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Java > Open Source Codes > com > quadcap > sql > types > ValueTime


1 package com.quadcap.sql.types;
2
3 /* Copyright 1999 - 2003 Quadcap Software. All rights reserved.
4  *
5  * This software is distributed under the Quadcap Free Software License.
6  * This software may be used or modified for any purpose, personal or
7  * commercial. Open Source redistributions are permitted. Commercial
8  * redistribution of larger works derived from, or works which bundle
9  * this software requires a "Commercial Redistribution License"; see
10  * http://www.quadcap.com/purchase.
11  *
12  * Redistributions qualify as "Open Source" under one of the following terms:
13  *
14  * Redistributions are made at no charge beyond the reasonable cost of
15  * materials and delivery.
16  *
17  * Redistributions are accompanied by a copy of the Source Code or by an
18  * irrevocable offer to provide a copy of the Source Code for up to three
19  * years at the cost of materials and delivery. Such redistributions
20  * must allow further use, modification, and redistribution of the Source
21  * Code under substantially the same terms as this license.
22  *
23  * Redistributions of source code must retain the copyright notices as they
24  * appear in each source code file, these license terms, and the
25  * disclaimer/limitation of liability set forth as paragraph 6 below.
26  *
27  * Redistributions in binary form must reproduce this Copyright Notice,
28  * these license terms, and the disclaimer/limitation of liability set
29  * forth as paragraph 6 below, in the documentation and/or other materials
30  * provided with the distribution.
31  *
32  * The Software is provided on an "AS IS" basis. No warranty is
33  * provided that the Software is free of defects, or fit for a
34  * particular purpose.
35  *
36  * Limitation of Liability. Quadcap Software shall not be liable
37  * for any damages suffered by the Licensee or any third party resulting
38  * from use of the Software.
39  */
40
41 import java.io.Externalizable JavaDoc;
42 import java.io.IOException JavaDoc;
43 import java.io.ObjectInput JavaDoc;
44 import java.io.ObjectOutput JavaDoc;
45
46 import java.sql.Time JavaDoc;
47
48 import java.text.SimpleDateFormat JavaDoc;
49
50 /**
51  * A <b>TIME</b> value.
52  *
53  * @author Stan Bailes
54  */
55 public class ValueTime extends ValueDateTime implements Externalizable JavaDoc {
56     static SimpleDateFormat JavaDoc df = new SimpleDateFormat JavaDoc("HH:mm:ss");
57     
58     public ValueTime() {}
59
60     public ValueTime(long val) {
61     super(val);
62     }
63     
64     public ValueTime(String JavaDoc str) throws antlr.RecognitionException {
65     try {
66             synchronized (df) {
67                 val = df.parse(str).getTime();
68             }
69         } catch (Throwable JavaDoc e) {
70         throw new antlr.RecognitionException(e.toString());
71     }
72     }
73         
74     public String JavaDoc toString() {
75         synchronized (df) {
76             return df.format(new Time JavaDoc(val));
77         }
78     }
79
80     public Value unop(int op) throws ValueException {
81     switch (op) {
82     case Op.NULL:
83         return ValueBoolean.falseBoolean;
84     default:
85         throw new ValueException("Unary op: " + Op.toString(op) +
86                      " not implemented for this type");
87     }
88     }
89     
90     public Value binop(int op, Value l) throws ValueException {
91     return l.binop(op, this);
92     }
93
94     public Value binop(int op, ValueString r) throws ValueException {
95         try {
96             return ValueDateTime.binop(op, this, new ValueTime(r.val));
97         } catch (antlr.RecognitionException e) {
98             throw new ValueException("Not a date: " + val);
99         }
100     }
101
102     public Value binop(int op, ValueInterval r) throws ValueException {
103     switch (op) {
104     case Op.PLUS:
105         return new ValueTime(val + r.val);
106     case Op.MINUS:
107         return new ValueTime(val - r.val);
108     default:
109         throw badBinop(op, r);
110     }
111     }
112
113     public Value binop(int op, ValueTime r) throws ValueException {
114     return ValueDateTime.binop(op, this, r);
115     }
116
117     public void readExternal(ObjectInput JavaDoc in)
118     throws IOException JavaDoc, ClassNotFoundException JavaDoc
119     {
120     super.readExternal(in);
121     }
122     
123     public void writeExternal(ObjectOutput JavaDoc out)
124     throws IOException JavaDoc
125     {
126     super.writeExternal(out);
127     }
128
129     public Object JavaDoc asJavaObject() {
130     return new Time JavaDoc(val);
131     }
132
133     public void fromJavaObject(Object JavaDoc obj) throws ValueException {
134     if (obj instanceof Time JavaDoc) {
135         val = ((Time JavaDoc)obj).getTime();
136     } else {
137         throw new ValueException("bad type: " + obj);
138     }
139     }
140
141     public Type getType() {
142     return TypeTime.typeTime;
143     }
144
145     public Value convert(TypeTime type) {
146     return this;
147     }
148
149     public Value convert(TypeTimestamp t) {
150     return new ValueTimestamp(val);
151     }
152 }
153
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