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1 package com.daffodilwoods.daffodildb.utils.field;
2
3 import com.daffodilwoods.database.resource.DException;
4 import com.daffodilwoods.daffodildb.utils.GetByteComparator;
5 import com.daffodilwoods.daffodildb.server.datasystem.interfaces.Datatype;
6 import com.daffodilwoods.daffodildb.utils.BufferRange;
7 import java.sql.Date  ;
8
9 public class FieldDateLiteral extends FieldBase implements Comparable {
10
11 public FieldDateLiteral(Object object0){
12 object = object0;
13 datatype = Datatype.DATE;
14 }
15
16 public Object getObject() throws DException{
17 return object;
18 }
19
20 public FieldDateLiteral(BufferRange bufferRange0) {
21 super(bufferRange0,Datatype.DATE);
22 }
23
24 public BufferRange getBufferRange() {
25 if(bufferRange == null)
26 bufferRange = new BufferRange(getBytes((Date )object));
27 return bufferRange;
28 }
29
30 public boolean isNull() {
31 return object == null;
32 }
33 private byte[] getBytes(java.util.Date date)
34 {
35 if( date == null)
36 return null;
37
38 byte b[] = new byte[8];
39 long a1 = date.getTime();
40 for(int i = 56 , j=0 ; i >= 0 ; i-= 8)
41 b[j++]=(byte)((a1 >> i) & 0xFF);
42 return b;
43 }
44
45 public boolean equals(Object fieldBase){
46 try {
47 return (getDatatype() != ((FieldBase)fieldBase).getDatatype()) ? false :
48 GetByteComparator.sameComparator.compare(this,fieldBase) == 0;
49 }
50 catch (DException ex) {
51 return false;
52 }
53 }
54
55 public int compareTo(Object fieldBase){
56 try {
57 return (GetByteComparator.sameComparator.compare(this,fieldBase) );
58 }
59 catch (DException ex) {
60 return -1;
61 }
62 }
63
64
65 public boolean getNull() {
66 return object == null;
67 }
68 public void setDatatype(int type) throws DException{
69 }
70 public void setBufferRange(BufferRange range) {
71 throw new RuntimeException ("Create new instance of FieldDateLiteral instead of setting the bufferrange. Discuss with Neeraj or Parveen Sir ");
72 }
73
74
75 }
76 |
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