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Diffstat (limited to 'odb/odb/traversal/relational/key.hxx')
-rw-r--r-- | odb/odb/traversal/relational/key.hxx | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/odb/odb/traversal/relational/key.hxx b/odb/odb/traversal/relational/key.hxx new file mode 100644 index 0000000..d0ba2d7 --- /dev/null +++ b/odb/odb/traversal/relational/key.hxx @@ -0,0 +1,50 @@ +// file : odb/traversal/relational/key.hxx +// license : GNU GPL v3; see accompanying LICENSE file + +#ifndef ODB_TRAVERSAL_RELATIONAL_KEY_HXX +#define ODB_TRAVERSAL_RELATIONAL_KEY_HXX + +#include <odb/semantics/relational/key.hxx> +#include <odb/traversal/relational/elements.hxx> + +namespace traversal +{ + namespace relational + { + struct contains: edge<semantics::relational::contains> + { + contains () {} + contains (node_dispatcher& n) {node_traverser (n);} + + virtual void + traverse (type&); + }; + + template <typename T> + struct key_template: node<T> + { + public: + virtual void + traverse (T& k) + { + contains (k); + } + + virtual void + contains (T& k) + { + contains (k, *this); + } + + virtual void + contains (T& k, edge_dispatcher& d) + { + this->iterate_and_dispatch (k.contains_begin (), k.contains_end (), d); + } + }; + + struct key: key_template<semantics::relational::key> {}; + } +} + +#endif // ODB_TRAVERSAL_RELATIONAL_KEY_HXX |