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Project 2: Web Services Composition and
Demonstration
Wei-Tek Tsai and Yinong Chen
Computer Science & Engineering Department
1
SOA-Based Recomposable Embedded Systems
Embedded Systems
Project 1
ServiceOriented
Enterprise
Service-Oriented
System Engineering
Project 2
Re-composable
Embedded
Systems
Robotics
EBusiness
Service-Oriented
Architecture
Modeling
Software
Simulation
Reliability
Hardware
Evaluation
Design
Testing
Bioinformatics
Infrastructure
Command
and
Control
Systems
2
Service-Oriented Computing Paradigm
Separation
Loosely coupled
Directory services
UDDI / WSDL / SOAP
ebXML / CPP
Ontology
Publishing
Search
Service brokers
Registry
 Found
GUI
 Find
Internet
Open Standards
Protocols
White page
Yellow page
Green page
 Publishing
Service providers
Application builder
 SOAP call
Applications
 Results
Application development platform
Specification language
Composition
Code generation
Service agents
Programming
languages:
C++, C#
Java
Computing service
development:
.Net
J2EE
Web and data service development
XML, RDF, OWL,
3
System Features
The project will create a Web Services-based application “Teaching Assistance”,
which allows:
•
•
•
•
Service providers to register new Web services;
Instructors to test questions and solutions into an ontology to form a semantic Web
Instructors to build test papers based on the existing Web services
Give a test online and have the test automatically graded
4
Teaching Assistance Ontology
TAO
565
240
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sol1 soln sol1 soln
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sol1 soln sol1 soln sol1 soln
...
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sol1 soln sol1 soln
5
Web Services Manipulating the Ontology
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addTreeNode(subRoot, name);
removeTreeNode(nodeName);
addTreeLeave(subRoot, name);
removeTreeLeave(leaveName);
selectLeave(leaveName);
takeTest(testName);
gradeTest(testName, grade);
enterGrade(roster, testName, grade);
sort(roster);
display(roster, range);
login(userName, pwd);
logout();
6
Application Building
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testPaper(subRoot, name);
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testGiving(testName);
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login(userName, pwd);
selectLeave(name1) … selectLeave(namen);
buildTest(testName);
logout();
login(userName, pwd);
takeTest(testName);
gradeTest(testName, grade);
enterGrade(roster, testName, grade);
logout();
reportGrade(roster, key1, key2, key3);
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login(userName, pwd);
sort(roster);
display(roster, range);
logout();
7
Task Allocation
Task
No
CSE423 Web Services Composition and Demonstration
Responsible
Working Platform
1
Learn .Net, C#,
A
Application builder
2
Use .Net and C# to create all necessary Graphic User Interfaces
A
Application builder
3
Learn .Net, WSDL and SOAP
B
Service Provider
4
Use .Net to wrap the programs into Web services (page 6)
B
Service Provider
5
Register the services to the UDDI service directory
B
Service Provider
6
Learn .Net, WSDL and SOAP
C
Application builder
7
Discover services in the UDDI service directory
C
Application builder
8
Use compose applications based on existing Web services (page 7)
C
Application builder
9
Testing and Integration
A, B, and C
Internet and PC
8
General References
Collection of sample Web services: http://www.xmethods.net/
IBM Course Ware: http://www.developer.ibm.com/us/en/university/scholars/courseware/
IBM Web service patterns: http://www-128.ibm.com/developerworks/patterns/
Fahey. “C# OpenGL Wrapper”.
http://www.colinfahey.com/opengl/csharp.htm
Terragen. “Terrain Generator”.
http://www.planetside.co.uk/
Lloyd. “C# Tutorial for Beginners”. 2004. http://www.csharphelp.com/archives2/archive402.html
-This website was a basic tutorial on C#.
“W3Schools: Learn XML.” 2005.
http://www.w3schools.com/xml/default.asp
-This website was a basic tutorial on XML
“Direct3D Tutorials” 2005.
http://www.two-kings.de/tutorials/d3d.html
-This site has tutorials on Direct3D basics
“Purple# - a shader-driven open source 3d game engine in C#” 2005.
http://www.bunnz.com/index.php
-This site has information on using Purple#
“GDI+ FAQ main index” 2005.
http://www.bobpowell.net/faqmain.htm
-This site has help for programming in GDI+
“MSDN Library” 2005.
http://msdn.microsoft.com/library/default.asp
-This site has help for programming in Visual Studios .Net
Download UDDI service directory:
.Net based: http://www.microsoft.com/downloads/details.aspx?FamilyID=9d467a69-57ff-4ae7-96eeb18c4790cffd&displaylang=en
Java-based: http://sourceforge.net/projects/soapuddi/
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