001/* 002 * (C) Copyright 2006-2008 Nuxeo SA (http://nuxeo.com/) and others. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 * 016 * Contributors: 017 * "Stephane Lacoin (aka matic) <slacoin@nuxeo.org>" 018 */ 019package org.nuxeo.ecm.core.persistence; 020 021import java.lang.reflect.Field; 022import java.util.HashMap; 023import java.util.Map; 024import java.util.Properties; 025 026import org.apache.commons.logging.Log; 027import org.apache.commons.logging.LogFactory; 028import org.hibernate.dialect.Oracle10gDialect; 029import org.hibernate.dialect.resolver.BasicDialectResolver; 030import org.hibernate.dialect.resolver.DialectFactory; 031import org.hibernate.dialect.resolver.DialectResolverSet; 032import org.nuxeo.runtime.api.Framework; 033import org.nuxeo.runtime.model.ComponentContext; 034import org.nuxeo.runtime.model.ComponentInstance; 035import org.nuxeo.runtime.model.ComponentName; 036import org.nuxeo.runtime.model.DefaultComponent; 037 038/** 039 * @author "Stephane Lacoin (aka matic) <slacoin@nuxeo.org>" 040 */ 041public class PersistenceComponent extends DefaultComponent implements HibernateConfigurator, PersistenceProviderFactory { 042 043 private static final Log log = LogFactory.getLog(PersistenceComponent.class); 044 045 protected final Map<String, HibernateConfiguration> registry = new HashMap<String, HibernateConfiguration>(); 046 047 { 048 // do this statically once, as we're patching a static variable 049 registerOracle12DialectResolver(); 050 } 051 052 /** 053 * Registers with Hibernate a dialect resolver to recognize Oracle 12. 054 * 055 * @since 7.2 056 */ 057 // We can't easily use DialectFactory's Environment.DIALECT_RESOLVERS because we would have 058 // to set it before Hibernate's classloading which we can't control. 059 protected static void registerOracle12DialectResolver() { 060 try { 061 Field f = DialectFactory.class.getDeclaredField("DIALECT_RESOLVERS"); 062 f.setAccessible(true); 063 DialectResolverSet resolvers = (DialectResolverSet) f.get(null); 064 resolvers.addResolverAtFirst(new BasicDialectResolver("Oracle", 12, Oracle10gDialect.class)); 065 } catch (ReflectiveOperationException | SecurityException e) { 066 log.error("Cannot patch Hibernate to support Oracle 12", e); 067 } 068 } 069 070 @Override 071 public int getApplicationStartedOrder() { 072 return 50; // even before repository init 073 } 074 075 @Override 076 public void applicationStarted(ComponentContext context) { 077 /* 078 * Initialize all the persistence units synchronously at startup, otherwise init may end up being called during 079 * the first asynchronous event, which means hibernate init may happen in parallel with the main Nuxeo startup 080 * thread which may be doing the hibernate init for someone else (JBPM for instance). 081 */ 082 for (String name : registry.keySet()) { 083 PersistenceProvider pp = newProvider(name); 084 pp.openPersistenceUnit(); // creates tables etc. 085 pp.closePersistenceUnit(); 086 } 087 } 088 089 @Override 090 public void registerContribution(Object contribution, String extensionPoint, ComponentInstance contributor) { 091 if ("hibernate".equals(extensionPoint)) { 092 registerHibernateContribution((HibernateConfiguration) contribution, contributor.getName()); 093 } 094 } 095 096 protected void registerHibernateContribution(HibernateConfiguration contribution, ComponentName contributorName) { 097 if (contribution.name == null) { 098 throw new PersistenceError(contributorName + " should set the 'name' attribute of hibernate configurations"); 099 } 100 if (contribution.hibernateProperties != null) { 101 doPatchForTests(contribution.hibernateProperties); 102 } 103 if (!registry.containsKey(contribution.name)) { 104 registry.put(contribution.name, contribution); 105 } else { 106 registry.get(contribution.name).merge(contribution); 107 } 108 } 109 110 protected void doPatchForTests(Properties hibernateProperties) { 111 String url = hibernateProperties.getProperty("hibernate.connection.url"); 112 if (url != null) { 113 url = Framework.expandVars(url); 114 hibernateProperties.put("hibernate.connection.url", url); 115 } 116 } 117 118 @Override 119 public PersistenceProvider newProvider(String name) { 120 EntityManagerFactoryProvider emfProvider = registry.get(name); 121 if (emfProvider == null) { 122 throw new PersistenceError("no hibernate configuration identified by '" + name + "' is available"); 123 } 124 return new PersistenceProvider(emfProvider); 125 } 126 127 @Override 128 public HibernateConfiguration getHibernateConfiguration(String name) { 129 HibernateConfiguration config = registry.get(name); 130 if (config == null) { 131 throw new PersistenceError("no hibernate configuration identified by '" + name + "' is available"); 132 } 133 return config; 134 } 135 136}