org.activiti.engine.impl.event.AbstractEventHandler Maven / Gradle / Ivy
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/* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.activiti.engine.impl.event;
import org.activiti.bpmn.model.*;
import org.activiti.engine.ActivitiException;
import org.activiti.engine.delegate.event.impl.ActivitiEventBuilder;
import org.activiti.engine.impl.context.Context;
import org.activiti.engine.impl.interceptor.CommandContext;
import org.activiti.engine.impl.persistence.entity.EventSubscriptionEntity;
import org.activiti.engine.impl.persistence.entity.ExecutionEntity;
import java.util.List;
import java.util.Map;
/**
*/
public abstract class AbstractEventHandler implements EventHandler {
public void handleEvent(EventSubscriptionEntity eventSubscription, Object payload, CommandContext commandContext) {
ExecutionEntity execution = eventSubscription.getExecution();
FlowNode currentFlowElement = (FlowNode) execution.getCurrentFlowElement();
if (currentFlowElement == null) {
throw new ActivitiException("Error while sending signal for event subscription '" + eventSubscription.getId() + "': " + "no activity associated with event subscription");
}
if (payload instanceof Map) {
@SuppressWarnings("unchecked")
Map processVariables = (Map) payload;
execution.setVariables(processVariables);
}
if (currentFlowElement instanceof BoundaryEvent || currentFlowElement instanceof EventSubProcess) {
try {
dispatchActivitiesCanceledIfNeeded(eventSubscription, execution, currentFlowElement, commandContext);
} catch (RuntimeException e) {
throw e;
} catch (Exception e) {
throw new ActivitiException("exception while sending signal for event subscription '" + eventSubscription + "':" + e.getMessage(), e);
}
}
Context.getAgenda().planTriggerExecutionOperation(execution);
}
protected void dispatchActivitiesCanceledIfNeeded(EventSubscriptionEntity eventSubscription, ExecutionEntity execution, FlowElement currentFlowElement, CommandContext commandContext) {
if (currentFlowElement instanceof BoundaryEvent) {
BoundaryEvent boundaryEvent = (BoundaryEvent) currentFlowElement;
if (boundaryEvent.isCancelActivity()) {
dispatchExecutionCancelled(eventSubscription, execution, commandContext);
}
}
}
protected void dispatchExecutionCancelled(EventSubscriptionEntity eventSubscription, ExecutionEntity execution, CommandContext commandContext) {
// subprocesses
for (ExecutionEntity subExecution : execution.getExecutions()) {
dispatchExecutionCancelled(eventSubscription, subExecution, commandContext);
}
// call activities
ExecutionEntity subProcessInstance = commandContext.getExecutionEntityManager().findSubProcessInstanceBySuperExecutionId(execution.getId());
if (subProcessInstance != null) {
dispatchExecutionCancelled(eventSubscription, subProcessInstance, commandContext);
}
// activity with message/signal boundary events
FlowElement flowElement = execution.getCurrentFlowElement();
if (flowElement instanceof BoundaryEvent) {
BoundaryEvent boundaryEvent = (BoundaryEvent) flowElement;
if (boundaryEvent.getAttachedToRef() != null) {
dispatchActivityCancelled(eventSubscription, execution, boundaryEvent.getAttachedToRef(), commandContext);
}
}
}
protected void dispatchActivityCancelled(EventSubscriptionEntity eventSubscription, ExecutionEntity boundaryEventExecution, FlowNode flowNode, CommandContext commandContext) {
// Scope
commandContext.getEventDispatcher().dispatchEvent(
ActivitiEventBuilder.createActivityCancelledEvent(flowNode.getId(), flowNode.getName(), boundaryEventExecution.getId(),
boundaryEventExecution.getProcessInstanceId(), boundaryEventExecution.getProcessDefinitionId(),
parseActivityType(flowNode), eventSubscription));
if (flowNode instanceof SubProcess) {
// The parent of the boundary event execution will be the one on which the boundary event is set
ExecutionEntity parentExecutionEntity = commandContext.getExecutionEntityManager().findById(boundaryEventExecution.getParentId());
if (parentExecutionEntity != null) {
dispatchActivityCancelledForChildExecution(eventSubscription, parentExecutionEntity, boundaryEventExecution, commandContext);
}
}
}
protected void dispatchActivityCancelledForChildExecution(EventSubscriptionEntity eventSubscription,
ExecutionEntity parentExecutionEntity, ExecutionEntity boundaryEventExecution, CommandContext commandContext) {
List executionEntities = commandContext.getExecutionEntityManager().findChildExecutionsByParentExecutionId(parentExecutionEntity.getId());
for (ExecutionEntity childExecution : executionEntities) {
if (!boundaryEventExecution.getId().equals(childExecution.getId())
&& childExecution.getCurrentFlowElement() != null
&& childExecution.getCurrentFlowElement() instanceof FlowNode) {
FlowNode flowNode = (FlowNode) childExecution.getCurrentFlowElement();
commandContext.getEventDispatcher().dispatchEvent(
ActivitiEventBuilder.createActivityCancelledEvent(flowNode.getId(), flowNode.getName(), childExecution.getId(),
childExecution.getProcessInstanceId(), childExecution.getProcessDefinitionId(),
parseActivityType(flowNode), eventSubscription));
if (childExecution.isScope()) {
dispatchActivityCancelledForChildExecution(eventSubscription, childExecution, boundaryEventExecution, commandContext);
}
}
}
}
protected String parseActivityType(FlowNode flowNode) {
String elementType = flowNode.getClass().getSimpleName();
elementType = elementType.substring(0, 1).toLowerCase() + elementType.substring(1);
return elementType;
}
}