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 * @version $Id: ConfigurationDynaClass.java 1842194 2018-09-27 22:24:23Z ggregory $ 038 * @since 1.0-rc1 039 */ 040public class ConfigurationDynaClass implements DynaClass 041{ 042 /** The logger.*/ 043 private static final Log LOG = LogFactory.getLog(ConfigurationDynaClass.class); 044 045 /** Stores the associated configuration.*/ 046 private final 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(final Configuration configuration) 054 { 055 super(); 056 if (LOG.isTraceEnabled()) 057 { 058 LOG.trace("ConfigurationDynaClass(" + configuration + ")"); 059 } 060 this.configuration = configuration; 061 } 062 063 @Override 064 public DynaProperty getDynaProperty(final String name) 065 { 066 if (LOG.isTraceEnabled()) 067 { 068 LOG.trace("getDynaProperty(" + name + ")"); 069 } 070 071 if (name == null) 072 { 073 throw new IllegalArgumentException("Property name must not be null!"); 074 } 075 076 final Object value = configuration.getProperty(name); 077 if (value == null) 078 { 079 return null; 080 } 081 Class<?> type = value.getClass(); 082 083 if (type == Byte.class) 084 { 085 type = Byte.TYPE; 086 } 087 if (type == Character.class) 088 { 089 type = Character.TYPE; 090 } 091 else if (type == Boolean.class) 092 { 093 type = Boolean.TYPE; 094 } 095 else if (type == Double.class) 096 { 097 type = Double.TYPE; 098 } 099 else if (type == Float.class) 100 { 101 type = Float.TYPE; 102 } 103 else if (type == Integer.class) 104 { 105 type = Integer.TYPE; 106 } 107 else if (type == Long.class) 108 { 109 type = Long.TYPE; 110 } 111 else if (type == Short.class) 112 { 113 type = Short.TYPE; 114 } 115 116 return new DynaProperty(name, type); 117 } 118 119 @Override 120 public DynaProperty[] getDynaProperties() 121 { 122 if (LOG.isTraceEnabled()) 123 { 124 LOG.trace("getDynaProperties()"); 125 } 126 127 final Iterator<String> keys = configuration.getKeys(); 128 final List<DynaProperty> properties = new ArrayList<>(); 129 while (keys.hasNext()) 130 { 131 final String key = keys.next(); 132 final DynaProperty property = getDynaProperty(key); 133 properties.add(property); 134 } 135 136 final DynaProperty[] propertyArray = new DynaProperty[properties.size()]; 137 properties.toArray(propertyArray); 138 if (LOG.isDebugEnabled()) 139 { 140 LOG.debug("Found " + properties.size() + " properties."); 141 } 142 143 return propertyArray; 144 } 145 146 @Override 147 public String getName() 148 { 149 return ConfigurationDynaBean.class.getName(); 150 } 151 152 @Override 153 public DynaBean newInstance() throws IllegalAccessException, InstantiationException 154 { 155 return new ConfigurationDynaBean(configuration); 156 } 157}