wood burning stoves*
The moose likes XML and Related Technologies and the fly likes About the Book Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login


Win a copy of Murach's Java Servlets and JSP this week in the Servlets forum!
JavaRanch » Java Forums » Engineering » XML and Related Technologies
Bookmark "About the Book" Watch "About the Book" New topic
Author

About the Book

William Brogden
Author and all-around good cowpoke
Rancher

Joined: Mar 22, 2000
Posts: 12756
    
    5
Java Developer's Guide to E-Commerce with XML and JSP
by Bill Brogden and Chris Minnick
Our plan for this book was to provide the typical Java developer with sufficient information on XML and the Java tools for manipulating XML that he or she could create e-commerce applications. We don't attempt to provide whole solutions that you just drop in to a web-site because every site has different requirements.
We observed that there were two things about XML that gave developers a lot of trouble. The complex rules for creating XML, and the process of deciding how to describe data within these rules. Therefore the first two chapters are devoted to these topics. Essentially, chapter one goes over the rules for creating XML and chapter two goes over the design decisions that you have to make when applying XML to a particular kind of data.
Creating a data set in XML that is large enough to demonstrate various programming techniques can be very time consuming. We provide an entire catalog for an imaginary on-line store on the CD so you can avoid this drudgery. Chapters three through six demonstrate how Java servlet and JSP technology can provide for searching and presenting these items, creating a shopping cart function and handling orders.
Given a particular data description in XML, the next big decision a developer has is whether or not to use the DOM or SAX approach. We provide several examples of both styles.
The DOM approach is indicated whenever you have data that is accessed frequently and that occupies a reasonable amount of memory, as with the product catalog. The SAX approach is indicated whenever you have data that can be quite bulky and is accessed infrequently.
In chapter seven we used both DOM and SAX to provide for administering a survey, recording, and analyzing the results. This is one of my favorite chapters because XML makes a great way to create the survey script. The DOM of the script stays in memory so running a new user through the survey takes very little computer power.
The results of the survey are of course recorded in XML, but the analysis is done using the SAX parser. This application is ideal for SAX for several reasons: only a single pass through the data is needed to gather statistics, analysis is not done very frequently, and it doesn't matter how large the accumulated response file gets.
I have some more information, including an example survey at this site:
http://www.lanw.com/books/javaxml/
I will post some more about other chapters later in the week.
Bill
Frank Carver
Sheriff

Joined: Jan 07, 1999
Posts: 6920
I notice that you use the somewhat clumsy DOM for all your internal models. Would you consider the lighter and more java-specific JDOM if you were writing this system again, or was there a reason you rejected it ?


Read about me at frankcarver.me ~ Raspberry Alpha Omega ~ Frank's Punchbarrel Blog
pascal betz
Ranch Hand

Joined: Jun 19, 2001
Posts: 547
hi,
is jsp covered for a beginner or should i consider another book ?
im new to both techniques and wondering if this is the book for me or not.
thanks
pascal
Nick Kellett
Greenhorn

Joined: May 01, 2001
Posts: 12
How much detail do you go into on the design decisions of the second chapter? I find it easy enough to understand XML's rules (your first chapter, I guess) but difficult to understand how and when to use XML. The way you demonstrate how to approach a problem using both the DOM and the SAX models seems pretty useful to me but I am a beginner at XML so would it be easy for me to follow along?
Frank Carver
Sheriff

Joined: Jan 07, 1999
Posts: 6920
I've read the book, and yes, it is easy to follow along. The choices between DOM and SAX, the development of DTDs, and the implementation of the code to do it all are very clearly explained and documented.
The book is very focussed on devlivering a particular peice of software (the example e-commerce system) and as a result seemed more "real" than many other books which skirt around the subject.
Nick Kellett
Greenhorn

Joined: May 01, 2001
Posts: 12
I took your survey twice - once stating that I was interested in XML, once not. Roughly what was going on behind the scenes to make the questions change?
Paul Stevens
Ranch Hand

Joined: May 17, 2001
Posts: 2823
Would a novice to XML need to get another book or does this go into enough depth to get an understanding.
Umesh Joglekar
Greenhorn

Joined: May 02, 2001
Posts: 16

Do you need any XML background or does the book assume you have no XML background but may have some background in Servlets and or JSP?
Andrew Shafer
Ranch Hand

Joined: Jan 19, 2001
Posts: 338

William,
Reading this thread gave me some questions about the book.
What level of experience/knowledge is assumed of the reader? in Java? Servlets/JSP? XML?
I would consider myself fairly capable with Java, very comfortable with servlets/JSP, and grasping the concept of XML (though not quite the application).
I'm not particularly interested in "ecommerce" but I am generally interested in XML/XSL, what do you think the book's biggest benefit would be for me?
Andrew


!_I_Know_Kung_Fu_!
Frank Carver
Sheriff

Joined: Jan 07, 1999
Posts: 6920
There is no introduction to java, so I guess you need to be familiar with Java and its use. It doesn't use any "fancy features" of java - it seems to be written for java 1.1.
XML (DOM, SAX and DTD) is introduced in some detail, as are the servlet and JSP APIs, so no particular XML knowledge is necessary, but it wouldn't hurt.
The bulk of the book walks through the implementation of a basic e-commerce site with a catalog, shopping cart, survey system, newsfeeds etc. using servlets, JSP and XML.
William Brogden
Author and all-around good cowpoke
Rancher

Joined: Mar 22, 2000
Posts: 12756
    
    5
I am going to start new Threads for the replys -
Bill
 
It is sorta covered in the JavaRanch Style Guide.
 
subject: About the Book
 
Similar Threads
Parsers
Anybody using XML for real?
SAX Dom parser
XML driven survey servlet
creating xml using sax