4
* Copyright (C) 2009 Tim Marston <edam@waxworlds.org>
4
* Copyright (C) 2009 Tim Marston <tim@ed.am>
6
6
* This file is part of sqlite3cc (hereafter referred to as "this program").
7
* See http://www.waxworlds.org/edam/software/sqlite3cc for more information.
9
* This program is free software: you can redistribute it and/or modify
10
* it under the terms of the GNU Lesser General Public License as published
11
* by the Free Software Foundation, either version 3 of the License, or
12
* (at your option) any later version.
14
* This program is distributed in the hope that it will be useful,
15
* but WITHOUT ANY WARRANTY; without even the implied warranty of
16
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17
* GNU Lesser General Public License for more details.
7
* See http://ed.am/dev/sqlite3cc for more information.
9
* This program is free software: you can redistribute it and/or modify it under
10
* the terms of the GNU Lesser General Public License as published by the Free
11
* Software Foundation, either version 3 of the License, or (at your option) any
14
* This program is distributed in the hope that it will be useful, but WITHOUT
15
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
16
* FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
19
19
* You should have received a copy of the GNU Lesser General Public License
20
20
* along with this program. If not, see <http://www.gnu.org/licenses/>.
23
23
#include <sqlite3cc/query.h>
24
24
#include <sqlite3cc/row.h>
25
#include <sqlite3cc/connection.h>
25
26
#include <assert.h>
28
29
sqlite::query::query(
30
connection &connection,
30
31
const std::string &sql )
32
basic_statement( database, sql )
33
basic_statement( connection, sql ),
34
36
assert( sqlite3_column_count( _handle ) > 0 );
38
40
sqlite::query::query(
41
connection &connection )
41
basic_statement( database )
43
basic_statement( connection ),
46
49
int sqlite::query::prepare(
47
50
const std::string &sql )
49
int error_code = basic_statement::prepare( sql );
50
assert( error_code != SQLITE_OK || sqlite3_column_count( _handle ) > 0 );
53
int code = basic_statement::prepare( sql );
54
assert( code != SQLITE_OK || sqlite3_column_count( _handle ) > 0 );
59
int sqlite::query::reset()
62
return basic_statement::reset();
55
66
sqlite::row sqlite::query::step()
57
int error_code = basic_statement::step();
58
if( error_code == SQLITE_ROW )
60
if( error_code == SQLITE_DONE )
61
return row( *this, false );
62
throw sqlite_error( error_code );
68
connection::mutex_guard lock( _connection );
70
int code = basic_statement::step();
71
if( code == SQLITE_DONE ) return row();
72
if( code == SQLITE_ROW ) return row( _handle, _next_row_number++ );
74
throw sqlite_error( _connection, code );
68
80
return sqlite3_column_count( _handle );
84
const std::string sqlite::query::column_name(
88
static_cast< unsigned int >( sqlite3_column_count( _handle ) ) );
89
return sqlite3_column_name( _handle, index );
93
unsigned long long sqlite::query::num_results()
96
unsigned long long count = 0;
97
while( step() ) count++;
103
sqlite::query::iterator::iterator(
104
sqlite::query &query,
109
if( step ) increment();
113
sqlite::row sqlite::query::iterator::dereference() const
119
void sqlite::query::iterator::increment()
121
_row = _query.step();
125
bool sqlite::query::iterator::equal(
126
sqlite::query::iterator const &other )
129
return _row == other._row;
133
sqlite::query::iterator sqlite::query::begin()
136
return sqlite::query::iterator( *this, true );
140
sqlite::query::iterator sqlite::query::end()
142
return sqlite::query::iterator( *this, false );