Implement callback data re-basing support for LOB result streaming

This is used by the query machinery when a copy of the image has
to be made. In this case stream_result() needs to use data from
the copy of the image, and not from the image that was bound to
the bind array.

1 files changed, 7 insertions, 1 deletions

diff --git a/odb/oracle/view-result.txx b/odb/oracle/view-result.txx
index 9488e2b..ed9b411 100644
--- a/odb/oracle/view-result.txx
+++ b/odb/oracle/view-result.txx
@@ -52,7 +52,13 @@ namespace odb
                          use_copy_ ? *image_copy_ : statements_.image (),
                          db);
 
-      statement_->stream_result ();
+      // If we are using a copy, make sure the callback information for
+      // LOB data also comes from the copy.
+      //
+      statement_->stream_result (
+        use_copy_ ? &statements_.image () : 0,
+        use_copy_ ? image_copy_ : 0);
+
       view_traits::callback (db, view, callback_event::post_load);
     }