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// file : odb/relational/pgsql/schema.cxx
// copyright : Copyright (c) 2009-2012 Code Synthesis Tools CC
// license : GNU GPL v3; see accompanying LICENSE file
#include <set>
#include <odb/diagnostics.hxx>
#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;
//
// Drop.
//
struct drop_table: relational::drop_table, context
{
drop_table (base const& x): base (x) {}
virtual void
drop (sema_rel::qname const& table)
{
os << "DROP TABLE IF EXISTS " << quote_id (table) <<
" CASCADE" << endl;
}
};
entry<drop_table> drop_table_;
//
// Create.
//
struct create_foreign_key;
struct create_table: relational::create_table, context
{
create_table (base const& x): base (x) {}
void
traverse (sema_rel::table&);
private:
friend class create_foreign_key;
set<qname> tables_; // Set of tables we have already defined.
};
entry<create_table> create_table_;
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 ()));
if (t.type == sql_type::INTEGER)
os << "SERIAL";
else if (t.type == sql_type::BIGINT)
os << "BIGSERIAL";
else
{
location const& l (c.get<location> ("cxx-location"));
error (l) << "automatically assigned object id must map "
<< "to PostgreSQL INTEGER or BIGINT" << endl;
throw operation_failed ();
}
}
else
base::type (c, auto_);
}
};
entry<create_column> create_column_;
struct create_foreign_key: relational::create_foreign_key, context
{
create_foreign_key (schema_format f, relational::create_table& ct)
: base (f, ct)
{
}
create_foreign_key (base const& x): base (x) {}
virtual void
traverse (sema_rel::foreign_key& fk)
{
// If the referenced table has already been defined, do the
// foreign key definition in the table definition. Otherwise
// postpone it until pass 2 where we do it via ALTER TABLE
// (see add_foreign_key below).
//
create_table& ct (static_cast<create_table&> (create_table_));
if (ct.tables_.find (fk.referenced_table ()) != ct.tables_.end ())
{
base::traverse (fk);
fk.set ("pgsql-fk-defined", true); // Mark it as defined.
}
}
virtual void
deferred ()
{
os << endl
<< " INITIALLY DEFERRED";
}
};
entry<create_foreign_key> create_foreign_key_;
struct add_foreign_key: create_foreign_key, relational::common
{
add_foreign_key (schema_format f, relational::create_table& ct)
: create_foreign_key (f, ct), common (ct.emitter (), ct.stream ())
{
}
virtual void
traverse (sema_rel::foreign_key& fk)
{
if (!fk.count ("pgsql-fk-defined"))
{
sema_rel::table& t (dynamic_cast<sema_rel::table&> (fk.scope ()));
pre_statement ();
os << "ALTER TABLE " << quote_id (t.name ()) << " ADD" << endl;
base::create (fk);
os << endl;
post_statement ();
}
}
};
void create_table::
traverse (sema_rel::table& t)
{
if (pass_ == 1)
{
tables_.insert (t.name ()); // Add it before to cover self-refs.
base::traverse (t);
return;
}
// Add foreign keys.
//
add_foreign_key fk (format_, *this);
trav_rel::unames n (fk);
names (t, n);
}
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_;
}
}
}
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