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

Class AggregationSimplifierImpl.AggregationSimplifyingTransformer

java.lang.Object

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

it.unibz.inf.ontop.iq.transformer.impl.RDFTypeDependentSimplifyingTransformer

it.unibz.inf.ontop.iq.optimizer.impl.AggregationSimplifierImpl.AggregationSimplifyingTransformer

All Implemented Interfaces:

IQTreeTransformer, IQTreeVisitingTransformer

Enclosing class:

AggregationSimplifierImpl

protected static class AggregationSimplifierImpl.AggregationSimplifyingTransformer
extends RDFTypeDependentSimplifyingTransformer

Recursive

Field Summary

Fields inherited from class it.unibz.inf.ontop.iq.transform.impl.DefaultRecursiveIQTreeVisitingTransformer

iqFactory

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AggregationSimplifyingTransformer(VariableGenerator variableGenerator, OptimizationSingletons optimizationSingletons)

Method Summary

Modifier and Type	Method and Description
protected ImmutableTerm	extractRDFTermTypeTerm(ImmutableTerm rdfTerm)
protected boolean	isRDFFunctionalTerm(ImmutableTerm term)
protected Optional<SPARQLAggregationFunctionSymbol.AggregationSimplification>	simplifyAggregationFunctionalTerm(ImmutableFunctionalTerm aggregationFunctionalTerm, IQTree child, boolean hasGroupBy)
IQTree	transformAggregation(IQTree tree, AggregationNode rootNode, IQTree child)

Methods inherited from class it.unibz.inf.ontop.iq.transformer.impl.RDFTypeDependentSimplifyingTransformer

extractPossibleTypes, pushDownDefinitions, unwrapIfElseNull

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

transformBinaryNonCommutativeNode, transformConstruction, transformDistinct, transformEmpty, transformExtensionalData, transformFilter, transformInnerJoin, transformIntensionalData, transformLeaf, transformLeftJoin, transformNaryCommutativeNode, transformNonStandardBinaryNonCommutativeNode, transformNonStandardLeafNode, transformNonStandardNaryNode, transformNonStandardUnaryNode, transformOrderBy, transformSlice, transformTrue, transformUnaryNode, transformUnion

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

AggregationSimplifyingTransformer

protected AggregationSimplifyingTransformer(VariableGenerator variableGenerator,
                                            OptimizationSingletons optimizationSingletons)

Method Detail

transformAggregation

public IQTree transformAggregation(IQTree tree,
                                   AggregationNode rootNode,
                                   IQTree child)

Specified by:

transformAggregation in interface IQTreeVisitingTransformer

Overrides:

transformAggregation in class DefaultRecursiveIQTreeVisitingTransformer

simplifyAggregationFunctionalTerm

protected Optional<SPARQLAggregationFunctionSymbol.AggregationSimplification> simplifyAggregationFunctionalTerm(ImmutableFunctionalTerm aggregationFunctionalTerm,
                                                                                                                IQTree child,
                                                                                                                boolean hasGroupBy)

isRDFFunctionalTerm

protected boolean isRDFFunctionalTerm(ImmutableTerm term)

extractRDFTermTypeTerm

protected ImmutableTerm extractRDFTermTypeTerm(ImmutableTerm rdfTerm)