About performance

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Consulting and Training

... Consulting Facing a migration project? Performance issues with your current persistence architecture / framework? ... in depth from the very basics up to advanced topics, performance tuning and production tools. This course does not focus on a ...

 
forum_thread

Internal objectdb error when execute a flush

We get an internal objectdb error, when we execute a flush. Why? What's wrong? It performs with version objectdb-2.6.4_04. It does not perform with version objectdb-2.6.6_04.   #1 2016-02-16 13:48 We get an internal objectdb error, when we execute a flush. Why? What's wrong? It performs wi ...

 
api-jpa

javax.persistence.criteria.Root

A root type in the from clause.(Interface of JPA)

 
api-jpa

javax.persistence.criteria.ListJoin

The ListJoin interface is the type of the result of joining to a collection over an association or element collection that has been specified as a java.util.List.(Interface of JPA)

 
api-jpa

javax.persistence.criteria.Predicate

The type of a simple or compound predicate: a conjunction or disjunction of restrictions.(Interface of JPA)

 
api-jpa

javax.persistence.criteria.Expression

Type for query expressions.(Interface of JPA)

 
api-jpa

javax.persistence.criteria.PluralJoin

The PluralJoin interface defines functionality that is common to joins to all collection types.(Interface of JPA)

 
api-jpa

javax.persistence.criteria.CollectionJoin

The CollectionJoin interface is the type of the result of joining to a collection over an association or element collection that has been specified as a java.util.Collection.(Interface of JPA)

 
api-jpa

javax.persistence.criteria.CriteriaBuilder.In

Interface used to build in predicates.(Interface of JPA)

 
api-jpa

lock(entity, lockMode, properties)

Lock an entity instance that is contained in the persistence context with the specified lock mode type and with specified properties.(Method of javax.persistence.EntityManager)