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1 package com.daffodilwoods.daffodildb.server.datasystem.indexsystem;
2
3 import java.io.*;
4 import java.util.*;
5 import com.daffodilwoods.daffodildb.server.datasystem.utility.*;
6 import com.daffodilwoods.daffodildb.server.sql99.utils._Reference;
7 import com.daffodilwoods.daffodildb.utils.comparator.SuperComparator;
8 import com.daffodilwoods.database.resource.DException;
9 import com.daffodilwoods.daffodildb.utils.BufferRange;
10 import com.daffodilwoods.daffodildb.utils._DComparator;
11
12 public class ByteComparatorSingleColumn extends SuperComparator implements Externalizable{
13
14 boolean orderType;
15 int type;
16 SuperComparator comparator;
17
18 public ByteComparatorSingleColumn(boolean orderType1) {
19 orderType = orderType1;
20 }
21
22 public ByteComparatorSingleColumn() {
23 }
24
25 public ByteComparatorSingleColumn(boolean orderType,SuperComparator comparators0){
26 this.orderType = orderType;
27 comparator = comparators0;
28 }
29
30 public int compareOld(Object  first,Object second)throws DException {
31 int compare = first == null ?
32 second == null ? 0 : -1 :
33 second == null ? 1 :
34 compareObjects(first,second);
35 return orderType ? compare : -compare;
36 }
37
38 public int compare(Object first,Object second)throws DException {
39 int compare = 0;
40 try {
41 compare = ( (_DComparator) first).getNull() ? ( (_DComparator) second).getNull() ? 0 : 1
42 : ( (_DComparator) second).getNull() ? -1 : comparator.compare( (_DComparator) first, (_DComparator) second);
43 } catch (ClassCastException ex) {
44 throw ex;
45 }
46 return orderType ? compare : -compare;
47 }
48
49 private int compareObjects(Object first,Object second)throws DException {
50 return comparator.compare(first,second);
51 }
52
53 public void readExternal(ObjectInput objectInput) throws IOException, ClassNotFoundException {
54 orderType = objectInput.readBoolean();
55 }
56
57 public void writeExternal(ObjectOutput objectOutput) throws IOException {
58 objectOutput.writeBoolean(orderType);
59 }
60
61 public String toString() {
62 return ""+comparator.getClass();
63 }
64 }
65 |
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