Test handling multi-member composite object id using virtual data member

2 files changed, 59 insertions, 1 deletions

diff --git a/common/virtual/driver.cxx b/common/virtual/driver.cxx
index 05acfcb..1083cab 100644
--- a/common/virtual/driver.cxx
+++ b/common/virtual/driver.cxx
@@ -119,6 +119,31 @@ main (int argc, char* argv[])
         t.commit ();
       }
     }
+
+    // Use virtual data members to implement multi-member composite object id.
+    //
+    {
+      using namespace test3;
+
+      person o;
+      o.first_ = "John";
+      o.last_ = "Doe";
+
+      name id;
+      {
+        transaction t (db->begin ());
+        id = db->persist (o);
+        t.commit ();
+      }
+
+      {
+        transaction t (db->begin ());
+        auto_ptr<person> p (db->load<person> (id));
+        t.commit ();
+
+        assert (o.first_ == p->first_ && o.last_ == p->last_);
+      }
+    }
   }
   catch (const odb::exception& e)
   {
diff --git a/common/virtual/test.hxx b/common/virtual/test.hxx
index 3c0b0f1..a6caf2c 100644
--- a/common/virtual/test.hxx
+++ b/common/virtual/test.hxx
@@ -22,7 +22,7 @@ namespace test1
 
     #pragma db transient
     std::string s;
-    #pragma db member(s_) virtual(std::string) access (s)
+    #pragma db member(s_) virtual(std::string) access(s)
 
     bool operator== (const comp& v) const
     {
@@ -136,4 +136,37 @@ namespace test2
   };
 }
 
+// Use virtual data members to implement multi-member composite object id.
+//
+#pragma db namespace table("t3_")
+namespace test3
+{
+  #pragma db value
+  struct name
+  {
+    name () {}
+    name (std::string const& f, std::string const& l)
+        : first (f), last(l) {}
+
+    std::string first;
+    std::string last;
+
+    bool operator< (const name& x) const
+    {
+      return first < x.first || (first == x.first && last < x.last);
+    }
+  };
+
+  #pragma db object transient
+  struct person
+  {
+    std::string first_;
+    std::string last_;
+
+    #pragma db member(name) virtual(name) id                       \
+               get(::test3::name (this.first_, this.last_))        \
+               set(this.first_ = (?).first; this.last_ = (?).last)
+  };
+}
+
 #endif // TEST_HXX