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-rw-r--r--odb/cache-traits.hxx180
1 files changed, 1 insertions, 179 deletions
diff --git a/odb/cache-traits.hxx b/odb/cache-traits.hxx
index 1e5ccdb..c0c1272 100644
--- a/odb/cache-traits.hxx
+++ b/odb/cache-traits.hxx
@@ -11,145 +11,15 @@
#include <odb/forward.hxx>
#include <odb/session.hxx>
#include <odb/pointer-traits.hxx>
+#include <odb/no-op-cache-traits.hxx>
namespace odb
{
- // pointer_cache_type
- //
- // Used to convert an object pointer to the canonical form (non-const),
- // suitable for insertion into the cache.
- //
- template <typename P,
- typename E = typename pointer_traits<P>::element_type,
- typename O = typename object_traits<E>::object_type,
- pointer_kind pk = pointer_traits<P>::kind>
- struct pointer_cache_type
- {
- typedef typename object_traits<O>::pointer_type pointer_type;
-
- static pointer_type
- convert (const P& p)
- {
- return pointer_traits<P>::const_pointer_cast (p);
- }
- };
-
- template <typename P, typename T, pointer_kind pk>
- struct pointer_cache_type<P, T, T, pk>
- {
- // If element_type and object_type are the same, then it is already
- // the canonical pointer.
- //
- static const P&
- convert (const P& p) {return p;}
- };
-
- template <typename P, typename E, typename O>
- struct pointer_cache_type<P, E, O, pk_unique>
- {
- // If the pointer is unique, then casting it can transfer ownership.
- // So return null pointer, which will be ignored down the chain.
- //
- typedef typename object_traits<O>::pointer_type pointer_type;
-
- static pointer_type
- convert (const P&) {return pointer_type ();}
- };
-
- template <typename P, typename T>
- struct pointer_cache_type<P, T, T, pk_unique>
- {
- typedef typename object_traits<T>::pointer_type pointer_type;
-
- static pointer_type
- convert (const P&) {return pointer_type ();}
- };
-
- // reference_cache_type
- //
- // Used to convert an object reference to the canonical form (non-const),
- // suitable for insertion into the cache.
- //
- template <typename T,
- typename O = typename object_traits<T>::object_type>
- struct reference_cache_type
- {
- static O&
- convert (T& r)
- {
- return const_cast<O&> (r);
- }
- };
-
- template <typename T>
- struct reference_cache_type<T, T>
- {
- // If the types are the same, then it is already the canonical form.
- //
- static T&
- convert (T& r) {return r;}
- };
-
// pointer_cache_traits
//
// Caching traits for objects passed by pointer. P should be the canonical
// pointer (non-const).
//
- template <typename P>
- struct no_id_pointer_cache_traits
- {
- typedef P pointer_type;
- struct position_type {};
-
- static position_type
- insert (odb::database&, const pointer_type&)
- {
- return position_type ();
- }
- };
-
- template <typename P>
- struct no_op_pointer_cache_traits
- {
- typedef P pointer_type;
- typedef typename pointer_traits<pointer_type>::element_type object_type;
- typedef typename object_traits<object_type>::id_type id_type;
- struct position_type {};
-
- struct insert_guard
- {
- insert_guard () {}
- insert_guard (const position_type&) {}
-
- position_type
- position () const {return position_type ();}
-
- void
- release () {}
-
- void
- reset (const position_type&) {}
- };
-
- static position_type
- insert (odb::database&, const id_type&, const pointer_type&)
- {
- return position_type ();
- }
-
- static position_type
- insert (odb::database&, const pointer_type&) {return position_type ();}
-
- static pointer_type
- find (odb::database&, const id_type&) {return pointer_type ();}
-
- static void
- erase (odb::database&, const id_type&) {}
-
- static void
- erase (const position_type&) {}
- };
-
template <typename P, pointer_kind pk>
struct pointer_cache_traits_impl
{
@@ -245,54 +115,6 @@ namespace odb
// canonical object type (non-const). Only if the object pointer
// kind is raw do we add the object to the session.
//
- template <typename T>
- struct no_id_reference_cache_traits
- {
- typedef T object_type;
- struct position_type {};
-
- static position_type
- insert (odb::database&, object_type&)
- {
- return position_type ();
- }
- };
-
- template <typename T>
- struct no_op_reference_cache_traits
- {
- typedef T object_type;
- typedef typename object_traits<object_type>::id_type id_type;
- struct position_type {};
-
- struct insert_guard
- {
- insert_guard () {}
- insert_guard (const position_type&) {}
-
- position_type
- position () const {return position_type ();}
-
- void
- release () {}
-
- void
- reset () {}
- };
-
- static position_type
- insert (odb::database&, const id_type&, object_type&)
- {
- return position_type ();
- }
-
- static position_type
- insert (odb::database&, object_type&)
- {
- return position_type ();
- }
- };
-
template <typename T, pointer_kind pk>
struct reference_cache_traits_impl: no_op_reference_cache_traits<T> {};