KickJava   Java API By Example, From Geeks To Geeks.

Java > Open Source Codes > smallsql > database > ExpressionFunctionIIF


1 /* =============================================================
2  * SmallSQL : a free Java DBMS library for the Java(tm) platform
3  * =============================================================
4  *
5  * (C) Copyright 2004-2006, by Volker Berlin.
6  *
7  * Project Info: http://www.smallsql.de/
8  *
9  * This library is free software; you can redistribute it and/or modify it
10  * under the terms of the GNU Lesser General Public License as published by
11  * the Free Software Foundation; either version 2.1 of the License, or
12  * (at your option) any later version.
13  *
14  * This library is distributed in the hope that it will be useful, but
15  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
16  * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
17  * License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with this library; if not, write to the Free Software
21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
22  * USA.
23  *
24  * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
25  * in the United States and other countries.]
26  *
27  * ---------------
28  * ExpressionFunctionIIF.java
29  * ---------------
30  * Author: Volker Berlin
31  *
32  * Created on 11.04.2004
33  */

34 package smallsql.database;
35
36
37 /**
38  * @author Volker Berlin
39  */

40 final class ExpressionFunctionIIF extends ExpressionFunction {
41
42     
43     int getFunction() {
44         return SQLTokenizer.IIF;
45     }
46
47
48     boolean isNull() throws Exception JavaDoc {
49         if(param1.getBoolean())
50             return param2.isNull();
51         return param3.isNull();
52     }
53
54
55     boolean getBoolean() throws Exception JavaDoc {
56         if(param1.getBoolean())
57             return param2.getBoolean();
58         return param3.getBoolean();
59     }
60
61
62     int getInt() throws Exception JavaDoc {
63         if(param1.getBoolean())
64             return param2.getInt();
65         return param3.getInt();
66     }
67
68
69     long getLong() throws Exception JavaDoc {
70         if(param1.getBoolean())
71             return param2.getLong();
72         return param3.getLong();
73     }
74
75
76     float getFloat() throws Exception JavaDoc {
77         if(param1.getBoolean())
78             return param2.getFloat();
79         return param3.getFloat();
80     }
81
82
83     double getDouble() throws Exception JavaDoc {
84         if(param1.getBoolean())
85             return param2.getDouble();
86         return param3.getDouble();
87     }
88
89
90     long getMoney() throws Exception JavaDoc {
91         if(param1.getBoolean())
92             return param2.getMoney();
93         return param3.getMoney();
94     }
95
96
97     MutableNumeric getNumeric() throws Exception JavaDoc {
98         if(param1.getBoolean())
99             return param2.getNumeric();
100         return param3.getNumeric();
101     }
102
103
104     Object JavaDoc getObject() throws Exception JavaDoc {
105         if(param1.getBoolean())
106             return param2.getObject();
107         return param3.getObject();
108     }
109     
110
111     String JavaDoc getString() throws Exception JavaDoc {
112         if(param1.getBoolean())
113             return param2.getString();
114         return param3.getString();
115     }
116     
117
118     final int getDataType() {
119         return ExpressionArithmetic.getDataType(param2, param3);
120     }
121
122     
123     final int getPrecision(){
124         return Math.max( param2.getPrecision(), param3.getPrecision() );
125     }
126     
127     
128     final int getScale(){
129         return Math.max( param2.getScale(), param3.getScale() );
130     }
131
132 }
133
Popular Tags