I am new to ADF. I create a Java EE Web Application and EJB Diagram (JPA/EJB 3.0) as the demo shows( http://download.oracle.com/otn_hosted_doc/jdeveloper/11gdemos/JDevExperience/JDevExperience112flv.html). But when I try to create a graph, I cannot find the selection. Now I do not know why this probelm exist. Please help me. Thank you.
the graph should be created in the ViewController project, not the EJB model. If you create a Java EE application using the template provided by JDeveloper then you should have a ViewController project that has ADF Faces and DVT configured.