wcf overview

WCf OverView

Wcf is part of SOAService side storyClientside neednot have to WCF

Client side Story

Client side Story

Could be Client or Server sideCould be Integrated with WCF

WCF and SOA

• Suppose you have a CRM System, Accounting System and Reporting System in place, you will think of creating a API layer for this Functionality.

• WCF is all about exposing the functionality over API layer (Service) defined by a contract.

• WCF is Buildup from Ground up level to be a first class SOA citizen.

Lets discuss that in SOA we have Little SOA and Big SOA

• Suppose we have a Agency Management System of a Insurance Company which is Busy in day to day activities, like providing certificates, issuing policies, keep track of customer for a particular customer on a particular Policy.

• There fore “Agency Management System ” that is small exe but in the backend it has big activities/functionality like Reporting System with a separate database, CRM System with a Separate Table etc.

Lets create a API layer for this Functionality, that’s is exposing the functionality overAPI layer defined by a contract. By hiding the crucial details.

Business Tier Components Cordinates the Functionality at Data Tier Level

All the details of access to table and all

Therefore we should have a Service that Isolates this Business Tier and Data Tier thatIs a single application system from another. And expose this a s unit over a Service Layer (which defines security, contract, policy of Communication) to Agency management System is Little SOA and to other applications of Business Partners etc. Over the net is Bigger SOA.

Scenarios/ Applications Where I can USE WCF

Here we have Message level Security

WCF- Interoperability and Integration

We are getting into the scenariowhere I have to look and think less At/on xml form in message more concentrate on features required

Client and Service

Client will choose one of the end point based on the Protocol to use

Host is Living for the Message to be receivedAnd the End Points are the entry Points

Explicit contract are Defined over the Service Contract

Component

Practicals

ClassLibrary

Host

Manually copy the meta data

Client

There is away to generate the Proxy (Meta Data Information) without hand Coding it, that’s via WSDL

Should be service descriptionLanguage.

For Http Protocol

When we say host.open(), it create/opens the channels for communication and the creates the Service Description , so at runtime information of the Protocols, what all End points are available . So it generates the WSDl document. And client use the same to create the Proxy.

The service Model Generates the Service Descriptionfile

You can mail this WSDL to Client and Ask client to use svcutil.exe tool,to generate the Proxy

Next

Keep this on therefore will have two endpoints

The end