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ManyToOne.fetch - JPA annotation element
Annotation Elementjavax.persistence.ManyToOne
FetchType fetch
(Optional) Whether the association should be lazily
loaded or must be eagerly fetched. The EAGER
strategy is a requirement on the persistence provider runtime that
the associated entity must be eagerly fetched. The LAZY
strategy is a hint to the persistence provider runtime.
- Default value:
- javax.persistence.FetchType.EAGER
- 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.
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, PostgreSQL, Derby, HSQLDB, DB4O by Versant, H2 Database, SQLite and ObjectDB
in the JPA Benchmark.
