org.apache.lens.api.scheduler

Interface StateTransitioner<STATE extends Enum<STATE> & StateTransitioner<STATE,EVENT>,EVENT extends Enum<EVENT>>

All Known Implementing Classes:

SchedulerJobInstanceState, SchedulerJobState

public interface StateTransitioner<STATE extends Enum<STATE> & StateTransitioner<STATE,EVENT>,EVENT extends Enum<EVENT>>

Interface to be implemented by a class that handles state transitions.

Method Summary

Methods

Modifier and Type	Method and Description
STATE	nextTransition(EVENT event)

Method Detail

nextTransition

STATE nextTransition(EVENT event)
                                                                         throws InvalidStateTransitionException

Parameters:

event -

Returns:

The state that the machine enters into as a result of the event.

Throws:

InvalidStateTransitionException