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.
Always mention your JDev version (check out this announcement : https://forums.oracle.com/forums/ann.jspa?annID=56).
Can you check out the ViewController project properties and see if the ADF Data Visualization library added under JSP Tag Libraries section? If not, try adding it and see if it resolves the issue.
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.
I have resolved the problem. I add the ADF Data Visualization library under Facelets Tag Libraries in project properties, then the problem solved. Thank you very much for your help.