March 2002
Intermediate to advanced
280 pages
8h 36m
English
Content preview from Java Web ServicesBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.
Chapter 5. Web Services Description Language
In the previous two chapters, we talked extensively about SOAP and the structure it delivers to web services. Not surprisingly, the adoption of SOAP’s messaging formats brought about a need to describe operational information in an equally structured way. WSDL was introduced to address this need.
WSDL is an XML grammar for describing a web service as a collection of access endpoints[8] capable of exchanging messages in a procedure- or document-oriented fashion. A WSDL document is a recipe used to automate the details involved in application-to-application communication.
On one level, WSDL is not that different from CORBA IDL or Microsoft IDL. They are all used to define the interfaces (method signatures) and datatypes for a discreet piece of programming logic.
On another level, WSDL is an altogether different beast, offering a degree of extensibility that has no parallel in the IDL specification. This extensibility allows WSDL to be used to:
Describe endpoints and their messages, regardless of the message format or network protocol used to exchange them.
Treat messages as abstract descriptions of the data being exchanged.
Treat port types as abstract collections of a web services’ operations. A port type can then be mapped to a concrete protocol and data format.
If you are feeling a bit dazed after reading these bullet items, it’s just the WSDL specification talking! We’ll offer fewer “scientific” definitions as we go along; don’t let ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.