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

Class ExternalTaskActivityBehavior

java.lang.Object

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

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

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

All Implemented Interfaces:

CoreActivityBehavior<ActivityExecution>, ActivityBehavior, MigrationObserverBehavior, SignallableActivityBehavior

public class ExternalTaskActivityBehavior
extends AbstractBpmnActivityBehavior
implements MigrationObserverBehavior

Implements behavior of external task activities, i.e. all service-task-like activities that have camunda:type="external".

Author:

Thorben Lindhauer, Christopher Zell

Field Summary

Fields

Modifier and Type	Field and Description
protected ParameterValueProvider	priorityValueProvider
protected ParameterValueProvider	topicNameValueProvider

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

LOG

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

bpmnActivityBehavior

Constructor Summary

Constructors

Constructor and Description
ExternalTaskActivityBehavior(ParameterValueProvider topicName, ParameterValueProvider paramValueProvider)

Method Summary

Modifier and Type	Method and Description
void	execute(ActivityExecution execution) Default behaviour: just leave the activity with no extra functionality.
ParameterValueProvider	getPriorityValueProvider()
void	migrateScope(ActivityExecution scopeExecution) Implement to perform activity-specific migration behavior that is not covered by the regular migration procedure.
void	onParseMigratingInstance(MigratingInstanceParseContext parseContext, MigratingActivityInstance migratingInstance) Callback to implement behavior specific parsing (e.g.
void	propagateBpmnError(BpmnError error, ActivityExecution execution) It's used to propagate the bpmn error from an external task.
void	signal(ActivityExecution execution, String signalName, Object signalData)

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

createCompensateEventSubscription, doLeave, executeWithErrorPropagation, isCompensationEventSubprocess, signalCompensationDone

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

leave, leaveIgnoreConditions

Methods inherited from class java.lang.Object

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

Field Detail

topicNameValueProvider

protected ParameterValueProvider topicNameValueProvider

priorityValueProvider

protected ParameterValueProvider priorityValueProvider

Constructor Detail

ExternalTaskActivityBehavior

public ExternalTaskActivityBehavior(ParameterValueProvider topicName,
                                    ParameterValueProvider paramValueProvider)

Method Detail

execute

public void execute(ActivityExecution execution)
             throws Exception

Description copied from class: FlowNodeActivityBehavior

Default behaviour: just leave the activity with no extra functionality.

Specified by:

execute in interface CoreActivityBehavior<ActivityExecution>

Specified by:

execute in interface ActivityBehavior

Overrides:

execute in class FlowNodeActivityBehavior

Throws:

Exception

signal

public void signal(ActivityExecution execution,
                   String signalName,
                   Object signalData)
            throws Exception

Specified by:

signal in interface SignallableActivityBehavior

Overrides:

signal in class AbstractBpmnActivityBehavior

Throws:

Exception

getPriorityValueProvider

public ParameterValueProvider getPriorityValueProvider()

propagateBpmnError

public void propagateBpmnError(BpmnError error,
                               ActivityExecution execution)
                        throws Exception

It's used to propagate the bpmn error from an external task.

Parameters:

error - the error which should be propagated

execution - the current activity execution

Throws:

Exception - throws an exception if no handler was found

migrateScope

public void migrateScope(ActivityExecution scopeExecution)

Description copied from interface: MigrationObserverBehavior

Implement to perform activity-specific migration behavior that is not covered by the regular migration procedure. Called after the scope execution and any ancestor executions have been migrated to their target activities and process definition.

Specified by:

migrateScope in interface MigrationObserverBehavior

onParseMigratingInstance

public void onParseMigratingInstance(MigratingInstanceParseContext parseContext,
                                     MigratingActivityInstance migratingInstance)

Description copied from interface: MigrationObserverBehavior

Callback to implement behavior specific parsing (e.g. adding additional dependent entities).

Specified by:

onParseMigratingInstance in interface MigrationObserverBehavior