JRun 4 implements the latest specifications, from web applications to Enterprise JavaBeans. However, support for some functionality is being eliminated or phased out. The following table describes some of these deprecated features:
Function
Description
Presentation templates
Presentation templates (THTML files) were HTML-based server-side scripting files that let you apply a consistent look and feel to HTML applications.
Server-Side Includes (SSI)
Server-Side Includes (SSIs) are no longer supported in JSPs. You must change <servlet> and <include> tags to jsp:include actions or include directives.
SSI taglets
SSI taglets provided a way to call a servlet through a tag, allowing a one-to-one naming convention between a taglet and the servlet that it represented.
Servlet chaining
JRun 4 does not support servlet chaining using comma-separated lists. To achieve equivalent functionality, implement chains as filters.
ClusterCATS
The final release of ClusterCATS HTTP-based load balancing and failover software is available at http://www.macromedia.com.
JavaScript
JRun does not support non-Java languages, including JavaScript, in JSP page directive language parameters.
