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1 package com.daffodilwoods.daffodildb.utils.field;
2
3 import java.math.*;
4
5
6 import com.daffodilwoods.daffodildb.server.sql99.common.*;
7 import com.daffodilwoods.daffodildb.utils.*;
8 import com.daffodilwoods.database.resource.*;
9
10 public class FieldNumber extends FieldBase implements Datatypes,Comparable  {
11
12
13 public FieldNumber(BufferRange bufferRange0,int datatype0) {
14 bufferRange = bufferRange0;
15 datatype = datatype0;
16 }
17
18 public FieldNumber(Object object0,int datatype0) {
19 object = object0;
20 datatype = datatype0;
21 }
22
23 public Object getObject() throws DException{
24 if (bufferRange.getNull())
25 return null;
26 if (object != null)
27 return object;
28 switch (datatype) {
29 case TINYINT:
30 case BYTE:
31 object = getByte();
32 break;
33 case SHORT:
34 case SMALLINT:
35 object = getShort();
36 break;
37 case INT:
38 case INTEGER:
39 object = getInt();
40 break;
41 case BIGINT:
42 case LONG:
43 object = getLong();
44 break;
45 case REAL:
46 object = getFloat();
47 break;
48 case DOUBLE:
49 case DOUBLEPRECISION:
50 case FLOAT:
51 object = getDouble();
52 case BIGDECIMAL:
53 case DEC:
54 case DECIMAL:
55 case NUMERIC:
56 object = getBigDecimal();
57 break;
58 default:
59 throw new DException("DSE514",
60 new Object [] {StaticClass.getDataTypeName(datatype)});
61 }
62 return object;
63 }
64
65
66 private Byte getByte(){
67 return new Byte (bufferRange.getByte(0));
68 }
69
70 private Short getShort(){
71 short a= 0;
72 for(int i = 0 , j = 8 ; i < 2 ; i++ , j -= 8)
73 a += ( (short)bufferRange.getByte(i) & 0xFF) << j;
74 Short aa = new Short (a);
75 return aa;
76 }
77
78 private Integer getInt(){
79 int a = 0;
80 for(int i = 0 , j = 24 ; i < 4; i++,j-=8)
81 a += ( (int)bufferRange.getByte(i) & 0xFF) << j;
82 Integer aa = new Integer (a);
83 return aa;
84 }
85
86 private Long getLong(){
87 long a = 0;
88 for(int i = 0 , j = 56 ; i < 8 ; i++ , j -= 8)
89 a += ((long)bufferRange.getByte(i) & 0xFF) << j;
90 return new Long (a);
91 }
92
93 private Float getFloat(){
94 int a = 0;
95 for(int i = 0 , j = 24; i < 4 ; i++ , j -= 8)
96 a += ( (int)bufferRange.getByte(i) & 0xFF) << j;
97 float f = Float.intBitsToFloat(a);
98 Float ff = new Float (f);
99 return ff;
100 }
101
102 private Double getDouble(){
103 long a= 0;
104 for(int i = 0 , j = 56 ; i < 8; i++ , j -= 8)
105 a += ( (long)bufferRange.getByte(i) & 0xFF) << j;
106 double f=Double.longBitsToDouble(a);
107 Double d = new Double (f);
108 return d;
109 }
110
111 private BigDecimal getBigDecimal(){
112 String ss1 = new String ( bufferRange.getFulBytes(),bufferRange.getOffSet(),bufferRange.getLength() );
113 BigDecimal aa = new BigDecimal(ss1);
114 return aa;
115 }
116
117 public int compareTo(Object fieldBase){
118 throw new java.lang.UnsupportedOperationException ("Method not yet implemented.");
119 }
120
121
122 }
123 |
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