http://krams915.blogspot.kr/2011/01/spring-mvc-3-hibernate-annotations.html
git://github.com/michaelisvy/hibernate-4-spring-3.1-samples.git
git://github.com/SpringSource/spring-data-jpa-examples.git https://github.com/SpringSource/spring-data-jpa-examples
custom value type
http://stackoverflow.com/questions/735732/mapping-enum-to-a-table-with-hibernate-annotation
git://github.com/SpringSource/spring-data-book.git
git://github.com/appoxy/simplejpa.git
http://docs.spring.io/spring-data/jpa/docs/current/reference/html/jpa.repositories.html#jpa.java-config