org.eclipse.persistence.annotations

public @Interface Partitioning

Annotations

@Target:TYPE, METHOD, FIELD
@Retention:RUNTIME

Imports

java.lang.annotation.Retention, .Target, org.eclipse.persistence.descriptors.partitioning.PartitioningPolicy

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.

Author: James Sutherland
Since: EclipseLink 2.2
See Also: Partitioned, org.eclipse.persistence.descriptors.partitioning.PartitioningPolicy

Method Summary

Modifier and Type	Method and Description
public String	name() The name of the partition policy, names must be unique for the persistence unit.
public Class<? extends PartitioningPolicy>	partitioningClass() (Required) Full package.class name of a subclass of PartitioningPolicy.

Inherited from java.lang.annotation.Annotation:: annotationType equals hashCode toString

Method Detail

name	back to summary
public String name() The name of the partition policy, names must be unique for the persistence unit.

partitioningClass	back to summary
public Class<? extends PartitioningPolicy> partitioningClass() (Required) Full package.class name of a subclass of PartitioningPolicy.