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// file : evolution/add-foreign-key/driver.cxx
// copyright : Copyright (c) 2009-2019 Code Synthesis Tools CC
// license : GNU GPL v2; see accompanying LICENSE file
// Test adding a foreign key.
//
#include <memory> // std::auto_ptr
#include <cassert>
#include <iostream>
#include <odb/database.hxx>
#include <odb/transaction.hxx>
#include <odb/schema-catalog.hxx>
#include <common/config.hxx> // DATABASE_XXX
#include <common/common.hxx>
#include "test2.hxx"
#include "test3.hxx"
#include "test2-odb.hxx"
#include "test3-odb.hxx"
using namespace std;
using namespace odb::core;
int
main (int argc, char* argv[])
{
try
{
auto_ptr<database> db (create_database (argc, argv, false));
bool embedded (schema_catalog::exists (*db));
// 1 - base version
// 2 - migration
// 3 - current version
//
unsigned short pass (*argv[argc - 1] - '0');
switch (pass)
{
case 1:
{
using namespace v2;
if (embedded)
{
transaction t (db->begin ());
schema_catalog::drop_schema (*db);
schema_catalog::create_schema (*db, "", false);
schema_catalog::migrate_schema (*db, 2);
t.commit ();
}
object o (1);
{
transaction t (db->begin ());
db->persist (o);
t.commit ();
}
break;
}
case 2:
{
using namespace v3;
#ifdef DATABASE_SQLITE
// In SQLite we can only add foreign keys inline in the column
// definition.
//
db->connection ()->execute ("PRAGMA foreign_keys=OFF");
#endif
if (embedded)
{
transaction t (db->begin ());
schema_catalog::migrate_schema_pre (*db, 3);
t.commit ();
}
// Both pointers are now NULL.
//
{
transaction t (db->begin ());
auto_ptr<object> p (db->load<object> (1));
assert (p->o1 == 0 && p->o2 == 0);
// Migration. The foreign key constraint is not yet there.
//
p->o1 = new object1 (1);
p->o2 = new object2 (1);
db->update (*p);
t.commit ();
}
// Migration. Add the missing objects.
//
object1 o1 (1);
object2 o2 (1);
{
transaction t (db->begin ());
db->persist (o1);
db->persist (o2);
t.commit ();
}
if (embedded)
{
transaction t (db->begin ());
schema_catalog::migrate_schema_post (*db, 3);
t.commit ();
}
break;
}
case 3:
{
using namespace v3;
{
transaction t (db->begin ());
auto_ptr<object> p (db->load<object> (1));
assert (p->o1->id_ == 1);
assert (p->o2->id_ == 1);
t.commit ();
}
// Now the foreign key constraint is there.
//
try
{
object o (2);
o.o1 = new object1 (2);
o.o2 = new object2 (2);
transaction t (db->begin ());
db->persist (o);
assert (false);
}
catch (const odb::exception& ) {}
// As well as the NOT NULL.
//
#ifndef DATABASE_SQLITE
try
{
object o (3);
o.o2 = 0;
transaction t (db->begin ());
db->persist (o);
assert (false);
}
catch (const odb::exception& ) {}
#endif
break;
}
default:
{
cerr << "unknown pass number '" << argv[argc - 1] << "'" << endl;
return 1;
}
}
}
catch (const odb::exception& e)
{
cerr << e.what () << endl;
return 1;
}
}
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