blob: 0164e340ff4805a6d9039dbebd61489517a5ce90 (
plain)
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
|
#pragma once
#include <memory>
#include <functional>
#include <sqlite3.h>
class DB;
class DBStatement;
class DBQueryRow {
public:
DBQueryRow(DBStatement &);
public:
template <typename T>
T col(int index, const T & default_value);
template <typename T>
T col(int index);
private:
DBStatement & parent;
};
class DBQueryRowRange {
public:
DBQueryRowRange(DBStatement & stmt);
private:
class DBQueryRowIterator {
public:
DBQueryRowIterator(DBQueryRowRange & parent);
public:
DBQueryRow & operator * () const;
DBQueryRowIterator & operator ++ ();
bool operator != (const DBQueryRowIterator &) const;
private:
bool end = false;
DBQueryRowRange & parent;
};
public:
DBQueryRowIterator begin();
DBQueryRowIterator end();
private:
DBStatement & parent;
DBQueryRow row;
};
class DBStatement {
friend class DBQueryRow;
friend class DBQueryRowRange;
public:
DBStatement(DB &, const std::string & query);
public:
DBStatement & reset();
DBStatement & bind(const std::string & text);
DBStatement & bind(const int & number);
public:
void execute();
DBQueryRow row();
DBQueryRowRange rows();
private:
std::unique_ptr<sqlite3_stmt, std::function<void(sqlite3_stmt*)>> stmt;
int param_index = 1;
DB & parent;
};
class DB {
friend class DBStatement;
public:
DB(const std::string & path);
DBStatement prepare(const std::string & query);
private:
std::unique_ptr<sqlite3, std::function<void(sqlite3*)>> db = NULL;
};
|