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1 package com.daffodilwoods.daffodildb.server.serversystem.deeprecordcopy;
2
3 import java.util.*;
4
5 import com.daffodilwoods.database.general.*;
6 import com.daffodilwoods.database.resource.*;
7 public class MappingHandler {
8
9 HashMap mappingOfTables;
10
11
12 public MappingHandler() {
13 mappingOfTables = new HashMap();
14
15 }
16
17 public void addVector(QualifiedIdentifier tableName,Vector recMappings){
18 mappingOfTables.put(tableName,recMappings);
19 }
20
21 public Vector getVector(QualifiedIdentifier tableName){
22 return (Vector)mappingOfTables.get(tableName);
23 }
24
25
26 public Object  getColumnValue(QualifiedIdentifier tableName,int referencedColumn,Object oldRecordValue) throws DException,NullPointerException {
27 Vector mappings = getVector(tableName);
28 for (int i = 0; i < mappings.size(); i++) {
29 RecordMapping recMapping = (RecordMapping)mappings.get(i);
30 Object [] oldrec =((Object [])recMapping.getOldRecord());
31
32 if(com.daffodilwoods.daffodildb.server.sql99.common.Check.getObject( oldrec[referencedColumn] , oldRecordValue ) == 0 ){
33 return recMapping.getNewRecord()[referencedColumn];
34 }
35 }
36 return null;
37
38 }
39
40
41 public boolean isCopied(Object [] newRecord,QualifiedIdentifier tableName) throws DException{
42 Vector mappings = getVector(tableName);
43 for (int i = 0; i < mappings.size(); i++) {
44 RecordMapping recMap = (RecordMapping)mappings.get(i);
45 if(equal(recMap.getNewRecord(),newRecord))
46 return true;
47 }
48 return false;
49 }
50
51
52
53
54 public boolean equal(Object [] oldRec,Object [] newRec) throws DException{
55 if(oldRec == null){
56 return false;
57 }
58 if(oldRec.length != newRec.length){
59 return false;
60 }
61 for (int i = 5; i < oldRec.length; i++) {
62 if(!oldRec[i].equals(newRec[i]))
63 return false;
64 }
65 return true;
66 }
67 }
68 |
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