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Java > Open Source Codes > com > db4o > YFloat


1 /* Copyright (C) 2004 - 2006 db4objects Inc. http://www.db4o.com
2
3 This file is part of the db4o open source object database.
4
5 db4o is free software; you can redistribute it and/or modify it under
6 the terms of version 2 of the GNU General Public License as published
7 by the Free Software Foundation and as clarified by db4objects' GPL
8 interpretation policy, available at
9 http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
10 Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
11 Suite 350, San Mateo, CA 94403, USA.
12
13 db4o is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16 for more details.
17
18 You should have received a copy of the GNU General Public License along
19 with this program; if not, write to the Free Software Foundation, Inc.,
20 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */

21 package com.db4o;
22
23 import com.db4o.foundation.*;
24 import com.db4o.reflect.ReflectClass;
25
26
27 final class YFloat extends YInt {
28     
29     private static final Float JavaDoc i_primitive = new Float JavaDoc(0);
30     
31     public YFloat(YapStream stream) {
32         super(stream);
33     }
34     
35     public Object JavaDoc coerce(ReflectClass claxx, Object JavaDoc obj) {
36         return Coercion4.toFloat(obj);
37     }
38
39     public Object JavaDoc defaultValue(){
40         return i_primitive;
41     }
42     
43     public int getID() {
44         return 3;
45     }
46
47     protected Class JavaDoc primitiveJavaClass() {
48         return float.class;
49     }
50
51     Object JavaDoc primitiveNull() {
52         return i_primitive;
53     }
54
55     Object JavaDoc read1(YapReader a_bytes) {
56         return new Float JavaDoc(Float.intBitsToFloat(a_bytes.readInt()));
57     }
58
59     public void write(Object JavaDoc a_object, YapReader a_bytes) {
60         writeInt(
61             Float.floatToIntBits(((Float JavaDoc) a_object).floatValue()),
62             a_bytes);
63     }
64
65     // Comparison_______________________
66

67     private float i_compareTo;
68
69     private float valu(Object JavaDoc obj) {
70         return ((Float JavaDoc) obj).floatValue();
71     }
72
73     void prepareComparison1(Object JavaDoc obj) {
74         i_compareTo = valu(obj);
75     }
76     
77     public Object JavaDoc current1(){
78         return new Float JavaDoc(i_compareTo);
79     }
80
81     boolean isEqual1(Object JavaDoc obj) {
82         return obj instanceof Float JavaDoc && valu(obj) == i_compareTo;
83     }
84
85     boolean isGreater1(Object JavaDoc obj) {
86         return obj instanceof Float JavaDoc && valu(obj) > i_compareTo;
87     }
88
89     boolean isSmaller1(Object JavaDoc obj) {
90         return obj instanceof Float JavaDoc && valu(obj) < i_compareTo;
91     }
92
93 }
94
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