The web application deployment descriptor specifies a series of resources that are instantiated and configured based on the settings you provide. In web.xml, you are required to include the following resources:
The DTD declaration and web application name in your
web.xmlas you would for any other J2EE application.NucleusServlet, which is the servlet responsible for running Nucleus as a servlet.A
PageFilterthat starts the request-handling pipeline.A
<distributable/>tag, in order to enable session failover when running in a cluster. This tag is added automatically when you assemble your EAR using the–distributableflag.
In additional to these required resources, you can specify other Optional Resources (described later in this chapter) that the Oracle ATG Web Commerce platform provides. Most applications require site-specific resources.
