90 words
isLoaded(entity) - JPA PersistenceUtil's method
Methodjavax.persistence.PersistenceUtil
boolean isLoaded(
Object entity
)
Determine the load state of an entity.
This method can be used to determine the load state
of an entity passed as a reference. An entity is
considered loaded if all attributes for which
FetchType.EAGER has been specified have been loaded.
The isLoaded(Object, String) method should be used to
determine the load state of an attribute.
Not doing so might lead to unintended loading of state.
- Parameters:
entity- whose load state is to be determined
- Returns:
- false if the entity has not been loaded, else true
- Since:
- JPA 2.0
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.
