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1 package com.daffodilwoods.daffodildb.client;
2
3 import com.daffodilwoods.daffodildb.server.sql99.dql.resultsetmetadata.*;
4
5 import com.daffodilwoods.daffodildb.server.sql99.dql.resultsetmetadata._RowReader;
6
7 import com.daffodilwoods.daffodildb.server.sql99.dql.resultsetmetadata.SelectKeyColumnInformation;
8
9 import com.daffodilwoods.daffodildb.server.sql99.dql.resultsetmetadata.AllColumnRowReader;
10
11 import com.daffodilwoods.database.sqlinitiator.*;
12 import com.daffodilwoods.database.resource.*;
13 import com.daffodilwoods.database.general.*;
14
15 import com.daffodilwoods.daffodildb.server.sql99.utils.*;
16
17 import java.util.Comparator  ;
18 import com.daffodilwoods.database.utility.*;
19 import com.daffodilwoods.daffodildb.server.sql99.dql.queryexpression.*;
20 import com.daffodilwoods.daffodildb.utils.comparator.SuperComparator;
21 public class RSBKeyComparator implements Comparator {
22
23 SuperComparator comparator;
24 _RowReader rowReader;
25
26 public RSBKeyComparator(SuperComparator comparator0,_RowReader rowReader0) {
27 comparator = comparator0;
28 rowReader = rowReader0;
29 }
30
31 public int compare(Object first, Object second) {
32 if(first == null || second == null){
33 return 0;
34 }
35 Object key1 = ((RecordSetBuffer.RBTreeLocationId)first).rowKey;
36 Object key2 = ((RecordSetBuffer.RBTreeLocationId)second).rowKey;
37 try {
38 return comparator.compare(key1,key2);
39 }
40 catch (ClassCastException ex) {
41 throw ex;
42 }
43 catch(DException de){
44 }
45 throw new UnsupportedOperationException ("Method not supported");
46 }
47
48 public Object getOrderValues(Object values) throws DException {
49 return ((_AllColumnRowReader)rowReader).getKey(values);
50
51 }
52
53 SuperComparator getComparator() throws DException{
54 return comparator;
55 }
56
57 public int compare1(Object object1,Object object2){
58 try {
59 if(object1 == null || object2 == null)
60 return 0;
61 Object [] first = (Object [])object1;
62 Object [] second = (Object [])object2;
63 int length = first.length;
64 int state = 0;
65 boolean flag = false;
66 for (int i = 0; i < length; i++) {
67 if(first[i] != null && second[i] == null) {
68 if(state == 0)
69 state = 1;
70 continue;
71 }
72 if(first[i] == null && second[i] != null){
73 if(state == 0)
74 state = -1;
75 continue;
76 }
77 if(first[i] == null && second[i] == null)
78 continue;
79
80 int cmp = compareResult(second[i],first[i]);
81
82 if(cmp != 0)
83 return state == -1 || state == 1 ? state : cmp;
84 else
85 flag = true;
86 }
87 return flag ? 0 : state;
88 }
89 catch (ClassCastException ex) {
90 throw ex;
91 }
92 }
93
94 private int compareResult(Object first, Object second) {
95 try{
96 IgnoreValue i2 = (IgnoreValue)second;
97 return 0;
98 }catch(ClassCastException cce1){ }
99 if (first instanceof String )
100 return String.CASE_INSENSITIVE_ORDER.compare(first,second);
101 if (first instanceof Boolean ){
102 boolean f1 = ((Boolean )first).booleanValue();
103 boolean f2 = ((Boolean )second).booleanValue();
104 return f1 ^ f2 ? f1 ? 1 : -1 : 0;
105 }
106 return ((Comparable )first).compareTo(second);
107 }
108
109 }
110 |
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