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
152
153
154
155
156
157
158
159
160
161
162
|
/* Copyright (C) 2003 MySQL AB
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#ifndef ODBC_CODEGEN_Code_query_count_hpp
#define ODBC_CODEGEN_Code_query_count_hpp
#include <common/common.hpp>
#include "Code_query.hpp"
#include "Code_expr_row.hpp"
#include "Code_root.hpp"
class Ctx;
/**
* @class Plan_query_count
* @brief Select count and other aggregates (no group by)
*/
class Plan_query_count : public Plan_query {
public:
Plan_query_count(Plan_root* root);
virtual ~Plan_query_count();
Plan_base* analyze(Ctx& ctx, Ctl& ctl);
Exec_base* codegen(Ctx& ctx, Ctl& ctl);
void print(Ctx& ctx);
// children
void setQuery(Plan_query* query);
void setRow(Plan_expr_row* exprRow);
protected:
Plan_expr_row* getRow();
Plan_query* m_query;
Plan_expr_row* m_exprRow;
};
inline
Plan_query_count::Plan_query_count(Plan_root* root) :
Plan_query(root),
m_query(0),
m_exprRow(0)
{
}
// children
inline void
Plan_query_count::setQuery(Plan_query* query)
{
ctx_assert(query != 0);
m_query = query;
}
inline void
Plan_query_count::setRow(Plan_expr_row* exprRow)
{
ctx_assert(exprRow != 0);
m_exprRow = exprRow;
}
/**
* @class Exec_query_count
* @brief Select count and other aggregates (no group by)
*/
class Exec_query_count : public Exec_query {
public:
class Code : public Exec_query::Code {
public:
Code(const SqlSpecs& sqlSpecs);
virtual ~Code();
protected:
friend class Exec_query_count;
// sets reference to Sqlspecs from the row
};
class Data : public Exec_query::Data {
public:
Data(Exec_query_count* node, const SqlRow& sqlRow);
virtual ~Data();
protected:
friend class Exec_query_count;
// sets reference to SqlRow from the row
bool m_done; // returns one row
};
Exec_query_count(Exec_root* root);
virtual ~Exec_query_count();
void alloc(Ctx& ctx, Ctl& ctl);
void execImpl(Ctx& ctx, Ctl& ctl);
bool fetchImpl(Ctx& ctx, Ctl& ctl);
void close(Ctx& ctx);
void print(Ctx& ctx);
// children
const Code& getCode() const;
Data& getData() const;
void setQuery(Exec_query* query);
void setRow(Exec_expr_row* exprRow);
const Exec_query* getRawQuery() const;
protected:
Exec_query* m_query;
Exec_expr_row* m_exprRow;
};
inline
Exec_query_count::Code::Code(const SqlSpecs& sqlSpecs) :
Exec_query::Code(sqlSpecs)
{
}
inline
Exec_query_count::Data::Data(Exec_query_count* node, const SqlRow& sqlRow) :
Exec_query::Data(node, sqlRow)
{
}
inline
Exec_query_count::Exec_query_count(Exec_root* root) :
Exec_query(root),
m_query(0),
m_exprRow(0)
{
}
// children
inline const Exec_query_count::Code&
Exec_query_count::getCode() const
{
const Code* code = static_cast<const Code*>(m_code);
return *code;
}
inline Exec_query_count::Data&
Exec_query_count::getData() const
{
Data* data = static_cast<Data*>(m_data);
return *data;
}
inline void
Exec_query_count::setQuery(Exec_query* query)
{
ctx_assert(query != 0);
m_query = query;
}
inline void
Exec_query_count::setRow(Exec_expr_row* exprRow)
{
ctx_assert(m_exprRow == 0 && exprRow != 0);
m_exprRow = exprRow;
}
#endif
|
