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1   /*
2    *   Copyright 2004 The Apache Software Foundation
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" BASIS,
12   *   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   */
17  package org.apache.ldap.server.schema;
18  
19  
20  import javax.naming.NamingException;
21  import java.util.Iterator;
22  import java.util.List;
23  
24  
25  /***
26   * Object identifier registry.
27   *
28   * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
29   * @version $Rev: 159259 $
30   */
31  public interface OidRegistry
32  {
33      /***
34       * Gets the object identifier for a common name or returns the argument
35       * as-is if it is an object identifier.
36       * 
37       * @param name the name to lookup an OID for
38       * @return the OID string associated with a name
39       * @throws NamingException if name does not map to an OID
40       */
41      String getOid( String name ) throws NamingException;
42  
43      /***
44       * Checks to see if an identifier, oid or name exists within this registry.
45       *
46       * @param id the oid or name to look for
47       * @return true if the id exists false otherwise
48       */
49      boolean hasOid( String id );
50  
51      /***
52       * Gets the primary name associated with an OID.  The primary name is the
53       * first name specified for the OID.
54       * 
55       * @param oid the object identifier
56       * @return the primary name
57       * @throws NamingException if oid does not exist
58       */
59      String getPrimaryName( String oid ) throws NamingException;
60      
61      /***
62       * Gets the names associated with an OID.  An OID is unique however it may 
63       * have many names used to refer to it.  A good example is the cn and
64       * commonName attribute names for OID 2.5.4.3.  Within a server one name 
65       * within the set must be chosen as the primary name.  This is used to
66       * name certain things within the server internally.  If there is more than
67       * one name then the first name is taken to be the primary.
68       * 
69       * @param oid the OID for which we return the set of common names
70       * @return a sorted set of names
71       * @throws NamingException if oid does not exist
72       */
73      List getNameSet( String oid ) throws NamingException;
74      
75      /***
76       * Lists all the OIDs within the registry.  This may be a really big list.
77       * 
78       * @return all the OIDs registered
79       */
80      Iterator list();
81      
82      /***
83       * Adds an OID name pair to the registry.
84       * 
85       * @param name the name to associate with the OID
86       * @param oid the OID to add or associate a new name with
87       */
88      void register( String name, String oid );
89  }