org.camunda.bpm.engine.impl.migration.instance.parser.EventSubscriptionInstanceHandler Maven / Gradle / Ivy
/*
* Copyright Camunda Services GmbH and/or licensed to Camunda Services GmbH
* under one or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information regarding copyright
* ownership. Camunda licenses this file to you under the Apache License,
* Version 2.0; 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.camunda.bpm.engine.impl.migration.instance.parser;
import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.camunda.bpm.engine.impl.bpmn.parser.EventSubscriptionDeclaration;
import org.camunda.bpm.engine.impl.event.EventType;
import org.camunda.bpm.engine.impl.migration.instance.MigratingActivityInstance;
import org.camunda.bpm.engine.impl.migration.instance.MigratingEventSubscriptionInstance;
import org.camunda.bpm.engine.impl.persistence.entity.EventSubscriptionEntity;
import org.camunda.bpm.engine.impl.pvm.process.ActivityImpl;
import org.camunda.bpm.engine.impl.pvm.process.ScopeImpl;
import org.camunda.bpm.engine.migration.MigrationInstruction;
/**
* @author Thorben Lindhauer
*
*/
public class EventSubscriptionInstanceHandler implements MigratingDependentInstanceParseHandler> {
public static final Set SUPPORTED_EVENT_TYPES = new HashSet(Arrays.asList(EventType.MESSAGE.name(), EventType.SIGNAL.name(), EventType.CONDITONAL.name()));
@Override
public void handle(MigratingInstanceParseContext parseContext, MigratingActivityInstance owningInstance, List elements) {
Map targetDeclarations = getDeclarationsByTriggeringActivity(owningInstance.getTargetScope());
for (EventSubscriptionEntity eventSubscription : elements) {
if (!getSupportedEventTypes().contains(eventSubscription.getEventType())) {
// ignore unsupported event subscriptions
continue;
}
MigrationInstruction migrationInstruction = parseContext.findSingleMigrationInstruction(eventSubscription.getActivityId());
ActivityImpl targetActivity = parseContext.getTargetActivity(migrationInstruction);
if (targetActivity != null && owningInstance.migratesTo(targetActivity.getEventScope())) {
// the event subscription is migrated
EventSubscriptionDeclaration targetDeclaration = targetDeclarations.remove(targetActivity.getId());
owningInstance.addMigratingDependentInstance(
new MigratingEventSubscriptionInstance(eventSubscription, targetActivity, migrationInstruction.isUpdateEventTrigger(), targetDeclaration));
}
else {
// the event subscription will be removed
owningInstance.addRemovingDependentInstance(new MigratingEventSubscriptionInstance(eventSubscription));
}
parseContext.consume(eventSubscription);
}
if (owningInstance.migrates()) {
addEmergingEventSubscriptions(owningInstance, targetDeclarations);
}
}
protected Set getSupportedEventTypes() {
return SUPPORTED_EVENT_TYPES;
}
protected Map getDeclarationsByTriggeringActivity(ScopeImpl eventScope) {
Map declarations = EventSubscriptionDeclaration.getDeclarationsForScope(eventScope);
return new HashMap(declarations);
}
protected void addEmergingEventSubscriptions(MigratingActivityInstance owningInstance, Map targetDeclarations) {
for (String key : targetDeclarations.keySet()) {
// the event subscription will be created
EventSubscriptionDeclaration declaration = targetDeclarations.get(key);
if (!declaration.isStartEvent()) {
owningInstance.addEmergingDependentInstance(new MigratingEventSubscriptionInstance(declaration));
}
}
}
}