KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > org > apache > torque > engine > platform > PlatformDb2Impl


1 package org.apache.torque.engine.platform;
2
3 /*
4  * Copyright 2003,2004 The Apache Software Foundation.
5  *
6  * Licensed under the Apache License, Version 2.0 (the "License");
7  * you may not use this file except in compliance with the License.
8  * 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, software
13  * distributed under the License is distributed on an "AS IS" BASIS,
14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
15  * See the License for the specific language governing permissions and
16  * limitations under the License.
17  */
18
19 import org.apache.torque.engine.database.model.Domain;
20 import org.apache.torque.engine.database.model.SchemaType;
21
22 /**
23  * DB2 Platform implementation.
24  *
25  * @author <a HREF="mailto:mpoeschl@marmot.at">Martin Poeschl</a>
26  * @version $Id: PlatformDb2Impl.java,v 1.5 2004/02/22 06:27:19 jmcnally Exp $
27  */
28 public class PlatformDb2Impl extends PlatformDefaultImpl
29 {
30     /**
31      * Default constructor.
32      */
33     public PlatformDb2Impl()
34     {
35         super();
36         initialize();
37     }
38
39     /**
40      * Initializes db specific domain mapping.
41      */
42     private void initialize()
43     {
44         setSchemaDomainMapping(new Domain(SchemaType.CHAR, "VARCHAR"));
45         setSchemaDomainMapping(new Domain(SchemaType.BOOLEANCHAR, "VARCHAR"));
46         setSchemaDomainMapping(new Domain(SchemaType.LONGVARCHAR, "LONG VARCHAR"));
47         setSchemaDomainMapping(new Domain(SchemaType.BINARY, "CHAR(n) FOR BIT DATA"));
48         setSchemaDomainMapping(new Domain(SchemaType.VARBINARY, "VARCHAR(n) FOR BIT DATA"));
49         setSchemaDomainMapping(new Domain(SchemaType.LONGVARBINARY, "LONG VARCHAR FOR BIT DATA"));
50     }
51
52     /**
53      * @see Platform#getMaxColumnNameLength()
54      */
55     public int getMaxColumnNameLength()
56     {
57         // TODO check this! (value taken from db.props)
58 return 18;
59     }
60
61     /**
62      * @see Platform#getAutoIncrement()
63      */
64     public String JavaDoc getAutoIncrement()
65     {
66         return "GENERATED ALWAYS AS IDENTITY";
67     }
68     
69 }
70
Popular Tags