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.interceptor.context;
21
22
23 import org.apache.directory.server.core.CoreSession;
24 import org.apache.directory.shared.ldap.name.LdapDN;
25
26
27 /**
28 * An EmptySuffix context used for Interceptors. It contains no data, and mask
29 * the DN in AbstractOperationContext
30 *
31 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
32 * @version $Rev$, $Date$
33 */
34 public abstract class EmptyOperationContext extends AbstractOperationContext
35 {
36 /**
37 * Creates a new instance of EmptyOperationContext.
38 */
39 public EmptyOperationContext( CoreSession session )
40 {
41 super( session, LdapDN.EMPTY_LDAPDN );
42 }
43
44
45 /**
46 * Set the context DN
47 *
48 * @param dn The DN to set
49 */
50 public void setDn( LdapDN dn )
51 {
52 if ( dn.equals( LdapDN.EMPTY_LDAPDN ) )
53 {
54 return;
55 }
56
57 throw new UnsupportedOperationException(
58 "Cannot set the empty operation context to anything other than the EmptyDN" );
59 }
60
61
62 /**
63 * @see Object#toString()
64 */
65 public String toString()
66 {
67 return "EmptyOperationContext";
68 }
69 }