/*
* Copyright 2011-2016 by the original author(s).
*
* 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.springframework.data.mongodb.core.mapping.event;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.ApplicationListener;
import org.springframework.core.GenericTypeResolver;
/**
* Base class to implement domain class specific {@link ApplicationListener}s.
*
* @author Jon Brisbin
* @author Oliver Gierke
* @author Martin Baumgartner
* @author Christoph Strobl
*/
public abstract class AbstractMongoEventListener<E> implements ApplicationListener<MongoMappingEvent<?>> {
private static final Logger LOG = LoggerFactory.getLogger(AbstractMongoEventListener.class);
private final Class<?> domainClass;
/**
* Creates a new {@link AbstractMongoEventListener}.
*/
public AbstractMongoEventListener() {
Class<?> typeArgument = GenericTypeResolver.resolveTypeArgument(this.getClass(), AbstractMongoEventListener.class);
this.domainClass = typeArgument == null ? Object.class : typeArgument;
}
/*
* (non-Javadoc)
* @see org.springframework.context.ApplicationListener#onApplicationEvent(org.springframework.context.ApplicationEvent)
*/
@SuppressWarnings({ "rawtypes", "unchecked" })
public void onApplicationEvent(MongoMappingEvent<?> event) {
if (event instanceof AfterLoadEvent) {
AfterLoadEvent<?> afterLoadEvent = (AfterLoadEvent<?>) event;
if (domainClass.isAssignableFrom(afterLoadEvent.getType())) {
onAfterLoad((AfterLoadEvent<E>) event);
}
return;
}
if (event instanceof AbstractDeleteEvent) {
Class<?> eventDomainType = ((AbstractDeleteEvent) event).getType();
if (eventDomainType != null && domainClass.isAssignableFrom(eventDomainType)) {
if (event instanceof BeforeDeleteEvent) {
onBeforeDelete((BeforeDeleteEvent<E>) event);
}
if (event instanceof AfterDeleteEvent) {
onAfterDelete((AfterDeleteEvent<E>) event);
}
}
return;
}
Object source = event.getSource();
// Check for matching domain type and invoke callbacks
if (source != null && !domainClass.isAssignableFrom(source.getClass())) {
return;
}
if (event instanceof BeforeConvertEvent) {
onBeforeConvert((BeforeConvertEvent<E>) event);
} else if (event instanceof BeforeSaveEvent) {
onBeforeSave((BeforeSaveEvent<E>) event);
} else if (event instanceof AfterSaveEvent) {
onAfterSave((AfterSaveEvent<E>) event);
} else if (event instanceof AfterConvertEvent) {
onAfterConvert((AfterConvertEvent<E>) event);
}
}
/**
* Captures {@link BeforeConvertEvent}.
*
* @param event never {@literal null}.
* @since 1.8
*/
public void onBeforeConvert(BeforeConvertEvent<E> event) {
if (LOG.isDebugEnabled()) {
LOG.debug("onBeforeConvert({})", event.getSource());
}
}
/**
* Captures {@link BeforeSaveEvent}.
*
* @param event will never be {@literal null}.
* @since 1.8
*/
public void onBeforeSave(BeforeSaveEvent<E> event) {
if (LOG.isDebugEnabled()) {
LOG.debug("onBeforeSave({}, {})", event.getSource(), event.getDocument());
}
}
/**
* Captures {@link AfterSaveEvent}.
*
* @param event will never be {@literal null}.
* @since 1.8
*/
public void onAfterSave(AfterSaveEvent<E> event) {
if (LOG.isDebugEnabled()) {
LOG.debug("onAfterSave({}, {})", event.getSource(), event.getDocument());
}
}
/**
* Captures {@link AfterLoadEvent}.
*
* @param event will never be {@literal null}.
* @since 1.8
*/
public void onAfterLoad(AfterLoadEvent<E> event) {
if (LOG.isDebugEnabled()) {
LOG.debug("onAfterLoad({})", event.getDocument());
}
}
/**
* Captures {@link AfterConvertEvent}.
*
* @param event will never be {@literal null}.
* @since 1.8
*/
public void onAfterConvert(AfterConvertEvent<E> event) {
if (LOG.isDebugEnabled()) {
LOG.debug("onAfterConvert({}, {})", event.getDocument(), event.getSource());
}
}
/**
* Captures {@link AfterDeleteEvent}.
*
* @param event will never be {@literal null}.
* @since 1.8
*/
public void onAfterDelete(AfterDeleteEvent<E> event) {
if (LOG.isDebugEnabled()) {
LOG.debug("onAfterDelete({})", event.getDocument());
}
}
/**
* Capture {@link BeforeDeleteEvent}.
*
* @param event will never be {@literal null}.
* @since 1.8
*/
public void onBeforeDelete(BeforeDeleteEvent<E> event) {
if (LOG.isDebugEnabled()) {
LOG.debug("onBeforeDelete({})", event.getDocument());
}
}
}