2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=========================================================
21 package org.openecomp.mso.db;
23 import org.hibernate.cfg.Configuration;
24 import org.hibernate.SessionFactory;
25 import org.hibernate.service.ServiceRegistry;
26 import org.openecomp.mso.properties.MsoDatabaseException;
27 import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
30 import java.util.concurrent.ConcurrentHashMap;
32 public abstract class AbstractSessionFactoryManager {
34 protected static Map<String, SessionFactory> sessionFactories = new ConcurrentHashMap<String, SessionFactory>();
36 protected synchronized SessionFactory initializeSessionFactory(URL hibernateConfigFile)
37 throws MsoDatabaseException {
39 if (hibernateConfigFile != null) {
40 SessionFactory tempFactory = sessionFactories.get(hibernateConfigFile.getPath());
41 // Already initialized, skip
42 if (tempFactory != null) {
46 Configuration conf = new Configuration().configure(hibernateConfigFile);
47 ServiceRegistry sr = new StandardServiceRegistryBuilder().applySettings(conf.getProperties()).build();
48 tempFactory = conf.buildSessionFactory(sr);
49 if (tempFactory == null) {
50 throw new MsoDatabaseException(
51 "SessionFactory can't be initialized, method buildSessionFactory returned null !");
53 sessionFactories.put(hibernateConfigFile.getPath(), tempFactory);
56 throw new MsoDatabaseException(
57 "HibernateConfigFile provided is null, therefore Hibernate can't be initialized !");
59 } catch (Exception e) {
60 throw new MsoDatabaseException("Exception occurred during the SessionFactory Build", e);
64 public SessionFactory getSessionFactory() throws MsoDatabaseException {
65 URL hibernateConfigFile = getHibernateConfigFile();
66 SessionFactory factory = sessionFactories.get(hibernateConfigFile.getPath());
67 if (factory == null) {
68 factory = initializeSessionFactory(hibernateConfigFile);
73 protected abstract URL getHibernateConfigFile();