Web Services
  Home arrow Web Services arrow Page 3 - Orchestrating Web Services
Dev Articles Forums 
ADO.NET  
Apache  
ASP  
ASP.NET  
C#  
C++  
ColdFusion  
COM/COM+  
Delphi-Kylix  
Design Usability  
Development Cycles  
DHTML  
Embedded Tools  
Flash  
Graphic Design  
HTML  
IIS  
Interviews  
Java  
JavaScript  
MySQL  
Oracle  
Photoshop  
PHP  
Reviews  
Ruby-on-Rails  
SQL  
SQL Server  
Style Sheets  
VB.Net  
Visual Basic  
Web Authoring  
Web Services  
Web Standards  
XML  
Mobile Linux 
App Generation ROI 
IBM® developerWorks 
Weekly Newsletter
 
Developer Updates  
Free Website Content 
 RSS  Articles
 RSS  Forums
 RSS  All Feeds
Write For Us Get Paid 
Request Media Kit
Contact Us 
Site Map 
Privacy Policy 
Support 
 USERNAME
 
 PASSWORD
 
 
  >>> SIGN UP!  
  Lost Password? 
WEB SERVICES

Orchestrating Web Services
By: Sams Publishing
  • Search For More Articles!
  • Disclaimer
  • Author Terms
  • Rating: 5 stars5 stars5 stars5 stars5 stars / 1
    2006-08-03

    Table of Contents:
  • Orchestrating Web Services
  • Two-Level Programming Model
  • SkatesTown Requirements
  • Business Process Execution Language for Web Services

  • Rate this Article: Poor Best 
      ADD THIS ARTICLE TO:
      Del.ici.ous Digg
      Blink Simpy
      Google Spurl
      Y! MyWeb Furl
    Email Me Similar Content When Posted
    Add Developer Shed Article Feed To Your Site
    Email Article To Friend
    Print Version Of Article
    PDF Version Of Article
     
     
    ADVERTISEMENT


    Orchestrating Web Services - SkatesTown Requirements


    (Page 3 of 4 )

    SkatesTown's business has grown over time, and the Web services it provides have become increasingly complex. The time has come to break up hard-wired service implementations into more fine-grained and manageable pieces. Processes expressed in a business process language can be changed more easily, which gives SkatesTown more flexibility and the agility to quickly react to changing business requirements.

    Up to this point, SkatesTown has offered Web services that allow customers to submit purchase orders. These are now extended with a new service that lets customers cancel running purchase order requests.

    Whenever SkatesTown receives purchase order requests, it initiates subsequent processing steps before a response is returned to the customer. These steps include SkatesTown-internal processing such as order request validation, stock management, delivery, and external interactions with the supplier.

    During processing of a purchase order, three parties in different roles are participating in SkatesTown's overall business process:

    • The customer, acting as the buyer. The customer may submit order requests and may now in addition cancel orders.

    • SkatesTown itself, acting as the seller. The purchase order process that receives a customer order interacts with internal applications and optionally with services provided by a supplier.

    • The supplier. When SkatesTown can't fulfill a purchase order because it runs out of stock, an additional interaction with the supplier is initiated in order to replenish the item(s).

    Figure 12.1 provides a high-level outline of SkatesTown's overall business process. Interactions with the business partners are indicated by lanes that show, from left to right, the communication with the customer, within SkatesTown itself, and with the supplier, respectively.

    Figure 12.1  Outline of SkatesTown's purchase order process

    We'll now examine more details of BPEL and give some example snippets for important elements of WSDL interfaces and BPEL processes. Finally, we'll explain how SkatesTown implements its business process with BPEL.

    More Web Services Articles
    More By Sams Publishing


       · This article is an excerpt from the book "Building Web Services with Java: Making...
     

    Buy this book now. This article is excerpted from chapter 12 of Building Web Services with Java: Making sense of XML, SOAP, WSDL, and UDDI, written by Steve Graham et al. (Sams; ISBN: 0672326418). Check it out today at your favorite bookstore. Buy this book now.

    WEB SERVICES ARTICLES

    - Safety, Idempotence, and the Resource-Orient...
    - The Resource-Oriented Architecture in Action
    - Features of the Resource-Oriented Architectu...
    - The Resource-Oriented Architecture
    - Getting Started with Flex
    - Automated Billing and Faxing for the Web
    - An Introduction to Web Services
    - The Foundations of Web Services: From Novice...
    - Web Services Reengineering: Finishing Touches
    - Fault Handling with Web Services
    - Flow and Web Services
    - Process Lifecycles and Web Services
    - Business Processes and Web Services
    - Orchestrating Web Services
    - Notifications and Resources in the WS-Resour...







    © 2003-2009 by Developer Shed. All rights reserved. DS Cluster 4 Hosted by Hostway
    For more Enterprise Application Development news, visit eWeek