Package org.chenile.workflow.service.stmcmds

Class AbstractSTMTransitionAction<StateEntityType extends StateEntity,PayloadType>

java.lang.Object

org.chenile.workflow.service.stmcmds.AbstractSTMTransitionAction<StateEntityType,PayloadType>

Type Parameters:

StateEntityType - the sub-type of the state entity

PayloadType - the type of payload

All Implemented Interfaces:

STMTransitionAction<StateEntityType>

public abstract class AbstractSTMTransitionAction<StateEntityType extends StateEntity,PayloadType>
extends Object
implements STMTransitionAction<StateEntityType>

STMTransitionAction uses Object as a payload type. Hence it is impossible to infer the precise Payload type from the implementation of STMTransition Action. This class serves as a bridge for sub-classes to enforce a Paylaod Type. By extending this class, sub-classes declare the precise Payload Type that they expect.

Without this class. Payload type had to be declared in the STM configuration. The blue print for STM assumes that all STM Transition Actions extend this class.

Constructor Summary

Constructors

Constructor	Description
AbstractSTMTransitionAction()

Method Summary

Modifier and Type	Method	Description
final void	doTransition(StateEntityType stateEntity, Object transitionParam, State startState, String eventId, State endState, STMInternalTransitionInvoker<?> stm, Transition transition)
abstract void	transitionTo(StateEntityType stateEntity, PayloadType transitionParam, State startState, String eventId, State endState, STMInternalTransitionInvoker<?> stm, Transition transition)	Implement this method to start using your expected payload type.

Methods inherited from class java.lang.Object

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

Constructor Details

AbstractSTMTransitionAction

public AbstractSTMTransitionAction()

Method Details

doTransition

public final void doTransition(StateEntityType stateEntity,
 Object transitionParam,
 State startState,
 String eventId,
 State endState,
 STMInternalTransitionInvoker<?> stm,
 Transition transition)
                        throws Exception

Specified by:

doTransition in interface STMTransitionAction<StateEntityType extends StateEntity>

Throws:

Exception

transitionTo

public abstract void transitionTo(StateEntityType stateEntity,
 PayloadType transitionParam,
 State startState,
 String eventId,
 State endState,
 STMInternalTransitionInvoker<?> stm,
 Transition transition)
                           throws Exception

Implement this method to start using your expected payload type.

Parameters:

stateEntity - the state entity that has been passed to STM

transitionParam - The transition param with the correct payload type

startState - state at which the event occurred

eventId - the event that happened

endState - the end state

stm - this is for invoking other STMs

transition - the definition of the entire transition in the STM configuration

Throws:

Exception - if an exception occurs.