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// file : odb/semantics/relational/foreign-key.cxx
// copyright : Copyright (c) 2009-2013 Code Synthesis Tools CC
// license : GNU GPL v3; see accompanying LICENSE file
#include <ostream>
#include <istream>
#include <cutl/compiler/type-info.hxx>
#include <odb/semantics/relational.hxx>
using namespace std;
namespace semantics
{
namespace relational
{
static const char* action_str[] = {"NO ACTION", "CASCADE"};
ostream&
operator<< (ostream& os, foreign_key::action_type v)
{
return os << action_str[v];
}
istream&
operator>> (istream& is, foreign_key::action_type& v)
{
string s;
getline (is, s);
if (!is.eof ())
is.setstate (istream::failbit);
if (!is.fail ())
{
if (s == "NO ACTION")
v = foreign_key::no_action;
else if (s == "CASCADE")
v = foreign_key::cascade;
else
is.setstate (istream::failbit);
}
return is;
}
foreign_key::
foreign_key (xml::parser& p, uscope& s, graph& g)
: key (p, s, g),
deferred_ (p.attribute ("deferred", false)),
on_delete_ (p.attribute ("on-delete", no_action))
{
using namespace xml;
p.next_expect (parser::start_element, xmlns, "references");
referenced_table_ = p.attribute<qname> ("table");
p.content (parser::complex);
for (parser::event_type e (p.peek ());
e == parser::start_element;
e = p.peek ())
{
if (p.qname () != xml::qname (xmlns, "column"))
break; // Not our elements.
p.next ();
referenced_columns_.push_back (p.attribute<uname> ("name"));
p.content (parser::empty);
p.next_expect (parser::end_element);
}
p.next_expect (parser::end_element);
}
void foreign_key::
serialize (xml::serializer& s) const
{
s.start_element (xmlns, "foreign-key");
key::serialize_attributes (s);
if (deferred ())
s.attribute ("deferred", true);
if (on_delete () != no_action)
s.attribute ("on-delete", on_delete ());
key::serialize_content (s);
// Referenced columns.
//
s.start_element (xmlns, "references");
s.attribute ("table", referenced_table ());
for (columns::const_iterator i (referenced_columns_.begin ());
i != referenced_columns_.end (); ++i)
{
s.start_element (xmlns, "column");
s.attribute ("name", *i);
s.end_element ();
}
s.end_element (); // references
s.end_element (); // foreign-key
}
// type info
//
namespace
{
struct init
{
init ()
{
unameable::parser_map_["foreign-key"] =
&unameable::parser_impl<foreign_key>;
using compiler::type_info;
{
type_info ti (typeid (foreign_key));
ti.add_base (typeid (unameable));
ti.add_base (typeid (key));
insert (ti);
}
}
} init_;
}
}
}
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