/usr/include/dlib/sqlite/sqlite_tools.h is in libdlib-dev 18.18-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 | // Copyright (C) 2011 Davis E. King (davis@dlib.net)
// License: Boost Software License See LICENSE.txt for the full license.
#ifndef DLIB_SQLiTE_TOOLS_H_
#define DLIB_SQLiTE_TOOLS_H_
#include "sqlite_tools_abstract.h"
#include "sqlite.h"
// ----------------------------------------------------------------------------------------
namespace dlib
{
class transaction : noncopyable
{
public:
transaction (
database& db_
) :
db(db_),
committed(false)
{
db.exec("begin transaction");
}
void commit ()
{
if (!committed)
{
committed = true;
db.exec("commit");
}
}
~transaction() throw (std::exception)
{
if (!committed)
db.exec("rollback");
}
private:
database& db;
bool committed;
};
// ----------------------------------------------------------------------------------------
template <
typename T
>
void query_object (
database& db,
const std::string& query,
T& item
)
{
statement st(db, query);
st.exec();
if (st.move_next() && st.get_num_columns() == 1)
{
st.get_column_as_object(0,item);
if (st.move_next())
throw sqlite_error("query doesn't result in exactly 1 element");
}
else
{
throw sqlite_error("query doesn't result in exactly 1 element");
}
}
// ----------------------------------------------------------------------------------------
inline std::string query_text (
database& db,
const std::string& query
)
{
statement st(db, query);
st.exec();
if (st.move_next() && st.get_num_columns() == 1)
{
const std::string& temp = st.get_column_as_text(0);
if (st.move_next())
throw sqlite_error("query doesn't result in exactly 1 element");
return temp;
}
else
{
throw sqlite_error("query doesn't result in exactly 1 element");
}
}
// ----------------------------------------------------------------------------------------
inline double query_double (
database& db,
const std::string& query
)
{
statement st(db, query);
st.exec();
if (st.move_next() && st.get_num_columns() == 1)
{
double temp = st.get_column_as_double(0);
if (st.move_next())
throw sqlite_error("query doesn't result in exactly 1 element");
return temp;
}
else
{
throw sqlite_error("query doesn't result in exactly 1 element");
}
}
// ----------------------------------------------------------------------------------------
inline int query_int (
database& db,
const std::string& query
)
{
statement st(db, query);
st.exec();
if (st.move_next() && st.get_num_columns() == 1)
{
int temp = st.get_column_as_int(0);
if (st.move_next())
throw sqlite_error("query doesn't result in exactly 1 element");
return temp;
}
else
{
throw sqlite_error("query doesn't result in exactly 1 element");
}
}
// ----------------------------------------------------------------------------------------
inline int64 query_int64 (
database& db,
const std::string& query
)
{
statement st(db, query);
st.exec();
if (st.move_next() && st.get_num_columns() == 1)
{
int64 temp = st.get_column_as_int64(0);
if (st.move_next())
throw sqlite_error("query doesn't result in exactly 1 element");
return temp;
}
else
{
throw sqlite_error("query doesn't result in exactly 1 element");
}
}
// ----------------------------------------------------------------------------------------
inline const std::vector<char> query_blob (
database& db,
const std::string& query
)
{
statement st(db, query);
st.exec();
if (st.move_next() && st.get_num_columns() == 1)
{
const std::vector<char>& temp = st.get_column_as_blob(0);
if (st.move_next())
throw sqlite_error("query doesn't result in exactly 1 element");
return temp;
}
else
{
throw sqlite_error("query doesn't result in exactly 1 element");
}
}
// ----------------------------------------------------------------------------------------
}
#endif // DLIB_SQLiTE_TOOLS_H_
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