jbe/bsw@0: --[[--
jbe/bsw@0: trace.sql{
jbe@295:   command        = command,         -- executed SQL command as string
jbe@295:   execution_time = execution_time,  -- execution time of the statement in seconds
jbe@295:   error_position = error_position   -- optional position in bytes where an error occurred
jbe/bsw@0: }
jbe/bsw@0: 
jbe/bsw@0: This command can be used to log SQL command execution. It is currently not invoked automatically.
jbe/bsw@0: 
jbe/bsw@0: --]]--
jbe/bsw@0: 
jbe/bsw@0: -- TODO: automatic use of this function?
jbe/bsw@0: 
jbe/bsw@0: function trace.sql(args)
jbe@41:   if not trace._disabled then
jbe@41:     local command = args.command
jbe@295:     local execution_time = args.execution_time
jbe@41:     local error_position = args.error_position
jbe@41:     if type(command) ~= "string" then
jbe@41:       error("No command string passed to trace.sql{...}.")
jbe@41:     end
jbe@295:     if type(execution_time) ~= "number" then
jbe@295:       error("No execution time number passed to trace.sql{...}.")
jbe@295:     end
jbe@41:     if error_position and type(error_position) ~= "number" then
jbe@41:       error("error_position must be a number.")
jbe@41:     end
jbe@41:     trace._new_entry{
jbe@297:       type           = "sql",
jbe@297:       command        = command,
jbe@297:       execution_time = execution_time,
jbe@41:       error_position = error_position
jbe@41:     }
jbe@302:     for i, entry in ipairs(trace._stack) do
jbe@302:       entry.db_time = entry.db_time + execution_time
jbe@302:     end
jbe/bsw@0:   end
jbe/bsw@0: end