1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
|
#include "odbc-selectcommand.h"
#include "odbc-error.h"
#include "odbc-column.h"
#include <sqlext.h>
#include <stdio.h>
#include <string.h>
#include <boost/multi_index_container.hpp>
#include <boost/multi_index/ordered_index.hpp>
ODBC::SelectCommand::SelectCommand(const Connection & c, const std::string & s) :
DB::Command(s),
ODBC::Command(c, s),
DB::SelectCommand(s)
{
}
ODBC::SelectCommand::~SelectCommand()
{
if (!columns->empty()) {
RETCODE rc = SQLCloseCursor(hStmt);
if (!SQL_SUCCEEDED(rc)) {
throw Error(rc, SQL_HANDLE_STMT, hStmt, "ODBC::SelectCommand::~SelectCommand SQLCloseCursor");
}
}
}
bool
ODBC::SelectCommand::fetch()
{
return fetch(SQL_FETCH_NEXT, 0);
}
bool
ODBC::SelectCommand::fetch(SQLSMALLINT orientation, SQLLEN offset)
{
if (columns->empty()) {
execute();
}
RETCODE rc = SQLFetchScroll(hStmt, orientation, offset);
switch (rc) {
case SQL_SUCCESS_WITH_INFO:
default:
{
SQLCHAR sqlstatus[6];
RETCODE diagrc = SQLGetDiagRec(SQL_HANDLE_STMT, hStmt, 1, sqlstatus, NULL, NULL, 0, NULL);
if (SQL_SUCCEEDED(diagrc)) {
if (!strncmp((const char*)sqlstatus, "01004", 5)) {
for (Columns::iterator i = columns->begin(); i != columns->end(); ++i) {
boost::dynamic_pointer_cast<Column>(*i)->resize();
}
return fetch(SQL_FETCH_RELATIVE, 0);
}
}
if (rc != SQL_SUCCESS_WITH_INFO) {
throw Error(rc, SQL_HANDLE_STMT, hStmt, "ODBC::SelectCommand::fetch SQLFetch");
}
}
case SQL_SUCCESS:
{
bool resized = false;
for (Columns::iterator i = columns->begin(); i != columns->end(); ++i) {
resized |= boost::dynamic_pointer_cast<Column>(*i)->resize();
}
if (resized) {
return fetch(SQL_FETCH_RELATIVE, 0);
}
return true;
}
case SQL_NO_DATA:
return false;
}
}
void
ODBC::SelectCommand::execute()
{
RETCODE rc = SQLExecute(hStmt);
if (!SQL_SUCCEEDED(rc)) {
throw Error(rc, SQL_HANDLE_STMT, hStmt, "ODBC::SelectCommand::execute SQLExecute");
}
SQLSMALLINT colCount;
if (!SQL_SUCCEEDED(rc = SQLNumResultCols(hStmt, &colCount))) {
throw Error(rc, SQL_HANDLE_STMT, hStmt, "ODBC::SelectCommand::execute SQLNumResultCols");
}
if (colCount < 1) {
throw Error("ODBC::SelectCommand::execute No result columns");
}
for (int col = 0; col < colCount; col++) {
SQLCHAR _colName[300];
SQLSMALLINT nameLen, dp, nullable, bindType;
SQLULEN bindSize;
int sqlcol = col + 1;
if (!SQL_SUCCEEDED(rc = SQLDescribeCol(hStmt, sqlcol, _colName, sizeof(_colName), &nameLen, &bindType,
&bindSize, &dp, &nullable))) {
throw Error(rc, SQL_HANDLE_STMT, hStmt, "ODBC::SelectCommand::execute SQLDescribeCol for %d");
}
Glib::ustring colName((const char *)_colName, nameLen);
DB::ColumnPtr ncol;
switch (bindType) {
case SQL_DECIMAL:
case SQL_NUMERIC:
case SQL_REAL:
case SQL_FLOAT:
case SQL_DOUBLE:
ncol = insertColumn(DB::ColumnPtr(new FloatingPointColumn(this, colName, col)));
break;
case SQL_SMALLINT:
case SQL_INTEGER:
case SQL_TINYINT:
case SQL_BIGINT:
ncol = insertColumn(DB::ColumnPtr(new SignedIntegerColumn(this, colName, col)));
break;
case SQL_TYPE_TIME:
case SQL_INTERVAL_YEAR:
case SQL_INTERVAL_MONTH:
case SQL_INTERVAL_DAY:
case SQL_INTERVAL_HOUR:
case SQL_INTERVAL_MINUTE:
case SQL_INTERVAL_SECOND:
case SQL_INTERVAL_YEAR_TO_MONTH:
case SQL_INTERVAL_DAY_TO_HOUR:
case SQL_INTERVAL_DAY_TO_MINUTE:
case SQL_INTERVAL_DAY_TO_SECOND:
case SQL_INTERVAL_HOUR_TO_MINUTE:
case SQL_INTERVAL_HOUR_TO_SECOND:
case SQL_INTERVAL_MINUTE_TO_SECOND:
ncol = insertColumn(DB::ColumnPtr(new IntervalColumn(this, colName, col)));
break;
case SQL_TIMESTAMP:
case SQL_DATETIME:
case SQL_TYPE_DATE:
case SQL_TYPE_TIMESTAMP:
ncol = insertColumn(DB::ColumnPtr(new TimeStampColumn(this, colName, col)));
break;
case SQL_UNKNOWN_TYPE:
throw Error("Unknown column type");
default:
ncol = insertColumn(DB::ColumnPtr(new CharArrayColumn(this, colName, col, bindSize)));
break;
};
boost::dynamic_pointer_cast<Column>(ncol)->bind();
}
}
|
