| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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.jclouds.jdbc.repository; |
| |
| import com.google.inject.Provider; |
| |
| import javax.persistence.EntityManager; |
| import java.io.Serializable; |
| import java.lang.reflect.ParameterizedType; |
| |
| public abstract class GenericRepository<T, PK extends Serializable> { |
| |
| protected final Class<T> entityClass; |
| protected final Provider<EntityManager> entityManager; |
| |
| @SuppressWarnings("unchecked") |
| protected GenericRepository(Provider<EntityManager> entityManager) { |
| this.entityManager = entityManager; |
| this.entityClass = (Class<T>) ((ParameterizedType) getClass().getGenericSuperclass()).getActualTypeArguments()[0]; |
| } |
| |
| public T create(T entity) { |
| entityManager.get().persist(entity); |
| return entity; |
| } |
| |
| public T find(PK id) { |
| return entityManager.get().find(entityClass, id); |
| } |
| |
| public T save(T entity) { |
| return entityManager.get().merge(entity); |
| } |
| |
| public void delete(T entity) { |
| entityManager.get().remove(entity); |
| } |
| |
| } |