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JPA 2 Annotations
JPA defines dozens of annotations that can be divided into the following groups:
Annotations for JPA aware classes:
Annotations for fields in JPA persistable classes:
Annotations for additional JPA configuration:
Annotations for JPA lifecycle event callbacks:
Java EE container annotations:
Many other JPA annotations are designated for Object Relational Mapping (ORM) JPA providers (for mapping between a relational database and an object model and for direct SQL queries):
These ORM annotations are silently ignored by ObjectDB.
This documentation page is derived (with some adjustments) from the open source JPA 2 RI (EclipseLink)
and is available under the terms of the Eclipse Public License, v. 1.0 and Eclipse Distribution License, v. 1.0.
and is available under the terms of the Eclipse Public License, v. 1.0 and Eclipse Distribution License, v. 1.0.
Object Relational Mapping (ORM) JPA 2 providers include Hibernate, EclipseLink, TopLink, OpenJPA and DataNucleus.
Object DB is not an ORM JPA implementation but an Object Database for Java with built in JPA 2 support.
Which JPA is Faster?
See a comparison of Hibernate, EclipseLink, OpenJPA, DataNucleus, MySQL, Postgres, Derby, HSQLDB, H2 Database, SQLite and ObjectDB
in the JPA Benchmark.
