Oracle has released version 2.2 of the Java Persistence standard (JPA). This release updates Java EE 8 to use all the benefits of Java 8.

To quickly learn and understand Java Persistence API development, the best option is to eschew all the peripheral technologies and put together a minimalistic JPA and Hibernate development environment ...

JPA and Hibernate enum mapping The Java enum, introduced in Java 5, will map to the underlying database without any intervention. The JPA framework, be it Hibernate or Toplink or DataNucleus, will ...

Every JPA entity has a primary key, but some entities have more than one value as their primary key. In this case, you need to use a composite key. This Java tip introduces you to using composite ...

Order has a List of OrderPosition and OderPosition has the attribute oid. oid is @Id attribute of type long. Issueing this query results in an OpenJPA Exception and i really dont want to use some ...

java.lang.IllegalArgumentException: org.springframework.data.jpa.repository.support.CrudMethodMetadata referenced from a method is not visible from class loader ...