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// file : odb/relational/pgsql/schema.cxx
// copyright : Copyright (c) 2009-2013 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>
using namespace std;
namespace relational
{
namespace pgsql
{
namespace schema
{
namespace relational = relational::schema;
using relational::table_set;
//
// Drop.
//
struct drop_table: relational::drop_table, context
{
drop_table (base const& x): base (x) {}
virtual void
traverse (sema_rel::table& t, bool migration)
{
// For PostgreSQL we use the CASCADE clause to drop foreign keys.
//
if (pass_ != 2)
return;
pre_statement ();
os << "DROP TABLE " << (migration ? "" : "IF EXISTS ") <<
quote_id (t.name ()) << " CASCADE" << endl;
post_statement ();
}
};
entry<drop_table> drop_table_;
//
// Create.
//
struct create_column: relational::create_column, context
{
create_column (base const& x): base (x) {}
virtual void
type (sema_rel::column& c, bool auto_)
{
if (auto_)
{
// This should never fail since we have already parsed this.
//
sql_type const& t (parse_sql_type (c.type ()));
// The model creation code makes sure it is one of these type.
//
if (t.type == sql_type::INTEGER)
os << "SERIAL";
else if (t.type == sql_type::BIGINT)
os << "BIGSERIAL";
}
else
base::type (c, auto_);
}
};
entry<create_column> create_column_;
struct create_foreign_key: relational::create_foreign_key, context
{
create_foreign_key (base const& x): base (x) {}
virtual void
deferrable (sema_rel::deferrable d)
{
os << endl
<< " INITIALLY " << d;
}
};
entry<create_foreign_key> create_foreign_key_;
struct create_index: relational::create_index, context
{
create_index (base const& x): base (x) {}
virtual void
create (sema_rel::index& in)
{
os << "CREATE ";
if (!in.type ().empty ())
{
// Handle the CONCURRENTLY keyword.
//
string const& t (in.type ());
if (t == "concurrently" || t == "CONCURRENTLY")
{
os << "INDEX " << t;
}
else
{
size_t p (t.rfind (' '));
string s (t, (p != string::npos ? p + 1 : 0), string::npos);
if (s == "concurrently" || s == "CONCURRENTLY")
os << string (t, 0, p) << " INDEX " << s;
else
os << t << " INDEX";
}
}
else
os << "INDEX";
os << " " << name (in) << endl
<< " ON " << table_name (in);
if (!in.method ().empty ())
os << " USING " << in.method ();
os << " (";
columns (in);
os << ")" << endl;
if (!in.options ().empty ())
os << ' ' << in.options () << endl;
}
};
entry<create_index> create_index_;
//
// Alter.
//
struct alter_column: relational::alter_column, context
{
alter_column (base const& x): base (x) {}
virtual void
alter (sema_rel::column& c)
{
os << quote_id (c.name ()) << " " <<
(c.null () ? "DROP" : "SET") << " NOT NULL";
}
};
entry<alter_column> alter_column_;
}
}
}
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