
Interactive Websites with Comet and DWR
In this session filmed during QCon London 2008, Joe Walker presents Comet, a long polling AJAX method used for updating the browser’s page, and DWR, a Java library for writing web sites using AJAX.

In this session filmed during QCon London 2008, Joe Walker presents Comet, a long polling AJAX method used for updating the browser’s page, and DWR, a Java library for writing web sites using AJAX.
InfoQ had the opportunity to talk with the DWR (Direct Web Remoting) project lead Joe Walker. He discussed the upcoming release of DWR 3.0 including major features, helpful features and fixes for developers, a time line and a look at the future of DWR.
There is a lot going on in the DWR world: DWR joining the Dojo Foundation; Joe Walker, creator of DWR, joining SitePen, Ltd. as Director of Support and Development; and an announcement of the features that are expected to be part of DWR 3.0.
Dr. Dobbs is currently featuring a case study of the Ajax framework selection process of a development team at T. Rowe Price. The article considers GWT, Dojo, Prototype/Scriptaculous, and Yahoo UI Library.
The DWR team has released version 2.0. Major feature additions include support for reverse Ajax allowing server state to be pushed to browser and Java 5 annotations.
Joe Walker has released the fourth release candidate of DWR 2.0. Significant changes include Guice support, security, and Reverse Ajax fixes. Final release is expected soon.

JSF, DWR, and Dojo are all popular technologies in their own right. Integrating them into a portal environment can prove an intimidating exercise however. This article looks at how one developer implemented such a solution using custom JSF components.

In this interview from QCon London 2008, InfoQ Chief Architect Alexandru Popescu discusses the architecture of InfoQ, integrating WebWork and DWR, Hibernate and JCR, Hibernate scalability, MySQL replication, the new InfoQ video streaming system, the video encoding process, site search, and future plans for InfoQ.

InfoQ spoke with Joe Walker at QCon London 2007 about the DWR toolkit. Walker discussed DWR 2.0 including new features such as details about 'reverse AJAX', the deal with TIBCO, DWR support in IDEs, the integration with Spring, future plans for DWR, and interesting applications of DWR from the very large to the very flashy.