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/*
* Copyright 2002-2015 the original author or authors.
*
* 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.orm.hibernate5;
import org.hibernate.FlushMode;
import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.core.Ordered;
import org.springframework.dao.DataAccessException;
import org.springframework.transaction.support.TransactionSynchronization;
import org.springframework.transaction.support.TransactionSynchronizationManager;
/**
* Callback for resource cleanup at the end of a Spring-managed transaction
* for a pre-bound Hibernate Session.
*
* @author Juergen Hoeller
* @since 4.2
*/
public class SpringSessionSynchronization implements TransactionSynchronization, Ordered {
private final SessionHolder sessionHolder;
private final SessionFactory sessionFactory;
private final boolean newSession;
private boolean holderActive = true;
public SpringSessionSynchronization(SessionHolder sessionHolder, SessionFactory sessionFactory) {
this(sessionHolder, sessionFactory, false);
}
public SpringSessionSynchronization(SessionHolder sessionHolder, SessionFactory sessionFactory, boolean newSession) {
this.sessionHolder = sessionHolder;
this.sessionFactory = sessionFactory;
this.newSession = newSession;
}
private Session getCurrentSession() {
return this.sessionHolder.getSession();
}
@Override
public int getOrder() {
return SessionFactoryUtils.SESSION_SYNCHRONIZATION_ORDER;
}
@Override
public void suspend() {
if (this.holderActive) {
TransactionSynchronizationManager.unbindResource(this.sessionFactory);
// Eagerly disconnect the Session here, to make release mode "on_close" work on JBoss.
getCurrentSession().disconnect();
}
}
@Override
public void resume() {
if (this.holderActive) {
TransactionSynchronizationManager.bindResource(this.sessionFactory, this.sessionHolder);
}
}
@Override
public void flush() {
try {
SessionFactoryUtils.logger.debug("Flushing Hibernate Session on explicit request");
getCurrentSession().flush();
}
catch (HibernateException ex) {
throw SessionFactoryUtils.convertHibernateAccessException(ex);
}
}
@Override
public void beforeCommit(boolean readOnly) throws DataAccessException {
if (!readOnly) {
Session session = getCurrentSession();
// Read-write transaction -> flush the Hibernate Session.
// Further check: only flush when not FlushMode.MANUAL.
if (!session.getFlushMode().equals(FlushMode.MANUAL)) {
try {
SessionFactoryUtils.logger.debug("Flushing Hibernate Session on transaction synchronization");
session.flush();
}
catch (HibernateException ex) {
throw SessionFactoryUtils.convertHibernateAccessException(ex);
}
}
}
}
@Override
public void beforeCompletion() {
try {
Session session = this.sessionHolder.getSession();
if (this.sessionHolder.getPreviousFlushMode() != null) {
// In case of pre-bound Session, restore previous flush mode.
session.setFlushMode(this.sessionHolder.getPreviousFlushMode());
}
// Eagerly disconnect the Session here, to make release mode "on_close" work nicely.
session.disconnect();
}
finally {
// Unbind at this point if it's a new Session...
if (this.newSession) {
TransactionSynchronizationManager.unbindResource(this.sessionFactory);
this.holderActive = false;
}
}
}
@Override
public void afterCommit() {
}
@Override
public void afterCompletion(int status) {
try {
if (status != STATUS_COMMITTED) {
// Clear all pending inserts/updates/deletes in the Session.
// Necessary for pre-bound Sessions, to avoid inconsistent state.
this.sessionHolder.getSession().clear();
}
}
finally {
this.sessionHolder.setSynchronizedWithTransaction(false);
// Call close() at this point if it's a new Session...
if (this.newSession) {
SessionFactoryUtils.closeSession(this.sessionHolder.getSession());
}
}
}
}
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