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A P P E N D I X  A
CDShopCart Source Files

This appendix displays the code for the following CDShopCart components:

This code is also available as source files within the CDShopCart application zip file, which you can download from the Forte for Java Developer Resources portal at:

http://forte.sun.com/ffj/documentation/tutorialsandexamples.html


Tip - If you use these files to cut and paste code into the Forte for Java 4 Source Editor, all formatting is lost. To automatically reformat the code in the Source Editor, select the code you want to reformat, then press Control-Shift F.


ProductList.jsp Source



<%@page contentType="text/html"%>

<html>

<head><title>CD Catalog List</title></head>

<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %>

<%@ taglib prefix="sql" uri="http://java.sun.com/jstl/sql" %>

<body>

<h1> CD Catalog List </h1>

 

<sql:setDataSource var="productDS"

	url="jdbc:pointbase:server://localhost/cdshopcart"

	driver="com.pointbase.jdbc.jdbcUniversalDriver"

	user="PBPUBLIC" />

 

<%--<sql:setDataSource var="productDS"

	url="jdbc:oracle:thin:@<hostname>:<port#>:<SID>"

	driver="oracle.jdbc.driver.OracleDriver"

	user="userid" /> --%>

 

<%--<sql:setDataSource var="productDS"

	url="jdbc:weblogic:mssqlserver4:<database>@<hostname>:<port#>"

	driver="weblogic.jdbc.mssqlserver4.Driver"

	user="userid" /> --%>

 

<sql:query var="productQuery"  dataSource="${productDS}"  >

	SELECT * FROM CD 

</sql:query>

 

<TABLE border=1>

	<TR>

		<TH>ID</TH>

		<TH>CD Title</TH>

		<TH>Artist</TH>

		<TH>Country</TH>

		<TH>Price</TH>

	</TR>

 

<c:forEach var="row" items="${productQuery.rows}">

	<TR>

		<TD><c:out value="${row.ID}"/></TD>

		<TD><c:out value="${row.CDTITLE}"/></TD>

		<TD><c:out value="${row.ARTIST}"/></TD>

		<TD><c:out value="${row.COUNTRY}"/></TD>

		<TD><c:out value="${row.PRICE}"/></TD>

		<TD> 

		<form method=get action="ShopCart.jsp">

			<input type=hidden name=cdId value="<c:out value="${row.ID}"/>">

			<input type=hidden name=cdTitle value="<c:out value="${row.CDTITLE}"/>">

			<input type=hidden name=cdPrice value="<c:out value="${row.PRICE}"/>">

			<input type=submit name=operation value=Add>

		</form>

		</TD>

	</TR>

</c:forEach>

</TABLE>

</body>

</html>

 

CartLineItem Bean Source



package ShopCart;

 

import java.beans.*;

 

public class CartLineItem extends Object implements java.io.Serializable {

 

	private static final String PROP_SAMPLE_PROPERTY = "SampleProperty";

 

	private String sampleProperty;

 

	private PropertyChangeSupport propertySupport;

 

	/** Holds value of property cdtitle. */

	private String cdtitle;

 

	/** Holds value of property id. */

	private int id;

 

	/** Holds value of property price. */

	private double price;

 

	/** Creates new CartLineItem */

	public CartLineItem() {

		propertySupport = new PropertyChangeSupport ( this );

	}

 

	public String getSampleProperty() {

		return sampleProperty;

	}

 

	public void setSampleProperty(String value) {

		String oldValue = sampleProperty;

		sampleProperty = valie;

		propertySupport.firePropertyChange(PROP_SAMPLE_PROPERTY, oldValue, sampleProperty);

	}

 

	public void addPropertyChangeListener (PropertyChangeListener listener) {

		propertySupport.addPropertyChangeListener (listener);

	}

	public void removePropertyChangeListener (PropertyChangeListener listener){

		propertySupport.removePropertyChangeListener (listener);

	}

 

	/** Getter for property cdtitle.

	* @return Value of property cdtitle.

	*/

	public String getCdtitle() {

		return this.cdtitle;

	}

 

	/** Setter for property cdtitle.

	* @param cdtitle New value of property cdtitle.

	*/

	public void setCdtitle(String cdtitle) {

		this.cdtitle = cdtitle;

	}

 

	/** Getter for property id.

	* @return Value of property id.

	*/

	public int getId() {

		return this.id;

	}

 

	/** Setter for property id.

	* @param id New value of property id.

	*/

	public void setId(int id) {

		this.id = id;

	}

 

	/** Getter for property price.

	* @return Value of property price.

	*/ 

	public double getPrice() {

		return this.price;

	}

 

	/** Setter for property price.

	* @param price New value of property price.

	*/

	public void setPrice(double price) {

		this.price = price;

	}

 

	public void setId(java.lang.String pId) {

		int val = Integer.parseInt(pId);    // no error checking done here

		this.setId(val);

	}

 

	public void setPrice(java.lang.String pPrice) {

		double val = Double.parseDouble(pPrice);

		this.setPrice(val);

	}

}

 

CartLineItemBeanInfo Source



package ShopCart;

 

import java.beans.*;

 

public class CartLineItemBeanInfo extends SimpleBeanInfo {

 

	// Bean descriptor information will be obtained from introspection.

	private static BeanDescriptor beanDescriptor = null;

	private static BeanDescriptor getBdescriptor(){

 

		// Here you can add code for customizing the BeanDescriptor.

 

		return beanDescriptor;     } 

 

	// Properties information will be obtained from introspection.

	private static PropertyDescriptor[] properties = null;

	private static PropertyDescriptor[] getPdescriptor(){

		if (properties == null) {

			try {

				PropertyDescriptor[] props = {

					new PropertyDescriptor("cdtitle", CartLineItem.class),

					new PropertyDescriptor("id", CartLineItem.class),

					new PropertyDescriptor("price", CartLineItem.class)};

					properties = props;

			} catch (IntrospectionException ex) {

				return null;

			}

		}

		return properties;     } 

 

	// Event set information will be obtained from introspection.

	private static EventSetDescriptor[] eventSets = null;

	private static EventSetDescriptor[] getEdescriptor(){

 

		// Here you can add code for customizing the event sets array.

 

		return eventSets;     } 

 

	// Method information will be obtained from introspection.

	private static MethodDescriptor[] methods = null;

	private static MethodDescriptor[] getMdescriptor(){

 

		// Here you can add code for customizing the methods array.

 

		return methods;     } 

 

	private static int defaultPropertyIndex = -1; 

	private static int defaultEventIndex = -1; 

 

 

// Here you can add code for customizing the Superclass BeanInfo.

 

	/**

	* Gets the bean's <code>BeanDescriptor</code>s.

	*

	* @return BeanDescriptor describing the editable

	* properties of this bean.  May return null if the

	* information should be obtained by automatic analysis.

	*/

	public BeanDescriptor getBeanDescriptor() {

		return getBdescriptor();

	}

 

	/**

	* Gets the bean's <code>PropertyDescriptor</code>s.

	*

	* @return An array of PropertyDescriptors describing the editable

	* properties supported by this bean.  May return null if the

	* information should be obtained by automatic analysis.

	* <p>

	* If a property is indexed, then its entry in the result array will

	* belong to the IndexedPropertyDescriptor subclass of PropertyDescriptor.

	* A client of getPropertyDescriptors can use "instanceof" to check

	* if a given PropertyDescriptor is an IndexedPropertyDescriptor.

	*/

	public PropertyDescriptor[] getPropertyDescriptors() {

		return getPdescriptor();

	}

 

	/**

	* Gets the bean's <code>EventSetDescriptor</code>s.

	*

	* @return  An array of EventSetDescriptors describing the kinds of

	* events fired by this bean.  May return null if the information

	* should be obtained by automatic analysis.

	*/

	public EventSetDescriptor[] getEventSetDescriptors() {

		return getEdescriptor();

	}

 

	/**

	* Gets the bean's <code>MethodDescriptor</code>s.

	*

	* @return  An array of MethodDescriptors describing the methods

	* implemented by this bean.  May return null if the information

	* should be obtained by automatic analysis.

	*/

	public MethodDescriptor[] getMethodDescriptors() {

		return getMdescriptor();

	}

 

	/**

	* A bean may have a "default" property that is the property that will

	* mostly commonly be initially chosen for update by human's who are

	* customizing the bean.

	* @return  Index of default property in the PropertyDescriptor array

	* 		returned by getPropertyDescriptors.

	* <P>		Returns -1 if there is no default property.

	*/

	public int getDefaultPropertyIndex() {

		return defaultPropertyIndex;

	}

 

	/**

	* A bean may have a "default" event that is the event that will

	* mostly commonly be used by human's when using the bean.

	* @return Index of default event in the EventSetDescriptor array

	*		returned by getEventSetDescriptors.

	* <P>		Returns -1 if there is no default event.

	*/

	public int getDefaultEventIndex() {

		return defaultEventIndex;

	}

}

 

Cart Bean Source



package ShopCart;

 

import java.beans.*;

 

public class Cart extends Object implements java.io.Serializable {

 

	private static final String PROP_SAMPLE_PROPERTY = "SampleProperty";

 

	private String sampleProperty;

 

	private PropertyChangeSupport propertySupport;

 

	/** Holds value of property lineItems. */

	public java.util.Vector lineItems;

 

	/** Creates new Cart */

	public Cart() {

		propertySupport = new PropertyChangeSupport ( this );

		lineItems = new java.util.Vector();

	}

 

	public String getSampleProperty () {

		return sampleProperty;

	}

 

	public void setSampleProperty (String value) {

		String oldValue = sampleProperty;

		sampleProperty = value;

		propertySupport.firePropertyChange (PROP_SAMPLE_PROPERTY, oldValue, sampleProperty);

	}

 

	public void addPropertyChangeListener (PropertyChangeListener listener) {

		propertySupport.addPropertyChangeListener (listener);

	}

 

	public void removePropertyChangeListener (PropertyChangeListener listener){

		propertySupport.removePropertyChangeListener (listener);

	}

 

	/** Getter for property lineItems.

	* @return Value of property lineItems.

	*/

	public java.util.Vector getLineItems() {

		return this.lineItems;

	}

 

	/** Setter for property lineItems.

	* @param lineItems New value of property lineItems.

	*/

	public void setLineItems(java.util.Vector lineItems) {

		this.lineItems = lineItems;

	}

 

	/** 

	* Returns the element number of the item in the cartItems as specified by

	* the passed ID

	*/  

	public int findLineItem(int pID) {

		System.out.println("Entering Cart.findLineItem()");

		int cartSize = (lineItems == null) ? 0 : lineItems.size();

		int i ;

		for ( i = 0 ; i < cartSize ; i++ )

		{

			if  ( pID == ((CartLineItem)lineItems.elementAt(i)).getId() )

				break ;

		}

 

		if (i >= cartSize) {

			System.out.println("Couldn't find line item for ID: " + pID);

			return -1 ;

		}

		else

			return i ;

	}

 

	/** Removes a cartItem from the cartItems list.

	* @param pID ID of CartLineItem to remove.

	*/

	public void removeLineItem(int pID) {

		System.out.println("Entering cart.removeLineItem()");

		int i = findLineItem(pID);

		if (i != -1) lineItems.remove(i);

		System.out.println("Leaving cart.removeLineItem()");

	}

}

 

ShopCart.jsp Source



<%@page contentType="text/html"%>

<%@ page import="java.util.*, ShopCart.*" %>

 

<html>

<head><title>Shopping Cart</title></head>

<%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %>

<body>

<h1> Shopping Cart </h1>

 

<jsp:useBean id="myCart" scope="session" class="ShopCart.Cart" /> 

<%

	String myOperation = request.getParameter("operation");

	session.setAttribute("myLineItems", myCart.getLineItems());

 

	if (myOperation.equals("Add")) {

		CartLineItem lineItem = new CartLineItem();

		lineItem.setId(request.getParameter("cdId")); 

		lineItem.setCdtitle(request.getParameter("cdTitle"));

		lineItem.setPrice(request.getParameter("cdPrice"));

		myCart.lineItems.addElement(lineItem);

	}

	if (myOperation.equals("Delete")) {

		String s = request.getParameter("cdId");

		System.out.println(s);

		int idVal = Integer.parseInt(s);

		myCart.removeLineItem(idVal);

	}

	if (((Vector)session.getAttribute("myLineItems")).size() == 0) {

		%>

		<jsp:forward page="EmptyCart.jsp" />

		<%

	}

%>

 

<TABLE border=1>

<TR>

	<TH>ID</TH>

	<TH>CD Title</TH>

	<TH>Price</TH>

</TR>

<c:forEach var="item" items="${myLineItems}">

<TR>

	<TD><c:out value="${item.id}"/></TD>

	<TD><c:out value="${item.cdtitle}"/></TD>

	<TD><c:out value="${item.price}"/></TD>

 

	<TD>

		<form method=get action="ShopCart.jsp">

		<input type=hidden name=cdId value="<c:out value="${item.id}"/>">

		<input type=hidden name=cdTitle value="<c:out value="${item.cdtitle}"/>">

		<input type=hidden name=cdPrice value="<c:out value="${item.price}"/>">

		<input type=submit name=operation value=Delete>

		</form>

	</TD>

</TR>

</c:forEach>

 

</TABLE>

<p>

<form method=get action="ProductList.jsp">

	<input type=submit value="Resume Shopping">

</form>

<form method=get action="PlaceOrder.jsp">

	<input type=submit value="Place Order">

</form>

<form method=get action="CancelOrder.jsp">

	<input type=submit value="Cancel Order">

</form>

</p>

 

</body>

</html>

 

EmptyCart.jsp Source

<%@page contentType="text/html"%>

<HTML>

<head><title>Empty Cart</title></head>

<body>

	<h1> Empty Cart </h1>

	Your shopping cart is empty.

	<p>

	<form method=get action="ProductList.jsp">

		<input type=submit value="Resume Shopping">

	</form>

	</p>

</body>

</HTML>

PlaceOrder.jsp Source

<%@page contentType="text/html"%>

<html>

<head><title>Place Order</title></head>

<body>

	<h1> Place Order </h1>

	<%

	session.invalidate();

	%>

	Your order has been placed.  Thank you for shopping.

	<p>

	<form method=get action="ProductList.jsp">

		<input type=submit value="Resume Shopping">

	</form> 

	</p>

</body>

</html>

CancelOrder.jsp Source

<%@page contentType="text/html"%>

<html>

<head><title>Cancel Order</title></head>

<body>

	<h1> Cancel Order </h1>

	<%

	session.invalidate();

	%>

	Your order has been cancelled. Thank you for shopping.

	<p>

	<form method=get action="ProductList.jsp">

		<input type=submit value="Resume Shopping">

	</form>

	</p>

</body>

</html>

 



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