57 words
fetch(attributeName) - JPA FetchParent's method
Methodjavax.persistence.criteria.FetchParent
Fetch<X,Y> fetch(
String attributeName
)
Create a fetch join to the specified attribute using an
inner join.
- Parameters:
attributeName- name of the attribute for the target of the join
- Returns:
- the resulting fetch join
- Throws:
IllegalArgumentException- if attribute of the given name does not exist
- 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.
