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    1   /*
    2    * Licensed to the Apache Software Foundation (ASF) under one or more
    3    * contributor license agreements.  See the NOTICE file distributed with
    4    * this work for additional information regarding copyright ownership.
    5    * The ASF licenses this file to You under the Apache License, Version 2.0
    6    * (the "License"); you may not use this file except in compliance with
    7    * the License.  You may obtain a copy of the License at
    8    *
    9    *     http://www.apache.org/licenses/LICENSE-2.0
    10   *
    11   * Unless required by applicable law or agreed to in writing, software
    12   * distributed under the License is distributed on an "AS IS" BASIS,
    13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    14   * See the License for the specific language governing permissions and
    15   * limitations under the License.
    16   */
    17
    18  package org.apache.commons.configuration.web;
    19
    20  import java.util.Iterator;
    21  import javax.servlet.Servlet;
    22  import javax.servlet.ServletConfig;
    23
    24  import org.apache.commons.collections.iterators.EnumerationIterator;
    25
    26  /***
    27   * A configuration wrapper around a {@link ServletConfig}. This configuration
    28   * is read only, adding or removing a property will throw an
    29   * UnsupportedOperationException.
    30   *
    31   * @author <a href="mailto:ebourg@apache.org">Emmanuel Bourg</a>
    32   * @version $Revision: 515306 $, $Date: 2007-03-06 22:15:00 +0100 (Di, 06 Mrz 2007) $
    33   * @since 1.1
    34   */
    35  public class ServletConfiguration extends BaseWebConfiguration
    36  {
    37      /*** Stores a reference to the wrapped <code>ServletConfig</code>.*/
    38      protected ServletConfig config;
    39
    40      /***
    41       * Create a ServletConfiguration using the initialization parameter of
    42       * the specified servlet.
    43       *
    44       * @param servlet the servlet
    45       */
    46      public ServletConfiguration(Servlet servlet)
    47      {
    48          this(servlet.getServletConfig());
    49      }
    50
    51      /***
    52       * Create a ServletConfiguration using the servlet initialization parameters.
    53       *
    54       * @param config the servlet configuration
    55       */
    56      public ServletConfiguration(ServletConfig config)
    57      {
    58          this.config = config;
    59      }
    60
    61      public Object getProperty(String key)
    62      {
    63          return handleDelimiters(config.getInitParameter(key));
    64      }
    65
    66      public Iterator getKeys()
    67      {
    68          return new EnumerationIterator(config.getInitParameterNames());
    69      }
    70  }