com.tangosol.util.fsm

Interface StateEntryAction<S extends Enum<S>>

Type Parameters:

S - the type of the state

public interface StateEntryAction<S extends Enum<S>>

A StateEntryAction encapsulates the actions to be performed by a FiniteStateMachine when a particular state is entered.

A StateEntryAction for a particular state will be executed when the FiniteStateMachine has been set (to the said state) or a Transition (to the said state) has successfully completed.

Since:

Coherence 12.2.1

Author:

Brian Oliver

Method Summary

Modifier and Type	Method and Description
Instruction	onEnterState(S exitingState, S enteringState, Event<S> event, ExecutionContext context) Performs the necessary actions when a FiniteStateMachine enters a particular state.

Method Detail

onEnterState

Instruction onEnterState(S exitingState,
                         S enteringState,
                         Event<S> event,
                         ExecutionContext context)

Performs the necessary actions when a FiniteStateMachine enters a particular state. Once finished, the returned Instruction is performed.

Parameters:

exitingState - the previous state of the FiniteStateMachine prior to the state change (may be null if there was no previous state)

enteringState - the new state of the FiniteStateMachine

event - the Event that triggered the action

context - the ExecutionContext for the action

Returns:

the Instruction to be performed by the FiniteStateMachine