Web Services on AIMS (FAO)

Web Services on AIMS (FAO)

• 1.
  Web Services in AIMS and Agrovoc work bench http://aims.fao.org
• 2.
  W3C (working group)definition A Web Service (also Webservice ) is defined by the W3C as "a software system designed to support interoperable machine-to-machine interaction over a network Web Services can convert your applications into Web-applications Web Services are published, found, and used through the Web
• 3.
  Web services platformelements SOAP (Simple Object Access Protocol) SOAP is an XML-based protocol to let applications exchange information over HTTP WSDL (Web Services Description Language) WSDL is an XML-based language for locating and describing Web services UDDI (Universal Description, Discovery and Integration) UDDI is a directory service where people can register and search for Web services
• 4.
  Web Services Architecture
• 5.
  Sending requests, gettingresults Waiting for requests (known location, known port) Data in XML format SOAP-based communication SOAP: Data in a well-defined XML format Transport over various protocols HTTP, SMTP are the most used, perhaps because they are firewall-friendly
• 6.
  XML Messaging UsingSOAP
• 7.
  Web Services Stack
• 8.
  A Web Serviceexample in Java SOAP-aware Servlet (e.g. Apache Axis) Any class processing the incoming requests (“business logic” Any class processing the incoming requests (“business logic” Any class processing the incoming requests (“business logic” Any class processing the incoming requests (“business logic” HTTP Server Servlet engine (e.g. Apache Tomcat) Sending requests, getting results