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authorBoris Kolpackov <boris@codesynthesis.com>2012-03-02 12:31:38 +0200
committerBoris Kolpackov <boris@codesynthesis.com>2012-03-02 12:31:38 +0200
commitd43a0047151d490dcd061e3f105bfc4eb9fac854 (patch)
tree93546657349fc5d8529376b7235ecc01bdaa73f2 /c++11/driver.cxx
parentc55878df67c400d9ac940ee2d8dbd6e922af5ac3 (diff)
New example that shows C++11 support, build infrastructure for C++11
Diffstat (limited to 'c++11/driver.cxx')
-rw-r--r--c++11/driver.cxx207
1 files changed, 207 insertions, 0 deletions
diff --git a/c++11/driver.cxx b/c++11/driver.cxx
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+++ b/c++11/driver.cxx
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+// file : c++11/driver.cxx
+// copyright : not copyrighted - public domain
+
+#include <memory> // std::unique_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 odb::core;
+
+int
+main (int argc, char* argv[])
+{
+ try
+ {
+ unique_ptr<database> db (create_database (argc, argv));
+
+ // Create a few persistent objects.
+ //
+ {
+ pension_fund bf ("Bright Future");
+
+ // Simple Tech Ltd.
+ //
+ {
+ shared_ptr<employer> er (new employer ("Simple Tech Ltd"));
+
+ shared_ptr<employee> john (new employee ("John", "Doe", er));
+ shared_ptr<employee> jane (new employee ("Jane", "Doe", 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 ();
+
+ bf.members ().push_back (lazy_shared_ptr<employee> (*db, john));
+ }
+
+ // Complex Systems Inc.
+ //
+ {
+ shared_ptr<employer> er (new employer ("Complex Systems Inc"));
+
+ shared_ptr<employee> john (new employee ("John", "Smith", er));
+ shared_ptr<employee> jane (new employee ("Jane", "Smith", 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 ();
+
+ bf.members ().push_back (lazy_shared_ptr<employee> (*db, jane));
+ }
+
+ transaction t (db->begin ());
+ db->persist (bf);
+ t.commit ();
+ }
+
+ // Load the Bright Future pension fund and print its members.
+ //
+ {
+ session s;
+ transaction t (db->begin ());
+
+ unique_ptr<pension_fund> bf (db->load<pension_fund> ("Bright Future"));
+
+ for (auto i (bf->members ().begin ()); i != bf->members ().end (); ++i)
+ {
+ lazy_shared_ptr<employee>& p (*i);
+ p.load ();
+
+ cout << p->first () << ' ' << p->last () << ", " <<
+ p->employer ()->name () << endl;
+ }
+
+ // Alternative implementation using range-based for-loop.
+ //
+ /*
+ for (lazy_shared_ptr<employee>& p: bf->members ())
+ {
+ p.load ();
+ cout << p->first () << ' ' << p->last () << ", " <<
+ p->employer ()->name () << endl;
+ }
+ */
+
+ cout << endl;
+ }
+
+ // Load Simple Tech Ltd and print its employees.
+ //
+ {
+ session s;
+ transaction t (db->begin ());
+
+ shared_ptr<employer> st (db->load<employer> ("Simple Tech Ltd"));
+
+ for (auto i (st->employees ().begin ());
+ i != st->employees ().end ();
+ ++i)
+ {
+ lazy_weak_ptr<employee>& lwp (*i);
+ shared_ptr<employee> p (lwp.load ()); // Load and lock.
+
+ cout << p->first () << ' ' << p->last () << endl
+ << " employer: " << p->employer ()->name () << endl;
+
+ for (auto j (p->emails ().begin ()); j != p->emails ().end (); ++j)
+ {
+ cout << " email: " << *j << endl;
+ }
+
+ cout << endl;
+ }
+
+ // Alternative implementation using range-based for-loop.
+ //
+ /*
+ for (lazy_weak_ptr<employee>& lwp: st->employees ())
+ {
+ shared_ptr<employee> p (lwp.load ()); // Load and lock.
+
+ cout << p->first () << ' ' << p->last () << endl
+ << " employer: " << p->employer ()->name () << endl;
+
+ for (const string& e: p->emails ())
+ cout << " email: " << e << endl;
+
+ cout << endl;
+ }
+ */
+
+ t.commit ();
+ }
+
+
+ // Search for Complex Systems Inc employees with the John first name.
+ //
+ {
+ typedef odb::query<employee> query;
+ typedef odb::result<employee> result;
+
+ session s;
+ transaction t (db->begin ());
+
+ result r (db->query<employee> (
+ query::employer->name == "Complex Systems Inc" &&
+ query::first == "John"));
+
+ for (auto i (r.begin ()); i != r.end (); ++i)
+ cout << i->first () << ' ' << i->last () << endl;
+
+ // Alternative implementation using range-based for-loop.
+ //
+ /*
+ for (const employee& e: r)
+ cout << e.first () << ' ' << e.last () << endl;
+ */
+
+ t.commit ();
+ }
+ }
+ catch (const odb::exception& e)
+ {
+ cerr << e.what () << endl;
+ return 1;
+ }
+}