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1   /*
2    * Copyright 2008 Hippo
3    *
4    * Licensed under the Apache License, Version 2.0 (the  "License"); 
5    * you may not use this file except in compliance with the License. 
6    * You may obtain a copy of the License at
7    *
8    * http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" 
12   * BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
13   * See the License for the specific language governing permissions and 
14   * limitations under the License.
15   */
16  package nl.hippo.client.webapp;
17  
18  import java.util.ArrayList;
19  import java.util.Iterator;
20  import java.util.List;
21  
22  import nl.hippo.client.webapp.matchers.AdminMatcher;
23  import nl.hippo.client.webapp.matchers.BinariesMatcher;
24  import nl.hippo.client.webapp.matchers.ContentMatcher;
25  import nl.hippo.client.webapp.matchers.DeleteQueryMatcher;
26  import nl.hippo.client.webapp.matchers.GetQueryMatcher;
27  import nl.hippo.client.webapp.matchers.Matcher;
28  import nl.hippo.client.webapp.matchers.QueryMatcher;
29  
30  public class Pipeline {
31  
32      private List matchers;
33  
34      public Pipeline() {
35          matchers = new ArrayList();
36          addMatcher(new QueryMatcher());
37          addMatcher(new GetQueryMatcher());
38          addMatcher(new DeleteQueryMatcher());
39          addMatcher(new AdminMatcher());
40          addMatcher(new BinariesMatcher());
41          addMatcher(new ContentMatcher());
42      }
43  
44      public void addMatcher(Matcher matcher) {
45          matchers.add(matcher);
46      }
47  
48      public Matcher getMatcher(Request request) {
49          Iterator it = matchers.iterator();
50          while (it.hasNext()) {
51              Matcher matcher = (Matcher) it.next();
52              if (matcher.matches(request)) {
53                  return matcher;
54              }
55          }
56          return new ContentMatcher();
57      }
58  
59      public Iterator iterator() {
60          return matchers.iterator();
61      }
62  }