Examples of org.eclipse.persistence.descriptors.partitioning.PartitioningPolicy

Package org.eclipse.persistence.descriptors.partitioning

Examples of org.eclipse.persistence.descriptors.partitioning.PartitioningPolicy

org.eclipse.persistence.descriptors.partitioning.PartitioningPolicy
PUBLIC: A PartitioningPolicy 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.
If multiple partitions are used to process a single transaction, JTA should be used for proper XA transaction support. @author James Sutherland @since EclipseLink 2.2

            QueryKey queryKey = (QueryKey)queryKeys.next();
            queryKey.initialize(this);
        }


        if (getPartitioningPolicyName() != null) {
            PartitioningPolicy policy = session.getProject().getPartitioningPolicy(getPartitioningPolicyName());
            if (policy == null) {
                session.getIntegrityChecker().handleError(DescriptorException.missingPartitioningPolicy(getPartitioningPolicyName(), this, null));
            }
            setPartitioningPolicy(policy);
        }

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     */  
    protected void updatePartitioning(Map m, ClassLoader loader) {
        // Partitioning
        String partitioning = getConfigPropertyAsStringLogDebug(PersistenceUnitProperties.PARTITIONING, m, this.session);
        if (partitioning != null) {
            PartitioningPolicy partitioningPolicy = this.session.getProject().getPartitioningPolicy(partitioning);
            if (partitioningPolicy == null) {
                throw DescriptorException.missingPartitioningPolicy(partitioning, null, null);
            }
            this.session.setPartitioningPolicy(partitioningPolicy);
        }

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                super.preInitialize(session);
            }
        }


        if (getPartitioningPolicyName() != null) {
            PartitioningPolicy policy = session.getProject().getPartitioningPolicy(getPartitioningPolicyName());
            if (policy == null) {
                session.getIntegrityChecker().handleError(DescriptorException.missingPartitioningPolicy(getPartitioningPolicyName(), null, this));
            }
            setPartitioningPolicy(policy);
        }

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