diff options
Diffstat (limited to 'odb/qt/containers/list-traits.hxx')
-rw-r--r-- | odb/qt/containers/list-traits.hxx | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/odb/qt/containers/list-traits.hxx b/odb/qt/containers/list-traits.hxx new file mode 100644 index 0000000..c9c3deb --- /dev/null +++ b/odb/qt/containers/list-traits.hxx @@ -0,0 +1,105 @@ +// file : odb/qt/containers/list-traits.hxx +// copyright : Copyright (c) 2009-2012 Code Synthesis Tools CC +// license : GNU GPL v2; see accompanying LICENSE file + +#ifndef ODB_QT_CONTAINERS_LIST_TRAITS_HXX +#define ODB_QT_CONTAINERS_LIST_TRAITS_HXX + +#include <odb/pre.hxx> + +#include <odb/vector-impl.hxx> +#include <odb/container-traits.hxx> +#include <odb/transaction.hxx> + +#include <odb/qt/containers/list.hxx> + +namespace odb +{ + template <typename V> + class access::container_traits<QOdbList<V> > + { + public: + static const container_kind kind = ck_ordered; + static const bool smart = true; + + typedef QOdbList<V> container_type; + + typedef V value_type; + typedef typename container_type::size_type index_type; + + typedef smart_ordered_functions<index_type, value_type> functions; + typedef ordered_functions<index_type, value_type> dumb_functions; + + public: + static void + persist (const container_type& c, const functions& f) + { + for (index_type i (0), n (c.size ()); i < n; ++i) + f.insert (i, c[i]); + + // Now that this container is persistent, start tracking changes. + // + c._start (); + } + + static void + load (container_type& c, bool more, const functions& f) + { + // Stop tracking changes. + // + c._stop (); + + // Load. + // + c.clear (); + while (more) + { + index_type dummy; + c.append (value_type ()); + more = f.select (dummy, c.modify_back ()); + } + + // Start tracking changes. + // + c._start (); + } + + static void + update (const container_type&, const functions&); + + static void + erase (const container_type* c, const functions& f) + { + f.delete_ (0); + + // Stop tracking changes. + // + if (c != 0) + c->_stop (); + } + + // Version of load() for dumb functions. Used to support + // inverse members of the container type. The implementation + // is identical to the smart one except we don't turn off/on + // change tracking. + // + static void + load (container_type& c, bool more, const dumb_functions& f) + { + c.clear (); + + while (more) + { + index_type dummy; + c.append (value_type ()); + more = f.select (dummy, c.modify_back ()); + } + } + }; +} + +#include <odb/qt/containers/list-traits.txx> + +#include <odb/post.hxx> + +#endif // ODB_QT_CONTAINERS_LIST_TRAITS_HXX |