @since 1.0-rc1 038 */ 039public class ConfigurationDynaClass implements DynaClass 040{ 041 /** The logger.*/ 042 private static final Log LOG = LogFactory.getLog(ConfigurationDynaClass.class); 043 044 /** Stores the associated configuration.*/ 045 private final Configuration configuration; 046 047 /** 048 * Construct an instance of a {@code ConfigurationDynaClass} 049 * wrapping the specified {@code Configuration} instance. 050 * @param configuration {@code Configuration} instance. 051 */ 052 public ConfigurationDynaClass(final Configuration configuration) 053 { 054 super(); 055 if (LOG.isTraceEnabled()) 056 { 057 LOG.trace("ConfigurationDynaClass(" + configuration + ")"); 058 } 059 this.configuration = configuration; 060 } 061 062 @Override 063 public DynaProperty getDynaProperty(final 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 final Object value = configuration.getProperty(name); 076 if (value == null) 077 { 078 return null; 079 } 080 Class<?> type = value.getClass(); 081 082 if (type == Byte.class) 083 { 084 type = Byte.TYPE; 085 } 086 if (type == Character.class) 087 { 088 type = Character.TYPE; 089 } 090 else if (type == Boolean.class) 091 { 092 type = Boolean.TYPE; 093 } 094 else if (type == Double.class) 095 { 096 type = Double.TYPE; 097 } 098 else if (type == Float.class) 099 { 100 type = Float.TYPE; 101 } 102 else if (type == Integer.class) 103 { 104 type = Integer.TYPE; 105 } 106 else if (type == Long.class) 107 { 108 type = Long.TYPE; 109 } 110 else if (type == Short.class) 111 { 112 type = Short.TYPE; 113 } 114 115 return new DynaProperty(name, type); 116 } 117 118 @Override 119 public DynaProperty[] getDynaProperties() 120 { 121 if (LOG.isTraceEnabled()) 122 { 123 LOG.trace("getDynaProperties()"); 124 } 125 126 final Iterator<String> keys = configuration.getKeys(); 127 final List<DynaProperty> properties = new ArrayList<>(); 128 while (keys.hasNext()) 129 { 130 final String key = keys.next(); 131 final DynaProperty property = getDynaProperty(key); 132 properties.add(property); 133 } 134 135 final DynaProperty[] propertyArray = new DynaProperty[properties.size()]; 136 properties.toArray(propertyArray); 137 if (LOG.isDebugEnabled()) 138 { 139 LOG.debug("Found " + properties.size() + " properties."); 140 } 141 142 return propertyArray; 143 } 144 145 @Override 146 public String getName() 147 { 148 return ConfigurationDynaBean.class.getName(); 149 } 150 151 @Override 152 public DynaBean newInstance() throws IllegalAccessException, InstantiationException 153 { 154 return new ConfigurationDynaBean(configuration); 155 } 156}