Engine Middleware

Before each factory function invocation, parameters are passed through engine middleware which resolves event and drawDefinition from provided identifiers.

askEngine.getEvent({ drawId }); // derivation of event is handled by middleware

Tournament

Since the engine shared state can hold multiple tournamentRecords, passing tournamentId as a parameter ensures that functions are performed on the correct tournament.

const { participants } = askEngine.getParticipants({ tournamentId });

Passing tournamentId is unnecessary when there is only one tournament in state, or when setTournamentId(tournamentId) has been called.

import { askEngine, globalStat } from 'tods-competition-factory';

globalState.setTournamentId(tournamentId);

// - or -
askEngine.setTourmamentId(touramentId);

Disable middleware

To disable middleware, pass the parameter _middleware: false:

askEngine.getEvent({ drawId, _middleware: false }); // function invocation will fail