New example, inheritance/polymorphism

Also move the inheritance example to inheritance/reuse.

1 files changed, 81 insertions, 0 deletions

diff --git a/inheritance/reuse/driver.cxx b/inheritance/reuse/driver.cxx
new file mode 100644
index 0000000..b9a22da
--- /dev/null
+++ b/inheritance/reuse/driver.cxx
@@ -0,0 +1,81 @@
+// file      : inheritance/reuse/driver.cxx
+// 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 the 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;
+  }
+}