/** * Check the autoCommit and Transaction Isolation levels of the DataSource. * * <p>If autoCommit is true this could be a real problem. * * <p>If the Isolation level is not READ_COMMITED then optimistic concurrency checking may not * work as expected. */ private boolean checkDataSource(ServerConfig serverConfig) { if (serverConfig.getDataSource() == null) { if (serverConfig.getDataSourceConfig().isOffline()) { // this is ok - offline DDL generation etc return false; } throw new RuntimeException("DataSource not set?"); } Connection c = null; try { c = serverConfig.getDataSource().getConnection(); if (c.getAutoCommit()) { String m = "DataSource [" + serverConfig.getName() + "] has autoCommit defaulting to true!"; logger.warning(m); } return true; } catch (SQLException ex) { throw new PersistenceException(ex); } finally { if (c != null) { try { c.close(); } catch (SQLException ex) { logger.log(Level.SEVERE, null, ex); } } } }
/** Set the DataSource if it has not already been set. */ private void setDataSource(ServerConfig config) { if (config.getDataSource() == null) { DataSource ds = getDataSourceFromConfig(config); config.setDataSource(ds); } }
/** Create the implementation from the configuration. */ public SpiEbeanServer createServer(ServerConfig serverConfig) { synchronized (this) { setNamingConvention(serverConfig); BootupClasses bootupClasses = getBootupClasses(serverConfig); setDataSource(serverConfig); // check the autoCommit and Transaction Isolation boolean online = checkDataSource(serverConfig); // determine database platform (Oracle etc) setDatabasePlatform(serverConfig); if (serverConfig.getDbEncrypt() != null) { // use a configured DbEncrypt rather than the platform default serverConfig.getDatabasePlatform().setDbEncrypt(serverConfig.getDbEncrypt()); } DatabasePlatform dbPlatform = serverConfig.getDatabasePlatform(); PstmtBatch pstmtBatch = null; if (dbPlatform.getName().startsWith("oracle")) { PstmtDelegate pstmtDelegate = serverConfig.getPstmtDelegate(); if (pstmtDelegate == null) { // try to provide the pstmtDelegate = getOraclePstmtDelegate(serverConfig.getDataSource()); } if (pstmtDelegate != null) { // We can support JDBC batching with Oracle // via OraclePreparedStatement pstmtBatch = new OraclePstmtBatch(pstmtDelegate); } if (pstmtBatch == null) { // We can not support JDBC batching with Oracle logger.warning("Can not support JDBC batching with Oracle without a PstmtDelegate"); serverConfig.setPersistBatching(false); } } // inform the NamingConvention of the associated DatabasePlaform serverConfig.getNamingConvention().setDatabasePlatform(serverConfig.getDatabasePlatform()); ServerCacheManager cacheManager = getCacheManager(serverConfig); int uniqueServerId = serverId.incrementAndGet(); SpiBackgroundExecutor bgExecutor = createBackgroundExecutor(serverConfig, uniqueServerId); InternalConfiguration c = new InternalConfiguration( xmlConfig, clusterManager, cacheManager, bgExecutor, serverConfig, bootupClasses, pstmtBatch); DefaultServer server = new DefaultServer(c, cacheManager); cacheManager.init(server); MBeanServer mbeanServer; ArrayList<?> list = MBeanServerFactory.findMBeanServer(null); if (list.size() == 0) { // probably not running in a server mbeanServer = MBeanServerFactory.createMBeanServer(); } else { // use the first MBeanServer mbeanServer = (MBeanServer) list.get(0); } server.registerMBeans(mbeanServer, uniqueServerId); // generate and run DDL if required executeDDL(server, online); // initialise prior to registering with clusterManager server.initialise(); if (online) { if (clusterManager.isClustering()) { // register the server once it has been created clusterManager.registerServer(server); } // warm the cache in 30 seconds int delaySecs = GlobalProperties.getInt("ebean.cacheWarmingDelay", 30); long sleepMillis = 1000 * delaySecs; if (sleepMillis > 0) { Timer t = new Timer("EbeanCacheWarmer", true); t.schedule(new CacheWarmer(server), sleepMillis); } } // start any services after registering with clusterManager server.start(); return server; } }