org.fabric3.jpa.runtime.proxy.EntityManagerService Maven / Gradle / Ivy

Go to download
/*
 * Fabric3
 * Copyright (c) 2009-2015 Metaform Systems
 *
 * 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.
 * Portions originally based on Apache Tuscany 2007
 * licensed under the Apache 2.0 license.
 */
package org.fabric3.jpa.runtime.proxy;

import javax.persistence.EntityManager;
import javax.transaction.Transaction;

/**
 * Responsible for returning an EntityManager with a persitence context tied to an execution context.
 */
public interface EntityManagerService {

    /**
     * Returns the EntityManager associated with the given transaction.
     *
     * @param unitName    the persistence unit name
     * @param proxy       the proxy requesting the EntityManager
     * @param transaction the transaction
     * @return the EntityManager
     * @throws EntityManagerCreationException if an error creating the EntityManager is encountered
     */
    EntityManager getEntityManager(String unitName, HibernateProxy proxy, Transaction transaction) throws EntityManagerCreationException;

}