AJAXValve xref

This project has retired. For details please refer to its Attic page.
AJAXValve xref

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.ajax;
18  
19  import javax.servlet.http.HttpServletResponse;
20  
21  import org.apache.jetspeed.layout.PortletActionSecurityBehavior;
22  import org.apache.jetspeed.pipeline.PipelineException;
23  import org.apache.jetspeed.pipeline.valve.AbstractValve;
24  import org.apache.jetspeed.pipeline.valve.ValveContext;
25  import org.apache.jetspeed.request.RequestContext;
26  
27  /***
28   * This should eventually replace the AJAX ServletFilter.
29   * 
30   * @author <href a="mailto:weaver@apache.org">Scott T. Weaver </a>
31   * 
32   */
33  public class AJAXValve extends AbstractValve
34  {
35      private AJAXService ajaxService;
36      private PortletActionSecurityBehavior securityBehavior;
37      
38      public AJAXValve(AJAXService service, PortletActionSecurityBehavior securityBehavior)
39      {
40          super();
41          this.ajaxService = service;
42          this.securityBehavior = securityBehavior;
43      }
44          
45      public void invoke( RequestContext request, ValveContext context )
46          throws PipelineException
47      {
48          HttpServletResponse response = request.getResponse(); 
49          try
50          {
51              response.setContentType("text/xml");  
52              if (!securityBehavior.checkAccess(request, "edit"))
53              {
54                  throw new AJAXException("Access Denied.");
55              }
56              AJAXRequest ajaxRequest = new AJAXRequestImpl(request.getRequest(), response, request.getConfig().getServletContext());
57              ajaxService.processRequest(ajaxRequest);
58          }
59          catch (AJAXException e)
60          {
61              try
62              {
63                  response.sendError(500, e.getMessage());
64              }
65              catch (Exception e2)
66              {
67                  throw new PipelineException(e2.getMessage(), e2);
68              }
69          }
70          catch(Exception e)
71          {
72              throw new PipelineException(e.getMessage(), e);
73          }
74          
75          // Pass control to the next Valve in the Pipeline
76          context.invokeNext(request);
77      }
78  
79      public String toString()
80      {
81          return "AJAXValve";
82      }
83  
84      
85      
86  }