org.springframework.statemachine.guard

Interface Guard<S,E>

Type Parameters:

S - the type of state

E - the type of event

All Known Implementing Classes:

SpelExpressionGuard

public interface Guard<S,E>

Guards are typically considered as guard conditions which affect the behaviour of a state machine by enabling actions or transitions only when they evaluate to TRUE and disabling them when they evaluate to FALSE.

Author:

Janne Valkealahti

Method Summary

Modifier and Type	Method and Description
boolean	evaluate(StateContext<S,E> context) Evaluate a guard condition.

Method Detail

evaluate

boolean evaluate(StateContext<S,E> context)

Evaluate a guard condition.

Parameters:

context - the state context

Returns:

true, if guard evaluation is successful, false otherwise.