| /******************************************************************************* |
| * 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.ofbiz.entity.transaction; |
| |
| import java.sql.Connection; |
| import java.sql.SQLException; |
| import java.util.concurrent.atomic.AtomicReference; |
| |
| import javax.transaction.TransactionManager; |
| import javax.transaction.UserTransaction; |
| |
| import org.ofbiz.base.util.Debug; |
| import org.ofbiz.entity.GenericEntityException; |
| import org.ofbiz.entity.config.EntityConfigUtil; |
| import org.ofbiz.entity.config.model.Datasource; |
| import org.ofbiz.entity.datasource.GenericHelperInfo; |
| import org.ofbiz.entity.jdbc.CursorConnection; |
| |
| /** |
| * TransactionFactory - central source for JTA objects |
| */ |
| public class TransactionFactory { |
| |
| public static final String module = TransactionFactory.class.getName(); |
| private static final AtomicReference<TransactionFactoryInterface> txFactoryRef = new AtomicReference<TransactionFactoryInterface>(null); |
| |
| private static TransactionFactoryInterface createTransactionFactoryInterface() throws Exception { |
| String className = EntityConfigUtil.getTxFactoryClass(); |
| if (className == null) { |
| throw new IllegalStateException("Could not find transaction factory class name definition"); |
| } |
| ClassLoader loader = Thread.currentThread().getContextClassLoader(); |
| Class<?> tfClass = loader.loadClass(className); |
| return (TransactionFactoryInterface) tfClass.newInstance(); |
| } |
| |
| private static TransactionFactoryInterface getTransactionFactory() { |
| TransactionFactoryInterface instance = txFactoryRef.get(); |
| if (instance == null) { |
| try { |
| instance = createTransactionFactoryInterface(); |
| if (!txFactoryRef.compareAndSet(null, instance)) { |
| instance = txFactoryRef.get(); |
| } |
| } catch (Exception e) { |
| Debug.logError(e, "Exception thrown while creating TransactionFactoryInterface instance: ", module); |
| throw new IllegalStateException("Error loading TransactionFactory class: " + e); |
| } |
| } |
| return instance; |
| } |
| |
| public static TransactionManager getTransactionManager() { |
| return getTransactionFactory().getTransactionManager(); |
| } |
| |
| public static UserTransaction getUserTransaction() { |
| return getTransactionFactory().getUserTransaction(); |
| } |
| |
| public static String getTxMgrName() { |
| return getTransactionFactory().getTxMgrName(); |
| } |
| |
| public static Connection getConnection(GenericHelperInfo helperInfo) throws SQLException, GenericEntityException { |
| return getTransactionFactory().getConnection(helperInfo); |
| } |
| |
| public static void shutdown() { |
| getTransactionFactory().shutdown(); |
| } |
| |
| public static Connection getCursorConnection(GenericHelperInfo helperInfo, Connection con) { |
| Datasource datasourceInfo = EntityConfigUtil.getDatasource(helperInfo.getHelperBaseName()); |
| if (datasourceInfo == null) { |
| Debug.logWarning("Could not find configuration for " + helperInfo.getHelperBaseName() + " datasource.", module); |
| return con; |
| } else if (datasourceInfo.getUseProxyCursor()) { |
| try { |
| if (datasourceInfo.getResultFetchSize() > 1) |
| con = CursorConnection.newCursorConnection(con, datasourceInfo.getProxyCursorName(), datasourceInfo.getResultFetchSize()); |
| } catch (Exception ex) { |
| Debug.logWarning(ex, "Error creating the cursor connection proxy " + helperInfo.getHelperBaseName() + " datasource.", module); |
| } |
| } |
| return con; |
| } |
| } |