/*

  * 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.beanutils;

 import java.util.Iterator;

 import java.util.ArrayList;

 import java.util.List;

 import org.apache.commons.beanutils.DynaBean;

 import org.apache.commons.beanutils.DynaClass;

 import org.apache.commons.beanutils.DynaProperty;

 import org.apache.commons.configuration.Configuration;

 import org.apache.commons.logging.Log;

 import org.apache.commons.logging.LogFactory;

 /**

  * The <tt>ConfigurationDynaClass</tt> dynamically determines properties for

  * a <code>ConfigurationDynaBean</code> from a wrapped configuration-collection

  * {@link org.apache.commons.configuration.Configuration} instance.

  *

  * @author <a href="mailto:ricardo.gladwell@btinternet.com">Ricardo Gladwell</a>

  * @version $Revision: 439648 $, $Date: 2006-09-02 22:42:10 +0200 (Sa, 02 Sep 2006) $

  * @since 1.0-rc1

  */

 public class ConfigurationDynaClass implements DynaClass

 {

     /** The logger.*/

     private static Log log = LogFactory.getLog(ConfigurationDynaClass.class);

     /** Stores the associated configuration.*/

     private Configuration configuration;

     /**

      * Construct an instance of a <code>ConfigurationDynaClass</code>

      * wrapping the specified <code>Configuration</code> instance.

      * @param configuration <code>Configuration</code> instance.

      */

     public ConfigurationDynaClass(Configuration configuration)

     {

         super();

         if (log.isTraceEnabled())

         {

             log.trace("ConfigurationDynaClass(" + configuration + ")");

         }

         this.configuration = configuration;

     }

     /**

      * @see org.apache.commons.beanutils.DynaClass#getDynaProperty(java.lang.String)

      */

     public DynaProperty getDynaProperty(String name)

     {

         if (log.isTraceEnabled())

         {

             log.trace("getDynaProperty(" + name + ")");

         }

         if (name == null)

         {

             throw new IllegalArgumentException("No such property name=[" + name + "]");

         }

         Object value = configuration.getProperty(name);

         if (value == null)

         {

             return null;

         }

         else

         {

             Class type = value.getClass();

             if (type == Byte.class)

             {

                 type = Byte.TYPE;

             }

             if (type == Character.class)

             {

                 type = Character.TYPE;

             }

             else if (type == Boolean.class)

             {

                 type = Boolean.TYPE;

             }

             else if (type == Double.class)

             {

                 type = Double.TYPE;

             }

             else if (type == Float.class)

             {

                 type = Float.TYPE;

             }

             else if (type == Integer.class)

             {

                 type = Integer.TYPE;

             }

             else if (type == Long.class)

             {

                 type = Long.TYPE;

             }

             else if (type == Short.class)

             {

                 type = Short.TYPE;

             }

             return new DynaProperty(name, type);

         }

     }

     /**

      * @see org.apache.commons.beanutils.DynaClass#getDynaProperties()

      */

     public DynaProperty[] getDynaProperties()

     {

         if (log.isTraceEnabled())

         {

             log.trace("getDynaProperties()");

         }

         Iterator keys = configuration.getKeys();

         List properties = new ArrayList();

         while (keys.hasNext())

         {

             String key = (String) keys.next();

             DynaProperty property = getDynaProperty(key);

             properties.add(property);

         }

         DynaProperty[] propertyArray = new DynaProperty[properties.size()];

         properties.toArray(propertyArray);

         if (log.isDebugEnabled())

         {

             log.debug("Found " + properties.size() + " properties.");

         }

         return propertyArray;

     }

     /**

      * @see org.apache.commons.beanutils.DynaClass#getName()

      */

     public String getName()

     {

         return ConfigurationDynaBean.class.getName();

     }

     /**

      * @see org.apache.commons.beanutils.DynaClass#newInstance()

      */

     public DynaBean newInstance() throws IllegalAccessException, InstantiationException

     {

         return new ConfigurationDynaBean(configuration);

     }

 }