Java tutorial
package org.rapidoid.jpa.impl; import org.hibernate.jpa.HibernatePersistenceProvider; import org.hibernate.jpa.boot.internal.PersistenceUnitInfoDescriptor; import org.hibernate.jpa.boot.spi.EntityManagerFactoryBuilder; import org.hibernate.jpa.boot.spi.PersistenceUnitDescriptor; import org.rapidoid.annotation.Authors; import org.rapidoid.annotation.Since; import org.rapidoid.scan.ClasspathUtil; import org.rapidoid.u.U; import javax.persistence.spi.PersistenceUnitInfo; import java.util.List; import java.util.Map; /* * #%L * rapidoid-jpa * %% * Copyright (C) 2014 - 2017 Nikolche Mihajlovski and contributors * %% * 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. * #L% */ @Authors("Nikolche Mihajlovski") @Since("5.1.0") public class CustomHibernatePersistenceProvider extends HibernatePersistenceProvider { private final List<String> names = U.list(); @Override protected EntityManagerFactoryBuilder getEntityManagerFactoryBuilder( PersistenceUnitDescriptor persistenceUnitDescriptor, Map integration, ClassLoader cl) { CustomDescriptor descriptor = new CustomDescriptor(persistenceUnitDescriptor, names); return super.getEntityManagerFactoryBuilder(descriptor, integration, ClasspathUtil.getDefaultClassLoader()); } protected EntityManagerFactoryBuilder getEntityManagerFactoryBuilderOrNull(String persistenceUnitName, Map properties, ClassLoader providedClassLoader) { PersistenceUnitInfo info = new RapidoidPersistenceUnitInfo(); PersistenceUnitInfoDescriptor persistenceUnit = new PersistenceUnitInfoDescriptor(info); final Map integration = wrap(properties); return getEntityManagerFactoryBuilder(persistenceUnit, integration, providedClassLoader); } public List<String> names() { return names; } }