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Principles of Service Orientation & Mid Term Review

Principles of Service Orientation & Mid Term Review. 605.702 Service Oriented Architecture Johns-Hopkins University Montgomery County Center, Fall 2007 Session 7, Lecture 6: October 23, 2007 Instructor: T. Pole. Session #7 Agenda. Required Reading for This Week

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Principles of Service Orientation & Mid Term Review

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  1. Principles of Service Orientation & Mid Term Review 605.702 Service Oriented ArchitectureJohns-Hopkins University Montgomery County Center, Fall 2007 Session 7, Lecture 6: October 23, 2007 Instructor: T. Pole

  2. Session #7 Agenda • Required Reading for This Week • Service Oriented Architecture Concepts Technology & Design (SOACTD) • Chapter 8: Principles of Service Orientation • Expert Service Oriented Architecture in C# 2005 • Chapter 5 Web Service Enhancements 3.0 • Today’s Presentation • Today’s Lecture • Class Web Site and SOAP “Server” • Completing Chapter SOACTD 8 • Mid Term Review • ESOAC# Chapter 5 • Assignment: Mid Term Take Home Exercise • Example Code: Consuming an existing service over the internet.

  3. Lecture • Class Web Site and SOAP “Server” • Lectures • Exercises • Sample Code • Schedule Page • SOACTD Chapter 8: Principles of Service Orientation • 8.1 Service Orientation and the Enterprise • 8.2 Anatomy of a Service Oriented Architecture • Mid Term Review • thru Chapter 7 and in class material • (e.g. VS 2005 .Net Web Service development) • Topics to review • Format of Mid Term • Mid Term Take Home Exercise • ESOAC# Chapter 5: Web Service Enhancements 3.0

  4. Class Web Site • Areopagus-soa.net/jhu_sia_f07/ • Alternative: areopagusso.web150.discountasp.net/jhu_soa_f07/ • Contents • Lectures • Schedule • Sample code and configuration examples • How To’s and other help • Exercises with solutions • Web Service “Server” • Starting next week, you will be able to upload and install your services on this server, which then can be reached from anywhere on the internet.

  5. SOA Ch 8: Principles of Service Orientation • 8.1 Service Orientation and the Enterprise • 8.2 Anatomy of a Service Oriented Architecture • 8.3 Common Principles of Service Orientation • 8.4 How Service Orienation Principles interrelate • 8.5 Service Orientation and Object Orientation • 8.6 Native Web Service Support for Service Orientation Principles

  6. Mid Term Review (1 of 3) • The Big Questions: • What is a web service? • What is a service oriented architecture? • What is SOA? (3.2.20) • What is a primitive SOA? • What is a contemporary SOA? • The terms/concepts • Common Characteristics of contemporary SOA (3.2) • Common Tangible benefits of SOA (3.4) • Pitfalls of SOA (3.5)

  7. Mid Term Review (2 of 3) • Relationships of SOA to… • XML (is used by SOA for…) • Standards (SOAP, UDDI, WSDL, etc.) • Past Architectures (C/S, 3-Tier, Distributed) • Object Orientation (4.3.5) • What is: • The WS-I Basic Profile • A Service Role (p. 113) • A Service Classification • A service composition • A service description (5.3) • A service operation

  8. Mid Term Review (3 of 3) • What are the parts of a: • SOAP Message (5.4) • MEP’s • Fire and Forget MEP • Publish and subscribe MEP • Of the WS-* extension collection • WS-Orchestration and WS-Choreography • WS-Addressing • WS-Security • WS-ReliableMessaging • WS-Eventing • WS-Policy

  9. Mid Term Exam Format • Multiple Choice (few of these) • Matching (several of these) • Fill in the blank (many of these, some of the blanks are words, and some are phrases or full sentences) • Essay (1 maybe 2) • Draw a picture (to design a solution or fix/alter a design; using the same notation as used in the case studies)

  10. ESOAC# Ch 5: Web Service Enhancements 3.0 • Overview of the WS- Specifications • WS- Specifications Covered in this Book • Introducing Web Service Enhancements (WCE) 3.0 • How WSE works with ASP.NET • Web Service access to the WSE API • Web Service Client Access to the WSE API • (next week) Install and Configure WSE

  11. Mid Term Take Home Exercise • Design a system, which will be an SOA for selling audio video recordings to retail stores. • Carefully follow the basic tenets of service orientation and SOA • Your service will allow retailers to: • Place orders for audio and video recordings. • Pay an invoice • Submit bank or credit card information so that an payments can be made on line • Check for available inventory (number available, next delivery date for items on back order, etc.) • Receive monthly invoices • Submit the following: • Using the notation in the book’s case studies draw your design for the your system, and the services at one retailer which will interact with you system. A legible hand drawing is just fine. • Describe the interaction between your system and a retailer, naming the services being used, and the contents of the messages being passed, for each of the following. You may use narrative and drawings to describe these. • A retailer checks your inventory before placing an order • A retailer places an order • A retailer receives a monthly invoice • A retailer submits payment information • A retailer pays monthly invoice • You do not need to write any code, but to help support your descriptions above, if you wish to you may submit code which defines the services either in C# .Net code, or in WSDL.

  12. Build a Consumer for an Existing Service. • Start up VS 2005 • File->New->Project • left side of dialog: • Languages->Visual C# • sub-type->Windows • top right of dialog: • Select->Windows Application • bottom of dialog: • pick a name • pick a location • optionally, if you want a new solution space • check the "create directory for solution" checkbox • give the solution a names • click OK • In the "Solution Explorer", click right on the "references" folder and select "add web reference" • type in the url: http://areopagus-soa.net-Testing_101807_b/Service.asmx • alternately: http://areopagusso.web150.discountasp.net/Testing_101807_b/Service.asmx • enter an appropriate "Web reference name:" • click "add reference" • Work with the service as usual. It has one operation: HelloWorld • Watch for notes from your fire wall and other security software • Next week: How to upload a provider service to the class web site.

  13. Schedule for Next Week • 10-30-07 Mid-Term Exam (open book, open notes, NO computers) Lecture 7 • The exam will be during the first hour • Lecture to follow • Required Reading (read before class) • SOA – Erl • Chapter 9 Service Layers • Chapter 10 Delivery Strategies • ESOAC# - Hassan • Chapter 3 Design Patterns for Building Message Oriented Web Services • Chapter 4 Deign Patters for Building Service Oriented Web Services • Lecture 7 • Service Layers, Delivery Strategies and SO Design Patterns • Assignments • Mid Term Exercise due

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