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.partition.impl.btree.jdbm;
21
22
23 import java.io.IOException;
24 import java.util.UUID;
25
26 import jdbm.RecordManager;
27 import jdbm.helper.Serializer;
28
29 import org.apache.directory.api.ldap.model.entry.Entry;
30 import org.apache.directory.api.ldap.model.schema.SchemaManager;
31 import org.apache.directory.api.ldap.model.schema.comparators.UuidComparator;
32 import org.apache.directory.server.xdbm.MasterTable;
33
34
35 /**
36 * The master table used to store the Attributes of entries.
37 *
38 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
39 */
40 public class JdbmMasterTable extends JdbmTable<String, Entry> implements MasterTable
41 {
42 /**
43 * Creates the master table using JDBM B+Trees for the backing store.
44 *
45 * @param recMan the JDBM record manager
46 * @param schemaManager the schema manager
47 * @throws IOException if there is an error opening the Db file.
48 */
49 public JdbmMasterTable( RecordManager recMan, SchemaManager schemaManager ) throws IOException
50 {
51 super( schemaManager, DBF, recMan, UuidComparator.INSTANCE, UuidSerializer.INSTANCE,
52 new EntrySerializer( schemaManager ) );
53
54 UuidComparator.INSTANCE.setSchemaManager( schemaManager );
55 }
56
57
58 protected JdbmMasterTable( RecordManager recMan, SchemaManager schemaManager, String dbName, Serializer serializer )
59 throws Exception
60 {
61 super( schemaManager, DBF, recMan, UuidComparator.INSTANCE, UuidSerializer.INSTANCE, serializer );
62 }
63
64
65 /**
66 * Get's the next value from this SequenceBDb. This has the side-effect of
67 * changing the current sequence values permanently in memory and on disk.
68 * Master table sequence begins at BigInteger.ONE. The BigInteger.ZERO is
69 * used for the fictitious parent of the suffix root entry.
70 *
71 * @return the current value incremented by one.
72 */
73 public String getNextId( Entry entry )
74 {
75 return UUID.randomUUID().toString();
76 }
77 }