/*
* JBoss, Home of Professional Open Source.
* Copyright 2013, Red Hat, Inc., and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.wildfly.clustering.ejb.infinispan.group;
import java.io.IOException;
import java.util.Map;
import java.util.Set;
import org.wildfly.clustering.ee.Mutator;
import org.wildfly.clustering.ee.Remover;
import org.wildfly.clustering.ejb.PassivationListener;
import org.wildfly.clustering.ejb.infinispan.BeanGroup;
import org.wildfly.clustering.ejb.infinispan.BeanGroupEntry;
import org.wildfly.clustering.ejb.infinispan.logging.InfinispanEjbLogger;
import org.wildfly.clustering.marshalling.jboss.MarshallingContext;
/**
* A {@link org.wildfly.clustering.ejb.infinispan.BeanGroup} implementation backed by an infinispan cache.
*
* @author Paul Ferraro
*
* @param <I> the bean identifier type
* @param <T> the bean type
*/
public class InfinispanBeanGroup<I, T> implements BeanGroup<I, T> {
private final I id;
private final BeanGroupEntry<I, T> entry;
private final MarshallingContext context;
private final Mutator mutator;
private final Remover<I> remover;
public InfinispanBeanGroup(I id, BeanGroupEntry<I, T> entry, MarshallingContext context, Mutator mutator, Remover<I> remover) {
this.id = id;
this.entry = entry;
this.context = context;
this.mutator = mutator;
this.remover = remover;
}
@Override
public I getId() {
return this.id;
}
private Map<I, T> beans() {
try {
return this.entry.getBeans().get(this.context);
} catch (IOException | ClassNotFoundException e) {
throw InfinispanEjbLogger.ROOT_LOGGER.deserializationFailure(e, this.id);
}
}
@Override
public Set<I> getBeans() {
return this.beans().keySet();
}
@Override
public T getBean(I id, PassivationListener<T> listener) {
T bean = this.beans().get(id);
if (bean != null) {
int usage = this.entry.incrementUsage(id);
if ((usage == 0) && (listener != null)) {
listener.postActivate(bean);
}
}
return bean;
}
@Override
public T removeBean(I id) {
return this.beans().remove(id);
}
@Override
public void addBean(I id, T bean) {
this.beans().put(id, bean);
this.entry.incrementUsage(id);
}
@Override
public boolean releaseBean(I id, PassivationListener<T> listener) {
int usage = this.entry.decrementUsage(id);
boolean released = usage == 0;
if (released) {
this.prePassivate(id, listener);
}
return released;
}
@Override
public boolean isCloseable() {
return this.entry.totalUsage() == 0;
}
@Override
public void close() {
if (!this.beans().isEmpty()) {
this.mutator.mutate();
} else {
this.remover.remove(this.id);
}
}
@Override
public void prePassivate(I id, PassivationListener<T> listener) {
if (listener != null) {
T bean = this.beans().get(id);
if (bean != null) {
listener.prePassivate(bean);
}
}
}
@Override
public void postActivate(I id, PassivationListener<T> listener) {
if (listener != null) {
T bean = this.beans().get(id);
if (bean != null) {
listener.postActivate(bean);
}
}
}
@Override
public boolean equals(Object object) {
if (!(object instanceof BeanGroup)) return false;
@SuppressWarnings("unchecked")
BeanGroup<I, T> group = (BeanGroup<I, T>) object;
return this.id.equals(group.getId());
}
@Override
public int hashCode() {
return this.id.hashCode();
}
@Override
public String toString() {
return this.id.toString();
}
}