question: @ RequestMapping ( value = { "/" , "" } , method = RequestMethod . POST ) @ ResponseBody public RestWrapper update ( @ ModelAttribute ( "execstatus" ) @ Valid ExecStatus execStatus , BindingResult bindingResult , Principal principal ) { RestWrapper restWrapper = null ; if ( bindingResult . hasErrors ( ) ) { BindingResultError bindingResultError = new BindingResultError ( ) ; return bindingResultError . errorMessage ( bindingResult ) ; } try { com . wipro . ats . bdre . md . dao . jpa . ExecStatus jpaExecStatus = new com . wipro . ats . bdre . md . dao . jpa . ExecStatus ( ) ; jpaExecStatus . setExecStateId ( execStatus . getExecStateId ( ) ) ; jpaExecStatus . setDescription ( execStatus . getDescription ( ) ) ; execStatusDAO . update ( jpaExecStatus ) ; restWrapper = new RestWrapper ( execStatus , RestWrapper . OK ) ; LOGGER . info ( "Record with ID:" + execStatus . getExecStateId ( ) + " updated in ExecStatus by User:" + principal . getName ( ) + execStatus ) ; } catch ( MetadataException e ) { LOGGER . error ( e ) ; restWrapper = new RestWrapper ( e . getMessage ( ) , RestWrapper . ERROR ) ; } return restWrapper ; }
target:  This method calls proc UpdateExecStatus and updates the values passed. It also validates the values passed.