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authorMichael Shepanski <michael@codesynthesis.com>2014-11-04 16:10:03 +1100
committerBoris Kolpackov <boris@codesynthesis.com>2014-11-10 16:50:48 +0200
commit5d693f6a783b8b206b9543328eb34f942db10ecf (patch)
treefb764021cb087676e751a275ba78fad440e80b39 /odb/sqlite/database.hxx
parent89821afa0e8346df6772a479754c9a1947300b57 (diff)
Implement {query,execute}_{one,value}() shortcut functions
Useful in situations where the query is know to return at most one element (*_one) or exactly one element (*_value).
Diffstat (limited to 'odb/sqlite/database.hxx')
-rw-r--r--odb/sqlite/database.hxx62
1 files changed, 62 insertions, 0 deletions
diff --git a/odb/sqlite/database.hxx b/odb/sqlite/database.hxx
index fd4a736..0eef6d5 100644
--- a/odb/sqlite/database.hxx
+++ b/odb/sqlite/database.hxx
@@ -319,6 +319,68 @@ namespace odb
result<T>
query (const odb::query_base&);
+ // Query one API.
+ //
+ template <typename T>
+ typename object_traits<T>::pointer_type
+ query_one ();
+
+ template <typename T>
+ bool
+ query_one (T& object);
+
+ template <typename T>
+ T
+ query_value ();
+
+ template <typename T>
+ typename object_traits<T>::pointer_type
+ query_one (const char*);
+
+ template <typename T>
+ bool
+ query_one (const char*, T& object);
+
+ template <typename T>
+ T
+ query_value (const char*);
+
+ template <typename T>
+ typename object_traits<T>::pointer_type
+ query_one (const std::string&);
+
+ template <typename T>
+ bool
+ query_one (const std::string&, T& object);
+
+ template <typename T>
+ T
+ query_value (const std::string&);
+
+ template <typename T>
+ typename object_traits<T>::pointer_type
+ query_one (const sqlite::query_base&);
+
+ template <typename T>
+ bool
+ query_one (const sqlite::query_base&, T& object);
+
+ template <typename T>
+ T
+ query_value (const sqlite::query_base&);
+
+ template <typename T>
+ typename object_traits<T>::pointer_type
+ query_one (const odb::query_base&);
+
+ template <typename T>
+ bool
+ query_one (const odb::query_base&, T& object);
+
+ template <typename T>
+ T
+ query_value (const odb::query_base&);
+
// Query preparation.
//
template <typename T>