intermediate `@MappedSuperclass` failed to persist

intermediate `@MappedSuperclass` failed to persist

References

Reference NO 1

http://stackoverflow.com/questions/15198813/intermediate-mappedsuperclass-failed-to-persist

Reference NO 2

http://stackoverflow.com/questions/14773995/mappedsuperclass-and-namedqueries

Reference NO 3

http://www.doctrine-project.org/jira/browse/DDC-1156

Reference NO 4

https://groups.google.com/d/msg/querydsl/rpt9qu7fagk/BBuWk1n9t4wJ

Reference NO 5

http://wiki.eclipse.org/EclipseLink/Development/JPA_2.0/metamodel_api

Reference NO 6

http://en.wikibooks.org/wiki/Java_Persistence/Relationships

Reference NO 7

http://docs.oracle.com/cd/E13189_01/kodo/docs316/ref_guide_mapping_classmapping.html

Reference NO 8

http://www.krueckeberg.org/notes/d2.html