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1 package com.daffodilwoods.daffodildb.utils.field;
2
3 import com.daffodilwoods.daffodildb.utils.BufferRange;
4 import com.daffodilwoods.database.resource.DException;
5 import com.daffodilwoods.daffodildb.server.sql99.common.ColumnDetails;
6 import com.daffodilwoods.daffodildb.server.sql99.common.Datatypes;
7 import java.math.BigDecimal  ;
8 import java.util.*;
9 import com.daffodilwoods.database.utility.P;
10 import com.daffodilwoods.daffodildb.utils.byteconverter.CCzufDpowfsufs;
11 import java.math.BigInteger ;
12
13 public class FieldLiteral extends FieldBase implements Datatypes,Comparable {
14
15 private ColumnDetails columnDetails;
16 private boolean isNull;
17
18 public FieldLiteral(BufferRange bufferRange0,int datatype0) {
19 bufferRange = bufferRange0;
20 datatype = datatype0;
21 }
22
23 public FieldLiteral(Object object0,int datatype0) {
24 object = object0;
25 datatype = datatype0;
26 }
27
28 public Object getObject() throws DException{
29 if(datatype == -1)
30 setDatatype(-1);
31 return object;
32 }
33
34 public int getDatatype() {
35 return datatype;
36 }
37
38 public void setDatatype(int type) throws DException{
39 if(object == null){
40 datatype = type;
41 return;
42 }
43 String number = object.toString();
44 try {
45 switch(type){
46 case BYTE : case TINYINT :
47 object = new Byte (Byte.parseByte(number));
48 bufferRange = new BufferRange(CCzufDpowfsufs.getBytes((Byte )object));
49 datatype = type;
50 break;
51 case SHORT : case SMALLINT :
52 object = new Short (Short.parseShort(number));
53 bufferRange = new BufferRange(CCzufDpowfsufs.getBytes((Short )object));
54 datatype = type;
55 break;
56 case INTEGER :case INT :
57 object = new Integer (Integer.parseInt(number));
58 bufferRange = new BufferRange(CCzufDpowfsufs.getBytes((Integer )object));
59 datatype = type;
60 break;
61 case LONG : case BIGINT :
62 object = new Long (Long.parseLong(number));
63 bufferRange = new BufferRange(CCzufDpowfsufs.getBytes((Long )object));
64 datatype = type;
65 break;
66 case FLOAT : case REAL : case DOUBLE :
67 case DOUBLEPRECISION :
68 object = new Double (Double.parseDouble(number));
69 bufferRange = new BufferRange(CCzufDpowfsufs.getBytes((Double )object));
70 datatype = DOUBLE;
71 break;
72 case BIGDECIMAL : case DECIMAL : case DEC : case NUMERIC :
73 object = new BigDecimal (number);
74 bufferRange = new BufferRange(CCzufDpowfsufs.getBytes((BigDecimal )object));
75 datatype = type;
76 break;
77 case -1 :
78 int counter = 1;
79 while(true){
80 try {
81 switch(counter){
82 case 1 :
83 object = new Byte (Byte.parseByte(number));
84 bufferRange = new BufferRange(CCzufDpowfsufs.getBytes((Byte )object));
85 datatype = BYTE;
86 return;
87 case 2 :
88 object = new Short (Short.parseShort(number));
89 bufferRange = new BufferRange(CCzufDpowfsufs.getBytes((Short )object));
90 datatype = SHORT;
91 return;
92 case 3 :
93 object = new Integer (Integer.parseInt(number));
94 bufferRange = new BufferRange(CCzufDpowfsufs.getBytes((Integer )object));
95 datatype = INTEGER;
96 return;
97 case 4 :
98 object = new Long (Long.parseLong(number));
99 bufferRange = new BufferRange(CCzufDpowfsufs.getBytes((Long )object));
100 datatype = LONG;
101 return;
102 case 5 : new BigInteger (number);
104 object = new BigDecimal (number);
105 bufferRange = new BufferRange(CCzufDpowfsufs.getBytes((BigDecimal )object));
106 datatype = BIGDECIMAL;
107 return;
108 case 6 :
109 try {
110 object = new Double (Double.parseDouble(number));
111 if(Double.MAX_VALUE < ((Double )object).doubleValue())
112 throw new ArithmeticException ();
113 }
114 catch (NumberFormatException ex) {
115 String msg = ex.getMessage();
116 if("Infinity".equalsIgnoreCase(msg)){
117 object = new Double (Double.POSITIVE_INFINITY);
118 }
119 else if("-Infinity".equalsIgnoreCase(msg)){
120 object = new Double (Double.NEGATIVE_INFINITY);
121 }
122 else if("NaN".equalsIgnoreCase(msg)){
123 object = new Double (Double.NaN);
124 }
125 else
126 throw ex;
127 }
128 bufferRange = new BufferRange(CCzufDpowfsufs.getBytes((Double )object));
129 datatype = DOUBLE;
130 return;
131 default :
132 try {
133 object = new BigDecimal (Double.parseDouble(number));
134 }
135 catch (NumberFormatException ex) {
136 String msg = ex.getMessage();
137 if("Infinity".equalsIgnoreCase(msg)){
138 object = new BigDecimal (Double.POSITIVE_INFINITY);
139 bufferRange = new BufferRange(CCzufDpowfsufs.getBytes((Double )object));
140 datatype = DOUBLE;
141 return;
142 }
143 else if("-Infinity".equalsIgnoreCase(msg)){
144 object = new BigDecimal (Double.NEGATIVE_INFINITY);
145 bufferRange = new BufferRange(CCzufDpowfsufs.getBytes((Double )object));
146 datatype = DOUBLE;
147 return;
148 }
149 else if("Infinite or NaN".equalsIgnoreCase(msg)){
150 object = new Double (Double.NaN);
151 bufferRange = new BufferRange(CCzufDpowfsufs.getBytes((Double )object));
152 datatype = DOUBLE;
153 return;
154 }
155 else
156 throw ex;
157 }
158 bufferRange = new BufferRange(CCzufDpowfsufs.getBytes((BigDecimal )object));
159 datatype = BIGDECIMAL;
160 return;
161 }
162 }
163 catch (Exception ex) {
164 if(counter > 6){
165 ; throw ex;
167 }
168 counter++;
169 }
170 }
171 default :
172 setDatatype(-1);
173 break;
174 }
175 }
176 catch (Exception ex) {
177 setDatatype(-1);
178 }
179 }
180
181 public boolean equals(Object fieldBase){
182 try {
183 Object o1 = getObject();
184 Object o2 = ((FieldBase)fieldBase).getObject();
185 if(o1 == null && o2 == null)
186 return true;
187 return o1 != null && o2 != null ? o1.equals(o2) : false;
188 }
189 catch (DException ex) {
190 return false;
191 }
192 }
193
194 public int compareTo(Object fieldBase){
195 try {
196 Object o1 = getObject();
197 Object o2 = ((FieldBase)fieldBase).getObject();
198 if(o1 == null && o2 == null)
199 return 0;
200 else if(o1 == null && o2 !=null)
201 return -1;
202 else if(o1!=null && o2==null)
203 return 1;
204 else
205 return ((Comparable )o1).compareTo(o2);
206 }
207 catch (DException ex) {
208 return -1;
209 }
210
211 }
212
213
214
215 public boolean isNull() {
216 return object == null;
217 }
218
219 public boolean getNull(){
220 return object == null;
221 }
222
223 public String toString(){
224 String str = "FieldLiteral = [Object [" + (object instanceof Object [] ? P.print((Object [])object) : object ) + "]";
225 str += "DataTypes = " + datatype;
226 str += "BufferRange = " + bufferRange + " ]";
227 return str;
228 }
229
236 public BufferRange getBufferRange() {
237 try {
238 if(bufferRange == null)
239 setDatatype(datatype);
240 }
241 catch (DException ex) {
242
243 }
244 return bufferRange;
245 }
246 public byte getByte(int index) {
247 getBufferRange();
248 return bufferRange.getByte(index);
249 }
250
251 public byte[] getBytes(){
252 getBufferRange();
253 return bufferRange.getBytes();
254 }
255
256 }
257 |
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