com.bigdata.relation.rule

Interface IStarJoin<E>

All Superinterfaces:

BOp, Cloneable, IPredicate<E>, IPropertySet, Serializable

All Known Implementing Classes:

SPOStarJoin

Deprecated.

This is not currently supported. It was implemented, but we did not find improved performance for it.

public interface IStarJoin<E>
extends IPredicate<E>

Interface for a special type of IPredicate - the star join predicate. This type of predicate bypasses the normal join operation and does a binding set join of the matches to its star constraints from within the access path operation.

Author:

Mike Personick

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static interface	IStarJoin.IStarConstraint<E> Deprecated. A star constraint specifies the shape of the star join.

Nested classes/interfaces inherited from interface com.bigdata.bop.IPredicate

IPredicate.Annotations

Field Summary

Fields inherited from interface com.bigdata.bop.BOp

NOANNS, NOARGS

Method Summary

Methods

Modifier and Type	Method and Description
void	addStarConstraint(IStarJoin.IStarConstraint<E> constraint) Deprecated. Add a star constraint for this star join.
Iterator<IVariable>	getConstraintVariables() Deprecated. Returns an iterator over the variables used in this star join's constraints.
int	getNumStarConstraints() Deprecated. Return the number of star constraints.
Iterator<IStarJoin.IStarConstraint<E>>	getStarConstraints() Deprecated. Returns an iterator over this star join's constraints.

Methods inherited from interface com.bigdata.bop.IPredicate

asBound, asBound, asBound, equals, get, get, getAccessPathExpander, getAccessPathFilter, getIndexLocalFilter, getKeyOrder, getOnlyRelationName, getPartitionId, getRelationCount, getRelationName, getTimestamp, getVariableCount, getVariableCount, hashCode, isFullyBound, isOptional, isRemoteAccessPath, setArg, setBOpId, setPartitionId, setRelationName, toString, toString

Methods inherited from interface com.bigdata.bop.BOp

annotations, argIterator, args, arity, clone, getEvaluationContext, getId, getProperty, getRequiredProperty, isController, setProperty, toArray, toArray, toShortString, toString

Methods inherited from interface cutthecrap.utils.striterators.IPropertySet

getProperty

Method Detail

addStarConstraint

void addStarConstraint(IStarJoin.IStarConstraint<E> constraint)

Deprecated.

Add a star constraint for this star join.

Parameters:

constraint - the star constraint

getStarConstraints

Iterator<IStarJoin.IStarConstraint<E>> getStarConstraints()

Deprecated.

Returns an iterator over this star join's constraints.

Returns:

the star constraints iterator

getNumStarConstraints

int getNumStarConstraints()

Deprecated.

Return the number of star constraints.

Returns:

the number of star constraints

getConstraintVariables

Iterator<IVariable> getConstraintVariables()

Deprecated.

Returns an iterator over the variables used in this star join's constraints.

Returns:

the star constraints' variables iterator