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// file : odb/common.hxx
// author : Boris Kolpackov <boris@codesynthesis.com>
// copyright : Copyright (c) 2009-2010 Code Synthesis Tools CC
// license : GNU GPL v3; see accompanying LICENSE file
#ifndef ODB_COMMON_HXX
#define ODB_COMMON_HXX
#include <string>
#include <cstddef> // std::size_t
#include <odb/context.hxx>
// Find id member.
//
struct id_member: traversal::class_
{
id_member ()
{
*this >> names_ >> member_;
}
semantics::data_member*
member () const
{
return member_.m_;
}
virtual void
traverse (semantics::class_& c)
{
member_.m_ = 0;
names (c);
}
private:
struct data_member: traversal::data_member
{
virtual void
traverse (semantics::data_member& m)
{
if (m.count ("id"))
m_ = &m;
}
semantics::data_member* m_;
};
data_member member_;
traversal::names names_;
};
// Traverse object columns.
//
struct object_columns_base: traversal::class_
{
virtual void
column (semantics::data_member&, std::string const& name, bool first) = 0;
// If you override this callback, always call the base.
//
virtual void
composite (semantics::data_member&);
object_columns_base (context& c)
: member_ (c, *this)
{
*this >> names_ >> member_;
*this >> inherits_ >> *this;
}
virtual void
traverse (semantics::class_&);
private:
struct member: traversal::data_member, context
{
member (context& c, object_columns_base& oc)
: context (c), oc_ (oc), first_ (true)
{
}
virtual void
traverse (semantics::data_member&);
private:
object_columns_base& oc_;
string prefix_;
bool first_;
};
member member_;
traversal::names names_;
traversal::inherits inherits_;
};
#endif // ODB_COMMON_HXX
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