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1
5 package org.h2.index;
6
7 import java.sql.SQLException  ;
8
9 import org.h2.engine.Session;
10 import org.h2.expression.FunctionCall;
11 import org.h2.message.Message;
12 import org.h2.result.LocalResult;
13 import org.h2.result.Row;
14 import org.h2.result.SearchRow;
15 import org.h2.table.Column;
16 import org.h2.table.FunctionTable;
17 import org.h2.value.Value;
18
19 public class FunctionIndex extends Index {
20
21 private FunctionTable functionTable;
22 private LocalResult result;
23
24 public FunctionIndex(FunctionTable functionTable, Column[] columns, FunctionCall function) {
25 super(functionTable, 0, null, columns, IndexType.createNonUnique(true));
26 this.functionTable = functionTable;
27 }
28
29 public void close(Session session) throws SQLException {
30 }
31
32 public void add(Session session, Row row) throws SQLException {
33 throw Message.getUnsupportedException();
34 }
35
36 public void remove(Session session, Row row) throws SQLException {
37 throw Message.getUnsupportedException();
38 }
39
40 public Cursor find(Session session, SearchRow first, SearchRow last) throws SQLException {
41 if(result == null) {
42 result = functionTable.getResult(session);
43 } else {
44 result.reset();
45 }
46 return new FunctionCursor(result);
47 }
48
49 public int getCost(int[] masks) throws SQLException {
50 if(masks != null) {
51 throw Message.getUnsupportedException();
52 }
53 return Integer.MAX_VALUE;
54 }
55
56 public void remove(Session session) throws SQLException {
57 throw Message.getUnsupportedException();
58 }
59
60 public void truncate(Session session) throws SQLException {
61 throw Message.getUnsupportedException();
62 }
63
64 public boolean needRebuild() {
65 return false;
66 }
67
68 public void checkRename() throws SQLException {
69 throw Message.getUnsupportedException();
70 }
71
72 public boolean canGetFirstOrLast(boolean first) {
73 return false;
74 }
75
76 public Value findFirstOrLast(Session session, boolean first) throws SQLException {
77 throw Message.getUnsupportedException();
78 }
79
80 }
81 |
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