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
215
216
|
// file : odb/boost/unordered/container-traits.hxx
// copyright : Copyright (c) 2009-2012 Code Synthesis Tools CC
// license : GNU GPL v2; see accompanying LICENSE file
#ifndef ODB_BOOST_UNORDERED_CONTAINER_TRAITS_HXX
#define ODB_BOOST_UNORDERED_CONTAINER_TRAITS_HXX
#include <boost/version.hpp>
// Multi-index container is available since 1.32.0.
//
#if BOOST_VERSION >= 103200
#include <odb/pre.hxx>
#include <utility> // std::move
#include <boost/mpl/find_if.hpp>
#include <boost/mpl/distance.hpp>
#include <boost/mpl/begin_end.hpp>
#include <boost/multi_index_container.hpp>
#include <boost/multi_index/sequenced_index.hpp>
#include <boost/multi_index/random_access_index.hpp>
#include <odb/container-traits.hxx>
#include <odb/details/config.hxx> // ODB_CXX11
namespace odb
{
// Multi-index container can be ordered or set. Whether it is ordered
// depends on whether it has any sequenced or random_access indexes.
// If it is ordered, then we need to use one of these indexes to store
// elements in a specific order. Otherwise, we can use the first index
// since the order of elements in the database is not important. Note
// that there is a terminology clash between ODB and Boost multi-index.
// What ODB calls ordered containers, multi-index calls sequenced and
// random_access. And what ODB calls set containers, multi-index calls
// ordered and hashed.
//
// Test whether index is ordered.
//
template <typename I>
struct multi_index_ordered
{
static const bool value = false;
};
template <typename T>
struct multi_index_ordered< ::boost::multi_index::sequenced<T> >
{
static const bool value = true;
};
template <typename T>
struct multi_index_ordered< ::boost::multi_index::random_access<T> >
{
static const bool value = true;
};
// Get the index of the first ordered sub-index or -1 if none exists.
//
template <typename B, typename I, typename E>
struct multi_index_ordered_index
{
static const int value = ::boost::mpl::distance<B, I>::value;
};
template <typename B, typename E>
struct multi_index_ordered_index<B, E, E>
{
static const int value = -1;
};
template <typename V,
typename ISP,
typename A,
int N =
multi_index_ordered_index<
typename ::boost::mpl::begin<ISP>::type,
typename ::boost::mpl::find_if<
ISP, multi_index_ordered< ::boost::mpl::_1 > >::type,
typename ::boost::mpl::end<ISP>::type>::value>
class multi_index_traits
{
public:
static const container_kind kind = ck_ordered;
static const bool smart = false;
typedef ::boost::multi_index_container<V, ISP, A> container_type;
typedef typename container_type::template nth_index<N>::type
ordered_container_type;
typedef V value_type;
typedef typename ordered_container_type::size_type index_type;
typedef ordered_functions<index_type, value_type> functions;
public:
static void
persist (const container_type& c, const functions& f)
{
const ordered_container_type& oc (c.template get<N> ());
index_type i (0);
for (typename ordered_container_type::const_iterator j (oc.begin ()),
e (oc.end ()); j != e; ++j)
f.insert (i++, *j);
}
static void
load (container_type& c, bool more, const functions& f)
{
ordered_container_type& oc (c.template get<N> ());
oc.clear ();
while (more)
{
index_type dummy;
value_type v;
more = f.select (dummy, v);
#ifdef ODB_CXX11
oc.push_back (std::move (v));
#else
oc.push_back (v);
#endif
}
}
static void
update (const container_type& c, const functions& f)
{
f.delete_ ();
const ordered_container_type& oc (c.template get<N> ());
index_type i (0);
for (typename ordered_container_type::const_iterator j (oc.begin ()),
e (oc.end ()); j != e; ++j)
f.insert (i++, *j);
}
static void
erase (const functions& f)
{
f.delete_ ();
}
};
// Set specialization.
//
template <typename V, typename ISP, typename A>
class multi_index_traits<V, ISP, A, -1>
{
public:
static const container_kind kind = ck_set;
static const bool smart = false;
typedef ::boost::multi_index_container<V, ISP, A> container_type;
typedef V value_type;
typedef set_functions<value_type> functions;
public:
static void
persist (const container_type& c, const functions& f)
{
for (typename container_type::const_iterator i (c.begin ()),
e (c.end ()); i != e; ++i)
f.insert (*i);
}
static void
load (container_type& c, bool more, const functions& f)
{
c.clear ();
while (more)
{
value_type v;
more = f.select (v);
#ifdef ODB_CXX11
c.insert (std::move (v));
#else
c.insert (v);
#endif
}
}
static void
update (const container_type& c, const functions& f)
{
f.delete_ ();
for (typename container_type::const_iterator i (c.begin ()),
e (c.end ()); i != e; ++i)
f.insert (*i);
}
static void
erase (const functions& f)
{
f.delete_ ();
}
};
template <typename V, typename ISP, typename A>
class access::container_traits< ::boost::multi_index_container<V, ISP, A> >
: public multi_index_traits<V, ISP, A>
{
};
}
#include <odb/post.hxx>
#endif // BOOST_VERSION
#endif // ODB_BOOST_UNORDERED_CONTAINER_TRAITS_HXX
|
