Index: src/libchcore/ISerializerContainer.h
===================================================================
diff -u -N -r293e52b38d46653068006262172018a0f0d0a31c -r081055369d6b332ef1651877756657973b1b2d9c
--- src/libchcore/ISerializerContainer.h	(.../ISerializerContainer.h)	(revision 293e52b38d46653068006262172018a0f0d0a31c)
+++ src/libchcore/ISerializerContainer.h	(.../ISerializerContainer.h)	(revision 081055369d6b332ef1651877756657973b1b2d9c)
@@ -35,7 +35,7 @@
 	virtual ~ISerializerContainer();
 
 	// columns
-	virtual IColumnsDefinitionPtr GetColumnsDefinition() const = 0;
+	virtual IColumnsDefinition& GetColumnsDefinition() = 0;
 
 	// prepare data to be stored
 	virtual ISerializerRowDataPtr AddRow(size_t stRowID) = 0;