35 words
isMember(elem, collection) - JPA CriteriaBuilder's method
Methodjavax.persistence.criteria.CriteriaBuilder
Predicate isMember(
Expression<E> elem,
Expression<C> collection
)
Create a predicate that tests whether an element is
a member of a collection.
If the collection is empty, the predicate will be false.
- Parameters:
elem- element expressioncollection- expression
- Returns:
- is-member predicate
- 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.
