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1
2 package in.co.daffodil.db.jdbc;
3
4
5 import java.util.*;
6 import com.daffodilwoods.database.resource.*;
7
11
12 public class RecordBuffer {
13
14 HashMap updateValuesMap;
15 ArrayList updatedRowsList;
16 ArrayList insertedRowList;
17 public RecordBuffer() {
18 updateValuesMap = new HashMap();
19 updatedRowsList = new ArrayList();
20 insertedRowList = new ArrayList();
21 }
22
23 public Object  getObject(Object key){
24 return updateValuesMap.containsKey(key) ? updateValuesMap.get(key) : null;
25 }
26
27 public boolean rowUpdated(Object key){
28 return updatedRowsList.contains(key);
29 }
30
31 public boolean rowInserted(Object key){
32 return insertedRowList.contains(key);
33 }
34
35 public void addRowInserted(Object key){
36 insertedRowList.add(key);
37 }
38
39 public void addRowUpdated(Object key){
40 if(insertedRowList.contains(key))
41 insertedRowList.remove(key);
42 if( ! updatedRowsList.contains(key))
43 updatedRowsList.add(key);
44 }
45
46 public void removeRowDeleted(Object key){
47 if(insertedRowList.contains(key))
48 insertedRowList.remove(key);
49 if( updatedRowsList.contains(key))
50 updatedRowsList.remove(key);
51 }
52
53 public Object [][] getUpdatedIndexesAndValues(){
54 int size = updateValuesMap.size();
55 if(size == 0)
56 return null;
57 Object [][] updateIndexAndValues = new Object [size][2];
58 Set set =updateValuesMap.entrySet();
59 Iterator iterator = set.iterator();
60 int i = 0;
61 while(iterator.hasNext()){
62 Map.Entry m=(Map.Entry)iterator.next();
63 updateIndexAndValues[i][0] = m.getKey();
64 updateIndexAndValues[i++][1] = m.getValue();
65 }
66 return updateIndexAndValues;
67 }
68
69 public int[] getUpdatedColumns(){
70 int size = updateValuesMap.size();
71 if(size == 0)
72 return null;
73 int[] updateColumns = new int[size];
74 Set set =updateValuesMap.entrySet();
75 Iterator iterator = set.iterator();
76 int i = 0;
77 while(iterator.hasNext()){
78 Map.Entry m=(Map.Entry)iterator.next();
79 updateColumns[i++] = m.getKey().hashCode ();
80 }
81 return updateColumns;
82 }
83
84 public Object [] getUpdatedValues(){
85 int size = updateValuesMap.size();
86 if(size == 0)
87 return null;
88 Object [] updateValues = new Object [size];
89 Set set = updateValuesMap.entrySet();
90 Iterator iterator = set.iterator();
91 int i = 0;
92 while(iterator.hasNext()){
93 Map.Entry m=(Map.Entry)iterator.next();
94 updateValues[i++] = m.getValue();
95 }
96 return updateValues;
97 }
98
99 public void setUpdateValue(int columnIndex,Object values){
100 updateValuesMap.put(new Integer (columnIndex),values);
101 }
102
103 public void clearData(){
104 updateValuesMap.clear();
105 }
106 public Object getColumnValue(int columnIndex){
107 return updateValuesMap.get(new Integer (columnIndex));
108 }
109 }
110 |
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