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1
5 package org.h2.index;
6
7 import java.sql.SQLException  ;
8
9 import org.h2.message.Message;
10 import org.h2.result.LocalResult;
11 import org.h2.result.Row;
12 import org.h2.table.Table;
13 import org.h2.value.Value;
14 import org.h2.value.ValueNull;
15
16 public class ViewCursor implements Cursor {
17
18 private Table table;
19 private LocalResult result;
20 private Row current;
21
22 ViewCursor(Table table, LocalResult result) {
23 this.table = table;
24 this.result = result;
25 }
26
27 public Row get() {
28 return current;
29 }
30
31 public int getPos() {
32 throw Message.getInternalError();
33 }
34
35 public boolean next() throws SQLException {
36 boolean res = result.next();
37 if(!res) {
38 result.reset();
39 current = null;
40 return false;
41 }
42 current = table.getTemplateRow();
43 Value[] values = result.currentRow();
44 for(int i=0; i<current.getColumnCount(); i++) {
45 Value v = i<values.length ? values[i] : ValueNull.INSTANCE;
46 current.setValue(i, v);
47 }
48 return true;
49 }
50
51 }
52 |
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