diff options
Diffstat (limited to 'odb/qt/smart-ptr/lazy-pointer-traits.hxx')
-rw-r--r-- | odb/qt/smart-ptr/lazy-pointer-traits.hxx | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/odb/qt/smart-ptr/lazy-pointer-traits.hxx b/odb/qt/smart-ptr/lazy-pointer-traits.hxx new file mode 100644 index 0000000..89c1222 --- /dev/null +++ b/odb/qt/smart-ptr/lazy-pointer-traits.hxx @@ -0,0 +1,63 @@ +// file : odb/qt/smart-ptr/lazy-pointer-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_SMART_PTR_LAZY_POINTER_TRAITS_HXX +#define ODB_QT_SMART_PTR_LAZY_POINTER_TRAITS_HXX + +#include <odb/pre.hxx> + +#include <odb/pointer-traits.hxx> +#include <odb/qt/smart-ptr/lazy-ptr.hxx> + +namespace odb +{ + template <typename T> + class pointer_traits<QLazySharedPointer<T> > + { + public: + static const pointer_kind kind = pk_shared; + static const bool lazy = true; + + typedef T element_type; + typedef QLazySharedPointer<element_type> pointer_type; + typedef QSharedPointer<element_type> eager_pointer_type; + + static bool + null_ptr (const pointer_type& p) + { + return !p; + } + + template <class O /* = T */> + static typename object_traits<O>::id_type + object_id (const pointer_type& p) + { + return p.template objectId<O> (); + } + }; + + template <typename T> + class pointer_traits<QLazyWeakPointer<T> > + { + public: + static const pointer_kind kind = pk_weak; + static const bool lazy = true; + + typedef T element_type; + typedef QLazyWeakPointer<element_type> pointer_type; + typedef QLazySharedPointer<element_type> strong_pointer_type; + typedef QWeakPointer<element_type> eager_pointer_type; + + static strong_pointer_type + lock (const pointer_type& p) + { + return p.toStrongRef (); + } + }; +} + +#include <odb/post.hxx> + +#endif // ODB_QT_SMART_PTR_LAZY_POINTER_TRAITS_HXX |