diff options
author | Boris Kolpackov <boris@codesynthesis.com> | 2011-10-24 16:32:51 +0200 |
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committer | Boris Kolpackov <boris@codesynthesis.com> | 2011-10-24 16:32:51 +0200 |
commit | 08a47c70ad517b80b72914d47d547463f576bcd3 (patch) | |
tree | 8a6ab07cf05e8668ea3c91735dfe97e2a98f3f05 /odb/semantics/relational/key.hxx | |
parent | a976183dc95a8b7a9bd7a308c3ea94f08982c426 (diff) |
Generate database schema from database model instead of C++ model
We now first create the so-called database model from C++ model and
then use that to generate the database schema. The new approach also
adds more general support for primary/foreign keys, including multi-
column keys. Finally, for MySQL we now generate out-of-line foreign
key definitions. Because MySQL does not support deferred constraints
checking, deferred foreign keys are written commented out, for
documentation.
Diffstat (limited to 'odb/semantics/relational/key.hxx')
-rw-r--r-- | odb/semantics/relational/key.hxx | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/odb/semantics/relational/key.hxx b/odb/semantics/relational/key.hxx new file mode 100644 index 0000000..7e7a847 --- /dev/null +++ b/odb/semantics/relational/key.hxx @@ -0,0 +1,100 @@ +// file : odb/semantics/relational/key.hxx +// author : Boris Kolpackov <boris@codesynthesis.com> +// copyright : Copyright (c) 2009-2011 Code Synthesis Tools CC +// license : GNU GPL v3; see accompanying LICENSE file + +#ifndef ODB_SEMANTICS_RELATIONAL_KEY_HXX +#define ODB_SEMANTICS_RELATIONAL_KEY_HXX + +#include <odb/semantics/relational/elements.hxx> +#include <odb/semantics/relational/column.hxx> + +namespace semantics +{ + namespace relational + { + class key; + + class contains: public edge + { + public: + typedef relational::key key_type; + typedef relational::column column_type; + + key_type& + key () const + { + return *key_; + } + + column_type& + column () const + { + return *column_; + } + + public: + void + set_left_node (key_type& n) + { + key_ = &n; + } + + void + set_right_node (column_type& n) + { + column_ = &n; + } + + protected: + key_type* key_; + column_type* column_; + }; + + class key: public nameable + { + typedef std::vector<contains*> contains_list; + + public: + typedef + pointer_iterator<contains_list::const_iterator> + contains_iterator; + + contains_iterator + contains_begin () const + { + return contains_.begin (); + } + + contains_iterator + contains_end () const + { + return contains_.end (); + } + + contains_list::size_type + contains_size () const + { + return contains_.size (); + } + + public: + void + add_edge_left (contains& e) + { + contains_.push_back (&e); + } + + protected: + key (string const& id) + : nameable (id) + { + } + + private: + contains_list contains_; + }; + } +} + +#endif // ODB_SEMANTICS_RELATIONAL_KEY_HXX |