| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.commons.configuration; |
| |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Properties; |
| import java.util.Vector; |
| |
| import org.apache.commons.collections.ExtendedProperties; |
| import org.apache.commons.lang.StringUtils; |
| |
| /** |
| * Configuration converter. Helper class to convert between Configuration, |
| * ExtendedProperties and standard Properties. |
| * |
| * @author <a href="mailto:mpoeschl@marmot.at">Martin Poeschl</a> |
| * @version $Revision$, $Date$ |
| */ |
| public final class ConfigurationConverter |
| { |
| /** |
| * Private constructor prevents instances from being created. |
| */ |
| private ConfigurationConverter() |
| { |
| // to prevent instanciation... |
| } |
| |
| /** |
| * Convert a ExtendedProperties class into a Configuration class. |
| * |
| * @param eprops ExtendedProperties object to convert |
| * @return Configuration created from the ExtendedProperties |
| */ |
| public static Configuration getConfiguration(ExtendedProperties eprops) |
| { |
| return new MapConfiguration(eprops); |
| } |
| |
| /** |
| * Convert a standard Properties class into a configuration class. |
| * |
| * @param props properties object to convert |
| * @return Configuration configuration created from the Properties |
| */ |
| public static Configuration getConfiguration(Properties props) |
| { |
| return new MapConfiguration(props); |
| } |
| |
| /** |
| * Convert a Configuration class into a ExtendedProperties class. |
| * |
| * @param config Configuration object to convert |
| * @return ExtendedProperties created from the Configuration |
| */ |
| public static ExtendedProperties getExtendedProperties(Configuration config) |
| { |
| ExtendedProperties props = new ExtendedProperties(); |
| |
| Iterator keys = config.getKeys(); |
| |
| while (keys.hasNext()) |
| { |
| String key = (String) keys.next(); |
| Object property = config.getProperty(key); |
| |
| // turn lists into vectors |
| if (property instanceof List) |
| { |
| property = new Vector((List) property); |
| } |
| |
| props.setProperty(key, property); |
| } |
| |
| return props; |
| } |
| |
| /** |
| * Convert a Configuration class into a Properties class. List properties |
| * are joined into a string using the delimiter of the configuration if it |
| * extends AbstractConfiguration, and a comma otherwise. |
| * |
| * @param config Configuration object to convert |
| * @return Properties created from the Configuration |
| */ |
| public static Properties getProperties(Configuration config) |
| { |
| Properties props = new Properties(); |
| |
| char delimiter = (config instanceof AbstractConfiguration) |
| ? ((AbstractConfiguration) config).getListDelimiter() : ','; |
| |
| Iterator keys = config.getKeys(); |
| while (keys.hasNext()) |
| { |
| String key = (String) keys.next(); |
| List list = config.getList(key); |
| |
| // turn the list into a string |
| props.setProperty(key, StringUtils.join(list.iterator(), delimiter)); |
| } |
| |
| return props; |
| } |
| |
| /** |
| * Convert a Configuration class into a Map class. |
| * |
| * @param config Configuration object to convert |
| * @return Map created from the Configuration |
| */ |
| public static Map getMap(Configuration config) |
| { |
| return new ConfigurationMap(config); |
| } |
| |
| } |