AJAXResponseImpl xref

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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.ajax;
18  
19  import java.io.Reader;
20  import java.io.Writer;
21  
22  import org.apache.velocity.app.VelocityEngine;
23  import org.apache.velocity.context.Context;
24  
25  /***
26   * Response object used for AJAX services.
27   * 
28   * @author <href a="mailto:weaver@apache.org">Scott T. Weaver</a>
29   *
30   */
31  public class AJAXResponseImpl implements AJAXResponse
32  {   
33  
34      private Context context;
35      private VelocityEngine engine;
36      private Reader template;
37      private Writer output;
38  
39      public AJAXResponseImpl(Context context, VelocityEngine engine, Reader template, Writer output)
40      {
41          this.context = context;
42          this.engine = engine;
43          this.template = template;
44          this.output = output;
45      }
46  
47      /* (non-Javadoc)
48       * @see org.apache.jetspeed.ajax.AJAXResponse#complete()
49       */
50      public void complete() throws AJAXException
51      {
52          try
53          {
54              engine.evaluate(context, output, "AJAX processor", template);
55          }
56          catch (Exception e)
57          {
58              throw new AJAXException("Failed to render velocity xml template: "+e.getMessage(), e);
59          }
60       
61      }
62  
63      
64  
65  }