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1 package com.daffodilwoods.daffodildb.server.sql99.expression.booleanvalueexpression.predicates;
2
3 import java.util.*;
4
5 import com.daffodilwoods.daffodildb.utils.*;
6 import com.daffodilwoods.daffodildb.utils.comparator.*;
7 import com.daffodilwoods.database.resource.*;
8
9
17
18 public class ByteInComparator extends SuperComparator {
19
20 private SuperComparator superComparator;
21 private Object  localCacheSingle;
22 private SuperComparator[] comparators;
23 private Object [] localCache;
24
25 public ByteInComparator(SuperComparator[] superComparator0, Object localCache0) throws DException {
26 comparators = superComparator0;
27 localCache = (Object []) localCache0;
28 Arrays.sort(localCache, new Comparator(GetByteComparator.objectComparator));
29 }
30
31 public int compare(Object leftFieldBases, Object o2) throws DException {
32 return binarySearch(leftFieldBases, localCache);
33 }
34
35 private int binarySearch(Object left, Object [] rightArray) throws DException {
36 int low = 0, high = rightArray.length - 1;
37 while (low <= high) {
38 int mid = (low + high) / 2;
39 SuperComparator comparator = comparators[mid];
40 int returnValue = comparator.compare(left, rightArray[mid]);
41 if (returnValue < 0) {
42 high = mid - 1;
43 } else if (returnValue > 0) {
44 low = mid + 1;
45 } else {
46 return 0;
47 }
48 }
49 return -1;
50 }
51
52 public String toString() {
53 return "ByteInComparator[" + superComparator + "]";
54 }
55
56 }
57
58 class Comparator implements java.util.Comparator {
59 private SuperComparator comparator;
60
61 Comparator(SuperComparator comparator0) {
62 comparator = comparator0;
63 }
64
65 public int compare(Object leftFieldBases, Object o2) {
66 try {
67 return comparator.compare(leftFieldBases, o2);
68 } catch (DException ex) {
69 }
70 return -1;
71 }
72
73 }
74 |
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