com.bigdata.bop.join

Interface IHashJoinUtilityFactory

All Superinterfaces:

Serializable

public interface IHashJoinUtilityFactory
extends Serializable

Interface for the factory pattern to create a IHashJoinUtility.

Version:

$Id$

Author:

Olaf Hartig

See Also:

(by using such a factory as an annotation of {@link HashIndexOpBase} it becomes possible to get rid of the two earlier subclasses of {@link HashIndexOp} (namely, HTreeHashIndexOp and JVMHashIndexOp) which imposed the duplication of code)

Method Summary

Methods

Modifier and Type	Method and Description
IHashJoinUtility	create(BOpContext<IBindingSet> context, INamedSolutionSetRef namedSetRef, PipelineOp op, JoinTypeEnum joinType) Return an instance of the IHashJoinUtility.

Method Detail

create

IHashJoinUtility create(BOpContext<IBindingSet> context,
                      INamedSolutionSetRef namedSetRef,
                      PipelineOp op,
                      JoinTypeEnum joinType)

Return an instance of the IHashJoinUtility.

Parameters:

context - The BOpEvaluationContext

namedSetRef - Metadata to identify the named solution set.

op - The operator whose annotation will inform the construction of the hash index.

joinType - The type of join.