createEntityManager() - JPA EntityManagerFactory's method
Method
javax.persistence.EntityManagerFactory
EntityManager createEntityManager()
Create a new application-managed
EntityManager. This method returns a new
EntityManager instance each time it is invoked. The
isOpen method will return true on the returned instance.
- Returns:
- entity manager instance
- Throws:
-
IllegalStateException- if the entity manager factory has been closed
- Since:
- JPA 1.0
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.
ObjectDB is not an ORM JPA implementation but an Object Database for Java with built in JPA 2 support.
