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


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  * MS SQL Platform implementation.
24  *
25  * @author <a HREF="mailto:mpoeschl@marmot.at">Martin Poeschl</a>
26  * @version $Id: PlatformMssqlImpl.java,v 1.6 2004/02/22 06:27:19 jmcnally Exp $
27  */
28 public class PlatformMssqlImpl extends PlatformDefaultImpl
29 {
30     /**
31      * Default constructor.
32      */
33     public PlatformMssqlImpl()
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.INTEGER, "INT"));
45         setSchemaDomainMapping(new Domain(SchemaType.BOOLEANINT, "INT"));
46         setSchemaDomainMapping(new Domain(SchemaType.DOUBLE, "FLOAT"));
47         setSchemaDomainMapping(new Domain(SchemaType.LONGVARCHAR, "TEXT"));
48         setSchemaDomainMapping(new Domain(SchemaType.DATE, "DATETIME"));
49         setSchemaDomainMapping(new Domain(SchemaType.TIME, "DATETIME"));
50         setSchemaDomainMapping(new Domain(SchemaType.TIMESTAMP, "DATETIME"));
51         setSchemaDomainMapping(new Domain(SchemaType.BINARY, "BINARY(7132)"));
52         setSchemaDomainMapping(new Domain(SchemaType.VARBINARY, "IMAGE"));
53         setSchemaDomainMapping(new Domain(SchemaType.LONGVARBINARY, "IMAGE"));
54     }
55     
56     /**
57      * @see Platform#getMaxColumnNameLength()
58      */
59     public int getMaxColumnNameLength()
60     {
61         return 30;
62     }
63     
64     /**
65      * @return Explicitly returns <code>NULL</code> if null values are
66      * allowed (as recomended by Microsoft).
67      * @see Platform#getNullString(boolean)
68      */
69     public String JavaDoc getNullString(boolean notNull)
70     {
71         return (notNull ? "NOT NULL" : "NULL");
72     }
73
74 }
75
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