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1   package org.apache.velocity.tools.view;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *   http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  import java.util.Enumeration;
23  import javax.servlet.ServletConfig;
24  import javax.servlet.ServletContext;
25  
26  /**
27   * Implements {@link JeeConfig} with a {@link ServletConfig}.
28   *
29   * @version $Id$
30   * @since 2.0
31   */
32  public class JeeServletConfig implements JeeConfig
33  {
34      protected ServletConfig servlet;
35  
36      public JeeServletConfig(ServletConfig servlet)
37      {
38          if (servlet == null)
39          {
40              throw new NullPointerException("ServletConfig should not be null; there must be a way to get a ServletContext");
41          }
42          this.servlet = servlet;
43      }
44  
45      /** {@inheritDoc} */
46      public String getInitParameter(String name)
47      {
48          return servlet.getInitParameter(name);
49      }
50  
51      /** {@inheritDoc} */
52      public String findInitParameter(String key)
53      {
54          String param = getInitParameter(key);
55          if (param == null)
56          {
57              param = getServletContext().getInitParameter(key);
58          }
59          return param;
60      }
61  
62      /** {@inheritDoc} */
63      public Enumeration getInitParameterNames()
64      {
65          return servlet.getInitParameterNames();
66      }
67  
68      /** {@inheritDoc} */
69      public String getName()
70      {
71          return servlet.getServletName();
72      }
73  
74      /** {@inheritDoc} */
75      public ServletContext getServletContext()
76      {
77          return servlet.getServletContext();
78      }
79  
80  }