net.esper.adapter
Class AdapterStateManager

java.lang.Object
  net.esper.adapter.AdapterStateManager

public class AdapterStateManager
extends Object

A utility to manage the state transitions for an InputAdapter.

Constructor Summary

AdapterStateManager()

Method Summary

void	destroy() Transition into the DESTROYED state.
void	disallowStateTransitions() Disallow future state changes, and throw an IllegalStateTransitionException if they are attempted.
AdapterState	getState()
void	pause() Transition into the PAUSED state.
void	resume() Transition into the STARTED state (from the PAUSED state).
void	start() Transition into the STARTED state (from the OPENED state).
void	stop() Transition into the OPENED state.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

AdapterStateManager

public AdapterStateManager()

Method Detail

getState

public AdapterState getState()

Returns:

the state

start

public void start()
           throws IllegalStateTransitionException

Transition into the STARTED state (from the OPENED state).

Throws:

IllegalStateTransitionException - if the transition is not allowed

stop

public void stop()
          throws IllegalStateTransitionException

Transition into the OPENED state.

Throws:

IllegalStateTransitionException - if the transition isn't allowed

pause

public void pause()
           throws IllegalStateTransitionException

Transition into the PAUSED state.

Throws:

IllegalStateTransitionException - if the transition isn't allowed

resume

public void resume()
            throws IllegalStateTransitionException

Transition into the STARTED state (from the PAUSED state).

Throws:

IllegalStateTransitionException - if the state transition is not allowed

destroy

public void destroy()
             throws IllegalStateTransitionException

Transition into the DESTROYED state.

Throws:

IllegalStateTransitionException - if the transition isn't allowed

disallowStateTransitions

public void disallowStateTransitions()

Disallow future state changes, and throw an IllegalStateTransitionException if they are attempted.