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
21 package org.apache.directory.server.ldap.replication;
22
23
24 import org.apache.directory.api.ldap.model.constants.SchemaConstants;
25 import org.apache.directory.api.ldap.model.entry.Entry;
26 import org.apache.directory.api.ldap.model.exception.LdapException;
27 import org.apache.directory.api.ldap.model.message.controls.ChangeType;
28 import org.apache.directory.server.core.api.entry.ClonedServerEntry;
29
30
31 /**
32 * A place holder storing an Entry and the operation applied on it
33 *
34 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
35 */
36 public class ReplicaEventMessage
37 {
38 /** The message change type */
39 private ChangeType changeType;
40
41 /** The entry */
42 private Entry entry;
43
44 /**
45 * Create a new ReplicaEvent instance for a Add/Delete+Modify operation
46 * @param changeType The change type
47 * @param entry The entry
48 */
49 public ReplicaEventMessage( ChangeType changeType, Entry entry )
50 {
51 this.changeType = changeType;
52
53 if ( entry instanceof ClonedServerEntry )
54 {
55 this.entry = ( ( ClonedServerEntry ) entry ).getClonedEntry();
56 }
57 else
58 {
59 this.entry = entry;
60 }
61 }
62
63
64 /**
65 * @return The changeType
66 */
67 public ChangeType getChangeType()
68 {
69 return changeType;
70 }
71
72
73 /**
74 * @return The stored Entry
75 */
76 public Entry getEntry()
77 {
78 return entry;
79 }
80
81
82 /**
83 * checks if the event's CSN is older than the given CSN
84 *
85 * @param csn the CSN
86 * @return true if the event's CSN is older than the given CSN
87 * @throws LdapException if there are any extreme conditions like a null entry or missing entryCSN attribute.
88 */
89 public boolean isEventOlderThan( String csn ) throws LdapException
90 {
91 if ( csn == null )
92 {
93 return false;
94 }
95
96 String entryCsn = entry.get( SchemaConstants.ENTRY_CSN_AT ).getString();
97
98 int i = entryCsn.compareTo( csn );
99
100 return ( i <= 0 );
101 }
102 }