View Javadoc

1   package org.apache.torque.engine.platform;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *   http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  import org.apache.torque.engine.database.model.Domain;
23  import org.apache.torque.engine.database.model.SchemaType;
24  
25  /***
26   * HSQLDB (formerly known as Hypersonic) Platform implementation.
27   *
28   * @author <a href="mailto:mpoeschl@marmot.at">Martin Poeschl</a>
29   * @version $Id: PlatformHypersonicImpl.java 473814 2006-11-11 22:30:30Z tv $
30   */
31  public class PlatformHypersonicImpl extends PlatformDefaultImpl
32  {
33      /***
34       * Default constructor.
35       */
36      public PlatformHypersonicImpl()
37      {
38          super();
39          initialize();
40      }
41  
42      /***
43       * Initializes db specific domain mapping.
44       */
45      private void initialize()
46      {
47          setSchemaDomainMapping(new Domain(SchemaType.CHAR, "VARCHAR"));
48          setSchemaDomainMapping(new Domain(SchemaType.BOOLEANCHAR, "VARCHAR"));
49          setSchemaDomainMapping(new Domain(SchemaType.LONGVARCHAR, "VARCHAR"));
50          setSchemaDomainMapping(new Domain(SchemaType.VARBINARY, "BINARY"));
51          setSchemaDomainMapping(new Domain(SchemaType.BLOB, "BINARY"));
52          setSchemaDomainMapping(new Domain(SchemaType.CLOB, "LONGVARCHAR"));
53      }
54  
55      /***
56       * @return The RDBMS-specific SQL fragment for autoincrement.
57       * @see Platform#getAutoIncrement()
58       */
59      public String getAutoIncrement()
60      {
61          return "GENERATED BY DEFAULT AS IDENTITY (START WITH 1)";
62      }
63  
64      /***
65       * Returns whether the "not null part" of the definition of a column
66       * should be generated before the "autoincrement part" in a "create table"
67       * statement.
68       * @return false.
69       * @see Platform#createNotNullBeforeAutoincrement()
70       */
71      public boolean createNotNullBeforeAutoincrement()
72      {
73          return false;
74      }
75  }