blob: f07b323ea701f272d09609d1d5e803620273bfae (
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
|
/*
* Copyright (C) 2009-2012 Geometer Plus <[email protected]>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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 General Public License 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 Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#ifndef __DBDATAREADER_H__
#define __DBDATAREADER_H__
#include "DBValues.h"
class DBDataReader {
public:
DBDataReader();
virtual ~DBDataReader();
public: // to implement:
virtual bool next() = 0;
virtual bool reset() = 0;
virtual void close() = 0;
virtual std::size_t columnsNumber() const = 0;
virtual DBValue::ValueType type(std::size_t column) const = 0;
virtual shared_ptr<DBValue> value(std::size_t column) const = 0;
virtual int intValue(std::size_t column) const = 0;
virtual double realValue(std::size_t column) const = 0;
virtual std::string textValue(std::size_t column, const std::string &defaultValue) const = 0;
public:
bool isDBNull(std::size_t column) const;
bool isInt(std::size_t column) const;
bool isReal(std::size_t column) const;
bool isText(std::size_t column) const;
};
inline bool DBDataReader::isDBNull(std::size_t column) const { return type(column) == DBValue::DBNULL; }
inline bool DBDataReader::isInt(std::size_t column) const { return type(column) == DBValue::DBINT; }
inline bool DBDataReader::isReal(std::size_t column) const { return type(column) == DBValue::DBREAL; }
inline bool DBDataReader::isText(std::size_t column) const { return type(column) == DBValue::DBTEXT; }
#endif /* __DBDATAREADER_H__ */
|
