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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.FilterConfig;
22  
23  import org.apache.commons.collections.iterators.EnumerationIterator;
24  
25  /***
26   * A configuration wrapper around a {@link FilterConfig}. This configuration is
27   * read only, adding or removing a property will throw an
28   * UnsupportedOperationException.
29   *
30   * @author <a href="mailto:ebourg@apache.org">Emmanuel Bourg</a>
31   * @version $Revision: 515306 $, $Date: 2007-03-06 22:15:00 +0100 (Di, 06 Mrz 2007) $
32   * @since 1.1
33   */
34  public class ServletFilterConfiguration extends BaseWebConfiguration
35  {
36      /*** Stores the wrapped filter config.*/
37      protected FilterConfig config;
38  
39      /***
40       * Create a ServletFilterConfiguration using the filter initialization parameters.
41       *
42       * @param config the filter configuration
43       */
44      public ServletFilterConfiguration(FilterConfig config)
45      {
46          this.config = config;
47      }
48  
49      public Object getProperty(String key)
50      {
51          return handleDelimiters(config.getInitParameter(key));
52      }
53  
54      public Iterator getKeys()
55      {
56          return new EnumerationIterator(config.getInitParameterNames());
57      }
58  }