org.eclipse.persistence.annotations
Annotation Type Partitioning

@Target(value={TYPE,METHOD,FIELD})
@Retention(value=RUNTIME)
public @interface Partitioning

A Partitioning is used to partition the data for a class across multiple difference databases or across a database cluster such as Oracle RAC. Partitioning can provide improved scalability by allowing multiple database machines to service requests. This annotation configures a custom PartitioningPolicy.

If multiple partitions are used to process a single transaction, JTA should be used for proper XA transaction support.

Partitioning can be enabled on an Entity, relationship, query, or session/persistence unit. Partition policies are globally named to allow reuse, the partitioning policy must also be set using the @Partitioned annotation to be used.

See Also:

Partitioned, PartitioningPolicy

Author:

James Sutherland

Since:

EclipseLink 2.2

Required Element Summary

java.lang.String	name The name of the partition policy, names must be unique for the persistence unit.
java.lang.Class<? extends PartitioningPolicy>	partitioningClass (Required) Full package.class name of a subclass of PartitioningPolicy.

Element Detail

name

public abstract java.lang.String name

The name of the partition policy, names must be unique for the persistence unit.

partitioningClass

public abstract java.lang.Class<? extends PartitioningPolicy> partitioningClass

(Required) Full package.class name of a subclass of PartitioningPolicy.