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
|
/*
* Copyright (c) 2007, 2014, Oracle and/or its affiliates. All rights reserved.
*
* 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; version 2 of the
* License.
*
* 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 St, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#ifndef _RECORDSET_DATA_STORAGE_BE_H_
#define _RECORDSET_DATA_STORAGE_BE_H_
#include "wbpublic_public_interface.h"
#include "sqlide/recordset_be.h"
namespace sqlite
{
struct command;
}
class WBPUBLICBACKEND_PUBLIC_FUNC Recordset_data_storage
{
public:
typedef boost::shared_ptr<Recordset_data_storage> Ref;
typedef boost::weak_ptr<Recordset_data_storage> Ptr;
virtual ~Recordset_data_storage();
protected:
Recordset_data_storage(bec::GRTManager *grtm);
friend class Recordset;
protected:
bec::GRTManager *_grtm;
public:
typedef std::list<sqlite::variant_t> Var_list;
typedef std::vector<sqlite::variant_t> Var_vector;
protected:
boost::shared_ptr<sqlite::connection> data_swap_db(const Recordset::Ref &recordset);
public:
void apply_changes(Recordset::Ptr recordset, bool skip_commit);
void serialize(Recordset::Ptr recordset);
void unserialize(Recordset::Ptr recordset);
void fetch_blob_value(Recordset::Ptr recordset, RowId rowid, ColumnId column, sqlite::variant_t &blob_value);
protected:
virtual void fetch_blob_value(Recordset *recordset, sqlite::connection *data_swap_db, RowId rowid, ColumnId column, sqlite::variant_t &blob_value);
protected:
virtual void do_apply_changes(const Recordset *recordset, sqlite::connection *data_swap_db, bool skip_commit) = 0;
virtual void do_serialize(const Recordset *recordset, sqlite::connection *data_swap_db) = 0;
virtual void do_unserialize(Recordset *recordset, sqlite::connection *data_swap_db) = 0;
virtual void do_fetch_blob_value(Recordset *recordset, sqlite::connection *data_swap_db, RowId rowid, ColumnId column, sqlite::variant_t &blob_value) = 0;
public:
bool valid() { return _valid; }
bool readonly() { return _readonly; }
std::string readonly_reason() { return _readonly_reason; }
void readonly_reason(const std::string& reason) { _readonly_reason = reason; }
virtual ColumnId aux_column_count() = 0;
protected:
bool _readonly;
std::string _readonly_reason;
bool _valid;
public:
virtual bool reloadable() const { return true; }
public:
static void create_data_swap_tables(sqlite::connection *data_swap_db, Recordset::Column_names &column_names, Recordset::Column_types &column_types);
protected:
std::list<boost::shared_ptr<sqlite::command> > prepare_data_swap_record_add_statement(sqlite::connection *data_swap_db, Recordset::Column_names &column_names);
void add_data_swap_record(std::list<boost::shared_ptr<sqlite::command> > &insert_commands, const Var_vector &values);
void update_data_swap_record(sqlite::connection *data_swap_db, RowId rowid, ColumnId column, const sqlite::variant_t &value);
protected:
static Recordset::Column_names & get_column_names(Recordset *recordset) { return recordset->_column_names; }
static Recordset::Column_types & get_column_types(Recordset *recordset) { return recordset->_column_types; }
static Recordset::Column_types & get_real_column_types(Recordset *recordset) { return recordset->_real_column_types; }
static Recordset::Column_flags & get_column_flags(Recordset *recordset) { return recordset->_column_flags; }
static const Recordset::Column_names & get_column_names(const Recordset *recordset) { return recordset->_column_names; }
static const Recordset::Column_types & get_column_types(const Recordset *recordset) { return recordset->_column_types; }
static const Recordset::Column_types & get_real_column_types(const Recordset *recordset) { return recordset->_real_column_types; }
static const Recordset::Column_flags & get_column_flags(const Recordset *recordset) { return recordset->_column_flags; }
public:
bool limit_rows() { return _limit_rows; }
void limit_rows(bool value) { _limit_rows= value; }
int limit_rows_count() { return _limit_rows_count; }
void limit_rows_count(RowId value) { _limit_rows_count = (int)value; }
bool limit_rows_applicable() { return _limit_rows_applicable; }
void limit_rows_applicable(bool val) { _limit_rows_applicable= val; }
int limit_rows_offset() { return _limit_rows_offset; }
void scroll_rows_frame_forward() { _limit_rows_offset += _limit_rows_count; }
void scroll_rows_frame_backward() { _limit_rows_offset= std::max<int>(0, (_limit_rows_offset - _limit_rows_count)); }
protected:
bool _limit_rows;
int _limit_rows_count;
int _limit_rows_offset;
bool _limit_rows_applicable;
};
#endif /* _RECORDSET_DATA_STORAGE_BE_H_ */
|
