aboutsummaryrefslogtreecommitdiff
path: root/odb/qt/containers/qlist-traits.hxx
blob: 9ac7cbfb984373d0ef1ac81d4daf96b3d805affe (plain)
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
// file      : odb/qt/containers/qlist-traits.hxx
// author    : Constantin Michael <constantin@codesynthesis.com>
// copyright : Copyright (c) 2009-2011 Code Synthesis Tools CC
// license   : GNU GPL v2; see accompanying LICENSE file

#ifndef ODB_QT_CONTAINER_QLIST_TRAITS_HXX
#define ODB_QT_CONTAINER_QLIST_TRAITS_HXX

#include <odb/pre.hxx>

#include <QList>

#include <odb/container-traits.hxx>

namespace odb
{
  template <typename T>
  class access::container_traits<QList<T> >
  {
  public:
    static const container_kind kind = ck_ordered;

    typedef QList<T> container_type;

    typedef T value_type;
    typedef typename 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)
    {
      // Index based access is just as fast as iterator based access for
      // QList.
      //
      for (index_type i (0), n (c.size ()); i < n; ++i)
        f.insert_one (i, c[i]);
    }

    static void
    load (container_type& c, bool more, const functions& f)
    {
      c.clear ();

      while (more)
      {
        index_type dummy;
        c.append (value_type ());
        more = f.load_all (dummy, c.back ());
      }
    }

    static void
    update (const container_type& c, const functions& f)
    {
      f.delete_all ();

      for (index_type i (0), n (c.size ()); i < n; ++i)
        f.insert_one (i, c[i]);
    }

    static void
    erase (const functions& f)
    {
      f.delete_all ();
    }
  };
}

#include <odb/post.hxx>

#endif // ODB_QT_CONTAINER_QLIST_TRAITS_HXX