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
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
/*
* Copyright (c) 2008, 2018, Oracle and/or its affiliates. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2.0, as
* published by the Free Software Foundation.
*
* This program is also distributed with certain software (including
* but not limited to OpenSSL) that is licensed under separate terms,
* as designated in a particular file or component or in included license
* documentation. The authors of MySQL hereby grant you an
* additional permission to link the program and your derivative works
* with the separately licensed software that they have included with
* MySQL.
*
* Without limiting anything contained in the foregoing, this file,
* which is part of MySQL Connector/C++, is also subject to the
* Universal FOSS Exception, version 1.0, a copy of which can be found at
* http://oss.oracle.com/licenses/universal-foss-exception.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU General Public License, version 2.0, for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
/* *
* Handling binary data using getString()
*
*/
/* Standard C++ includes */
#include <stdlib.h>
#include <iostream>
#include <sstream>
#include <stdexcept>
#include <boost/scoped_ptr.hpp>
/* Public interface of the MySQL Connector/C++ */
#include <driver/mysql_public_iface.h>
/* Connection parameter and sample data */
#include "examples.h"
using namespace std;
int main(int argc, const char **argv)
{
static const string url(argc >= 2 ? argv[1] : EXAMPLE_HOST);
static const string user(argc >= 3 ? argv[2] : EXAMPLE_USER);
static const string pass(argc >= 4 ? argv[3] : EXAMPLE_PASS);
static const string database(argc >= 5 ? argv[4] : EXAMPLE_DB);
/* Driver Manager */
sql::Driver *driver;
/* sql::ResultSet.rowsCount() returns size_t */
stringstream sql;
int i;
struct _test_data min, max;
cout << boolalpha;
cout << "1..1" << endl;
cout << "# Connector/C++ result set.." << endl;
try {
/* Using the Driver to create a connection */
driver = sql::mysql::get_driver_instance();
boost::scoped_ptr< sql::Connection > con(driver->connect(url, user, pass));
con->setSchema(database);
/* Creating a "simple" statement - "simple" = not a prepared statement */
boost::scoped_ptr< sql::Statement > stmt(con->createStatement());
stmt->execute("DROP TABLE IF EXISTS test");
stmt->execute("CREATE TABLE test(id INT, label CHAR(1), col_binary BINARY(4), col_varbinary VARBINARY(10))");
cout << "#\t Test table created" << endl;
/* Populate the test table with data */
min = max = test_data[0];
for (i = 0; i < EXAMPLE_NUM_TEST_ROWS; i++) {
/* Remember mnin/max values for further testing */
if (test_data[i].id < min.id) {
min = test_data[i];
}
if (test_data[i].id > max.id) {
max = test_data[i];
}
/*
KLUDGE: You should take measures against SQL injections!
*/
sql.str("");
sql << "INSERT INTO test(id, label, col_binary, col_varbinary) VALUES (";
sql << test_data[i].id << ", '" << test_data[i].label << "', ";
sql << "\"a\\0b\", '" << i * 5 << "\\0abc')";
stmt->execute(sql.str());
}
cout << "#\t Test table populated" << endl;
cout << "#\t Testing sql::Statement based resultset" << endl;
{
boost::scoped_ptr< sql::ResultSet > res(stmt->executeQuery("SELECT * FROM test ORDER BY id ASC"));
int row = 0;
while (res->next()) {
cout << "#\t\t Row " << row << ", getRow() " << res->getRow();
cout << " id = " << res->getInt("id");
cout << ", label = '" << res->getString("label") << "'";
/* cout might "hide" \0 and other special characters from the output */
cout << ", col_binary = '" << res->getString("col_binary") << "'";
cout << ", col_varbinary = '" << res->getString("col_varbinary") << "'" << endl;
/* fixed length column - length = size of the column! */
if (res->getString("col_binary").length() != 4) {
throw runtime_error("BINARY(n) should return std::string of length n regardless how long the value stored in the column is.");
}
if (res->getString("col_binary").compare(0, 1, "a")) {
throw runtime_error("First sign from BINARY(n) seems wrong");
}
if (res->getString("col_binary").compare(2, 1, "b")) {
throw runtime_error("Third sign from BINARY(n) seems wrong");
}
if (res->getString("col_varbinary").length() != 5 && res->getString("col_varbinary").length() != 6) {
throw runtime_error("VARBINARY(n) should return std::string of length n which holds the length of the actual column value.");
}
sql::ResultSetMetaData * meta = res->getMetaData();
cout << "#\t\t COLUMN_SIZE = " << meta->getColumnDisplaySize(3) << endl;
row++;
}
}
/* Clean up */
/* stmt->execute("DROP TABLE IF EXISTS test");*/
cout << "# done!" << endl;
} catch (sql::SQLException &e) {
/*
The MySQL Connector/C++ throws three different exceptions:
- sql::MethodNotImplementedException (derived from sql::SQLException)
- sql::InvalidArgumentException (derived from sql::SQLException)
- sql::SQLException (derived from std::runtime_error)
*/
cout << "# ERR: SQLException in " << __FILE__;
cout << "(" << EXAMPLE_FUNCTION << ") on line " << __LINE__ << endl;
// Use what(), getErrorCode() and getSQLState()
cout << "# ERR: " << e.what();
cout << " (MySQL error code: " << e.getErrorCode();
cout << ", SQLState: " << e.getSQLState() << " )" << endl;
cout << "not ok 1 - examples/resultset_binary.cpp" << endl;
return EXIT_FAILURE;
} catch (std::runtime_error &e) {
cout << "# ERR: runtime_error in " << __FILE__;
cout << "(" << EXAMPLE_FUNCTION << ") on line " << __LINE__ << endl;
cout << "# ERR: " << e.what() << endl;
cout << "not ok 1 - examples/resultset_binary.cpp" << endl;
return EXIT_FAILURE;
}
cout << "ok 1 - examples/resultset_binary.cpp" << endl;
return EXIT_SUCCESS;
}
|
