org.apache.mina.statemachine

Class StateMachine

java.lang.Object

org.apache.mina.statemachine.StateMachine

public class StateMachine
extends Object

Represents a complete state machine. Contains a collection of State objects connected by Transitions. Normally you wouldn't create instances of this class directly but rather use the State annotation to define your states and then let StateMachineFactory create a StateMachine for you.

Author:

Apache MINA Project

Constructor Summary

Constructors

Constructor and Description
StateMachine(Collection<State> states, String startStateId) Creates a new instance using the specified States and start state.
StateMachine(State[] states, String startStateId) Creates a new instance using the specified States and start state.

Method Summary

Methods

Modifier and Type	Method and Description
State	getState(String id) Returns the State with the specified id.
Collection<State>	getStates()
void	handle(Event event) Processes the specified Event through this StateMachine.

Methods inherited from class java.lang.Object

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

Constructor Detail

StateMachine

public StateMachine(State[] states,
            String startStateId)

Creates a new instance using the specified States and start state.

Parameters:

states - the States.

startStateId - the id of the start State.

StateMachine

public StateMachine(Collection<State> states,
            String startStateId)

Creates a new instance using the specified States and start state.

Parameters:

states - the States.

startStateId - the id of the start State.

Method Detail

getState

public State getState(String id)
               throws NoSuchStateException

Returns the State with the specified id.

Parameters:

id - the id of the State to return.

Returns:

the State

Throws:

NoSuchStateException - if no matching State could be found.

getStates

public Collection<State> getStates()

Returns:

an unmodifiable Collection of all States used by this StateMachine.

handle

public void handle(Event event)

Processes the specified Event through this StateMachine. Normally you wouldn't call this directly but rather use StateMachineProxyBuilder to create a proxy for an interface of your choice. Any method calls on the proxy will be translated into Event objects and then fed to the StateMachine by the proxy using this method.

Parameters:

event - the Event to be handled.