From 33613a85afc4b1481367fbe92a17ee59c240250b Mon Sep 17 00:00:00 2001 From: Sven Eisenhauer Date: Fri, 10 Nov 2023 15:11:48 +0100 Subject: add new repo --- .../src/examples/shop/META-INF/application.xml | 21 ++ .../src/examples/shop/META-INF/ejb-jar.xml | 22 ++ .../src/examples/shop/META-INF/persistence.xml | 13 + .../src/examples/shop/META-INF/sun-ejb-jar.xml | 13 + .../src/examples/shop/WEB-INF/sun-web.xml | 5 + .../src/examples/shop/WEB-INF/web.xml | 38 +++ .../Gerald Examples/src/examples/shop/build.xml | 87 ++++++ .../src/examples/shop/client/PricerClient.java | 52 ++++ .../src/examples/shop/client/SetupClient.java | 58 ++++ .../src/examples/shop/impl/entity/Customer.java | 104 +++++++ .../src/examples/shop/impl/entity/LineItem.java | 132 +++++++++ .../src/examples/shop/impl/entity/Order.java | 183 ++++++++++++ .../src/examples/shop/impl/entity/Product.java | 93 ++++++ .../examples/shop/impl/mdb/OrderProcessorBean.java | 68 +++++ .../src/examples/shop/impl/session/CartBean.java | 320 +++++++++++++++++++++ .../examples/shop/impl/session/CatalogBean.java | 41 +++ .../src/examples/shop/impl/session/PricerBean.java | 138 +++++++++ .../shop/impl/session/UserManagerBean.java | 86 ++++++ .../src/examples/shop/logic/Cart.java | 81 ++++++ .../src/examples/shop/logic/Catalog.java | 31 ++ .../shop/logic/InvalidLoginNameException.java | 19 ++ .../shop/logic/InvalidPasswordException.java | 19 ++ .../src/examples/shop/logic/OrderException.java | 19 ++ .../src/examples/shop/logic/Pricer.java | 50 ++++ .../src/examples/shop/logic/PricerException.java | 19 ++ .../src/examples/shop/logic/UserManager.java | 38 +++ .../src/examples/shop/web/jsp/catalog.jsp | 44 +++ .../src/examples/shop/web/jsp/clearQuote.jsp | 15 + .../src/examples/shop/web/jsp/emptyQuote.jsp | 15 + .../src/examples/shop/web/jsp/error.jsp | 11 + .../src/examples/shop/web/jsp/footer.jsp | 5 + .../src/examples/shop/web/jsp/login.jsp | 70 +++++ .../src/examples/shop/web/jsp/productInfo.jsp | 32 +++ .../src/examples/shop/web/jsp/receipt.jsp | 19 ++ .../src/examples/shop/web/jsp/showQuote.jsp | 87 ++++++ .../src/examples/shop/web/jsp/title.jsp | 8 + .../src/examples/shop/web/jsp/wsf.jsp | 22 ++ .../examples/shop/web/servlet/CatalogServlet.java | 167 +++++++++++ .../examples/shop/web/servlet/LoginServlet.java | 166 +++++++++++ .../shop/web/servlet/ShowQuoteServlet.java | 200 +++++++++++++ 40 files changed, 2611 insertions(+) create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/META-INF/application.xml create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/META-INF/ejb-jar.xml create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/META-INF/persistence.xml create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/META-INF/sun-ejb-jar.xml create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/WEB-INF/sun-web.xml create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/WEB-INF/web.xml create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/build.xml create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/client/PricerClient.java create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/client/SetupClient.java create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/entity/Customer.java create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/entity/LineItem.java create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/entity/Order.java create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/entity/Product.java create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/mdb/OrderProcessorBean.java create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/session/CartBean.java create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/session/CatalogBean.java create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/session/PricerBean.java create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/session/UserManagerBean.java create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/Cart.java create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/Catalog.java create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/InvalidLoginNameException.java create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/InvalidPasswordException.java create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/OrderException.java create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/Pricer.java create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/PricerException.java create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/UserManager.java create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/catalog.jsp create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/clearQuote.jsp create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/emptyQuote.jsp create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/error.jsp create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/footer.jsp create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/login.jsp create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/productInfo.jsp create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/receipt.jsp create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/showQuote.jsp create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/title.jsp create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/wsf.jsp create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/servlet/CatalogServlet.java create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/servlet/LoginServlet.java create mode 100644 Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/servlet/ShowQuoteServlet.java (limited to 'Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop') diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/META-INF/application.xml b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/META-INF/application.xml new file mode 100644 index 0000000..fe5919f --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/META-INF/application.xml @@ -0,0 +1,21 @@ + + + + + Application description + Jasmine + + + shop.war + jasmine + + + + shopEjb.jar + + + + diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/META-INF/ejb-jar.xml b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/META-INF/ejb-jar.xml new file mode 100644 index 0000000..9ca92e0 --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/META-INF/ejb-jar.xml @@ -0,0 +1,22 @@ + + + + + PricerBean + examples.shop.impl.session.PricerBean + Stateless + Container + + taxRate + java.lang.Integer + 6 + + + bulkDiscountRate + java.lang.Integer + 10 + + + + + \ No newline at end of file diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/META-INF/persistence.xml b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/META-INF/persistence.xml new file mode 100644 index 0000000..893e1c7 --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/META-INF/persistence.xml @@ -0,0 +1,13 @@ + + + + jdbc/__default + + + + + + + + \ No newline at end of file diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/META-INF/sun-ejb-jar.xml b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/META-INF/sun-ejb-jar.xml new file mode 100644 index 0000000..71fa2ad --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/META-INF/sun-ejb-jar.xml @@ -0,0 +1,13 @@ + + + + OrderProcessorBean + + OrderProcessorBean + jms/OrderQueue + + jms/QueueConnectionFactory + + + + diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/WEB-INF/sun-web.xml b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/WEB-INF/sun-web.xml new file mode 100644 index 0000000..cca518c --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/WEB-INF/sun-web.xml @@ -0,0 +1,5 @@ + + + jasmine + + diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/WEB-INF/web.xml b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/WEB-INF/web.xml new file mode 100644 index 0000000..7bf9dbb --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/WEB-INF/web.xml @@ -0,0 +1,38 @@ + + + + + + + + + + LoginServlet + examples.shop.web.servlet.LoginServlet + + + + LoginServlet + /login/* + + + + ShowQuoteServlet + examples.shop.web.servlet.ShowQuoteServlet + + + + ShowQuoteServlet + /showQuote/* + + + + CatalogServlet + examples.shop.web.servlet.CatalogServlet + + + + CatalogServlet + /catalog/* + + diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/build.xml b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/build.xml new file mode 100644 index 0000000..a403dda --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/build.xml @@ -0,0 +1,87 @@ + + ]> + + + + + + + + + + + + + + + + + + + + &include; + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/client/PricerClient.java b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/client/PricerClient.java new file mode 100644 index 0000000..0bd285b --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/client/PricerClient.java @@ -0,0 +1,52 @@ +package examples.shop.client; + +import java.net.URL; + +import javax.xml.namespace.QName; +import javax.xml.ws.Service; + +import examples.shop.impl.session.PricerBean; + +/** + * This class is an example of a standalone JAX-RPC client code which uses both + * the static stub and the dynamic proxy approach to get a reference to the + * remote Web Service + */ +public class PricerClient { + static String host = "localhost"; + + static String portType = "PricerBean"; + + static String serviceName = "PricerService"; + + static String serviceEndpointAddress = "http://" + host + ":8080/" + + serviceName; + + static String nameSpace = "urn:session.impl.shop.examples"; + + public static void main(String[] args) throws Exception { + + URL wsdlLocation = new URL(serviceEndpointAddress + "/" + portType + + "?WSDL"); + QName serviceNameQ = new QName(nameSpace, serviceName); + + // dynamic service usage + Service service = Service.create(wsdlLocation, serviceNameQ); + PricerBean pricerPort = service.getPort(PricerBean.class); + + String user = "Gerald"; + + System.out.println("Tax rate: " + pricerPort.getTaxRate()); + System.out.println("Discount for : " + user + " is " + + pricerPort.getPersonalDiscountRate(user)); + + System.out + .println("Discount for 1 item (at $1000,- per piece) for " + user + " is " + + pricerPort.getDiscount(1, 1000, user)); + + System.out + .println("Discount for 5 items (at $1000,- per piece) for " + user + " is " + + pricerPort.getDiscount(5, 5000, user)); + + } +} diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/client/SetupClient.java b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/client/SetupClient.java new file mode 100644 index 0000000..c1fbc27 --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/client/SetupClient.java @@ -0,0 +1,58 @@ +package examples.shop.client; + +import java.util.Iterator; + +import javax.naming.Context; +import javax.naming.InitialContext; + +import examples.shop.impl.entity.Product; +import examples.shop.logic.Catalog; +import examples.shop.logic.UserManager; + +/** + * Client test application on a CMP Entity Bean, Product. + */ +public class SetupClient { + + public static void main(String[] args) throws Exception { + + try { + + Context ctx = new InitialContext(System.getProperties()); + Catalog catalog = (Catalog) ctx.lookup(Catalog.class.getName()); + + /* + * Use the catalog to create Products + */ + catalog.addProduct(new Product().init("123-456-7890", "P4-1.8", + "1.8 GHz Pentium 4", 200)); + catalog.addProduct(new Product().init("123-456-7891", "P4-3", + "3 GHz Pentium 4", 300)); + catalog.addProduct(new Product().init("123-456-7892", "P4-4", + "4 GHz Pentium", 400)); + catalog.addProduct(new Product().init("123-456-7893", "SD-256", + "256 MB SDRAM", 50)); + catalog.addProduct(new Product().init("123-456-7894", "SD-512", + "512 MB SDRAM", 100)); + catalog.addProduct(new Product().init("123-456-7895", "DD-1000", + "1GB MB DDRAM", 200)); + catalog.addProduct(new Product().init("123-456-7896", "MP3-x", + "MP3 Player", 200)); + + /* + * Find a Product, and print out it's description + */ + for (Iterator i = catalog.getProductList().iterator(); i + .hasNext();) { + System.out.println(i.next().getDescription()); + } + + UserManager userManager = + (UserManager) ctx.lookup(UserManager.class.getName()); + userManager.createUser("Gerald", "Gerald Brose", "password", + "D-13509 Berlin, Germany"); + } catch (Exception e) { + e.printStackTrace(); + } + } +} diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/entity/Customer.java b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/entity/Customer.java new file mode 100644 index 0000000..c986436 --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/entity/Customer.java @@ -0,0 +1,104 @@ +package examples.shop.impl.entity; + +import javax.persistence.Entity; +import javax.persistence.Id; + +/** + * This entity represents customer details. + */ +@Entity +public class Customer implements java.io.Serializable { + + private String customerID; + + private String name; + + private String password; + + private String address; + + private double discount; + + /** + * Returns the Id of the customer + */ + @Id + public String getCustomerID() { + return customerID; + } + + /** + * Sets the id of the customer + */ + public void setCustomerID(String customerId) { + this.customerID = customerId; + } + /** + * Returns the name of the customer + */ + public String getName() { + return name; + } + + /** + * Sets the name of the customer + */ + public void setName(String name) { + this.name = name; + } + + /** + * Returns the password of the customer + */ + public String getPassword() { + return password; + } + + /** + * Sets the password of the customer + */ + public void setPassword(String password) { + this.password = password; + } + + /** + * Returns the address of the customer + */ + public String getAddress() { + return address; + } + + /** + * Sets the address of the customer + */ + public void setAddress(String address) { + this.address = address; + } + + public double getDiscount() { + return discount; + } + + public void setDiscount(double discount) { + this.discount = discount; + } + + public Customer() { + } + + /** + * Called when new data is created. + * + * We need to initialize our Bean's state with the parameters + * passed from the client by calling our own abstract set + * methods. The Container can then inspect our Bean and + * INSERT the corresponding database entries. + */ + public void init(String id, String name, String password, String address) { + setCustomerID(id); + setName(name); + setAddress(address); + setPassword(password); + } + +} diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/entity/LineItem.java b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/entity/LineItem.java new file mode 100644 index 0000000..447cc75 --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/entity/LineItem.java @@ -0,0 +1,132 @@ +package examples.shop.impl.entity; + +import javax.persistence.Entity; +import javax.persistence.Id; +import javax.persistence.OneToOne; + + +/** + * A line item entity is a quantity of a single product. + * + * Instances of this class are used for both in-memory represenation + * of carts and the persistent representation of orders in + * the database + */ +@Entity +public class LineItem implements java.io.Serializable { + + private String id; + + /** the product */ + private Product product; + + /** Number of items */ + private int quantity; + + /** Amount of the discount for each item */ + private double discount; + + /** + * Constructor + * @param productitem + * @param number of items + * @Param discount for each item + */ + public LineItem(Product productItem, int quantity, double discount) { + System.out.println("LineItem(...) called"); + this.product = productItem; + this.quantity = quantity; + this.discount = discount; + } + + public LineItem() { + System.out.println("New LineItem created."); + } + + /** + * The id number of this line item. This is our primary key as well. + * + * @return the id + */ + @Id + public String getId() { + return id; + } + + /** + * Sets the id + */ + public void setId(String id) { + this.id = id; + } + + + /** + * @return the productitem. + * productitem has product id, name of the product and description + */ + @OneToOne + public Product getProduct() { + System.out.println("LineItem.getProduct() called."); + return product; + } + + /** + * @param productItem. + */ + public void setProduct(Product product) { + System.out.println("LineItem.setProduct() called."); + this.product = product; + } + + /** + * @return the number of items. + */ + public int getQuantity() { + System.out.println("LineItem.getQuantity() called."); + return quantity; + } + + /** + * @param the number of items. + */ + public void setQuantity(int quantity) { + System.out.println("LineItem.setQuantity() called."); + this.quantity = quantity; + } + + /** + * @return the base price. The base price is the + * product's price times the quantity ordered. This + * figure does not take discounts into consideration. + */ + public double basePrice() { + System.out.println("LineItem.getBasePrice() called."); + return quantity * product.getBasePrice(); + } + + /** + * @return the discount that the customer gets on + * this order. + * + * Note: The discount is a whole number, not + * a percentage discount. + */ + public double getDiscount() { + System.out.println("LineItem.getDiscount() called."); + return discount; + } + + /** + * @param the discount that the customer gets on + * this order. + * + * Note: The discount is a whole number, not + * a percentage discount. + */ + public void setDiscount(double discount) { + System.out.println("LineItem.setDiscount(" + discount + ") called."); + this.discount = discount; + } + +} diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/entity/Order.java b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/entity/Order.java new file mode 100644 index 0000000..8986495 --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/entity/Order.java @@ -0,0 +1,183 @@ +package examples.shop.impl.entity; + +import java.sql.Timestamp; +import java.util.Iterator; +import java.util.List; + +import javax.persistence.CascadeType; +import javax.persistence.Entity; +import javax.persistence.Id; +import javax.persistence.OneToMany; +import javax.persistence.Table; + +/** + * This entity represents an order placed for goods. + * + * Note: This entity could easily be extended to include other things, such as: + * + */ + +@Entity +@Table(name = "ORDERS") +public class Order { + + public enum Status { + Submitted, Unverified, Approved, Shipping, Delivered, Returned + }; + + private String orderId; + + private List lineItems; + + private Customer customer; + + private Timestamp orderDate; + + private Status status; + + private double taxes; + + private double subTotal; + + /** + * This order's identification number. It's also our Primary Key. + * + * @return order id + */ + @Id + public String getOrderID() { + return orderId; + } + + /** + * Sets the order id of an order + */ + public void setOrderID(String id) { + orderId = id; + } + + /** + * This represents a one-to-many relationship to the + * line items in the order. Persisting the order cascades + * to the line items. + * + * @return the set of order line items + */ + @OneToMany(cascade = CascadeType.PERSIST) + public List getLineItems() { + return lineItems; + } + + /** + * Sets set of the order line items + */ + public void setLineItems(List lineItems) { + this.lineItems = lineItems; + } + + /** + * @returns the Customer who placed this Order. + */ + public Customer getCustomer() { + return customer; + } + + /** + * set customer who placed this order. + */ + public void setCustomer(Customer customer) { + this.customer = customer; + } + + /** + * Returns the date this order was placed. + */ + public Timestamp getOrderDate() { + return orderDate; + } + + /** + * Sets the date this order + */ + public void setOrderDate(Timestamp orderDate) { + this.orderDate = orderDate; + } + + /** + * @return status information about the order. + */ + public Status getStatus() { + return status; + } + + /** + * Sets status information about the order. + */ + public void setStatus(Status status) { + this.status = status; + } + + /** + * Sets the subtotal of this order + */ + + public double getSubTotal() { + return subTotal; + } + + /** + * Returns the subtotal of this order + */ + public void setSubTotal(double subTotal) { + this.subTotal = subTotal; + } + + /** + * Returns taxes of this order + */ + public double getTaxes() { + return taxes; + } + + /** + * Sets the taxes of this order + */ + public void setTaxes(double taxes) { + this.taxes = taxes; + } + + /** + * Returns the subtotal rice of the entire order, ie. the sum of + * the base prices of all line items in this order. + */ + public double totalPrice() { + double totalPrice = 0; + for (Iterator iter = getLineItems().iterator(); iter + .hasNext();) { + LineItem item = iter.next(); + totalPrice += item.getProduct().basePrice; + } + return totalPrice; + } + + /** + * Called to initialize a new order entity + * + * We need to initialize our entity's state with the parameters passed from + * the client. + */ + public void init(String orderID, Customer customer, Status status, + double subTotal, double taxes) { + System.out.println("Order.init(" + orderID + ") called"); + setOrderID(orderID); + setOrderDate(new java.sql.Timestamp(System.currentTimeMillis())); + setStatus(status); + setSubTotal(subTotal); + setTaxes(taxes); + } + +} diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/entity/Product.java b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/entity/Product.java new file mode 100644 index 0000000..99fb29a --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/entity/Product.java @@ -0,0 +1,93 @@ +package examples.shop.impl.entity; + +import javax.persistence.Entity; +import javax.persistence.Id; + +/** + * Entity + * + * This is a product that's persistent. It has an ID #, a name, + * a description, and a base price. + */ +@Entity +public class Product implements java.io.Serializable { + + public String name; + public String description; + public double basePrice; + public String productID; + + public Product() { + } + + /** + * @return the product id. + */ + @Id + public String getProductID() { + return productID; + } + + /** + * Sets the product id. + */ + public void setProductID(String productID) { + this.productID = productID; + } + + /** + * @return the name of the product. + */ + public String getName() { + return name; + } + + /** + * Sets the name of the product. + */ + public void setName(String name) { + this.name = name; + } + + /** + * @return the description of the product. + */ + public String getDescription() { + return description; + } + + /** + * Sets the description of the product. + */ + public void setDescription(String description) { + this.description = description; + } + + /** + * @return the base price of the product. + */ + public double getBasePrice() { + return basePrice; + } + + /** + * Sets the base price of the product. + */ + public void setBasePrice(double price) { + this.basePrice = price; + } + + + /** + * This is the initialization method + */ + public Product init(String productID, String name, String description, + double basePrice) { + this.productID = productID; + this.name = name; + this.description = description; + this.basePrice = basePrice; + return this; + } + +} diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/mdb/OrderProcessorBean.java b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/mdb/OrderProcessorBean.java new file mode 100644 index 0000000..a1056d1 --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/mdb/OrderProcessorBean.java @@ -0,0 +1,68 @@ +package examples.shop.impl.mdb; + +import javax.ejb.ActivationConfigProperty; +import javax.ejb.EJBException; +import javax.ejb.MessageDriven; +import javax.jms.Message; +import javax.jms.MessageListener; +import javax.jms.TextMessage; +import javax.persistence.EntityManager; +import javax.persistence.PersistenceContext; + +import examples.shop.impl.entity.Order; + + +/** + * This message-driven bean receives JMS messages + * to process orders. It then performs the order + * processing. + */ +@MessageDriven(activationConfig = { + @ActivationConfigProperty( + propertyName = "destinationType", + propertyValue = "javax.jms.Queue") + }) +public class OrderProcessorBean implements MessageListener { + + @PersistenceContext + EntityManager manager; + + public OrderProcessorBean() { + } + + /** + * The one business method that message-driven beans have + * Here we perform the actual order processing + */ + public void onMessage(Message msg) { + TextMessage tm = (TextMessage) msg; + try { + String orderID = tm.getText(); + System.out.println("Processing order " + orderID); + + Order order = manager.find(Order.class, orderID); + + /* + * At this point, we could perform lots of tasks: + * + * - A call-out to a credit card company (perhaps through + * web services) to check the user's credit + * card rating and perform a debit. + * + * - Check the product inventory to ensure availability + * + * - Check the current backlog for shipping orders + * + * - Send an email confirmation + * + * In this example, we'll merely set the order status to + * "approved". + */ + order.setStatus(Order.Status.Approved); + } catch (Exception e) { + e.printStackTrace(); + throw new EJBException(e); + } + } + +} diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/session/CartBean.java b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/session/CartBean.java new file mode 100644 index 0000000..d5e2b1b --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/session/CartBean.java @@ -0,0 +1,320 @@ +package examples.shop.impl.session; + +import java.util.ArrayList; +import java.util.Iterator; +import java.util.List; + +import javax.ejb.Remote; +import javax.ejb.Remove; +import javax.ejb.Stateful; +import javax.jms.Connection; +import javax.jms.ConnectionFactory; +import javax.jms.Destination; +import javax.jms.JMSException; +import javax.jms.MessageProducer; +import javax.jms.Session; +import javax.jms.TextMessage; +import javax.naming.Context; +import javax.naming.InitialContext; +import javax.persistence.EntityManager; +import javax.persistence.PersistenceContext; + +import examples.shop.impl.entity.Customer; +import examples.shop.impl.entity.LineItem; +import examples.shop.impl.entity.Order; +import examples.shop.impl.entity.Product; +import examples.shop.logic.Cart; + +/** + * This stateful session bean represents a cart which a customer is + * working on. A cart is a set of products that the customer is + * interested in, but has not committed to buying yet. + * + * A cart consists of a series of line items. Each line item + * represents one particular product the customer wants, as well as a + * quantity and discount for that product. + * + * The distinction between a cart and an order is that a quote is only + * temporary and in-memory (hence a stateful session bean), whereas an + * order is a persistent record (hence an entity). The cart bean + * knows how to transform itself into an order (via the purchase() + * method). + */ + +@Stateful +@Remote(Cart.class) +public class CartBean implements Cart { + + /** + * The shopping cart owner + */ + private String owner; + + /** + * The shopping cart contents - a vector of LineItems + */ + private List contents = new ArrayList(); + + /** + * The subtotal (price before taxes) of the goods + */ + private double subTotal; + + /** + * The taxes on the goods + */ + private double taxes; + + @PersistenceContext + private EntityManager manager; + + public CartBean() { + } + + /** + * Get method for the shopping cart owner's name + * + * @return shopping cart owner + */ + public String getOwner() { + return owner; + } + + /** + * Set method for the shopping cart owner's name + * + * @param shopping + * cart owner + */ + public void setOwner(String owner) { + this.owner = owner; + } + + /** + * Adds an item to the shopping cart + * + * @param shopping + * cart lineitem + */ + public void add(LineItem lineItem) { + /* + * Search for an exiting line item in the cart that match + * the productID passed in. + */ + for (Iterator iter = contents.iterator(); iter.hasNext();) { + LineItem item = iter.next(); + Product product = item.getProduct(); + + if (product != null + && product.getProductID().equals( + lineItem.getProduct().getProductID())) { + // found one, modify that line item's quantity and return + item.setQuantity(item.getQuantity() + lineItem.getQuantity()); + return; + } + } + + /* + * Did not find a match, so add the line item as new. + */ + contents.add(lineItem); + } + + /** + * Changes the quantities of contents in the shopping cart + * + * @param product + * Id + * @param number + * of items. + */ + public void modify(String productID, int quantity) throws Exception { + System.out.println("CartBean.modify()"); + + /* + * Search for a lineitem in the cart that match the productID passed in. + * If found, modify that lineitem. + */ + for (Iterator iter = contents.iterator(); iter.hasNext();) { + LineItem item = iter.next(); + Product product = item.getProduct(); + if (product != null && product.getProductID().equals(productID)) { + item.setQuantity(quantity); + if (quantity == 0) { + iter.remove(); + } + return; + } + } + throw new Exception("CartBean.modify() error: Could not find product " + + productID); + } + + /** + * Returns all the shopping cart line items + * + * @return A collection of Cart LineItems + */ + public List getAll() { + return contents; + } + + /** + * @return the subtotal price which has been previously set by + * setSubtotal(). + */ + public double getSubtotal() { + return subTotal; + } + + /** + * Sets the subtotal price. + * @param subTotal the subtotal price + */ + public void setSubtotal(double subTotal) { + this.subTotal = subTotal; + } + + /** + * @return the taxes computed for this Cart. + */ + public double getTaxes() { + return taxes; + } + + /** + * Sets the taxes for this Cart. + */ + public void setTaxes(double taxes) { + System.out.println("CartBean.setTaxes(): " + taxes); + this.taxes = taxes; + } + + /** + * Get the total price. The total Price is computed from: + *
    + *
  1. Subtotal price + *
  2. Tax + *
+ * @return the total price. + */ + public double getTotalPrice() { + return subTotal + taxes; + } + + /** + * Empties the shopping cart + */ + public void clear() { + contents.clear(); + } + + /** + * Purchases this cart. The cart will create an order in the database + * and return the order ID as a confirmation number. + * + * @return The Order confirmation number + */ + public String purchase() { + System.out.println("CartBean.purchase()"); + Customer customer = manager.find(Customer.class, owner); + + /* + * Create the order entity + */ + Order order = new Order(); + String orderID = makeUniqueID(); + order.init(orderID, customer, Order.Status.Unverified, subTotal, taxes); + order.setLineItems(prepareContents()); + manager.persist(order); + + /* + * Sends the JMS message to the topic + */ + try { + sendMessage(orderID); + } catch (Exception e) { + // TODO Auto-generated catch block + e.printStackTrace(); + } + + /* + * Return the order ID + */ + return orderID; + } + + /** + * Sends a JMS message to a destination (Queue or Topic) + * + * @param a + * message string, in this case orderId + */ + private void sendMessage(String text) throws Exception { + Connection connection = null; + MessageProducer producer = null; + Session session = null; + + try { + Context jndiContext = new InitialContext(); + ConnectionFactory connectionFactory = (ConnectionFactory) jndiContext + .lookup("jms/QueueConnectionFactory"); + Destination destination = (Destination) jndiContext + .lookup("jms/OrderQueue"); + connection = connectionFactory.createConnection(); + session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE); + producer = session.createProducer(destination); + + connection.start(); + TextMessage msg = session.createTextMessage(); + msg.setText(text); + producer.send(msg); + } catch (Exception ex) { + throw ex; + } finally { + if (connection != null) { + try { + producer.close(); + connection.close(); + session.close(); + } catch (JMSException e) { + // ignore + } + } + } + } + + /** + * Generates primary keys for line items and loads the products + * into the persistence context. + */ + + private List prepareContents() { + for (Iterator iter = contents.iterator(); iter.hasNext();) { + LineItem lineItem = iter.next(); + Product p = manager.find(Product.class, lineItem.getProduct() + .getProductID()); + lineItem.setProduct(p); + lineItem.setId(makeUniqueID()); + } + return contents; + } + + /** + * Returns a unique Id based on current time. Can be removed + * when AUTO key generation works in Glassfish * + */ + private String makeUniqueID() { + String id = new Long(System.nanoTime()).toString(); + System.out.println("makeUniqueID: " + id); + return id; + } + + /** + * Removes this quote, and hence all client- + * specific state. + */ + @Remove + public void remove() { + } +} diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/session/CatalogBean.java b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/session/CatalogBean.java new file mode 100644 index 0000000..658b675 --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/session/CatalogBean.java @@ -0,0 +1,41 @@ +package examples.shop.impl.session; + +import java.util.List; + +import javax.ejb.Remote; +import javax.ejb.Stateless; +import javax.persistence.EntityManager; +import javax.persistence.PersistenceContext; + +import examples.shop.impl.entity.Product; +import examples.shop.logic.Catalog; + +/** + * This catalog Stateless Session Bean retrieves a list of productitems. + * ProductItem has product Id, name of the product and description + */ +@Stateless +@Remote(Catalog.class) +public class CatalogBean implements Catalog { + + @PersistenceContext + private EntityManager manager; + + public CatalogBean() { + } + + public Product getProduct(String productId) { + return manager.find(Product.class, productId); + } + + public List getProductList() { + /* find all products */ + return manager.createQuery("SELECT p FROM Product p") + .getResultList(); + } + + public void addProduct(Product product) { + manager.persist(product); + } + +} diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/session/PricerBean.java b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/session/PricerBean.java new file mode 100644 index 0000000..cbcb73f --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/session/PricerBean.java @@ -0,0 +1,138 @@ +package examples.shop.impl.session; + +import java.util.Iterator; +import java.util.List; + +import javax.annotation.Resource; +import javax.ejb.EJB; +import javax.ejb.Remote; +import javax.ejb.Stateless; +import javax.jws.WebService; + +import examples.shop.impl.entity.Customer; +import examples.shop.impl.entity.LineItem; +import examples.shop.logic.Pricer; +import examples.shop.logic.UserManager; + +/** + * Stateless Session Bean which computes prices based + * upon a set of pricing rules. The pricing rules are + * deployed with the bean as environment properties. + */ +@Stateless +@Remote(Pricer.class) +@WebService(serviceName="PricerService", portName="PricerPort") +public class PricerBean implements Pricer { + + @Resource(name="taxRate") + public int taxRate = 0; + + @Resource(name="bulkDiscountRate") + public int bulkDiscountRate = 0; + + @EJB + UserManager userManager; + + public PricerBean() { + } + + /** + * bulk discounts apply to quantities of BULK or more items + */ + private static final int BULK = 5; + + /** + * This method computes the applicable discount in absolute + * figure, based on bulk and personal discounts that may apply. + * + * @param quantity the number of items that a user intends to buy + * @param basePrice the overall, non-discounted volume of the + * purchase (individual price times quantity) + * @param the user name + * @return the subTotal for the line item after applying any + * applicable discounts, excluding taxes + */ + public double getDiscount(int quantity, double basePrice, String user) { + double discountRate = getPersonalDiscountRate(user); + if (quantity >= BULK) { + discountRate += getBulkDiscountRate(); + System.out.println("Using getBulkDiscountRate " + getBulkDiscountRate()); + } + + /* + * Calculate the discount in absolute figures + */ + return basePrice * (discountRate / 100); + } + + /** + * A bulk discount applies to quantities of more than 5 pieces. + * @return the bulk discount rate int percent + */ + public double getBulkDiscountRate() { + return this.bulkDiscountRate; + } + + /** + * Customers with certain names get discounts. The discount rules + * are stored in the environment properties that the bean is + * deployed with. + */ + public double getPersonalDiscountRate(String userName) { + /* + * Get the name of this customer. + */ + Customer user = userManager.getUser(userName); + if( user != null) + return user.getDiscount(); + else + return 0; + } + + /** + * Computes the subtotal price for a set of products the customer + * is interested in. The subtotal takes into account the price of + * each product the customer wants, the quantity of each product, + * and any personal discounts the customer gets. However, the + * subtotal ignores taxes. + * + * @param quote All the data needed to compute the + * subtotal is in this parameter. + */ + public double priceSubtotal(String user, List items) { + System.out.println("PricerBean.priceSubtotal() called"); + + /* + * Compute the subtotal + */ + double subTotal = 0; + + for(Iterator iter = items.iterator(); iter.hasNext(); ) { + LineItem item = iter.next(); + item.setDiscount( + getDiscount(item.getQuantity(), item.basePrice(),user)); + + /* + * Add the price to the subtotal. + */ + subTotal += (item.basePrice() - item.getDiscount()); + } + + return subTotal; + } + + /** + * Computes the taxes on a quote. + */ + public double priceTaxes(double subtotal) { + System.out.println("PricerBean.priceTaxes() called, taxes: " + getTaxRate()); + return (getTaxRate() / 100) * subtotal; + } + + /** + * @return the applicable tax rate + */ + public double getTaxRate() { + return taxRate; + } +} diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/session/UserManagerBean.java b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/session/UserManagerBean.java new file mode 100644 index 0000000..babb67e --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/impl/session/UserManagerBean.java @@ -0,0 +1,86 @@ +package examples.shop.impl.session; + +import java.util.Iterator; +import java.util.List; + +import javax.ejb.Remote; +import javax.ejb.Stateless; +import javax.persistence.EntityManager; +import javax.persistence.PersistenceContext; + +import examples.shop.impl.entity.Customer; +import examples.shop.logic.InvalidPasswordException; +import examples.shop.logic.UserManager; + +/** + * UserManager is Stateless session bean resposible for creating and + * retrieving a customer record. It also authenticates the user. + */ + +@Stateless +@Remote(UserManager.class) +public class UserManagerBean implements UserManager { + + @PersistenceContext + EntityManager manager; + + public UserManagerBean() { + } + + /** + * Returns an customer object for the given customer id. + */ + public Customer getUser(String customerId) { + return manager.find(Customer.class, customerId); + } + + /** + * It uses the customer entity bean to create a record in the databse + * @param customerId + * @param name + * @param password + * @param address + */ + + public Customer createUser(String customerId, String name, String password, String address) { + Customer customer = new Customer(); + customer.init(customerId, name, password, address); + manager.persist(customer); + return customer; + } + + /** + * This method authenticates the user + * + * @return true, if the password is correct + * @throws an InvalidPasswordException if password is incorrect. + */ + + public boolean validateUser(String customerID, String password) + throws InvalidPasswordException { + if(customerID== null || password == null) + throw new IllegalArgumentException("id " + customerID + " pw " + password); + Customer user = getUser(customerID); + if (user != null && password.equals(user.getPassword())) { + return true; + } else { + System.out.println("Failure to validate user ID " + customerID + + " with password " + password + " against password " + + user.getPassword()); + + throw new InvalidPasswordException("Invalid Password:" + + password); + } + } + + public List findAllCustomers() { + return manager.createQuery("SELECT c FROM Customer c").getResultList(); + } + + public void removeAllCustomers() { + List l = manager.createQuery("SELECT c FROM Customer c ").getResultList(); + for(Iterator iter = l.iterator(); iter.hasNext();) { + manager.remove(iter.next()); + } + } +} diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/Cart.java b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/Cart.java new file mode 100644 index 0000000..b636de2 --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/Cart.java @@ -0,0 +1,81 @@ +package examples.shop.logic; + +import java.util.List; + +import examples.shop.impl.entity.LineItem; + +/** + * The Cart interface. + */ +public interface Cart { + + /** + * Adds an item to the shopping cart + */ + public void add(LineItem lineItem); + + /** + * Changes the quantities of contents in the shopping cart + */ + public void modify(String productID, int quantity) + throws Exception; + + /** + * Returns all the shopping cart line items + * + * @return A collection of Cart LineItems + */ + public List getAll(); + + /** + * Empties the shopping cart + */ + public void clear(); + + /** + * Get/set methods for the shopping cart owner's name + */ + public String getOwner(); + + public void setOwner(String owner); + + /** + * Purchases this cart. The cart will create an order in the database. + * + * @return The Order confirmation number + */ + public String purchase(); + + /** + * Returns the subtotal price which has been previously set by + * setSubtotal(). + * + * @return the subtotal of this cart items. + */ + public double getSubtotal(); + + /** + * Sets the subtotal price. Our external pricer bean is responsible for + * calculating the subtotal. It calculates it based upon customer discounts + * (and can be extended to include other rules as well). + */ + public void setSubtotal(double subTotal); + + /** + * Returns the taxes for this Quote. + */ + public double getTaxes(); + + /** + * Sets the taxes for this Quote. + */ + public void setTaxes(double taxes); + + /** + * Returns the total price. Total Price is computed from: 1) Subtotal price + * 2) Tax + */ + public double getTotalPrice(); + + +} diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/Catalog.java b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/Catalog.java new file mode 100644 index 0000000..32310fd --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/Catalog.java @@ -0,0 +1,31 @@ +package examples.shop.logic; + +import java.util.*; + +import examples.shop.impl.entity.Product; + +/** + * This is the Catalog business interface. + */ + +public interface Catalog { + + /** + * @return a vector of Products + */ + public List getProductList(); + + /** + * @return a Product for the given product id. + */ + public Product getProduct(String productId); + + /** + * Add a new product to the catalog + * @param product + */ + public void addProduct(Product product); + +} + + diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/InvalidLoginNameException.java b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/InvalidLoginNameException.java new file mode 100644 index 0000000..4583f48 --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/InvalidLoginNameException.java @@ -0,0 +1,19 @@ +package examples.shop.logic; + +/** + * Exceptions thrown by usermanager + */ +public class InvalidLoginNameException extends Exception { + + public InvalidLoginNameException() { + super(); + } + + public InvalidLoginNameException(Exception e) { + super(e.toString()); + } + + public InvalidLoginNameException(String s) { + super(s); + } +} diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/InvalidPasswordException.java b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/InvalidPasswordException.java new file mode 100644 index 0000000..5d0db3c --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/InvalidPasswordException.java @@ -0,0 +1,19 @@ +package examples.shop.logic; + +/** + * Exceptions thrown by usermanager + */ +public class InvalidPasswordException extends Exception { + + public InvalidPasswordException() { + super(); + } + + public InvalidPasswordException(Exception e) { + super(e.toString()); + } + + public InvalidPasswordException(String s) { + super(s); + } +} \ No newline at end of file diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/OrderException.java b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/OrderException.java new file mode 100644 index 0000000..bd08de0 --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/OrderException.java @@ -0,0 +1,19 @@ +package examples.shop.logic; + +/** + * Exceptions thrown by Order + */ +public class OrderException extends Exception { + + public OrderException() { + super(); + } + + public OrderException(Exception e) { + super(e.toString()); + } + + public OrderException(String s) { + super(s); + } +} diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/Pricer.java b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/Pricer.java new file mode 100644 index 0000000..5c10b41 --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/Pricer.java @@ -0,0 +1,50 @@ +package examples.shop.logic; + +import java.util.List; + +import examples.shop.impl.entity.LineItem; + +/** + * These are the business logic methods exposed publicly by the + * Pricer component, a function that computes a price for a + * given user and base price. + */ + +public interface Pricer { + /** + * Computes the price of a set of goods + */ + + public double priceSubtotal(String user, List items); + + public double priceTaxes(double subtotal); + + /** + * @return the applicable tax rate + */ + double getTaxRate(); + + /** + * @return the current discount rate for buying lots of items + */ + double getBulkDiscountRate(); + + /** + * @return the discount rate for a given user in percent + */ + double getPersonalDiscountRate(String userName); + + /** + * This method computes the applicable discount in absolute + * figure, based on bulk and personal discounts that may apply. + * + * @param quantity the number of items that a user intends to buy + * @param basePrice the overall, non-discounted volume of the + * purchase (individual price times quantity) + * @param the user name + * @return the subTotal for the line item after applying any + * applicable discounts, excluding taxes + */ + double getDiscount(int quantity, double basePrice, String user); + +} diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/PricerException.java b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/PricerException.java new file mode 100644 index 0000000..e198a6a --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/PricerException.java @@ -0,0 +1,19 @@ +package examples.shop.logic; + +/** + * Exceptions thrown by Pricer + */ +public class PricerException extends Exception { + + public PricerException() { + super(); + } + + public PricerException(Exception e) { + super(e.toString()); + } + + public PricerException(String s) { + super(s); + } +} diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/UserManager.java b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/UserManager.java new file mode 100644 index 0000000..f34575d --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/logic/UserManager.java @@ -0,0 +1,38 @@ +package examples.shop.logic; + +import java.util.List; + +import examples.shop.impl.entity.Customer; + +/** + * This is the UserManager interface. + */ +public interface UserManager { + + /** + * It uses the customer entity bean to crate a record in the databse + */ + public Customer createUser(String customerId, String name, String password, + String address); + + /** + * Returns an user object for the given customer id. It uses customer entity + * bean to retrieve the user record. + */ + public Customer getUser(String customerId); + + /** + * Authenticate the user. + */ + public boolean validateUser(String login, String password) + throws InvalidPasswordException; + + /** + * Demo lookup + * + * @return + */ + public List findAllCustomers(); + + public void removeAllCustomers(); +} diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/catalog.jsp b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/catalog.jsp new file mode 100644 index 0000000..92ccf8d --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/catalog.jsp @@ -0,0 +1,44 @@ +<%-- This JSP Retrieves products vector from HttpSession and displays in table format. + The product details includes name the product and its base price. User can view the + product details by clicking on name of the product. User can also add a product to + the shopping cart by clicking on add to cart link. When user clicks on add to cart + link, item is added to the cart and displays same at the bottom of the screen. + +--%> +<%@ page import="examples.shop.impl.entity.Product" %> + + Jasmine's Catalog page + + +

View Current Shopping Cart

+

Please choose from our selections

+
+ <% + //Retrieves catalog vector from HTTPSession and displays product item details in a table format + session = request.getSession(false); + java.util.Vector products=(java.util.Vector)session.getAttribute("products"); + int size=products.size(); + Product item=null; + for(int i=0; i + + + + + + <%}%> +
<%=item.getName()%><%=item.getBasePrice()%> Add to Cart
+

+ <% + // Displays the name of the product item added to the cart, at the bottom of the page. + String productName = (String) request.getAttribute("ProductPurchased"); + if (productName != null) { + %> + <%=productName%> has been added to your shopping cart. + <% } %> + + + + + diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/clearQuote.jsp b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/clearQuote.jsp new file mode 100644 index 0000000..0c13d29 --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/clearQuote.jsp @@ -0,0 +1,15 @@ +<%-- When user clicks on clear cart button, servlet forwards request to this jsp --%> + + Jasmine's Clear Cart page + + + + You just cleared your Cart! +
  +
+

+ Back to the main page +
+ + + diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/emptyQuote.jsp b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/emptyQuote.jsp new file mode 100644 index 0000000..f0779bd --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/emptyQuote.jsp @@ -0,0 +1,15 @@ +<%-- If shopping cart is empty and user clicks on shopping cart link, servlet forwards request to this jsp --%> + + Jasmine's Empty Cart page + + + Your Cart is empty. +
  +
+
+ Back to the web storefront. +
+ + + + diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/error.jsp b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/error.jsp new file mode 100644 index 0000000..47aaca8 --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/error.jsp @@ -0,0 +1,11 @@ +<%-- JSP container forwards request to this jsp, if any exceptions in processing --%> + + Jasmine's Error page + + +

Error in processing your request. +

Please contact System Administrator +

Click here to return to the main page. + + + diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/footer.jsp b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/footer.jsp new file mode 100644 index 0000000..2df4e29 --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/footer.jsp @@ -0,0 +1,5 @@ +<%-- Diplays Footer --%> +

+© 2004-2006, Jasmine's Computer Parts, Inc., All rights reserved. +
+ diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/login.jsp b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/login.jsp new file mode 100644 index 0000000..8d773b3 --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/login.jsp @@ -0,0 +1,70 @@ +<%-- + This JSP displays a login screen. When the user fills out the login + screen, it will submit it to the Login Servlet, which will verify the + user's credentials by calling EJB components. + + If the verification is unsuccessful, the login servlet will return + the user to this page to re-enter his credentials. + + If the verification is successful, Jasmine's main page will be displayed. +--%> + + + + Jasmine's Login page + + + + +<%-- Include the title, which is "Jasmine's Computer Parts"--%> + + +<%-- Indicate the error page to use if an error occurs --%> + + +<%-- Display the login form --%> +

Please enter login information

+

+

+ + + + + + + + + + + + + +
Name: + +
Password: + +
+ + +
+
+ +<% + // get whether the person logged in successfully + Boolean failed = (Boolean) request.getAttribute("loginFailed"); + if (failed != null) { + if (failed.booleanValue() == true) { +%> +

+ Could not log in! Please try again. +

+<% + } + } +%> + +<%-- Include the page footer --%> + + + + diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/productInfo.jsp b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/productInfo.jsp new file mode 100644 index 0000000..e18ea8a --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/productInfo.jsp @@ -0,0 +1,32 @@ +<%--This JSP displays details of the selected product. + Customer can add this item to the shopping cart by clicking on add to cart link. + Customer has provision to navigate to the catalog as well as to the shopping cart pages. + --%> +<%@ page import="examples.shop.impl.entity.Product" %> + + + Jasmine's Product Info page + + + + + <% + //Retrieves the productItem from request object and displays. + Product item=(Product)request.getAttribute("productItem"); + %> + + <%=item.getName()%> +

Description:

+ <%=item.getDescription()%> +

Base price (before discounts):<%=item.getBasePrice()%>

+ +
+ Add this item to Cart
+ See the Catalog
+ View Current Shopping Cart + + + +
+ + diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/receipt.jsp b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/receipt.jsp new file mode 100644 index 0000000..448a26b --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/receipt.jsp @@ -0,0 +1,19 @@ +<%--This JSP displays order confirmation. When user clicks on order button, + Order will be created in the database and order confirmation number will be + displayed to the customer. + --%> + + Jasmine's Order Confirmation page + + + + <%-- Retrieves Order Id from request object and displays.--%> +

Thank you for shopping with us. +

Your order number is <%=request.getAttribute("orderID")%> +

Please shop with us again soon! +

+

Click here to return to the main page. + + + + diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/showQuote.jsp b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/showQuote.jsp new file mode 100644 index 0000000..d01abbb --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/showQuote.jsp @@ -0,0 +1,87 @@ +<%-- + This JSP displays details of the products added to the cart. + The details includes the name of the product, quantity, base price, + discount and total price of each line item. It also displays subtotal, + taxes and grand total of the entire cart. Customer has provision to + modify the quantities, order the contents and clear the cart. + +--%> + + Jasmine's Shopping Cart page + + + + <%@ page import="examples.shop.impl.entity.Product" %> + <%@ page import="examples.shop.impl.entity.LineItem" %> + <%@ page import="java.util.List" %> + <%@ page import="java.util.Iterator" %> + <%@ page import="java.text.NumberFormat" %> +

+
+ + + + + + + + <% + // get the lineItems from the request object and displays in a table format. + List lineItems = (List)request.getAttribute("lineItems"); + double subTotal=((Double)request.getAttribute("subTotal")).doubleValue(); + double taxes=((Double)request.getAttribute("taxes")).doubleValue(); + double taxRate=((Double)request.getAttribute("taxRate")).doubleValue(); + double total=((Double)request.getAttribute("total")).doubleValue(); + + for(Iterator iter = lineItems.iterator(); iter.hasNext();) { + LineItem li = iter.next(); + int quantity = li.getQuantity(); + double discount = li.getDiscount(); + Product product = li.getProduct(); + String productID = product.getProductID(); + double basePrice = product.getBasePrice(); + %> + + + + + + + + + <% } %> +
Name Quantity Individual Base Price Discount Total Price
<%=product.getName()%><%=basePrice%><%=discount%><%=basePrice*quantity-discount%>
+
+
+ + + + + + + + + + + + + + + +
Subtotal:<%=subTotal%>
Sales Tax: <%=taxes%>(<%=taxRate%>)%
Grand Total: <%=total%>
+ +

+ See the Catalog +       +       +       + + + + + diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/title.jsp b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/title.jsp new file mode 100644 index 0000000..afaaea1 --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/title.jsp @@ -0,0 +1,8 @@ +<%-- Diplays title --%> +

+

+

+

Jasmine's Computer Parts

+
+

+
\ No newline at end of file diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/wsf.jsp b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/wsf.jsp new file mode 100644 index 0000000..de589f1 --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/jsp/wsf.jsp @@ -0,0 +1,22 @@ +<%-- + This JSP page displays Jasmine's main screen. + Customers can navigate to the catalog as well as + to the shopping cart page. +--%> + + + + Jasmine's Main page + + + + + +

Catalog

+

Choose from our excellent selection of computer parts.


+

Shopping Cart

+

Look at your shopping cart to see the equipment you've chosen.

+ + + + diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/servlet/CatalogServlet.java b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/servlet/CatalogServlet.java new file mode 100644 index 0000000..1a0049a --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/servlet/CatalogServlet.java @@ -0,0 +1,167 @@ +package examples.shop.web.servlet; + +import java.io.IOException; +import java.util.Iterator; +import java.util.List; +import java.util.Vector; + +import javax.naming.Context; +import javax.naming.InitialContext; +import javax.naming.NamingException; +import javax.servlet.ServletConfig; +import javax.servlet.ServletException; +import javax.servlet.http.HttpServlet; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; +import javax.servlet.http.HttpSession; + +import examples.shop.impl.entity.LineItem; +import examples.shop.impl.entity.Product; +import examples.shop.logic.Cart; +import examples.shop.logic.Catalog; + +/** + * This servlet displays a catalog of products to + * the end-user. + * + * By the time this servlet is called, the user has + * logged in (via the Login servlet), and has a shopping + * cart started (i.e. Cart bean). Since this servlet is + * pooled and re-used for different user requests, the + * servlet code does not store any information specific to + * any user. Rather, we store a reference to the user's + * Cart in the user's HttpSession object, which is + * globally accessible to all servlets. + */ +public class CatalogServlet extends HttpServlet { + + public Catalog catalog; + + /** + * The servlet engine calls this method once to + * initialize a servlet instance. + */ + public void init(ServletConfig config) throws ServletException { + super.init(config); + try { + Context ctx = new InitialContext(); + catalog = (Catalog)ctx.lookup(Catalog.class.getName()); + } catch (NamingException e) { + e.printStackTrace(); + } + } + + /** + * The servlet engine calls this method when the user's + * desktop browser sends an HTTP request. + */ + public void service(HttpServletRequest request, HttpServletResponse response) + throws ServletException, IOException { + List products = null; + try { + /* + * Get the user's HttpSession, and from that get + * the user's current cart. + */ + HttpSession session = request.getSession(false); + if (session == null) { + /* + * Redirect user to login page if he + * doesn't have a session. + */ + response.sendRedirect(response + .encodeRedirectURL("/jasmine/login")); + return; + } + + Object obj = session.getAttribute("cart"); + if (obj == null) { + /* + * Redirect user to login page if he + * doesn't have a session. + */ + response.sendRedirect(response + .encodeRedirectURL("/jasmine/login")); + return; + } + Cart cart = (Cart) obj; + String productIDToAdd = request.getParameter("Buy"); + products = (Vector) session.getAttribute("products"); + String productId = (String) request.getParameter("productId"); + + /* + * If user wants to purchase something (via + * the URL parameter 'Buy'), add the desired + * product item to the cart. + */ + + if (productIDToAdd != null) { + /* + * Creates LineItem, and add to the cart. + */ + try { + Product item = getProductItem(products, productIDToAdd); + cart.add(new LineItem(item, 1, 0)); + // Set a flag so that JSP knows which product we purchased + request.setAttribute("ProductPurchased", item.getName()); + // Forwards the request to the catalog JSP + this.getServletContext().getRequestDispatcher( + "/catalog.jsp").forward(request, response); + return; + } catch (Exception e) { + throw new ServletException(e.toString()); + } + } + /* + * If user wants to view the product details (via + * the URL parameter 'productId') + */ + else if (productId != null) { + //Retrieves the product item from the prducts vector and pass it in request object. + request.setAttribute("productItem", getProductItem(products, + productId)); + // Forwards the request to the productInfo JSP + this.getServletContext().getRequestDispatcher( + "/productInfo.jsp").forward(request, response); + return; + } + /* + * If products vector = null,Retrieves productItems vector + * from Catalog stateless session bean and put it in the + * HttpSession. we may need to put this vector in + * application level instead of session. + */ + else { + if (products == null) { + products = catalog.getProductList(); + session.setAttribute("products", products); + } + // Forwards the request to the catalog JSP + this.getServletContext().getRequestDispatcher("/catalog.jsp") + .forward(request, response); + return; + } + } catch (Exception e) { + e.printStackTrace(); + } + } + + /** + * Returns the product for the given product id, if it is in the vector + */ + + private Product getProductItem(List products, String productIDToAdd) { + for (Iterator iter = products.iterator(); iter.hasNext();) { + Product item = iter.next(); + if (item.getProductID().equals(productIDToAdd)) { + return item; + } + } + return null; + } + + public String getServletInfo() { + return "The Catalog servlet adds products to the user's " + + "cart and prints the catalog."; + } +} diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/servlet/LoginServlet.java b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/servlet/LoginServlet.java new file mode 100644 index 0000000..0340fd9 --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/servlet/LoginServlet.java @@ -0,0 +1,166 @@ +package examples.shop.web.servlet; + +import java.io.IOException; + +import javax.ejb.EJB; +import javax.naming.Context; +import javax.naming.InitialContext; +import javax.servlet.RequestDispatcher; +import javax.servlet.ServletConfig; +import javax.servlet.ServletException; +import javax.servlet.http.HttpServlet; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; +import javax.servlet.http.HttpSession; + +import examples.shop.logic.Cart; +import examples.shop.logic.UserManager; + +/** + * This is the very first servlet the client deals with. It's a Login + * authentication servlet and asks the user for his name and password, + * and pass it to the UserManager stateless session bean for verificatiion. + * + * If the user authenticates properly, a reference to a new Cart is saved + * in his HttpSession object, and the user can begin to add items to his + * cart and shop around. + */ +public class LoginServlet extends HttpServlet { + + /** the user manager used to authenticate the user */ + @EJB + UserManager userManager; + + /** the user's cart object */ + @EJB + Cart cart; + + /** + * The servlet engine calls this method once to initialize a servlet + * instance. + */ + public void init(ServletConfig config) throws ServletException { + super.init(config); + try { + /* + * Get the initial context using the above startup params. + */ + + Context ctx = new InitialContext(); + userManager = (UserManager) ctx.lookup(UserManager.class + .getName()); + cart = (Cart) ctx.lookup(Cart.class.getName()); + + } catch (Exception e) { + log(e); + throw new ServletException(e.toString()); + } + } + + /** + * The servlet engine calls this method when the user's desktop browser + * sends an HTTP request. + */ + public void service(HttpServletRequest request, HttpServletResponse response) + throws ServletException, IOException { + /* + * Set up the user's HttpSession + */ + HttpSession session = request.getSession(true); + + System.out.println(request.getAttributeNames().toString()); + /* + * Retrieve the login name / password from the URL string. + */ + String loginName = request.getParameter("Login"); + String password = request.getParameter("Password"); + boolean isLogin = false; + + /* + * If user has not tried to log in yet, present him with the login + * screen. + */ + if ((loginName == null) || (password == null)) { + writeForm(request, response, false); + return; + } else { + /* + * Otherwise, the user has been to this screen already, and has + * entered some information. Verify that information. + */ + try { + isLogin = userManager.validateUser(loginName, password); + } catch (Exception e) { + writeForm(request, response, true); + e.printStackTrace(); + return; + } + /* + * If the passwords match, make a new Cart Session Bean, and add it + * to the user's HttpSession object. When the user navigates to + * other servlets, the other servlets can access the HttpSession to + * get the user's Cart. + */ + if (isLogin) { + try { + cart.setOwner(loginName); + cart.clear(); + session.setAttribute("cart", cart); + + /* + * Call the main page + */ + RequestDispatcher disp = this.getServletContext() + .getRequestDispatcher("/wsf.jsp"); + disp.forward(request, response); + + return; + } catch (Exception e) { + log(e); + throw new ServletException(e.toString()); + } + } else + writeForm(request, response, true); + } + + /* + * If there was no match, the user is not authenticated. Present another + * login screen to him, with an error message indicating that he is not + * authenticated. + */ + writeForm(request, response, true); + } + + /** + * Writes the Login Screen (private use only) + * + * @param showError + * true means show an error b/c client was not authenticated last + * time. + */ + private void writeForm(HttpServletRequest request, + HttpServletResponse response, boolean showError) + throws ServletException, IOException { + + /* + * Set a variable indicating whether or not we failed to log-in. The JSP + * will read this variable. + */ + request.setAttribute("loginFailed", new Boolean(showError)); + + /* + * Forward the request to the login JSP + */ + RequestDispatcher disp = this.getServletContext().getRequestDispatcher( + "/login.jsp"); + disp.forward(request, response); + } + + private void log(Exception e) { + e.printStackTrace(); + } + + public String getServletInfo() { + return "The Login servlet verifies a user."; + } +} diff --git a/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/servlet/ShowQuoteServlet.java b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/servlet/ShowQuoteServlet.java new file mode 100644 index 0000000..d4449d4 --- /dev/null +++ b/Master/Reference Architectures and Patterns/EJB 3.0 Code/Gerald Examples/src/examples/shop/web/servlet/ShowQuoteServlet.java @@ -0,0 +1,200 @@ +package examples.shop.web.servlet; + +import java.io.IOException; +import java.util.Enumeration; +import java.util.List; + +import javax.naming.Context; +import javax.naming.InitialContext; +import javax.naming.NamingException; +import javax.servlet.ServletConfig; +import javax.servlet.ServletException; +import javax.servlet.http.HttpServlet; +import javax.servlet.http.HttpServletRequest; +import javax.servlet.http.HttpServletResponse; +import javax.servlet.http.HttpSession; + +import examples.shop.impl.entity.LineItem; +import examples.shop.logic.Cart; +import examples.shop.logic.Pricer; + +/** + * This servlet allows the user to view and modify his current selections. + * + * By the time this servlet is called, the user has logged in (via the Login + * servlet), and has a shopping cart started (i.e. cart bean). Since this + * servlet is pooled and re-used for different user requests, the servlet code + * does not store any information specific to any user. Rather, we store a + * reference to the user's cart in the user's HttpSession object, which is + * globally accessible to all servlets. + */ +public class ShowQuoteServlet extends HttpServlet { + + // Pricer for pricing the cart + private Pricer pricer; + + /** + * The servlet engine calls this method once to initialize a servlet + * instance. + * + * In the body of this method, we need to acquire a Pricer EJB Object for + * pricing the carts. + */ + public void init(ServletConfig config) throws ServletException { + /* + * Call parent to store the config object, so that getServletConfig() + * can return it. + */ + super.init(config); + try { + Context ctx = new InitialContext(); + pricer = (Pricer)ctx.lookup(Pricer.class.getName()); + } catch (NamingException e) { + e.printStackTrace(); + } + } + + /** + * The servlet engine calls this method when the user's desktop browser + * sends an HTTP GET request. + */ + public void service(HttpServletRequest request, HttpServletResponse response) + throws ServletException, IOException { + /* + * Get the user's HttpSession, and from that get the user's current + * cart. + */ + HttpSession session = request.getSession(false); + if (session == null) { + /* + * Redirect user to login page if no session + */ + response.sendRedirect(response.encodeRedirectURL("/jasmine/login")); + return; + } + + Object obj = session.getAttribute("cart"); + if (obj == null) { + /* + * Redirect user to login page if no session + */ + response.sendRedirect(response.encodeRedirectURL("/jasmine/login")); + return; + } + + Cart cart = (Cart) obj; + + /* + * If the user clicked the 'Order' button, he wants to purchase his + * selections. We forward the user to the servlet that handles + * purchasing. + */ + if (request.getParameter("Order") != null) { + /* + * First, turn the cart into an order + */ + String orderId = cart.purchase(); + /* + * Stick the orderID in the request so the JSP gets it + */ + request.setAttribute("orderID", orderId); + cart.clear(); + this.getServletContext().getRequestDispatcher("/receipt.jsp") + .forward(request, response); + return; + } + + /* + * Next, we need to figure out what button the user clicked, if any. + * These come to us as form parameters. We need to loop through each + * parameter and interpret it. + */ + Enumeration paramNames = request.getParameterNames(); + while (paramNames.hasMoreElements()) { + String paramName = (String) paramNames.nextElement(); + String paramValue = request.getParameter(paramName); + + /* + * If user clicked 'Update' button, then the user wants to change + * the quantities of each product he is ordering. We'll process + * those quantities below. + */ + if (paramName.equals("Update")) { + } else if (paramName.equals("Clear")) { + /* + * The user wants to clear the form + */ + cart.clear(); + this.getServletContext() + .getRequestDispatcher("/clearQuote.jsp").forward( + request, response); + return; + } else { + /* + * If the parameter represents a quantity of a particular + * product the user is interested in, then we should update that + * product's quantity to reflect this new value. + */ + try { + /* + * Convert the quantity to int format, and set the new + * quantity + */ + int quantity = Integer.parseInt(paramValue); + cart.modify(paramName, quantity); + } catch (NumberFormatException e) { + throw new ServletException("Bad parameter to servlet: " + + paramName + ", " + paramValue); + } catch (Exception e) { + throw new ServletException(e.toString()); + } + } + } + + /* + * Recalculate all totals based upon new quantities + */ + try { + cart.setSubtotal(pricer.priceSubtotal(cart.getOwner(), cart.getAll())); + cart.setTaxes(pricer.priceTaxes(cart.getSubtotal())); + } catch (Exception e) { + log(e); + throw new ServletException(e.toString()); + } + + /* + * Otherwise, show the current cart again + */ + List lineItems = cart.getAll(); + if (lineItems.size() > 0) { + /* + * Stick lineitems, subtotal, taxes and total in request + */ + request.setAttribute("lineItems", lineItems); + request.setAttribute("subTotal", new Double(cart.getSubtotal())); + request.setAttribute("taxes", new Double(cart.getTaxes())); + request.setAttribute("taxRate", new Double(pricer.getTaxRate())); + request.setAttribute("total", new Double(cart.getTotalPrice())); + // Forwards the request to the showQuote JSP. + this.getServletContext().getRequestDispatcher("/showQuote.jsp") + .forward(request, response); + return; + } else { + /* + * If there are no products, print out that the cart is empty. + */ + this.getServletContext().getRequestDispatcher("/emptyQuote.jsp") + .forward(request, response); + return; + } + } + + private void log(Exception e) { + e.printStackTrace(); + } + + public String getServletInfo() { + return "The ShowQuote servlet returns information about" + + "the products that the user is in the process of ordering."; + } +} -- cgit v1.2.3