KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > com > sun > jdo > spi > persistence > support > sqlstore > query > util > type > IntegralType


1 /*
2  * The contents of this file are subject to the terms
3  * of the Common Development and Distribution License
4  * (the License). You may not use this file except in
5  * compliance with the License.
6  *
7  * You can obtain a copy of the license at
8  * https://glassfish.dev.java.net/public/CDDLv1.0.html or
9  * glassfish/bootstrap/legal/CDDLv1.0.txt.
10  * See the License for the specific language governing
11  * permissions and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL
14  * Header Notice in each file and include the License file
15  * at glassfish/bootstrap/legal/CDDLv1.0.txt.
16  * If applicable, add the following below the CDDL Header,
17  * with the fields enclosed by brackets [] replaced by
18  * you own identifying information:
19  * "Portions Copyrighted [year] [name of copyright owner]"
20  *
21  * Copyright 2006 Sun Microsystems, Inc. All rights reserved.
22  */

23
24 /*
25  * NumericType.java
26  *
27  * Created on March 8, 2000
28  */

29
30 package com.sun.jdo.spi.persistence.support.sqlstore.query.util.type;
31
32 /**
33  * This class represents the types
34  * byte, short int, long and char
35  *
36  * @author Michael Bouschen
37  * @version 0.1
38  */

39 public class IntegralType
40     extends NumericType
41 {
42     /**
43      *
44      */

45     public IntegralType(String JavaDoc name, Class JavaDoc clazz, int enumType)
46     {
47         super(name, clazz, enumType);
48     }
49
50     /**
51      * Converts the specified value into a value of this numeric type.
52      * E.g. an Integer is converted into a Long, if this represents
53      * the numeric type long.
54      * @param value value to be converted
55      * @return converted value
56      */

57     public Number JavaDoc getValue(Number JavaDoc value)
58     {
59         Number JavaDoc ret = null;
60
61         if (value == null)
62             ret = null;
63         else if ("int".equals(getName()))
64             ret = new Integer JavaDoc(value.intValue());
65         else if ("long".equals(getName()))
66             ret = new Long JavaDoc(value.longValue());
67         else if ("byte".equals(getName()))
68             ret = new Byte JavaDoc(value.byteValue());
69         else if ("short".equals(getName()))
70             ret = new Short JavaDoc(value.shortValue());
71
72         return ret;
73     }
74     
75     /**
76      * Returns -value.
77      * @param value value to be negated
78      * @return -value
79      */

80     public Number JavaDoc negate(Number JavaDoc value)
81     {
82         Number JavaDoc ret = null;
83
84         if (value == null)
85             ret = null;
86         else if ("int".equals(getName()))
87             ret = new Integer JavaDoc(-value.intValue());
88         else if ("long".equals(getName()))
89             ret = new Long JavaDoc(-value.longValue());
90         else if ("byte".equals(getName()))
91             ret = new Byte JavaDoc((byte)-value.byteValue());
92         else if ("short".equals(getName()))
93             ret = new Short JavaDoc((short)-value.shortValue());
94
95         return ret;
96     }
97 }
98
Popular Tags