AggregatorValve 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  
18  package org.apache.jetspeed.aggregator;
19  
20  import org.apache.jetspeed.pipeline.PipelineException;
21  import org.apache.jetspeed.pipeline.valve.AbstractValve;
22  import org.apache.jetspeed.pipeline.valve.ValveContext;
23  import org.apache.jetspeed.request.RequestContext;
24  
25  /***
26   * Invokes the aggregator service in the request pipeline
27   *
28   * @author <a href="mailto:david@bluesunrise.com">David Sean Taylor</a>
29   * @version $Id: AggregatorValve.java 517124 2007-03-12 08:10:25Z ate $
30   */
31  public class AggregatorValve
32         extends AbstractValve
33  {
34      private Aggregator aggregator;
35      
36      public AggregatorValve(Aggregator aggregator)
37      {
38          this.aggregator = aggregator;
39      }
40          
41      public void invoke( RequestContext request, ValveContext context )
42          throws PipelineException
43      {
44          try
45          {
46              aggregator.build(request);
47          }
48          catch (Exception e)
49          {
50              throw new PipelineException(e.toString(), e);
51          }
52          // Pass control to the next Valve in the Pipeline
53          context.invokeNext( request );
54      }
55  
56      public String toString()
57      {
58          return "AggregatorValve";
59      }
60  }