[gnome-db] inverse of gda_server_operation_op_type_to_string

[Andrea Zagli <azagli libero it>]

as the subject: what's the inverse function of  
gda_server_operation_op_type_to_string? to get the  
GdaServerOperationType from the string (for example  
"GdaServerOperationType gda_server_operation_string_to_op_type (const  
gchar *type)")

thanks in advance