View Javadoc

1   /*
2    *  Licensed to the Apache Software Foundation (ASF) under one
3    *  or more contributor license agreements.  See the NOTICE file
4    *  distributed with this work for additional information
5    *  regarding copyright ownership.  The ASF licenses this file
6    *  to you under the Apache License, Version 2.0 (the
7    *  "License"); you may not use this file except in compliance
8    *  with the License.  You may obtain a copy of the License at
9    *  
10   *    http://www.apache.org/licenses/LICENSE-2.0
11   *  
12   *  Unless required by applicable law or agreed to in writing,
13   *  software distributed under the License is distributed on an
14   *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15   *  KIND, either express or implied.  See the License for the
16   *  specific language governing permissions and limitations
17   *  under the License. 
18   *  
19   */
20  package org.apache.directory.server.core.subtree;
21  
22  
23  import java.util.HashMap;
24  import java.util.Iterator;
25  import java.util.Map;
26  
27  import org.apache.directory.shared.ldap.subtree.SubtreeSpecification;
28  
29  
30  /**
31   * A cache for subtree specifications.
32   *
33   * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
34   * @version $Rev$
35   */
36  public class SubentryCache
37  {
38      private final Map<String, Subentry> name2subentry = new HashMap<String, Subentry>();
39      
40      
41      final Subentry getSubentry( String normalizedName )
42      {
43          return name2subentry.get( normalizedName );
44      }
45      
46      
47      final Subentry removeSubentry( String normalizedName )
48      {
49          return  name2subentry.remove( normalizedName );
50      }
51      
52      
53      final Subentry setSubentry( String normalizedName, SubtreeSpecification ss, int types )
54      {
55          Subentry old = name2subentry.get( normalizedName );
56          Subentry subentry = new Subentry();
57          subentry.setSubtreeSpecification( ss );
58          subentry.setTypes( types );
59          name2subentry.put( normalizedName, subentry );
60          return old;
61      }
62      
63      
64      final boolean hasSubentry( String normalizedName )
65      {
66          return name2subentry.containsKey( normalizedName );
67      }
68      
69      
70      final Iterator<String> nameIterator()
71      {
72          return name2subentry.keySet().iterator();
73      }
74  }