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Idaho National Engineering and Environmental Laboratory What is a Framework? Web Service? Why do you need them? Wayne Simpson November.

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Presentation on theme: "Idaho National Engineering and Environmental Laboratory What is a Framework? Web Service? Why do you need them? Wayne Simpson November."— Presentation transcript:

1 Idaho National Engineering and Environmental Laboratory What is a Framework? Web Service? Why do you need them? Wayne Simpson November 5, 2003

2 Idaho National Engineering and Environmental Laboratory Purpose Show a solution to implement reusable components under a controlled environment Explain what is a “Framework” for components in Object Oriented (OO) Programming Explain the need for a Framework Explain the need for a Web Service

3 Idaho National Engineering and Environmental Laboratory Agenda Problem: Efficiency of Software Development History What is a Framework? Benefits of a Framework Implementing Framework: Web Services Cost Savings of a Framework/Web Service Demonstration

4 Idaho National Engineering and Environmental Laboratory Problem: Efficiency of Software Development Methods of sharing code –Coworkers’ code –Previous applications –Internet search Modifications cannot be implemented easily Workload remained the same with fewer resources Needed consistency in programming/naming conventions

5 Idaho National Engineering and Environmental Laboratory History Received object-oriented training Received UML training Studied existing framework Researched concept of web services Set proposed standards Developed four pilot projects Evaluated lessons learned Reset standards Built a number of components for framework Using framework for all new development activities Completing evaluation of web services interface

6 Idaho National Engineering and Environmental Laboratory What is a Framework? Framework is a group of components that work interactively with requests from other components or objects to generate a consistent output. Framework (Black Box) Java C# C++ VB.Net Presentation, business rules, database queries, etc Company business rules, standards, policies Object (GUI, XML, data, authentication, etc) Controlled Environment

7 Idaho National Engineering and Environmental Laboratory Example Framework (Black Box) Java C# C++ VB.Net Drop Down List, Select * from Users, log file Company business rules, standards, policies Render: Drop Down List of Users on a Web page or Window Application, recording any errors to the log file Procedural Application 100% complexity 75% complexity 25% complexity

8 Idaho National Engineering and Environmental Laboratory Benefits of a Framework Consistency across many platforms Better able to enforce standards and policy Better way to reuse components Lower skilled employee can perform work more efficiently Single point of change to a common interface Produce applications that are more robust, faster, stable and consistent

9 Idaho National Engineering and Environmental Laboratory Implementing Framework: Web Services A web service is a component that is presented as a URL that returns the desired information or objects Web services are built the same way as class objects Using a web service –Add a web reference –Add applicable XML documents –Call the web service through a URL, passing the necessary parameters –Process the information or object returned

10 Idaho National Engineering and Environmental Laboratory PresentationBusiness Objects Framework/ Web Service XML Production/ Development Framework and Web Service Environment Database

11 Idaho National Engineering and Environmental Laboratory Cost Savings of a Framework/Web Service Current Object Orient programming cost savings over procedural programming is 20% to 30% at the INEEL. Other companies are achieving 40% to 60% Framework can make up the difference and add another 30% cost savings

12 Idaho National Engineering and Environmental Laboratory Demonstration


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