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diff --git a/common/view/olv/driver.cxx b/common/view/olv/driver.cxx
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+// file      : common/view/olv/driver.cxx
+// copyright : Copyright (c) 2009-2013 Code Synthesis Tools CC
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+// Test object loading views.
+//
+
+#include <memory>   // std::auto_ptr
+#include <cassert>
+#include <iostream>
+#include <typeinfo>
+
+#include <odb/session.hxx>
+#include <odb/database.hxx>
+#include <odb/transaction.hxx>
+
+#include <common/common.hxx>
+
+#include "test.hxx"
+#include "test-odb.hxx"
+
+using namespace std;
+using namespace odb::core;
+
+int
+main (int argc, char* argv[])
+{
+  try
+  {
+    auto_ptr<database> db (create_database (argc, argv));
+
+    // Test basic object loading functionality.
+    //
+    {
+      using namespace test1;
+
+      {
+        object1 o1a (1, 123);
+        object2 o2 (1, "abc");
+
+        transaction t (db->begin ());
+        db->persist (o1a);
+        db->persist (o2);
+        t.commit ();
+      }
+
+      {
+        typedef odb::query<view1> query;
+
+        transaction t (db->begin ());
+        view1 v (db->query_value<view1> (query::object1::n == 123));
+        assert (v.o2->s == "abc");
+        t.commit ();
+      }
+
+      {
+        transaction t (db->begin ());
+        view2 v (db->query_value<view2> ());
+        assert (v.o1->n == 123 && v.o2->s == "abc");
+        t.commit ();
+      }
+
+      {
+        transaction t (db->begin ());
+        view3 v (db->query_value<view3> ());
+        assert (v.o1->n == 123 && v.o2->s == "abc");
+        t.commit ();
+      }
+
+      {
+        transaction t (db->begin ());
+        view4 v (db->query_value<view4> ());
+        assert (v.s == "abc" && v.o2->s == "abc" && v.id == 1 &&
+                v.o1->n == 123 && v.n == 123);
+        t.commit ();
+      }
+
+      {
+        transaction t (db->begin ());
+        view4 v (db->query_value<view4> ());
+        assert (v.s == "abc" && v.o2->s == "abc" && v.id == 1 &&
+                v.o1->n == 123 && v.n == 123);
+        t.commit ();
+      }
+
+      {
+        typedef odb::query<view5> query;
+
+        object1 o1b (123, 1);
+
+        transaction t (db->begin ());
+        db->persist (o1b);
+        view5 v (db->query_value<view5> (query::o1b::n == 1));
+        assert (v.o1a->n == 123 && v.o2->s == "abc" && v.o1b->n == 1);
+        t.commit ();
+      }
+    }
+
+    // Test loading of object pointers inside objects.
+    //
+    {
+      using namespace test2;
+
+      shared_ptr<object1> o1 (new object1 (123));
+      shared_ptr<object2> o2 (new object2 ("abc", o1));
+
+      {
+
+        transaction t (db->begin ());
+        db->persist (o1);
+        db->persist (o2);
+        t.commit ();
+      }
+
+      {
+        transaction t (db->begin ());
+        view1 v (db->query_value<view1> ());
+        assert (v.o2->s == "abc" && v.o2->o1->n == 123);
+        t.commit ();
+      }
+
+      {
+        // Check session interaction.
+        //
+        transaction t (db->begin ());
+        session s;
+        shared_ptr<object2> o2a (db->load<object2> (o2->id));
+        view1 v (db->query_value<view1> ());
+        assert (v.o2 == o2a);
+        t.commit ();
+      }
+
+      {
+        transaction t (db->begin ());
+        session s;
+        view2 v (db->query_value<view2> ());
+        assert (v.o1->n == 123 && v.o2->s == "abc" && v.o2->o1 == v.o1);
+        t.commit ();
+      }
+
+      shared_ptr<object3> o3 (new object3 (o2));
+
+      {
+        transaction t (db->begin ());
+        db->persist (o3);
+        t.commit ();
+      }
+
+      {
+        transaction t (db->begin ());
+        session s;
+        view3 v (db->query_value<view3> ());
+        assert (v.o1->n == 123 && v.o3->o2->s == "abc" &&
+                v.o3->o2->o1 == v.o1);
+        t.commit ();
+      }
+
+      shared_ptr<object1> o1b (new object1 (234));
+      shared_ptr<object2> o2b (new object2 ("bcd", o1b));
+      shared_ptr<object4> o4 (new object4);
+      o4->o2.push_back (o2);
+      o4->o2.push_back (o2b);
+
+      {
+        transaction t (db->begin ());
+        db->persist (o1b);
+        db->persist (o2b);
+        db->persist (o4);
+        t.commit ();
+      }
+
+      {
+        transaction t (db->begin ());
+        view4 v (db->query_value<view4> ());
+        assert (v.o4->o2[0]->s == "abc" && v.o4->o2[0]->o1->n == 123 &&
+                v.o4->o2[1]->s == "bcd" && v.o4->o2[1]->o1->n == 234);
+        t.commit ();
+      }
+
+      {
+        typedef odb::query<view5> query;
+        typedef odb::result<view5> result;
+
+        transaction t (db->begin ());
+        session s;
+        result r (db->query<view5> ("ORDER BY" + query::object1::id));
+        result::iterator i (r.begin ());
+
+        assert (i != r.end ());
+        {
+          view5 const& v (*i);
+
+          assert (v.o4->o2[0]->s == "abc" && v.o4->o2[0]->o1->n == 123 &&
+                  v.o4->o2[1]->s == "bcd" && v.o4->o2[1]->o1->n == 234 &&
+                  v.o4->o2[0]->o1 == v.o1);
+        }
+        assert (++i != r.end ());
+        {
+          view5 const& v (*i);
+
+          assert (v.o4->o2[0]->s == "abc" && v.o4->o2[0]->o1->n == 123 &&
+                  v.o4->o2[1]->s == "bcd" && v.o4->o2[1]->o1->n == 234 &&
+                  v.o4->o2[1]->o1 == v.o1);
+        }
+        assert (++i == r.end ());
+        t.commit ();
+      }
+
+      shared_ptr<object5> o5 (new object5 (o1b, o2));
+
+      {
+        transaction t (db->begin ());
+        db->persist (o5);
+        t.commit ();
+      }
+
+      {
+        transaction t (db->begin ());
+        view6 v (db->query_value<view6> ());
+        assert (v.o1a->n == 123 && v.o1b->n == 234);
+        t.commit ();
+      }
+    }
+
+    // Test JOINs for pointed-to objects, existing and automatically added.
+    //
+    {
+      using namespace test3;
+
+      shared_ptr<object1> o1 (new object1 (123));
+      shared_ptr<object2> o2 (new object2 ("abc"));
+
+      o1->o2 = o2;
+      o2->o1 = o1;
+
+      {
+
+        transaction t (db->begin ());
+        db->persist (o1);
+        db->persist (o2);
+        t.commit ();
+      }
+
+      {
+        transaction t (db->begin ());
+        view1a v (db->query_value<view1a> ());
+        assert (v.o1->n == 123 && v.o1->o2.object_id () == o2->id);
+        t.commit ();
+      }
+
+      {
+        transaction t (db->begin ());
+        view1b v (db->query_value<view1b> ());
+        assert (v.o1->n == 123 && v.o1->o2.object_id () == o2->id);
+        t.commit ();
+      }
+
+      // Container case.
+      //
+
+      shared_ptr<object3> o3 (new object3 (123));
+      shared_ptr<object4> o4 (new object4 ("abc"));
+
+      o3->o4 = o4;
+      o4->o3.push_back (o3);
+
+      {
+
+        transaction t (db->begin ());
+        db->persist (o3);
+        db->persist (o4);
+        t.commit ();
+      }
+
+      {
+        transaction t (db->begin ());
+        view2a v (db->query_value<view2a> ());
+        assert (v.o3->n == 123 && v.o3->o4.object_id () == o4->id);
+        t.commit ();
+      }
+
+      {
+        transaction t (db->begin ());
+        view2b v (db->query_value<view2b> ());
+        assert (v.o3->n == 123 && v.o3->o4.object_id () == o4->id);
+        t.commit ();
+      }
+    }
+
+    // Test by-value load.
+    //
+    {
+      using namespace test4;
+
+      {
+        object1 o1 (1, 123);
+        object2 o2 (1, "abc", &o1);
+
+        transaction t (db->begin ());
+        db->persist (o1);
+        db->persist (o2);
+        t.commit ();
+      }
+
+      {
+        transaction t (db->begin ());
+        view1 v (db->query_value<view1> ());
+        assert (v.o1.n == 123);
+        t.commit ();
+      }
+
+      {
+        transaction t (db->begin ());
+        view1a v (db->query_value<view1a> ());
+        assert (!v.o1_null && v.o1.n == 123);
+        t.commit ();
+      }
+
+      {
+        transaction t (db->begin ());
+        view1b v (db->query_value<view1b> ());
+        assert (/*v.o1_p == &v.o1 && */ v.o1.n == 123); // Copy ctor.
+        t.commit ();
+      }
+
+      {
+        typedef odb::result<view1c> result;
+
+        transaction t (db->begin ());
+        result r (db->query<view1c> ());
+        result::iterator i (r.begin ());
+        assert (i != r.end ());
+
+        object1 o1;
+        view1c v (o1);
+        i.load (v);
+
+        assert (v.o1_p == &o1 && o1.n == 123);
+
+        assert (++i == r.end ());
+        t.commit ();
+      }
+
+      {
+        transaction t (db->begin ());
+        session s;
+        view2 v (db->query_value<view2> ());
+        assert (v.o1.n == 123 && v.o2.s == "abc" && v.o2.o1 == &v.o1);
+        t.commit ();
+      }
+
+      object1 o1b (2, 234);
+
+      {
+        transaction t (db->begin ());
+        db->persist (o1b);
+        t.commit ();
+      }
+
+      {
+        typedef odb::query<view2a> query;
+
+        transaction t (db->begin ());
+        session s;
+        view2a v (db->query_value<view2a> (query::object1::id == 2));
+        assert (v.o1.n == 234 && v.o2_null);
+        t.commit ();
+      }
+
+      shared_ptr<object3> o3 (new object3 (1, 123));
+
+      {
+        transaction t (db->begin ());
+        db->persist (o3);
+        t.commit ();
+      }
+
+      {
+        transaction t (db->begin ());
+        {
+          view3 v (db->query_value<view3> ());
+          assert (v.o3_p == &v.o3 && v.o3.n == 123); // Load into value.
+        }
+        session s; // Load into cache.
+        shared_ptr<object3> o3a (db->load<object3> (o3->id));
+        {
+          view3 v (db->query_value<view3> ());
+          assert (v.o3_p == o3a.get ()); // Load from cache.
+        }
+        t.commit ();
+      }
+    }
+
+    // Test NULL object pointers.
+    //
+    {
+      using namespace test5;
+
+      shared_ptr<object1> o1a (new object1 (123));
+      shared_ptr<object1> o1b (new object1 (234));
+      shared_ptr<object2> o2 (new object2 ("abc", o1a));
+
+      {
+        transaction t (db->begin ());
+        db->persist (o1a);
+        db->persist (o1b);
+        db->persist (o2);
+        t.commit ();
+      }
+
+      {
+        typedef odb::query<view1> query;
+        typedef odb::result<view1> result;
+
+        transaction t (db->begin ());
+        session s;
+        result r (db->query<view1> ("ORDER BY" + query::object1::id));
+        result::iterator i (r.begin ());
+
+        assert (i != r.end ());
+        {
+          view1 const& v (*i);
+          assert (v.o1->n == 123 && v.o2->s == "abc" && v.o2->o1 == v.o1);
+        }
+        assert (++i != r.end ());
+        {
+          view1 const& v (*i);
+          assert (v.o1->n == 234 && !v.o2);
+        }
+        assert (++i == r.end ());
+        t.commit ();
+      }
+
+      shared_ptr<object3> o3a (new object3 (make_pair (1, 1), 123));
+      shared_ptr<object3> o3b (new object3 (make_pair (2, 2), 234));
+      shared_ptr<object4> o4 (new object4 ("abc", o3a));
+
+      {
+        transaction t (db->begin ());
+        db->persist (o3a);
+        db->persist (o3b);
+        db->persist (o4);
+        t.commit ();
+      }
+
+      {
+        typedef odb::query<view2> query;
+        typedef odb::result<view2> result;
+
+        transaction t (db->begin ());
+        session s;
+        result r (db->query<view2> ("ORDER BY" + query::object3::n));
+        result::iterator i (r.begin ());
+
+        assert (i != r.end ());
+        {
+          view2 const& v (*i);
+          assert (v.o3->n == 123 && v.o4->s == "abc" && v.o4->o3 == v.o3);
+        }
+        assert (++i != r.end ());
+        {
+          view2 const& v (*i);
+          assert (v.o3->n == 234 && !v.o4);
+        }
+        assert (++i == r.end ());
+        t.commit ();
+      }
+    }
+
+    // Test interaction with sections.
+    //
+    {
+      using namespace test6;
+
+      shared_ptr<object1> o1 (new object1 (123));
+      shared_ptr<object2> o2 (new object2 ("abc", o1));
+
+      {
+        transaction t (db->begin ());
+        db->persist (o1);
+        db->persist (o2);
+        t.commit ();
+      }
+
+      {
+        transaction t (db->begin ());
+        view1 v (db->query_value<view1> ());
+        assert (v.o1->n == 123 && v.o2->s == "abc" &&
+                !v.o2->r.loaded () && !v.o2->o1);
+        t.commit ();
+      }
+    }
+
+    // Test explicit conversion to smart pointer member.
+    //
+    {
+      using namespace test7;
+
+      object1 o1 (123);
+      object2 o2 ("abc", &o1);
+
+      {
+        transaction t (db->begin ());
+        db->persist (o1);
+        db->persist (o2);
+        t.commit ();
+      }
+
+      {
+        transaction t (db->begin ());
+        session s;
+        view1 v (db->query_value<view1> ());
+        assert (v.o1->n == 123 && v.o2->s == "abc" && v.o2->o1 == v.o1.get ());
+        t.commit ();
+      }
+    }
+
+    // Test loading objects without id.
+    //
+    {
+      using namespace test8;
+
+      object1 o1 (123);
+      object2 o2 ("abc", &o1);
+
+      {
+        transaction t (db->begin ());
+        db->persist (o1);
+        db->persist (o2);
+        t.commit ();
+      }
+
+      {
+        transaction t (db->begin ());
+        session s;
+        view1 v (db->query_value<view1> ());
+        assert (v.o1->n == 123 && v.o2->s == "abc" && v.o2->o1 == v.o1.get ());
+        t.commit ();
+      }
+    }
+
+    // Test loading polymorphic objects.
+    //
+    {
+      using namespace test9;
+
+      root r (1);
+      base b (2, "a");
+      derived d (3, "b", true);
+
+      {
+        transaction t (db->begin ());
+        db->persist (r);
+        db->persist (b);
+        db->persist (d);
+        t.commit ();
+      }
+
+      {
+        transaction t (db->begin ());
+
+        // Load via root.
+        //
+        {
+          view1r r (db->query_value<view1r> (query<view1r>::n == 1));
+          assert (r.n == 1 && r.o->n == 1 && typeid (*r.o) == typeid (root));
+        }
+
+        {
+          view1r r (db->query_value<view1r> (query<view1r>::n == 2));
+          assert (r.n == 2 && r.o->n == 2 && typeid (*r.o) == typeid (base));
+          base& b (dynamic_cast<base&> (*r.o));
+          assert (b.s == "a");
+        }
+
+        {
+          view1r r (db->query_value<view1r> (query<view1r>::n == 3));
+          assert (r.n == 3 && r.o->n == 3 && typeid (*r.o) == typeid (derived));
+          derived& d (dynamic_cast<derived&> (*r.o));
+          assert (d.s == "b" && d.b);
+        }
+
+        // Load via base.
+        //
+        {
+          view1b r (db->query_value<view1b> (query<view1b>::n == 2));
+          assert (r.s == "a" && r.n == 2 && r.o->n == 2 && b.s == "a");
+        }
+
+        {
+          view1b r (db->query_value<view1b> (query<view1b>::n == 3));
+          assert (r.s == "b" && r.n == 3 && r.o->n == 3 &&
+                  typeid (*r.o) == typeid (derived));
+          derived& d (dynamic_cast<derived&> (*r.o));
+          assert (d.s == "b" && d.b);
+        }
+
+        // Load via derived.
+        //
+        {
+          view1d r (db->query_value<view1d> ());
+          assert (r.s == "b" && r.n == 3 &&
+                  r.o->n == 3 && r.o->s == "b" && r.o->b);
+        }
+
+        t.commit ();
+      }
+    }
+  }
+  catch (const odb::exception& e)
+  {
+    cerr << e.what () << endl;
+    return 1;
+  }
+}