diff options
| -rw-r--r-- | odb/nullable.hxx | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/odb/nullable.hxx b/odb/nullable.hxx index ccfe01b..80a76c1 100644 --- a/odb/nullable.hxx +++ b/odb/nullable.hxx @@ -60,6 +60,39 @@ namespace odb } template <typename T> + inline bool + operator== (const nullable<T>& x, const nullable<T>& y) + { + return x.null () == y.null () && (x.null () || *x == *y); + } + + template <typename T> + inline bool + operator!= (const nullable<T>& x, const nullable<T>& y) {return !(x == y);} + + template <typename T> + inline bool + operator< (const nullable<T>& x, const nullable<T>& y) + { + return x.null () > y.null () || (!x.null () && !y.null () && *x < *y); + } + + template <typename T> + inline bool + operator> (const nullable<T>& x, const nullable<T>& y) + { + return x.null () < y.null () || (!x.null () && !y.null () && *x > *y); + } + + template <typename T> + inline bool + operator<= (const nullable<T>& x, const nullable<T>& y) {return !(x > y);} + + template <typename T> + inline bool + operator>= (const nullable<T>& x, const nullable<T>& y) {return !(x < y);} + + template <typename T> inline nullable<T>:: nullable () : null_ (true) |