/*

  * 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.web;

 import java.util.Iterator;

 import java.util.List;

 import javax.servlet.Servlet;

 import javax.servlet.ServletContext;

 import org.apache.commons.collections.iterators.EnumerationIterator;

 import org.apache.commons.configuration.PropertyConverter;

 /**

  * A configuration wrapper to read the initialization parameters of a servlet

  * context. This configuration is read only, adding or removing a property will

  * throw an UnsupportedOperationException.

  *

  * @author <a href="mailto:ebourg@apache.org">Emmanuel Bourg</a>

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

  * @since 1.1

  */

 public class ServletContextConfiguration extends BaseWebConfiguration

 {

     /** Stores the wrapped servlet context.*/

     protected ServletContext context;

     /**

      * Create a ServletContextConfiguration using the context of

      * the specified servlet.

      *

      * @param servlet the servlet

      */

     public ServletContextConfiguration(Servlet servlet)

     {

         this.context = servlet.getServletConfig().getServletContext();

     }

     /**

      * Create a ServletContextConfiguration using the servlet context

      * initialization parameters.

      *

      * @param context the servlet context

      */

     public ServletContextConfiguration(ServletContext context)

     {

         this.context = context;

     }

     public Object getProperty(String key)

     {

         Object value = context.getInitParameter(key);

         if (!isDelimiterParsingDisabled())

         {

             List list = PropertyConverter.split((String) value, getListDelimiter());

             value = list.size() > 1 ? list : value;

         }

         return value;

     }

     public Iterator getKeys()

     {

         return new EnumerationIterator(context.getInitParameterNames());

     }

 }