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
|
// file : odb/pgsql/result.txx
// author : Constantin Michael <constantin@codesynthesis.com>
// copyright : Copyright (c) 2009-2011 Code Synthesis Tools CC
// license : GNU GPL v2; see accompanying LICENSE file
#include <odb/exceptions.hxx>
namespace odb
{
namespace pgsql
{
template <typename T>
result_impl<T>::
~result_impl ()
{
}
template <typename T>
result_impl<T>::
result_impl (const query&,
details::shared_ptr<select_statement> st,
object_statements<object_type>& sts)
: odb::result_impl<T> (sts.connection ().database ()),
statement_ (st),
statements_ (sts)
{
}
template <typename T>
void result_impl<T>::
load (object_type& obj)
{
load_image ();
// This is a top-level call so the statements cannot be locked.
//
assert (!statements_.locked ());
typename object_statements<object_type>::auto_lock l (statements_);
typename object_traits::image_type& i (statements_.image ());
object_traits::init (obj, i, this->database ());
// Initialize the id image and binding and load the rest of the object
// (containers, etc).
//
typename object_traits::id_image_type& idi (statements_.id_image ());
object_traits::init (idi, object_traits::id (i));
binding& idb (statements_.id_image_binding ());
if (idi.version != statements_.id_image_version () || idb.version == 0)
{
object_traits::bind (idb.bind, idi);
statements_.id_image_version (idi.version);
idb.version++;
}
object_traits::load_ (statements_, obj);
statements_.load_delayed ();
l.unlock ();
}
template <typename T>
typename result_impl<T>::id_type result_impl<T>::
load_id ()
{
load_image ();
return object_traits::id (statements_.image ());
}
template <typename T>
void result_impl<T>::
next ()
{
this->current (pointer_type ());
if (!statement_->next ())
this->end_ = true;
}
template <typename T>
void result_impl<T>::
load_image ()
{
// The image can grow between calls to load() as a result of other
// statements execution.
//
typename object_traits::image_type& im (statements_.image ());
if (im.version != statements_.out_image_version ())
{
binding& b (statements_.out_image_binding ());
object_traits::bind (b.bind, im, true);
statements_.out_image_version (im.version);
b.version++;
}
select_statement::result r (statement_->load ());
if (r == select_statement::truncated)
{
if (object_traits::grow (im, statements_.out_image_truncated ()))
im.version++;
if (im.version != statements_.out_image_version ())
{
binding& b (statements_.out_image_binding ());
object_traits::bind (b.bind, im, true);
statements_.out_image_version (im.version);
b.version++;
statement_->reload ();
}
}
}
template <typename T>
void result_impl<T>::
cache ()
{
}
template <typename T>
std::size_t result_impl<T>::
size ()
{
return statement_->result_size ();
}
}
}
|