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// file : odb/relational/pgsql/schema.cxx
// author : Constantin Michael <constantin@codesynthesis.com>
// copyright : Copyright (c) 2009-2011 Code Synthesis Tools CC
// license : GNU GPL v3; see accompanying LICENSE file
#include <odb/relational/schema.hxx>
#include <odb/relational/pgsql/common.hxx>
#include <odb/relational/pgsql/context.hxx>
namespace relational
{
namespace pgsql
{
namespace schema
{
namespace relational = relational::schema;
//
// Drop.
//
struct drop_common: virtual relational::drop_common
{
virtual void
drop_table (string const& table)
{
os << "DROP TABLE IF EXISTS " << quote_id (table) << " CASCADE"
<< endl;
}
};
struct member_drop: relational::member_drop, drop_common
{
member_drop (base const& x): base (x) {}
};
entry<member_drop> member_drop_;
struct class_drop: relational::class_drop, drop_common
{
class_drop (base const& x): base (x) {}
};
entry<class_drop> class_drop_;
//
// Create.
//
struct object_columns: relational::object_columns, context
{
object_columns (base const& x): base (x) {}
virtual void
type (semantics::data_member& m)
{
if (m.count ("auto"))
{
const sql_type& t (column_sql_type (m));
if (t.type == sql_type::INTEGER)
os << "SERIAL";
else if (t.type == sql_type::BIGINT)
os << "BIGSERIAL";
else
{
cerr << m.file () << ":" << m.line () << ":" << m.column ()
<< ": error: automatically assigned object ID must map "
<< "to PostgreSQL INTEGER or BIGINT" << endl;
throw generation_failed ();
}
}
else
{
base::type (m);
}
}
virtual void
reference (semantics::data_member&)
{
}
};
entry<object_columns> object_columns_;
struct object_columns_references:
object_columns_base, relational::common, context
{
object_columns_references (emitter& e,
ostream& os,
string const& table,
string const& prefix = string ())
: relational::common (e, os),
table_ (table),
prefix_ (prefix)
{
}
virtual bool
column (semantics::data_member& m, string const& name, bool)
{
semantics::class_* c (object_pointer (member_type (m, prefix_)));
if (c != 0 && !inverse (m))
{
pre_statement ();
os << "ALTER TABLE " << quote_id (table_) << endl
<< " ADD FOREIGN KEY (" << quote_id (name) << ")" <<
endl
<< " REFERENCES " << quote_id (table_name (*c)) << endl
<< " INITIALLY DEFERRED" << endl;
post_statement ();
}
return true;
}
private:
string table_;
string prefix_;
};
struct member_create: object_members_base, context
{
member_create (emitter& e, ostream& os, relational::tables& tables)
: object_members_base (false, true),
e_ (e),
os_ (os),
tables_ (tables)
{
}
virtual void
container (semantics::data_member& m)
{
using semantics::type;
using semantics::data_member;
// Ignore inverse containers of object pointers.
//
if (inverse (m, "value"))
return;
string const& name (table_name (m, table_prefix_));
if (tables_.count (name))
return;
type& t (m.type ());
type& vt (container_vt (t));
if (semantics::class_* cvt = comp_value (vt))
{
object_columns_references ocr (e_, os_, name);
ocr.traverse_composite (m, *cvt, "value", "value");
}
else
{
object_columns_references ocr (e_, os_, name, "value");
string const& name (column_name (m, "value", "value"));
ocr.column (m, name, true);
}
tables_.insert (name);
}
private:
emitter& e_;
ostream& os_;
relational::tables& tables_;
};
struct class_create: relational::class_create
{
class_create (base const& x): base (x) {}
virtual void
traverse (type& c)
{
if (pass_ != 2)
{
base::traverse (c);
return;
}
if (c.file () != unit.file ())
return;
if (!c.count ("object") || abstract (c))
return;
string const& name (table_name (c));
if (tables_[pass_].count (name))
return;
object_columns_references ocr (e_, os_, name);
ocr.traverse (c);
tables_[pass_].insert (name);
member_create mc (e_, os_, tables_[pass_]);
mc.traverse (c);
}
};
entry<class_create> class_create_;
}
}
}
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