/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.isis.core.metamodel.facets.collections.collection.modify;
import java.util.Collection;
import org.apache.isis.applib.services.eventbus.AbstractDomainEvent;
import org.apache.isis.applib.services.eventbus.CollectionDomainEvent;
import org.apache.isis.core.metamodel.adapter.ObjectAdapter;
import org.apache.isis.core.metamodel.consent.InteractionInitiatedBy;
import org.apache.isis.core.metamodel.facetapi.Facet;
import org.apache.isis.core.metamodel.facetapi.FacetHolder;
import org.apache.isis.core.metamodel.facets.DomainEventHelper;
import org.apache.isis.core.metamodel.facets.SingleValueFacetAbstract;
import org.apache.isis.core.metamodel.facets.collections.modify.CollectionRemoveFromFacet;
import org.apache.isis.core.metamodel.facets.propcoll.accessor.PropertyOrCollectionAccessorFacet;
import org.apache.isis.core.metamodel.services.ServicesInjector;
public abstract class CollectionRemoveFromFacetForDomainEventFromAbstract
extends SingleValueFacetAbstract<Class<? extends CollectionDomainEvent<?,?>>>
implements CollectionRemoveFromFacet {
public static Class<? extends Facet> type() {
return CollectionRemoveFromFacet.class;
}
private final PropertyOrCollectionAccessorFacet getterFacet;
private final CollectionRemoveFromFacet collectionRemoveFromFacet;
private final CollectionDomainEventFacetAbstract collectionDomainEventFacet;
private final DomainEventHelper domainEventHelper;
public CollectionRemoveFromFacetForDomainEventFromAbstract(
final Class<? extends CollectionDomainEvent<?, ?>> eventType,
final PropertyOrCollectionAccessorFacet getterFacet,
final CollectionRemoveFromFacet collectionRemoveFromFacet,
final CollectionDomainEventFacetAbstract collectionDomainEventFacet,
final ServicesInjector servicesInjector,
final FacetHolder holder) {
super(type(), eventType, holder);
this.getterFacet = getterFacet;
this.collectionRemoveFromFacet = collectionRemoveFromFacet;
this.collectionDomainEventFacet = collectionDomainEventFacet;
this.domainEventHelper = new DomainEventHelper(servicesInjector);
}
@Override
public void remove(
final ObjectAdapter targetAdapter,
final ObjectAdapter referencedObjectAdapter,
final InteractionInitiatedBy interactionInitiatedBy) {
if (this.collectionRemoveFromFacet == null) {
return;
}
final Object referencedObject = ObjectAdapter.Util.unwrap(referencedObjectAdapter);
// get hold of underlying collection
// passing null through for authenticationSession/deploymentType means to avoid any visibility filtering.
final Object collection = getterFacet.getProperty(targetAdapter, interactionInitiatedBy);
// don't post event if the collections does not contain object
if (!((Collection<?>) collection).contains(referencedObject)) {
return;
}
// contains the element, so
// execute the remove wrapped between the executing and executed events ...
// ... post the executing event
final CollectionDomainEvent<?, ?> event =
domainEventHelper.postEventForCollection(
AbstractDomainEvent.Phase.EXECUTING,
eventType(), null,
getIdentified(), targetAdapter,
CollectionDomainEvent.Of.REMOVE_FROM,
referencedObject);
// ... perform remove
collectionRemoveFromFacet.remove(targetAdapter, referencedObjectAdapter, interactionInitiatedBy);
// ... and post the executed event
domainEventHelper.postEventForCollection(
AbstractDomainEvent.Phase.EXECUTED,
value(), verify(event),
getIdentified(), targetAdapter,
CollectionDomainEvent.Of.REMOVE_FROM,
referencedObject);
}
private Class<? extends CollectionDomainEvent<?, ?>> eventType() {
return value();
}
/**
* Optional hook to allow the facet implementation for the deprecated {@link org.apache.isis.applib.annotation.PostsCollectionRemovedFromEvent} annotation
* to discard the event if of a different type.
*/
protected CollectionDomainEvent<?, ?> verify(CollectionDomainEvent<?, ?> event) {
return event;
}
}