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Diffstat (limited to 'odb/result.txx')
-rw-r--r-- | odb/result.txx | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/odb/result.txx b/odb/result.txx new file mode 100644 index 0000000..c1bed1c --- /dev/null +++ b/odb/result.txx @@ -0,0 +1,52 @@ +// file : odb/result.txx +// copyright : Copyright (c) 2009-2013 Code Synthesis Tools CC +// license : GNU GPL v2; see accompanying LICENSE file + +#include <cassert> + +namespace odb +{ + template <typename T> + typename object_traits<T>::pointer_type result<T>:: + one () + { + typedef typename object_traits<T>::pointer_type pointer_type; + + iterator i (begin ()); + + if (i != end ()) + { + pointer_type o (i.load ()); + assert (++i == end ()); // More than one element in query_one() result. + return o; + } + + return pointer_type (); + } + + template <typename T> + bool result<T>:: + one (T& o) + { + iterator i (begin ()); + + if (i != end ()) + { + i.load (o); + assert (++i == end ()); // More than one element in query_one() result. + return true; + } + + return false; + } + + template <typename T> + void result<T>:: + value (T& o) + { + iterator i (begin ()); + assert (i != end ()); // Zero elements in query_value() result. + i.load (o); + assert (++i == end ()); // More than one element in query_value() result. + } +} |