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+// file : inheritance/driver.cxx
+// author : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : not copyrighted - public domain
+
+#include <memory> // std::auto_ptr
+#include <iostream>
+
+#include <odb/database.hxx>
+#include <odb/transaction.hxx>
+
+#include "database.hxx" // create_database
+
+#include "employee.hxx"
+#include "employee-odb.hxx"
+
+using namespace std;
+using namespace odb::core;
+
+int
+main (int argc, char* argv[])
+{
+ try
+ {
+ auto_ptr<database> db (create_database (argc, argv));
+
+ // Add a few employees and contractors to the database.
+ //
+ {
+ permanent_employee p1 ("John", "Doe");
+ permanent_employee p2 ("Jane", "Doe");
+
+ temporary_employee t1 ("John", "Smith", 6);
+ temporary_employee t2 ("Jane", "Smith", 12);
+
+ contractor c1 ("Joe", "Doe", "j.doe@example.com");
+ contractor c2 ("Joe", "Smith", "j.smith@example.com");
+
+ transaction t (db->begin ());
+ db->persist (p1);
+ db->persist (p2);
+ db->persist (t1);
+ db->persist (t2);
+ db->persist (c1);
+ db->persist (c2);
+ t.commit ();
+ }
+
+ // Lookup a contractor based on the email address.
+ //
+ {
+ transaction t (db->begin ());
+ auto_ptr<contractor> c (db->load<contractor> ("j.smith@example.com"));
+ t.commit ();
+
+ cout << c->first () << " " << c->last () << " " << c->email () << endl;
+ }
+
+ // Query for temporary employees that have John as first name.
+ //
+ {
+ typedef odb::query<temporary_employee> query;
+ typedef odb::result<temporary_employee> result;
+
+ transaction t (db->begin ());
+
+ result r (db->query<temporary_employee> (query::first == "John"));
+
+ for (result::iterator i (r.begin ()); i != r.end (); ++i)
+ {
+ cout << i->first () << " " << i->last () << " "
+ << i->duration () << " months" << endl;
+ }
+
+ t.commit ();
+ }
+ }
+ catch (const odb::exception& e)
+ {
+ cerr << e.what () << endl;
+ return 1;
+ }
+}