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Java EE 6 example source code file (StatelessSessionBean.java)
The Java EE 6 StatelessSessionBean.java source code/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright 2009 Sun Microsystems, Inc. All rights reserved. * * The contents of this file are subject to the terms of either the GNU * General Public License Version 2 only ("GPL") or the Common Development * and Distribution License("CDDL") (collectively, the "License"). You * may not use this file except in compliance with the License. You can obtain * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html * or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific * language governing permissions and limitations under the License. * * When distributing the software, include this License Header Notice in each * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt. * Sun designates this particular file as subject to the "Classpath" exception * as provided by Sun in the GPL Version 2 section of the License file that * accompanied this code. If applicable, add the following below the License * Header, with the fields enclosed by brackets [] replaced by your own * identifying information: "Portions Copyrighted [year] * [name of copyright owner]" * * Contributor(s): * * If you wish your version of this file to be governed by only the CDDL or * only the GPL Version 2, indicate your decision by adding "[Contributor] * elects to include this software in this distribution under the [CDDL or GPL * Version 2] license." If you don't indicate a single choice of license, a * recipient has the option to distribute your version of this file under * either the CDDL, the GPL Version 2 or to extend the choice of license to * its licensees as provided above. However, if you add GPL Version 2 code * and therefore, elected the GPL Version 2 license, then the option applies * only if the new code is made subject to such option by the copyright * holder. */ package enterprise.advancedmapping.ejb; import enterprise.advancedmapping.entity.*; import java.io.IOException; import javax.ejb.Stateless; import javax.persistence.*; import javax.servlet.ServletOutputStream; import java.util.List; import java.util.Map; @Stateless /** * Contains methods to create and query data */ public class StatelessSessionBean { @PersistenceContext private EntityManager em; public void createData(ServletOutputStream outputStream) { final int NO_OF_ITEMS = 10; //Create Items for(int i = 1 ; i <= NO_OF_ITEMS ; i++) { Item item = new Item(i, "ItemName" + i, i * 10); em.persist(item); } final int NO_OF_ORDERS = 1; for(int i = 1 ; i <= NO_OF_ORDERS ; i++) { createOrder(i); } } private void createOrder(int orderNumber) { Order o = new Order("customer" + orderNumber); for(int lineItemNumber = 1 ; lineItemNumber <= 3 ; lineItemNumber++) { LineItem li = new LineItem(lineItemNumber, o, lineItemNumber * orderNumber); o.addLineItem(em.find(Item.class, lineItemNumber), li); } em.persist(o); } public void queryData(ServletOutputStream outputStream) throws IOException { queryForOrderContainingItem("ItemName1", outputStream); queryDataForOrder(1, outputStream); } private void queryForOrderContainingItem(String itemName, ServletOutputStream outputStream) throws IOException { outputStream.println("\n\nQuerying for Order containing item : " + itemName); String query = "select o from Order o join o.lineItems li where KEY(li).name = ?1"; Query q = em.createQuery(query); q.setParameter(1, itemName); outputStream.println("Executing query..." + query); List<Order> orders = q.getResultList(); for (Order order : orders) { outputStream.println("Retrieved Order id is: " + order.getId()); } } private void queryDataForOrder(int orderId, ServletOutputStream outputStream) throws IOException { outputStream.println("\n\nQuerying for Map entries for Order Id : " + orderId); String query = "select ENTRY(li) from Order o join o.lineItems li where o.id = ?1"; Query q = em.createQuery(query); q.setParameter(1, orderId); outputStream.println("Executing query..." + query); List<Map.Entry Other Java EE 6 examples (source code examples)Here is a short list of links related to this Java EE 6 StatelessSessionBean.java source code file: |
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