Add support for unidirectional object relationships

New test: common/relationship.

7 files changed, 41 insertions, 12 deletions

diff --git a/odb/mysql/connection.cxx b/odb/mysql/connection.cxx
index 0b38d35..d87e578 100644
--- a/odb/mysql/connection.cxx
+++ b/odb/mysql/connection.cxx
@@ -17,8 +17,9 @@ namespace odb
   namespace mysql
   {
     connection::
-    connection (database& db)
-        : handle_ (&mysql_),
+    connection (database_type& db)
+        : db_ (db),
+          handle_ (&mysql_),
           active_ (0),
           statement_cache_ (new statement_cache_type (*this))
     {
diff --git a/odb/mysql/connection.hxx b/odb/mysql/connection.hxx
index 7696909..ca1268a 100644
--- a/odb/mysql/connection.hxx
+++ b/odb/mysql/connection.hxx
@@ -15,6 +15,7 @@
 
 #include <odb/mysql/mysql.hxx>
 #include <odb/mysql/version.hxx>
+#include <odb/mysql/forward.hxx>
 
 #include <odb/details/shared-ptr.hxx>
 
@@ -31,12 +32,19 @@ namespace odb
     {
     public:
       typedef mysql::statement_cache statement_cache_type;
-
-      connection (database&);
+      typedef mysql::database database_type;
 
       virtual
       ~connection ();
 
+      connection (database_type&);
+
+      database_type&
+      database ()
+      {
+        return db_;
+      }
+
     public:
       MYSQL*
       handle ()
@@ -82,8 +90,11 @@ namespace odb
       free_stmt_handles ();
 
     private:
+      database_type& db_;
+
       MYSQL mysql_;
       MYSQL* handle_;
+
       statement* active_;
       std::auto_ptr<statement_cache_type> statement_cache_;
 
diff --git a/odb/mysql/container-statements.hxx b/odb/mysql/container-statements.hxx
index 322129f..4d23d5a 100644
--- a/odb/mysql/container-statements.hxx
+++ b/odb/mysql/container-statements.hxx
@@ -40,7 +40,15 @@ namespace odb
       typedef mysql::select_statement select_statement_type;
       typedef mysql::delete_statement delete_statement_type;
 
-      container_statements (connection&);
+      typedef mysql::connection connection_type;
+
+      container_statements (connection_type&);
+
+      connection_type&
+      connection ()
+      {
+        return conn_;
+      }
 
       // Functions.
       //
@@ -129,7 +137,7 @@ namespace odb
       container_statements& operator= (const container_statements&);
 
     private:
-      connection& conn_;
+      connection_type& conn_;
       functions_type functions_;
 
       cond_image_type cond_image_;
diff --git a/odb/mysql/container-statements.txx b/odb/mysql/container-statements.txx
index a4bb7e5..18d7831 100644
--- a/odb/mysql/container-statements.txx
+++ b/odb/mysql/container-statements.txx
@@ -15,7 +15,7 @@ namespace odb
 
     template <typename T>
     container_statements<T>::
-    container_statements (connection& conn)
+    container_statements (connection_type& conn)
         : conn_ (conn),
           functions_ (this,
                       &traits::insert_one,
diff --git a/odb/mysql/object-statements.hxx b/odb/mysql/object-statements.hxx
index a16af88..ad51d05 100644
--- a/odb/mysql/object-statements.hxx
+++ b/odb/mysql/object-statements.hxx
@@ -29,17 +29,25 @@ namespace odb
       public details::shared_base
     {
     public:
+      typedef mysql::connection connection_type;
+
+      connection_type&
+      connection ()
+      {
+        return conn_;
+      }
+
       virtual
       ~object_statements_base ();
 
     protected:
-      object_statements_base (connection& conn)
+      object_statements_base (connection_type& conn)
           : conn_ (conn)
       {
       }
 
     protected:
-      connection& conn_;
+      connection_type& conn_;
     };
 
     template <typename T>
@@ -59,7 +67,7 @@ namespace odb
       typedef mysql::update_statement update_statement_type;
       typedef mysql::delete_statement erase_statement_type;
 
-      object_statements (connection&);
+      object_statements (connection_type&);
 
       image_type&
       image ()
diff --git a/odb/mysql/object-statements.txx b/odb/mysql/object-statements.txx
index 8b2dad1..553447b 100644
--- a/odb/mysql/object-statements.txx
+++ b/odb/mysql/object-statements.txx
@@ -15,7 +15,7 @@ namespace odb
 
     template <typename T>
     object_statements<T>::
-    object_statements (connection& conn)
+    object_statements (connection_type& conn)
         : object_statements_base (conn),
           container_statement_cache_ (conn),
           image_binding_ (image_bind_, object_traits::column_count),
diff --git a/odb/mysql/result.txx b/odb/mysql/result.txx
index f06ee46..931ecf9 100644
--- a/odb/mysql/result.txx
+++ b/odb/mysql/result.txx
@@ -27,7 +27,8 @@ namespace odb
     current (T& x)
     {
       if (!this->end_)
-        traits::init (x, statements_.image ());
+        traits::init (
+          x, statements_.image (), statements_.connection ().database ());
     }
 
     template <typename T>