org.fabric3.jpa.runtime.emf.EntityManagerFactoryCache Maven / Gradle / Ivy
/*
* 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.emf;
import java.net.URI;
import javax.persistence.EntityManagerFactory;
import org.fabric3.jpa.api.JpaResolutionException;
/**
* A cache of EntityManagerFactory instances.
*/
public interface EntityManagerFactoryCache {
/**
* Returns the EntityManagerFactory for the given persistence unit name
*
* @param unitName the persistence unit name
* @return the EntityManagerFactory or null if one has not been created
*/
EntityManagerFactory get(String unitName);
/**
* Caches an EntityManagerFactory.
*
* @param uri the URI of the contribution the persistence unit is defined in
* @param unitName the persistence unit name
* @param factory the EntityManagerFactory to cache
* @throws JpaResolutionException if there is an error caching the EntityManagerFactory
*/
void put(URI uri, String unitName, EntityManagerFactory factory) throws JpaResolutionException;
}