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// file : odb/relational/mysql/model.cxx
// copyright : Copyright (c) 2009-2012 Code Synthesis Tools CC
// license : GNU GPL v3; see accompanying LICENSE file
#include <sstream>
#include <odb/relational/model.hxx>
#include <odb/relational/mysql/context.hxx>
using namespace std;
namespace relational
{
namespace mysql
{
namespace model
{
namespace relational = relational::model;
struct object_columns: relational::object_columns, context
{
object_columns (base const& x): base (x) {}
virtual string
default_bool (semantics::data_member&, bool v)
{
// MySQL has TRUE and FALSE as just aliases for 1 and 0. Still
// use them for self-documentation.
//
return v ? "TRUE" : "FALSE";
}
virtual string
default_enum (semantics::data_member& m, tree en, string const& name)
{
// Make sure the column is mapped to an ENUM or integer type.
//
sql_type const& t (parse_sql_type (column_type (), m, false));
switch (t.type)
{
case sql_type::ENUM:
case sql_type::TINYINT:
case sql_type::SMALLINT:
case sql_type::MEDIUMINT:
case sql_type::INT:
case sql_type::BIGINT:
break;
default:
{
cerr << m.file () << ":" << m.line () << ":" << m.column ()
<< ": error: column with default value specified as C++ "
<< "enumerator must map to MySQL ENUM or integer type"
<< endl;
throw operation_failed ();
}
}
using semantics::enum_;
using semantics::enumerator;
enumerator& er (dynamic_cast<enumerator&> (*unit.find (en)));
enum_& e (er.enum_ ());
if (t.type == sql_type::ENUM)
{
// Assuming the enumerators in the C++ enum and MySQL ENUM are
// in the same order, calculate the poistion of the C++
// enumerator and use that as an index in the MySQL ENUM.
//
size_t pos (0);
for (enum_::enumerates_iterator i (e.enumerates_begin ()),
end (e.enumerates_end ()); i != end; ++i)
{
if (&i->enumerator () == &er)
break;
pos++;
}
if (pos < t.enumerators.size ())
return t.enumerators[pos];
else
{
cerr << m.file () << ":" << m.line () << ":" << m.column ()
<< ": error: unable to map C++ enumerator '" << name
<< "' to MySQL ENUM value" << endl;
throw operation_failed ();
}
}
else
{
ostringstream ostr;
if (e.unsigned_ ())
ostr << er.value ();
else
ostr << static_cast<long long> (er.value ());
return ostr.str ();
}
}
};
entry<object_columns> object_columns_;
}
}
}
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