ee.telekom.workflow.graph.node.gateway

Class CancellingDiscriminator

java.lang.Object

ee.telekom.workflow.graph.node.AbstractNode

ee.telekom.workflow.graph.node.gateway.AbstractGateway

ee.telekom.workflow.graph.node.gateway.CancellingDiscriminator

All Implemented Interfaces:

Node

public class CancellingDiscriminator
extends AbstractGateway

Gateway, that implements the "cancelling discriminator" workflow pattern. That means, it continues the execution of the subsequent branch once the first thread of execution arrives and cancels all other threads of execution that are originating from the same fork.

The underlying token model restricts the usage of AndJoins to be in balanced pairs with AndFork or OrForks.

Constructor Summary

Constructors

Constructor and Description
CancellingDiscriminator(int id)
CancellingDiscriminator(int id, String name)

Method Summary

Modifier and Type	Method and Description
void	cancel(GraphEngine engine, Token token) Called when the GraphEngine cancels the execution of a Token, that is currently pointing to this node and is in a wait state.
void	execute(GraphEngine engine, Token token) Performs node specific logic.

Methods inherited from class ee.telekom.workflow.graph.node.gateway.AbstractGateway

store

Methods inherited from class ee.telekom.workflow.graph.node.AbstractNode

getId, getName, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

CancellingDiscriminator

public CancellingDiscriminator(int id)

CancellingDiscriminator

public CancellingDiscriminator(int id,
                               String name)

Method Detail

execute

public void execute(GraphEngine engine,
                    Token token)

Description copied from interface: Node

Performs node specific logic. Either from the execute method, or later from the outside, the GraphEngineFacade#complete(WorkItem) method must be called to continue executing the GraphInstance.

Parameters:

engine - the GraphEngine which is performing the execution

token - the Token which is currently executing in this node

cancel

public void cancel(GraphEngine engine,
                   Token token)

Description copied from interface: Node

Called when the GraphEngine cancels the execution of a Token, that is currently pointing to this node and is in a wait state.

Parameters:

engine - the GraphEngine which is performing the execution

token - the Token pointing to this node