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1 package com.daffodilwoods.daffodildb.server.datasystem.indexsystem;
2
3 import com.daffodilwoods.daffodildb.server.sql99.utils._Reference;
4 import com.daffodilwoods.daffodildb.server.sql99.utils._VariableValues;
5 import com.daffodilwoods.daffodildb.server.datasystem.persistentsystem.*;
6 import com.daffodilwoods.daffodildb.server.datasystem.interfaces._TableCharacteristics;
7 import com.daffodilwoods.database.resource.DException;
8 import com.daffodilwoods.database.utility.*;
9 import java.util.*;
10 import com.daffodilwoods.daffodildb.utils.BufferRange;
11
12
15
16 public class BTreeCharacteristics implements _BTreeCharacteristics,DatabaseConstants{
17
18 private String  [] columnNames;
19 private int[][] mapping;
20 private _TableCharacteristics tableCharacteristics;
21
22
23 public BTreeCharacteristics(int[][] mapping0,_TableCharacteristics tc) throws DException{
24 columnNames = tc.getColumnNames();
25 mapping = mapping0;
26 tableCharacteristics = tc;
27 }
28
29 public Object getColumnValues(_Reference[] references, Object value ) throws DException {
30 Object [] values = (Object [])value;
31 Object [] vals = new Object [references.length];
32 for(int i = 0,index ; i < references.length ; i++){
33 index = getIndexFromReference(references[i]);
34 vals[i] = tableCharacteristics.getObject(index,(BufferRange)values[mapping[index][1]]) ;
35 }
36 return vals;
37 }
38
39 public Object getColumnValues(_Reference reference, Object value) throws DException {
40 Object [] values = (Object [])value;
41 int index = getIndexFromReference(reference);
42 Object val = null;
43 return val = tableCharacteristics.getObject(index, (BufferRange) values[mapping[index][1]]);
44 }
45
46 private int getIndexFromReference(_Reference reference)throws DException{
47 int index = -1;
48 try{
49 return reference.getIndex();
50 }
51 catch(DException de) {
52 if(!de.getDseCode().equalsIgnoreCase("DSE565"))
53 throw de;
54 String name = reference.getColumn();
55 int k = 0;
56 int length = columnNames.length;
57 for( ; k < length && !name.equalsIgnoreCase(columnNames[k]) ; k++ );
58 if(k != length)
59 reference.setIndex(index = k);
60 else
61 throw COLUMN_NOTFOUND_EXCEPTION;
62 }
63 return index;
64 }
65 }
66 |
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