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1 package com.daffodilwoods.database.general;
2
3 import java.io.ObjectInput  ;
4 import com.daffodilwoods.database.resource.*;
5 import java.io.ObjectOutput ;
6 import java.io.IOException ;
7 import com.daffodilwoods.database.utility.P;
8 import java.util.*;
9 public class PrimaryKey implements java.io.Externalizable {
10
11 private Object [] values;
12 private int[] indexes;
13
14 public PrimaryKey() throws DException {
15 }
16
17 public PrimaryKey(Object [] values) throws DException {
18 this.values = values;
19 indexes = new int[values.length];
20 for (int i = 0; i < values.length; i++)
21 indexes[i] = i;
22 }
23 public Object [] getValues(){
24 return values;
25 }
26 public void setValues(Object [] values) throws DException {
27 this.values = values;
28 indexes = new int[values.length];
29 for (int i = 0; i < values.length; i++)
30 indexes[i] = i;
31 }
32
33 public void setIndexes(int[] indexes){
34 this.indexes = indexes;
35 }
36
37 public int[] getIndexes(){
38 return indexes;
39 }
40
41 public boolean equals(Object object){
42 if(!(object instanceof PrimaryKey) || object == null)
43 return false;
44 PrimaryKey pk = (PrimaryKey)object;
45 Object [] pkValues = pk.getValues();
46 int len1 = indexes.length;
47 int len2 = pk.getIndexes().length;
48 int len = len1 < len2 ? len1 : len2;
49 for(int i =0;i< len; i++){
50 if(pkValues[indexes[i]] == null && values[indexes[i]] == null)
51 continue;
52 if(values[indexes[i]] == null)
53 return false;
54 if(pkValues[indexes[i]] == null)
55 return false;
56 if(! pkValues[indexes[i]].equals(values[indexes[i]]))
57 return false;
58 }
59 return true;
60 }
61
62 public void readExternal(ObjectInput objectInput) {
63 try {
64 values = (Object [])objectInput.readObject();
65 indexes = (int[])objectInput.readObject();
66 }catch(IOException ioe) {
67 }catch(ClassNotFoundException cnf) {
68 }
69 }
70
71 public void writeExternal(ObjectOutput objectOutput) {
72 try {
73 objectOutput.writeObject(values);
74 objectOutput.writeObject(indexes);
75 }catch(IOException ioe) {
76 }
77 }
78
79 public String toString(){
80 return java.util.Arrays.asList(values).toString();
81 }
82
83 public Object [] getObject(){
84 int length = values.length;
85 ArrayList result = new ArrayList(5);
86 for(int i = 0 ; i < length ; i++){
87 if(values[i] instanceof PrimaryKey)
88 result.addAll(Arrays.asList(((PrimaryKey)values[i]).getObject()));
89 else
90 result.add(values[i]);
91 }
92 return result.toArray(new Object [0]);
93 }
94 }
95 |
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