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
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
|
// file : odb/pgsql/statement.cxx
// author : Constantin Michael <constantin@codesynthesis.com>
// copyright : Copyright (c) 2005-2011 Code Synthesis Tools CC
// license : GNU GPL v2; see accompanying LICENSE file
#include <cstdlib> // std::atol
#include <cassert>
#include <odb/exceptions.hxx> // object_not_persistent
#include <odb/pgsql/statement.hxx>
#include <odb/pgsql/connection.hxx>
#include <odb/pgsql/transaction.hxx>
#include <odb/pgsql/result-ptr.hxx>
#include <odb/pgsql/error.hxx>
using namespace std;
namespace odb
{
namespace pgsql
{
//
// statement
//
statement::
~statement ()
{
try
{
string s ("deallocate ");
s += name_;
PQexec (conn_.handle (), s.c_str ());
}
catch (...)
{
}
}
statement::
statement (connection& conn,
const string& name,
const string& stmt,
const Oid* types,
size_t types_count)
: conn_ (conn),
name_ (name)
{
result_ptr r (PQprepare (conn_.handle (),
name_.c_str (),
stmt.c_str (),
static_cast<int> (types_count),
types));
if (!is_good_result (r.get ()))
translate_error (conn_, r.get ());
}
//
// insert_statement
//
insert_statement::
~insert_statement ()
{
}
insert_statement::
insert_statement (connection& conn,
const string& name,
const string& stmt,
const Oid* types,
size_t types_count,
native_binding& data)
: statement (conn, name, stmt, types, types_count),
data_ (data)
{
}
bool insert_statement::
execute ()
{
result_ptr r (PQexecPrepared (conn_.handle (),
name_.c_str (),
data_.count,
data_.values,
data_.lengths,
data_.formats,
1));
PGresult* h (r.get ());
ExecStatusType stat;
if (!is_good_result (h, &stat))
{
if (PGRES_FATAL_ERROR == stat)
{
string s (PQresultErrorField (h, PG_DIAG_SQLSTATE));
if (s == "23505")
return false;
}
translate_error (conn_, h);
}
oid_ = PQoidValue (h);
return true;
}
unsigned long long insert_statement::
id ()
{
// @@ Need to check what InvalidOid evaluates to.
// Is this function signature required?
//
return static_cast<unsigned long long> (oid_);
}
//
// update_statement
//
update_statement::
~update_statement ()
{
}
update_statement::
update_statement (connection& conn,
const string& name,
const string& stmt,
const Oid* types,
size_t types_count,
native_binding& cond,
native_binding& data)
: statement (conn, name, stmt, types, types_count),
cond_ (cond),
data_ (data)
{
}
void update_statement::
execute ()
{
result_ptr r (PQexecPrepared (conn_.handle (),
name_.c_str (),
cond_.count,
cond_.values,
cond_.lengths,
cond_.formats,
1));
PGresult* h (r.get ());
if (!is_good_result (h))
translate_error (conn_, h);
// PQcmdTuples returns a string representing the number of matching
// rows found. "0" indicates no match.
//
if (PQcmdTuples (h)[0] == '0')
throw object_not_persistent ();
}
//
// delete_statement
//
delete_statement::
~delete_statement ()
{
}
delete_statement::
delete_statement (connection& conn,
const string& name,
const string& stmt,
const Oid* types,
size_t types_count,
native_binding& cond)
: statement (conn, name, stmt, types, types_count),
cond_ (cond)
{
}
unsigned long long delete_statement::
execute ()
{
result_ptr r (PQexecPrepared (conn_.handle (),
name_.c_str (),
cond_.count,
cond_.values,
cond_.lengths,
cond_.formats,
1));
PGresult* h (r.get ());
if (!is_good_result (h))
translate_error (conn_, h);
const char* s (PQcmdTuples (h));
unsigned long long count;
if (s[0] != '\0' && s[1] == '\0')
count = static_cast<unsigned long long> (s[0] - '0');
else
count = static_cast<unsigned long long> (atol (s));
return count;
}
}
}
|
