Package it.unibz.inf.ontop.generation.normalization.impl

Class ProjectOrderByTermsNormalizer

java.lang.Object

it.unibz.inf.ontop.iq.transform.impl.DefaultRecursiveIQTreeExtendedTransformer<VariableGenerator>

it.unibz.inf.ontop.generation.normalization.impl.ProjectOrderByTermsNormalizer

All Implemented Interfaces:

DialectExtraNormalizer, IQTreeExtendedTransformer<VariableGenerator>

Direct Known Subclasses:

AlwaysProjectOrderByTermsNormalizer, OnlyInPresenceOfDistinctProjectOrderByTermsNormalizer

public class ProjectOrderByTermsNormalizer
extends DefaultRecursiveIQTreeExtendedTransformer<VariableGenerator>
implements DialectExtraNormalizer

Field Summary

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

iqFactory

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ProjectOrderByTermsNormalizer(boolean onlyInPresenceOfDistinct, CoreSingletons coreSingletons)

Method Summary

Modifier and Type	Method	Description
protected boolean	isSupported(it.unibz.inf.ontop.com.google.common.collect.ImmutableSet<Variable> projectedVariables, it.unibz.inf.ontop.generation.normalization.impl.ProjectOrderByTermsNormalizer.Analysis analysis, it.unibz.inf.ontop.com.google.common.collect.ImmutableSet<Map.Entry<Variable,NonGroundTerm>> newBindings)	Decides whether or not new bindings can be added
protected boolean	mayImpactDistinct(ImmutableTerm term, it.unibz.inf.ontop.com.google.common.collect.ImmutableSet<ImmutableTerm> alreadyProjectedTerms)	TODO: explain
IQTree	transform(IQTree tree, VariableGenerator variableGenerator)
IQTree	transformConstruction(IQTree tree, ConstructionNode rootNode, IQTree child, VariableGenerator variableGenerator)
protected IQTree	transformConstructionSliceDistinctOrOrderByTree(IQTree tree, VariableGenerator variableGenerator)
IQTree	transformDistinct(IQTree tree, DistinctNode rootNode, IQTree child, VariableGenerator variableGenerator)
IQTree	transformOrderBy(IQTree tree, OrderByNode rootNode, IQTree child, VariableGenerator variableGenerator)
IQTree	transformSlice(IQTree tree, SliceNode sliceNode, IQTree child, VariableGenerator variableGenerator)

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

transformAggregation, transformBinaryNonCommutativeNode, transformEmpty, transformExtensionalData, transformFilter, transformInnerJoin, transformIntensionalData, transformLeaf, transformLeftJoin, transformNaryCommutativeNode, transformNonStandardBinaryNonCommutativeNode, transformNonStandardLeafNode, transformNonStandardNaryNode, transformNonStandardUnaryNode, transformTrue, transformUnaryNode, transformUnion, transformValues

Methods inherited from class java.lang.Object

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

Constructor Detail

ProjectOrderByTermsNormalizer

protected ProjectOrderByTermsNormalizer(boolean onlyInPresenceOfDistinct,
                                        CoreSingletons coreSingletons)

Method Detail

transform

public IQTree transform(IQTree tree,
                        VariableGenerator variableGenerator)

Specified by:

transform in interface DialectExtraNormalizer

Specified by:

transform in interface IQTreeExtendedTransformer<VariableGenerator>

transformConstruction

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

Specified by:

transformConstruction in interface IQTreeExtendedTransformer<VariableGenerator>

Overrides:

transformConstruction in class DefaultRecursiveIQTreeExtendedTransformer<VariableGenerator>

transformDistinct

public IQTree transformDistinct(IQTree tree,
                                DistinctNode rootNode,
                                IQTree child,
                                VariableGenerator variableGenerator)

Specified by:

transformDistinct in interface IQTreeExtendedTransformer<VariableGenerator>

Overrides:

transformDistinct in class DefaultRecursiveIQTreeExtendedTransformer<VariableGenerator>

transformSlice

public IQTree transformSlice(IQTree tree,
                             SliceNode sliceNode,
                             IQTree child,
                             VariableGenerator variableGenerator)

Specified by:

transformSlice in interface IQTreeExtendedTransformer<VariableGenerator>

Overrides:

transformSlice in class DefaultRecursiveIQTreeExtendedTransformer<VariableGenerator>

transformOrderBy

public IQTree transformOrderBy(IQTree tree,
                               OrderByNode rootNode,
                               IQTree child,
                               VariableGenerator variableGenerator)

Specified by:

transformOrderBy in interface IQTreeExtendedTransformer<VariableGenerator>

Overrides:

transformOrderBy in class DefaultRecursiveIQTreeExtendedTransformer<VariableGenerator>

transformConstructionSliceDistinctOrOrderByTree

protected IQTree transformConstructionSliceDistinctOrOrderByTree(IQTree tree,
                                                                 VariableGenerator variableGenerator)

isSupported

protected boolean isSupported(it.unibz.inf.ontop.com.google.common.collect.ImmutableSet<Variable> projectedVariables,
                              it.unibz.inf.ontop.generation.normalization.impl.ProjectOrderByTermsNormalizer.Analysis analysis,
                              it.unibz.inf.ontop.com.google.common.collect.ImmutableSet<Map.Entry<Variable,NonGroundTerm>> newBindings)

Decides whether or not new bindings can be added

mayImpactDistinct

protected boolean mayImpactDistinct(ImmutableTerm term,
                                    it.unibz.inf.ontop.com.google.common.collect.ImmutableSet<ImmutableTerm> alreadyProjectedTerms)

TODO: explain