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1
21 package com.db4o;
22
23 import com.db4o.foundation.*;
24 import com.db4o.reflect.ReflectClass;
25
26
27 final class YShort extends YapJavaClass
28 {
29 static final int LENGTH = YapConst.SHORT_BYTES + YapConst.ADDED_LENGTH;
30
31 private static final Short  i_primitive = new Short ((short)0);
32
33 public YShort(YapStream stream) {
34 super(stream);
35 }
36
37 public Object coerce(ReflectClass claxx, Object obj) {
38 return Coercion4.toShort(obj);
39 }
40 public Object defaultValue(){
41 return i_primitive;
42 }
43
44 public int getID(){
45 return 8;
46 }
47
48 public int linkLength(){
49 return LENGTH;
50 }
51
52 protected Class primitiveJavaClass(){
53 return short.class;
54 }
55
56 Object primitiveNull(){
57 return i_primitive;
58 }
59
60 Object read1(YapReader a_bytes){
61 return new Short (readShort(a_bytes));
62 }
63
64 static final short readShort(YapReader a_bytes){
65 int ret = 0;
66 if (Deploy.debug){
67 a_bytes.readBegin(YapConst.YAPSHORT);
68 }
69 for (int i = 0; i < YapConst.SHORT_BYTES; i++){
70 ret = (ret << 8) + (a_bytes._buffer[a_bytes._offset++] & 0xff);
71 }
72 if (Deploy.debug){
73 a_bytes.readEnd();
74 }
75 return (short)ret;
76 }
77
78 public void write(Object a_object, YapReader a_bytes){
79 writeShort(((Short )a_object).shortValue(), a_bytes);
80 }
81
82 static final void writeShort(int a_short, YapReader a_bytes){
83 if(Deploy.debug){
84 a_bytes.writeBegin(YapConst.YAPSHORT);
85 }
86 for (int i = 0; i < YapConst.SHORT_BYTES; i++){
87 a_bytes._buffer[a_bytes._offset++] = (byte) (a_short >> ((YapConst.SHORT_BYTES - 1 - i) * 8));
88 }
89 if(Deploy.debug){
90 a_bytes.writeEnd();
91 }
92 }
93
94
96 private short i_compareTo;
97
98 private short val(Object obj){
99 return ((Short )obj).shortValue();
100 }
101
102 void prepareComparison1(Object obj){
103 i_compareTo = val(obj);
104 }
105
106 public Object current1(){
107 return new Short (i_compareTo);
108 }
109
110 boolean isEqual1(Object obj){
111 return obj instanceof Short && val(obj) == i_compareTo;
112 }
113
114 boolean isGreater1(Object obj){
115 return obj instanceof Short && val(obj) > i_compareTo;
116 }
117
118 boolean isSmaller1(Object obj){
119 return obj instanceof Short && val(obj) < i_compareTo;
120 }
121
122
123 }
124 |
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