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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  package org.apache.jetspeed.decoration.validators;
18  
19  import java.net.MalformedURLException;
20  
21  import javax.servlet.ServletContext;
22  
23  import org.apache.jetspeed.decoration.ResourceValidator;
24  import org.springframework.web.context.ServletContextAware;
25  
26  /***
27   * This implementation uses <code>ServletContext.getResource()</code>
28   * to verify the existence of a resource.
29   * 
30   * @author <href a="mailto:weaver@apache.org">Scott T. Weaver</a>
31   *
32   */
33  public class WebApplicationResourceValidator implements ResourceValidator, ServletContextAware
34  {
35      private ServletContext servletContext;
36      
37  
38      public boolean resourceExists(String path)
39      {
40          try
41          {
42              return servletContext.getResource(path) != null;
43          }
44          catch (MalformedURLException e)
45          {
46              IllegalArgumentException iae = new IllegalArgumentException(path+" is not a valid path.");
47              iae.initCause(e);
48              throw iae;            
49          }
50      }
51  
52  
53      public void setServletContext(ServletContext servletContext)
54      {
55          this.servletContext = servletContext;
56          
57      }
58  
59  }