1. WEB SERVICES
OrangeScapeTechnologies
Write Once, Cloud Anywhere.

2. Ordering at a restaurant
3. What is Web Service?
Application Programming Interfaces (API)
Allows different application from different sources to communicate
Integration of Web application include standards:
XML - Extensible Markup Language
SOAP - Simple Object Access Protocol
WSDL - Web Services Description Language
UDDI - Universal Discovery Description and Integration
4. Why Web Service?
Interoperability among distributed applications diverse hardware & software
Accessibility of applications through firewalls using Web protocols
Cross-platform, cross-language data model (XML)
5. Calling a Web service diagram
6. Web services framework
7. UDDI
UDDI defines the operation of a service registry:
Data structures for registering
SOAP Access API
Rules for the operation of a global registry
businessEntity
businessEntity
businessEntity
Rosetta-Net
businessService
businessService
BASDA
Simple.Buy
Schemas,
Interchange specification
bindingTemplate
bindingTemplate
InstanceDetails
InstanceDetails
categoryBag
SIC CODE
NAICS
keyedReference
keyedReference
identifierBag
DUNS Numbers
keyedReference
keyedReference
Thomas Registry ID
Web Service
8. WSDL
Provides functional description of network services:
IDL description
Protocol and deployment details
Platform independent description.
Extensible language.
Used in combination of XML & SOAP
Service
Port
(e.g. http://host/svc)
Port
Binding
(e.g. SOAP)
Binding
portType
operation(s)
ageinMes
outMessage
9. Structure of WSDL
definition of types........ definition of a message.... definition of a port....... definition of a binding....

10. SOAP
Relies on XML for messaging
Messaging framework:
SOAP processing model
SOAP extensibility mode
SOAP underlying protocol binding
SOAP message construct
11. SOAP format
xmlns="http://schemas.xmlsoap.org/soap/envelope/">
< SOAP-ENV:Header>
...
SOAP-ENV:Header>
< SOAP-ENV:Body>
...
SOAP-ENV:Body>
...
SOAP-ENV: Envelope>
12. Architecture
13. Style of use
14. RPC
Remote Procedure Call
First web service tools
Basic unit- WSDL
Tightly coupled
15. SOA
Service Oriented Architecture
Basic unit of communication is message
Message-oriented service
Loosely coupled
16. REST
Representational State Transfer
Constrains interface to a set of well know operations
Described in context of HTTP
17. Web service , Mashups and APIs
Mashupsis any web feature that builds on services provided by other sites.
API contains classes and Interfaces just like a program.
A web service is a form of API (Application Programming Interface).
Embedding a URL to google maps, a webservice? a mashup? Or a API ?
18. Web Services in OrangeScape 3.0
19. Style of Use - SOAP
Expose a service
Easy generation of WSDL.
Default services.
User defined services.
Consume a Service
Easy to configure.
20. Consuming a Web Service
21. Style of use REST ( Representational State Transfer)
URL with HTTP methods( PUT,POST,GET &DELETE ).
Data is passed using query string.
22. Conclusion
The Web services framework is being defined, standardized and supported by the industry at a record pace.
Broad industry acceptance and standard compliance will make it ubiquitous.
Will bring an unprecedentedlevel of interoperability toWeb applications.
Integration with any application is now very easy with OrangeScapes web services.
The benefits of Web services, however, are not limited to the Web!
23. Questions..
24. Thank you