// file : boost/driver.cxx // copyright : not copyrighted - public domain #include <memory> // std::auto_ptr #include <iostream> #include <odb/database.hxx> #include <odb/session.hxx> #include <odb/transaction.hxx> #include "database.hxx" // create_database #include "employee.hxx" #include "employee-odb.hxx" using namespace std; using namespace boost::gregorian; using namespace odb::core; int main (int argc, char* argv[]) { using boost::shared_ptr; try { auto_ptr<database> db (create_database (argc, argv)); // Create a few persistent objects. // { // Simple Tech Ltd. // { shared_ptr<employer> er (new employer ("Simple Tech Ltd")); shared_ptr<employee> john ( new employee ("John", "Doe", date (1975, Jan, 1), er)); shared_ptr<employee> jane ( new employee ("Jane", "Q", "Doe", date (1976, Feb, 2), er)); john->emails ().insert ("john_d@example.com"); john->emails ().insert ("john.doe@example.com"); jane->emails ().insert ("jane_d@example.com"); jane->emails ().insert ("jane.doe@example.com"); // Set the inverse side of the employee-employer relationship. // er->employees ().push_back (john); er->employees ().push_back (jane); transaction t (db->begin ()); db->persist (er); db->persist (john); db->persist (jane); t.commit (); } // Complex Systems Inc. // { shared_ptr<employer> er (new employer ("Complex Systems Inc")); shared_ptr<employee> john ( new employee ("John", "Z", "Smith", date (1977, Mar, 3), er)); shared_ptr<employee> jane ( new employee ("Jane", "Smith", date (1978, Apr, 4), er)); john->emails ().insert ("john_s@example.com"); john->emails ().insert ("john.smith@example.com"); jane->emails ().insert ("jane_s@example.com"); jane->emails ().insert ("jane.smith@example.com"); // Set the inverse side of the employee-employer relationship. // er->employees ().push_back (john); er->employees ().push_back (jane); transaction t (db->begin ()); db->persist (er); db->persist (john); db->persist (jane); t.commit (); } } // Load Simple Tech Ltd and print its employees. // { session s; transaction t (db->begin ()); shared_ptr<employer> stl (db->load<employer> ("Simple Tech Ltd")); employees& es (stl->employees ()); for (employees::iterator i (es.begin ()); i != es.end (); ++i) { lazy_weak_ptr<employee>& lwp (*i); shared_ptr<employee> p (lwp.load ()); // Load and lock. cout << p->first () << " "; if (p->middle ()) cout << *p->middle () << " "; cout << p->last () << endl; cout << " born: " << p->born () << endl << " employer: " << p->employer ()->name () << endl; for (emails::const_iterator j (p->emails ().begin ()); j != p->emails ().end (); ++j) { cout << " email: " << *j << endl; } cout << endl; } t.commit (); } typedef odb::query<employee> query; typedef odb::result<employee> result; // Search for Complex Systems Inc employees that were born before // April 1978. // { session s; transaction t (db->begin ()); result r (db->query<employee> ( query::employer->name == "Complex Systems Inc" && query::born < date (1978, Apr, 1))); for (result::iterator i (r.begin ()); i != r.end (); ++i) cout << i->first () << " " << i->last () << " " << i->born () << endl; cout << endl; t.commit (); } // Search for all the employees that don't have a middle name. // { session s; transaction t (db->begin ()); result r (db->query<employee> (query::middle.is_null ())); for (result::iterator i (r.begin ()); i != r.end (); ++i) cout << i->first () << " " << i->last () << endl; t.commit (); } } catch (const odb::exception& e) { cerr << e.what () << endl; return 1; } }