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 a {@code ConfigurationDynaBean} from a 033 * wrapped configuration-collection {@link org.apache.commons.configuration2.Configuration} instance. 034 * 035 * @since 1.0-rc1 036 */ 037public class ConfigurationDynaClass implements DynaClass { 038 039 /** The logger. */ 040 private static final Log LOG = LogFactory.getLog(ConfigurationDynaClass.class); 041 042 /** Stores the associated configuration. */ 043 private final Configuration configuration; 044 045 /** 046 * Constructs an instance of a {@code ConfigurationDynaClass} wrapping the specified {@code Configuration} instance. 047 * 048 * @param configuration {@code Configuration} instance. 049 */ 050 public ConfigurationDynaClass(final Configuration configuration) { 051 if (LOG.isTraceEnabled()) { 052 LOG.trace("ConfigurationDynaClass(" + configuration + ")"); 053 } 054 this.configuration = configuration; 055 } 056 057 @Override 058 public DynaProperty[] getDynaProperties() { 059 if (LOG.isTraceEnabled()) { 060 LOG.trace("getDynaProperties()"); 061 } 062 063 final Iterator<String> keys = configuration.getKeys(); 064 final List<DynaProperty> properties = new ArrayList<>(); 065 while (keys.hasNext()) { 066 final String key = keys.next(); 067 final DynaProperty property = getDynaProperty(key); 068 properties.add(property); 069 } 070 071 final DynaProperty[] propertyArray = new DynaProperty[properties.size()]; 072 properties.toArray(propertyArray); 073 if (LOG.isDebugEnabled()) { 074 LOG.debug("Found " + properties.size() + " properties."); 075 } 076 077 return propertyArray; 078 } 079 080 @Override 081 public DynaProperty getDynaProperty(final String name) { 082 if (LOG.isTraceEnabled()) { 083 LOG.trace("getDynaProperty(" + name + ")"); 084 } 085 086 if (name == null) { 087 throw new IllegalArgumentException("Property name must not be null!"); 088 } 089 090 final Object value = configuration.getProperty(name); 091 if (value == null) { 092 return null; 093 } 094 Class<?> type = value.getClass(); 095 096 if (type == Byte.class) { 097 type = Byte.TYPE; 098 } 099 if (type == Character.class) { 100 type = Character.TYPE; 101 } else if (type == Boolean.class) { 102 type = Boolean.TYPE; 103 } else if (type == Double.class) { 104 type = Double.TYPE; 105 } else if (type == Float.class) { 106 type = Float.TYPE; 107 } else if (type == Integer.class) { 108 type = Integer.TYPE; 109 } else if (type == Long.class) { 110 type = Long.TYPE; 111 } else if (type == Short.class) { 112 type = Short.TYPE; 113 } 114 115 return new DynaProperty(name, type); 116 } 117 118 @Override 119 public String getName() { 120 return ConfigurationDynaBean.class.getName(); 121 } 122 123 @Override 124 public DynaBean newInstance() throws IllegalAccessException, InstantiationException { 125 return new ConfigurationDynaBean(configuration); 126 } 127}