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 * @since 1.0-rc1 037 */ 038public class ConfigurationDynaClass implements DynaClass 039{ 040 /** The logger.*/ 041 private static final Log LOG = LogFactory.getLog(ConfigurationDynaClass.class); 042 043 /** Stores the associated configuration.*/ 044 private final Configuration configuration; 045 046 /** 047 * Construct an instance of a {@code ConfigurationDynaClass} 048 * wrapping the specified {@code Configuration} instance. 049 * @param configuration {@code Configuration} instance. 050 */ 051 public ConfigurationDynaClass(final Configuration configuration) 052 { 053 super(); 054 if (LOG.isTraceEnabled()) 055 { 056 LOG.trace("ConfigurationDynaClass(" + configuration + ")"); 057 } 058 this.configuration = configuration; 059 } 060 061 @Override 062 public DynaProperty getDynaProperty(final String name) 063 { 064 if (LOG.isTraceEnabled()) 065 { 066 LOG.trace("getDynaProperty(" + name + ")"); 067 } 068 069 if (name == null) 070 { 071 throw new IllegalArgumentException("Property name must not be null!"); 072 } 073 074 final Object value = configuration.getProperty(name); 075 if (value == null) 076 { 077 return null; 078 } 079 Class<?> type = value.getClass(); 080 081 if (type == Byte.class) 082 { 083 type = Byte.TYPE; 084 } 085 if (type == Character.class) 086 { 087 type = Character.TYPE; 088 } 089 else if (type == Boolean.class) 090 { 091 type = Boolean.TYPE; 092 } 093 else if (type == Double.class) 094 { 095 type = Double.TYPE; 096 } 097 else if (type == Float.class) 098 { 099 type = Float.TYPE; 100 } 101 else if (type == Integer.class) 102 { 103 type = Integer.TYPE; 104 } 105 else if (type == Long.class) 106 { 107 type = Long.TYPE; 108 } 109 else if (type == Short.class) 110 { 111 type = Short.TYPE; 112 } 113 114 return new DynaProperty(name, type); 115 } 116 117 @Override 118 public DynaProperty[] getDynaProperties() 119 { 120 if (LOG.isTraceEnabled()) 121 { 122 LOG.trace("getDynaProperties()"); 123 } 124 125 final Iterator<String> keys = configuration.getKeys(); 126 final List<DynaProperty> properties = new ArrayList<>(); 127 while (keys.hasNext()) 128 { 129 final String key = keys.next(); 130 final DynaProperty property = getDynaProperty(key); 131 properties.add(property); 132 } 133 134 final DynaProperty[] propertyArray = new DynaProperty[properties.size()]; 135 properties.toArray(propertyArray); 136 if (LOG.isDebugEnabled()) 137 { 138 LOG.debug("Found " + properties.size() + " properties."); 139 } 140 141 return propertyArray; 142 } 143 144 @Override 145 public String getName() 146 { 147 return ConfigurationDynaBean.class.getName(); 148 } 149 150 @Override 151 public DynaBean newInstance() throws IllegalAccessException, InstantiationException 152 { 153 return new ConfigurationDynaBean(configuration); 154 } 155}