001/* 002 * (C) Copyright 2006-2008 Nuxeo SAS (http://nuxeo.com/) and contributors. 003 * 004 * All rights reserved. This program and the accompanying materials 005 * are made available under the terms of the GNU Lesser General Public License 006 * (LGPL) version 2.1 which accompanies this distribution, and is available at 007 * http://www.gnu.org/licenses/lgpl.html 008 * 009 * This library is distributed in the hope that it will be useful, 010 * but WITHOUT ANY WARRANTY; without even the implied warranty of 011 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 012 * Lesser General Public License for more details. 013 * 014 * Contributors: 015 * "Stephane Lacoin (aka matic) <slacoin@nuxeo.org>" 016 */ 017package org.nuxeo.ecm.core.persistence; 018 019import java.lang.reflect.Field; 020import java.util.HashMap; 021import java.util.Map; 022import java.util.Properties; 023 024import org.apache.commons.logging.Log; 025import org.apache.commons.logging.LogFactory; 026import org.hibernate.dialect.Oracle10gDialect; 027import org.hibernate.dialect.resolver.BasicDialectResolver; 028import org.hibernate.dialect.resolver.DialectFactory; 029import org.hibernate.dialect.resolver.DialectResolverSet; 030import org.nuxeo.runtime.api.Framework; 031import org.nuxeo.runtime.model.ComponentContext; 032import org.nuxeo.runtime.model.ComponentInstance; 033import org.nuxeo.runtime.model.ComponentName; 034import org.nuxeo.runtime.model.DefaultComponent; 035 036/** 037 * @author "Stephane Lacoin (aka matic) <slacoin@nuxeo.org>" 038 */ 039public class PersistenceComponent extends DefaultComponent implements HibernateConfigurator, PersistenceProviderFactory { 040 041 private static final Log log = LogFactory.getLog(PersistenceComponent.class); 042 043 protected final Map<String, HibernateConfiguration> registry = new HashMap<String, HibernateConfiguration>(); 044 045 { 046 // do this statically once, as we're patching a static variable 047 registerOracle12DialectResolver(); 048 } 049 050 /** 051 * Registers with Hibernate a dialect resolver to recognize Oracle 12. 052 * 053 * @since 7.2 054 */ 055 // We can't easily use DialectFactory's Environment.DIALECT_RESOLVERS because we would have 056 // to set it before Hibernate's classloading which we can't control. 057 protected static void registerOracle12DialectResolver() { 058 try { 059 Field f = DialectFactory.class.getDeclaredField("DIALECT_RESOLVERS"); 060 f.setAccessible(true); 061 DialectResolverSet resolvers = (DialectResolverSet) f.get(null); 062 resolvers.addResolverAtFirst(new BasicDialectResolver("Oracle", 12, Oracle10gDialect.class)); 063 } catch (ReflectiveOperationException | SecurityException e) { 064 log.error("Cannot patch Hibernate to support Oracle 12", e); 065 } 066 } 067 068 @Override 069 public int getApplicationStartedOrder() { 070 return 50; // even before repository init 071 } 072 073 @Override 074 public void applicationStarted(ComponentContext context) { 075 /* 076 * Initialize all the persistence units synchronously at startup, otherwise init may end up being called during 077 * the first asynchronous event, which means hibernate init may happen in parallel with the main Nuxeo startup 078 * thread which may be doing the hibernate init for someone else (JBPM for instance). 079 */ 080 for (String name : registry.keySet()) { 081 PersistenceProvider pp = newProvider(name); 082 pp.openPersistenceUnit(); // creates tables etc. 083 pp.closePersistenceUnit(); 084 } 085 } 086 087 @Override 088 public void registerContribution(Object contribution, String extensionPoint, ComponentInstance contributor) { 089 if ("hibernate".equals(extensionPoint)) { 090 registerHibernateContribution((HibernateConfiguration) contribution, contributor.getName()); 091 } 092 } 093 094 protected void registerHibernateContribution(HibernateConfiguration contribution, ComponentName contributorName) { 095 if (contribution.name == null) { 096 throw new PersistenceError(contributorName + " should set the 'name' attribute of hibernate configurations"); 097 } 098 if (contribution.hibernateProperties != null) { 099 doPatchForTests(contribution.hibernateProperties); 100 } 101 if (!registry.containsKey(contribution.name)) { 102 registry.put(contribution.name, contribution); 103 } else { 104 registry.get(contribution.name).merge(contribution); 105 } 106 } 107 108 protected void doPatchForTests(Properties hibernateProperties) { 109 String url = hibernateProperties.getProperty("hibernate.connection.url"); 110 if (url != null) { 111 url = Framework.expandVars(url); 112 hibernateProperties.put("hibernate.connection.url", url); 113 } 114 } 115 116 @Override 117 public PersistenceProvider newProvider(String name) { 118 EntityManagerFactoryProvider emfProvider = registry.get(name); 119 if (emfProvider == null) { 120 throw new PersistenceError("no hibernate configuration identified by '" + name + "' is available"); 121 } 122 return new PersistenceProvider(emfProvider); 123 } 124 125 @Override 126 public HibernateConfiguration getHibernateConfiguration(String name) { 127 HibernateConfiguration config = registry.get(name); 128 if (config == null) { 129 throw new PersistenceError("no hibernate configuration identified by '" + name + "' is available"); 130 } 131 return config; 132 } 133 134}