it.unibz.inf.ontop.iq.optimizer.impl.lj

Class CardinalityInsensitiveJoinTransferLJOptimizer.CardinalityInsensitiveTransformer

java.lang.Object

it.unibz.inf.ontop.iq.transform.impl.DefaultNonRecursiveIQTreeTransformer

it.unibz.inf.ontop.iq.optimizer.impl.lj.AbstractJoinTransferLJTransformer

it.unibz.inf.ontop.iq.optimizer.impl.lj.CardinalityInsensitiveJoinTransferLJOptimizer.CardinalityInsensitiveTransformer

All Implemented Interfaces:

IQTreeTransformer, IQTreeVisitingTransformer

Enclosing class:

CardinalityInsensitiveJoinTransferLJOptimizer

protected static class CardinalityInsensitiveJoinTransferLJOptimizer.CardinalityInsensitiveTransformer
extends AbstractJoinTransferLJTransformer

Nested Class Summary

Nested classes/interfaces inherited from class it.unibz.inf.ontop.iq.optimizer.impl.lj.AbstractJoinTransferLJTransformer

AbstractJoinTransferLJTransformer.DataNodeAndReplacement, AbstractJoinTransferLJTransformer.RenamingAndEqualities, AbstractJoinTransferLJTransformer.ReplaceNodeByTrueTransformer, AbstractJoinTransferLJTransformer.SelectedNode

Field Summary

Fields inherited from class it.unibz.inf.ontop.iq.optimizer.impl.lj.AbstractJoinTransferLJTransformer

optimizationSingletons, requiredDataNodeExtractor, rightProvenanceNormalizer, variableGenerator

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	CardinalityInsensitiveTransformer(IQTreeTransformer lookForDistinctTransformer, Supplier<VariableNullability> variableNullabilitySupplier, VariableGenerator variableGenerator, RequiredExtensionalDataNodeExtractor requiredDataNodeExtractor, RightProvenanceNormalizer rightProvenanceNormalizer, OptimizationSingletons optimizationSingletons)

Method Summary

Modifier and Type	Method and Description
protected IQTree	preTransformLJRightChild(IQTree rightChild) Can be overridden
protected Optional<AbstractJoinTransferLJTransformer.SelectedNode>	selectForTransfer(ExtensionalDataNode rightDataNode, it.unibz.inf.ontop.com.google.common.collect.ImmutableMultimap<RelationDefinition,ExtensionalDataNode> leftMultimap)
protected IQTree	transformBySearchingFromScratch(IQTree tree)
protected IQTree	transformBySearchingFromScratchFromDistinctTree(IQTree tree)
IQTree	transformConstruction(IQTree tree, ConstructionNode rootNode, IQTree child)
IQTree	transformUnion(IQTree tree, UnionNode rootNode, it.unibz.inf.ontop.com.google.common.collect.ImmutableList<IQTree> children)

Methods inherited from class it.unibz.inf.ontop.iq.optimizer.impl.lj.AbstractJoinTransferLJTransformer

extractRightDataNodes, furtherTransformLeftJoin, getInheritedVariableNullability, matchForeignKey, matchFunctionalDependency, matchIndexes, matchUniqueConstraint, selectRightDataNodesToTransfer, transformBinaryNonCommutativeNode, transformBinaryNonCommutativeNode, transformDistinct, transformFilter, transformInnerJoin, transformLeftJoin, transformNaryCommutativeNode, transformNaryCommutativeNode, transformOrderBy, transformSlice, transformUnaryNode, transformUnaryNode

Methods inherited from class it.unibz.inf.ontop.iq.transform.impl.DefaultNonRecursiveIQTreeTransformer

transformAggregation, transformEmpty, transformExtensionalData, transformIntensionalData, transformLeaf, transformNonStandardBinaryNonCommutativeNode, transformNonStandardLeafNode, transformNonStandardNaryNode, transformNonStandardUnaryNode, transformTrue

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface it.unibz.inf.ontop.iq.transform.IQTreeVisitingTransformer

transform

Constructor Detail

CardinalityInsensitiveTransformer

protected CardinalityInsensitiveTransformer(IQTreeTransformer lookForDistinctTransformer,
                                            Supplier<VariableNullability> variableNullabilitySupplier,
                                            VariableGenerator variableGenerator,
                                            RequiredExtensionalDataNodeExtractor requiredDataNodeExtractor,
                                            RightProvenanceNormalizer rightProvenanceNormalizer,
                                            OptimizationSingletons optimizationSingletons)

Method Detail

selectForTransfer

protected Optional<AbstractJoinTransferLJTransformer.SelectedNode> selectForTransfer(ExtensionalDataNode rightDataNode,
                                                                                     it.unibz.inf.ontop.com.google.common.collect.ImmutableMultimap<RelationDefinition,ExtensionalDataNode> leftMultimap)

Specified by:

selectForTransfer in class AbstractJoinTransferLJTransformer

transformBySearchingFromScratch

protected IQTree transformBySearchingFromScratch(IQTree tree)

Specified by:

transformBySearchingFromScratch in class AbstractJoinTransferLJTransformer

transformBySearchingFromScratchFromDistinctTree

protected IQTree transformBySearchingFromScratchFromDistinctTree(IQTree tree)

preTransformLJRightChild

protected IQTree preTransformLJRightChild(IQTree rightChild)

Description copied from class: AbstractJoinTransferLJTransformer

Can be overridden

Overrides:

preTransformLJRightChild in class AbstractJoinTransferLJTransformer

transformConstruction

public IQTree transformConstruction(IQTree tree,
                                    ConstructionNode rootNode,
                                    IQTree child)

Specified by:

transformConstruction in interface IQTreeVisitingTransformer

Overrides:

transformConstruction in class DefaultNonRecursiveIQTreeTransformer

transformUnion

public IQTree transformUnion(IQTree tree,
                             UnionNode rootNode,
                             it.unibz.inf.ontop.com.google.common.collect.ImmutableList<IQTree> children)

Specified by:

transformUnion in interface IQTreeVisitingTransformer

Overrides:

transformUnion in class DefaultNonRecursiveIQTreeTransformer