Package org.camunda.bpm.engine.impl.bpmn.behavior

Class ExclusiveGatewayActivityBehavior

java.lang.Object

org.camunda.bpm.engine.impl.bpmn.behavior.FlowNodeActivityBehavior

org.camunda.bpm.engine.impl.bpmn.behavior.GatewayActivityBehavior

org.camunda.bpm.engine.impl.bpmn.behavior.ExclusiveGatewayActivityBehavior

All Implemented Interfaces:

CoreActivityBehavior<ActivityExecution>, ActivityBehavior, SignallableActivityBehavior

public class ExclusiveGatewayActivityBehavior
extends GatewayActivityBehavior

implementation of the Exclusive Gateway/XOR gateway/exclusive data-based gateway as defined in the BPMN specification.

Author:

Joram Barrez

Field Summary

Fields

Modifier and Type	Field	Description
protected static BpmnBehaviorLogger	LOG

Fields inherited from class org.camunda.bpm.engine.impl.bpmn.behavior.FlowNodeActivityBehavior

bpmnActivityBehavior

Constructor Summary

Constructors

Constructor	Description
ExclusiveGatewayActivityBehavior()

Method Summary

Modifier and Type	Method	Description
void	doLeave(ActivityExecution execution)	The default behaviour of BPMN, taking every outgoing sequence flow (where the condition evaluates to true), is not valid for an exclusive gateway.

Methods inherited from class org.camunda.bpm.engine.impl.bpmn.behavior.GatewayActivityBehavior

lockConcurrentRoot

Methods inherited from class org.camunda.bpm.engine.impl.bpmn.behavior.FlowNodeActivityBehavior

execute, leave, leaveIgnoreConditions, signal

Methods inherited from class java.lang.Object

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

Field Details

LOG

protected static BpmnBehaviorLogger LOG

Constructor Details

ExclusiveGatewayActivityBehavior

public ExclusiveGatewayActivityBehavior()

Method Details

doLeave

public void doLeave(ActivityExecution execution)

The default behaviour of BPMN, taking every outgoing sequence flow (where the condition evaluates to true), is not valid for an exclusive gateway. Hence, this behaviour is overriden and replaced by the correct behavior: selecting the first sequence flow which condition evaluates to true (or which hasn't got a condition) and leaving the activity through that sequence flow. If no sequence flow is selected (ie all conditions evaluate to false), then the default sequence flow is taken (if defined).

Overrides:

doLeave in class FlowNodeActivityBehavior