diff options
author | Boris Kolpackov <boris@codesynthesis.com> | 2011-03-10 08:44:28 +0200 |
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committer | Boris Kolpackov <boris@codesynthesis.com> | 2011-03-21 15:39:59 +0200 |
commit | 7ae497743c7b042904fe1f6b4153ab3f4763ff2b (patch) | |
tree | 08ba3f742f20d16d893856ccceb070094bd69225 /odb/relational/context.hxx | |
parent | 2436f20262a41bd1cafa5107ab6d6799c03e0964 (diff) |
Split MySQL code generator into common and db-specific parts
The common part (in relational/) still has some MySQL-specific parts.
Also, add the notion of the current context which is used to avoid
explicitly passing the context object to every generator's c-tor.
Diffstat (limited to 'odb/relational/context.hxx')
-rw-r--r-- | odb/relational/context.hxx | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/odb/relational/context.hxx b/odb/relational/context.hxx new file mode 100644 index 0000000..fbd6059 --- /dev/null +++ b/odb/relational/context.hxx @@ -0,0 +1,81 @@ +// file : odb/relational/context.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_RELATIONAL_CONTEXT_HXX +#define ODB_RELATIONAL_CONTEXT_HXX + +#include <odb/context.hxx> + +namespace relational +{ + class context: public virtual ::context + { + public: + // Return true if an object or value type has members for which + // the image can grow. + // + bool + grow (semantics::class_&); + + // The same for a member's value type. + // + bool + grow (semantics::data_member&); + + bool + grow (semantics::data_member&, semantics::type&, string const& key_prefix); + + public: + // Quote SQL identifier. + // + string + quote_id (string const&) const; + + public: + context (); + + static context& + current () + { + return dynamic_cast<context&> (root_context::current ()); + } + + protected: + // The default implementation returns false. + // + virtual bool + grow_impl (semantics::class_&); + + virtual bool + grow_impl (semantics::data_member&); + + virtual bool + grow_impl (semantics::data_member&, + semantics::type&, + string const&); + + // The default implementation uses the ISO quoting (""). + // + virtual string + quote_id_impl (string const&) const; + + protected: + struct data; + typedef context base_context; + + context (data*); + + protected: + struct data: root_context::data + { + data (std::ostream& os): root_context::data (os) {} + }; + data* data_; + }; +} + +#include <odb/relational/context.ixx> + +#endif // ODB_RELATIONAL_CONTEXT_HXX |