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
|
/*
* connection.h
*
* Copyright (C) 2009 Tim Marston <edam@waxworlds.org>
*
* This file is part of sqlite3cc (hereafter referred to as "this program").
* See http://www.waxworlds.org/edam/software/sqlite3cc for more information.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef SQLITE3CC_CONNECTION_H_
#define SQLITE3CC_CONNECTION_H_
#include <sqlite3.h>
#include <boost/utility.hpp>
#include <string>
namespace sqlite
{
namespace detail {
class basic_statement;
class basic_transaction;
}
class connection
:
private boost::noncopyable
{
//______________________________________________________________________________
// types
public:
/**
* Class to provide a scope lock for the connection mutex
*/
class mutex_guard
{
public:
/**
* Constructor that provides a connection upon which to act
* @param connection reference to a connection
* @see sqlite3_db_mutex()
* @see sqlite3_mutex_enter()
*/
mutex_guard(
connection &connection );
~mutex_guard();
/**
* Release the mutex early
* @see sqlite3_mutex_leave()
*/
void leave();
private:
sqlite3_mutex *_mutex;
};
//______________________________________________________________________________
// instantiation
public:
/**
* Constructor that specifies the filename of a database to open.
* @param filename the filename of the database file to open
* @throws database_error on error
*/
explicit connection(
const std::string &filename );
explicit connection();
virtual ~connection();
//______________________________________________________________________________
// public interface
public:
/**
* Open a database.
* @param filename the filename of the database file to open
* @param flags flags appropriate for sqlite3_open_v2()
* @returns an sqlite error code
* @see sqlite3_open_v2()
*/
int open(
const std::string &filename,
int flags = SQLITE_OPEN_READWRITE | SQLITE_OPEN_CREATE );
/**
* Close an open database.
* @throws database_error on error
* @see sqlite3_close()
*/
void close();
/**
* Execute an SQL statement. An exception is thrown on error.
* @param sql an SQL statement in UTF-8
* @see sqlite3_exc()
*/
void exec(
const std::string &sql );
/**
* Sets a default busy handler which will
* wait for the specified number of milliseconds.
* @param duration number of milliseconds to wait
* @returns an sqlite error code
* @see sqlite3_busy_timeout()
*/
int busy_timeout(
int duration );
//______________________________________________________________________________
// implementation
private:
friend class detail::basic_statement;
friend class detail::basic_transaction;
friend class command;
friend class sqlite_error;
/** the connection handle */
sqlite3 *_handle;
};
} // namespace sqlite
#endif /* SQLITE3CC_CONNECTION_H_ */
|