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Pump Up Your Technical Knowledge
Listen and watch as industry luminaries bring you the latest on Java technologies
A simple lightweight approach to web services known as REST is finding favor among developers on all platforms. The REST approach to web services seems simple. Applications use the existing HTTP protocol to create, retrieve, update and delete resources by sending and receiving XML documents. Gone are the volumes of complex web services specifications such as SOAP, WSDL and UDDI. But, are REST based web services really so simple to develop? Without those complex specifications, how do you deal with the devilish details of specifying a web services protocol, enabling discovery and introspection? In this talk, we'll answer those questions by examining and implementing using Java technology in the REST-based Atom Publishing Protocol (APP) . The APP is an idea case study. It's reasonably-sized and it's significant, being one of the first REST-based protocols to become an Internet Engineering Task Force (IETF) standard. It's also useful. Although it was originally intended for blog publishing, it's generic and extensible enough to be used for wikis, content management and your own web applications. The session will start with a lightning quick introduction to REST followed by on overview of prior-art in blog publishing protocols. Next we'll take a long walk through the Atom protocol, illustrating the discussion with command-line interactions with a live Atom server and Java source code examples using the ROME feed utilities, JDOM XML parser and Apache HTTPClient. Along the way, we'll develop a simple but complete Atom client library. After that we'll take a quick look at an Atom client based on the Java Foundation Classes/Swing (JFC/Swing) API and the Atom protocol server implementation in Roller. We'll conclude with a short discussion of possible Atom protocol applications and futures.
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