I am developing a sample JSR-168 Portlet using Tapestry 4.0 for deployment to Websphere Portal 5.0. The jre for Portal 5 is IBM's 1.3.1 jre. When I run the portlet I get a ClassNotFoundException for java.util.IdentityHashMap. This is of course because IdentityHashMap was not introduced until jdk 1.4.
Is it true that Tapestry 4.0 requires at least jre 1.4? I ask this because the dependencies page states 'Tapestry is expressly designed to be source compatible with JDK 1.3 and Servlet API 2.2'. I am not sure if this statement was intended to refer to Tapestry 4.0. Has anyone had success with Tapestry and Websphere Portal under version 5.1? Ryan
