Tools are structurally organized slightly different for Sakai 2.2. For a tool called "tool-name":
tool-name tool-name-api api src/java/org/sakaiproject/tool-name/api src/java/org/sakaiproject/tool-name/cover tool-name-impl impl src/bundle src/java/org/sakaiproject/tool-name/impl src/sql hsqldb mysql oracle pack /src/webapp/WEB-INF/components.xml tool-name-tool tool src/bundle src/java/org/sakaiproject/tool-name/tool src/webapp
An extra level of directory structure has been added before the src directory. Also notice the consistency of identify apis, impls, covers, and tool code. Impl is now preferred to component, which avoids confusion with the component manager, among other things.