diff options
author | Boris Kolpackov <boris@codesynthesis.com> | 2011-08-04 13:32:25 +0200 |
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committer | Boris Kolpackov <boris@codesynthesis.com> | 2011-08-04 13:32:25 +0200 |
commit | a815b90fe870d6d740c91a60ec0633f8bc256337 (patch) | |
tree | c8ac0b04e0a3e87f9b2bd8503e362dcee69ce06d /odb/boost/smart-ptr/wrapper-traits.hxx | |
parent | 7051803dcbde4c52507361d6b471746cc5e88dce (diff) |
Add support for boost::optional and boost::shared_ptr as value wrappers
New test: boost/common/optional.
Diffstat (limited to 'odb/boost/smart-ptr/wrapper-traits.hxx')
-rw-r--r-- | odb/boost/smart-ptr/wrapper-traits.hxx | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/odb/boost/smart-ptr/wrapper-traits.hxx b/odb/boost/smart-ptr/wrapper-traits.hxx new file mode 100644 index 0000000..5389eca --- /dev/null +++ b/odb/boost/smart-ptr/wrapper-traits.hxx @@ -0,0 +1,60 @@ +// file : odb/boost/smart-ptr/wrapper-traits.hxx +// author : Boris Kolpackov <boris@codesynthesis.com> +// copyright : Copyright (c) 2009-2011 Code Synthesis Tools CC +// license : GNU GPL v2; see accompanying LICENSE file + +#ifndef ODB_BOOST_SMART_PTR_WRAPPER_TRAITS_HXX +#define ODB_BOOST_SMART_PTR_WRAPPER_TRAITS_HXX + +#include <odb/pre.hxx> + +#include <boost/shared_ptr.hpp> + +#include <odb/wrapper-traits.hxx> + +namespace odb +{ + // Specialization for boost::shared_ptr. + // + template <typename T> + class wrapper_traits< ::boost::shared_ptr<T> > + { + public: + typedef T wrapped_type; + typedef ::boost::shared_ptr<T> wrapper_type; + + static const bool null_handler = true; + static const bool null_default = false; + + static bool + get_null (const wrapper_type& p) + { + return !p; + } + + static void + set_null (wrapper_type& p) + { + p.reset (); + } + + static const wrapped_type& + get_ref (const wrapper_type& p) + { + return *p; + } + + static wrapped_type& + set_ref (wrapper_type& p) + { + if (!p) + p.reset (new wrapped_type); + + return *p; + } + }; +} + +#include <odb/post.hxx> + +#endif // ODB_BOOST_SMART_PTR_WRAPPER_TRAITS_HXX |