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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.profiler.rules.impl;
18  
19  import org.apache.jetspeed.profiler.rules.ProfilingRule;
20  import org.apache.jetspeed.profiler.rules.RuleCriterion;
21  import org.apache.jetspeed.profiler.rules.RuleCriterionResolver;
22  import org.apache.jetspeed.request.RequestContext;
23  
24  /***
25   * Standard Jetspeed-1 Group/Role/User resolver.
26   * First looking for a group request parameter, then a role request parameter,
27   * then a user request parameter. If none are found, then it uses the 
28   * current user's principal.
29   * 
30   * If it is null, it then falls back to a request parameter.
31   * If it is null it gives up and returns null allowing subclasses
32   * to continue processing.
33   * 
34   * Since there is no 1:1 value for a combination rule of group, the criterion's
35   * value is ignored.
36   *
37   * @author <a href="mailto:taylor@apache.org">David Sean Taylor</a>
38   * @version $Id: GroupRoleUserCriterionResolver.java 516448 2007-03-09 16:25:47Z ate $
39   */
40  public class GroupRoleUserCriterionResolver
41      extends UserCriterionResolver
42      implements RuleCriterionResolver
43  {    
44      /* (non-Javadoc)
45       * @see org.apache.jetspeed.profiler.rules.RuleCriterionResolver#resolve(org.apache.jetspeed.request.RequestContext, org.apache.jetspeed.profiler.rules.RuleCriterion)
46       */    
47      public String resolve(RequestContext context, RuleCriterion criterion)
48      {
49          String value = context.getRequestParameter(ProfilingRule.STANDARD_GROUP);
50          if (value != null)
51          {
52              criterion.setName(ProfilingRule.STANDARD_GROUP);
53              return value;
54          }
55          value = context.getRequestParameter(ProfilingRule.STANDARD_ROLE);
56          if (value != null)
57          {
58              criterion.setName(ProfilingRule.STANDARD_ROLE);            
59              return value;
60          }
61  
62          // use the User Criterion to resolve it        
63          criterion.setName(ProfilingRule.STANDARD_USER);
64          return super.resolve(context, criterion);
65       }
66      
67      
68      
69  }