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

Class DefinitionPushDownTransformerImpl

java.lang.Object

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

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

All Implemented Interfaces:

IQTreeTransformer, IQTreeVisitingTransformer, DefinitionPushDownTransformer

public class DefinitionPushDownTransformerImpl
extends DefaultRecursiveIQTreeVisitingTransformer
implements DefinitionPushDownTransformer

Field Summary

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

iqFactory

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	DefinitionPushDownTransformerImpl(DefinitionPushDownRequest request, IntermediateQueryFactory iqFactory, OptimizerFactory optimizerFactory, SubstitutionFactory substitutionFactory, TermFactory termFactory)

Method Summary

Modifier and Type	Method and Description
protected IQTree	blockDefinition(IQTree tree)
IQTree	transformAggregation(IQTree tree, AggregationNode rootNode, IQTree child) TODO: understand when the definition does not have to be blocked
IQTree	transformConstruction(IQTree tree, ConstructionNode rootNode, IQTree child)
IQTree	transformDistinct(IQTree tree, DistinctNode rootNode, IQTree child) TODO: stop blocking systematically
IQTree	transformInnerJoin(IQTree tree, InnerJoinNode rootNode, com.google.common.collect.ImmutableList<IQTree> children)
protected IQTree	transformLeaf(LeafIQTree leaf)
IQTree	transformLeftJoin(IQTree tree, LeftJoinNode rootNode, IQTree leftChild, IQTree rightChild)
IQTree	transformNonStandardBinaryNonCommutativeNode(IQTree tree, BinaryNonCommutativeOperatorNode rootNode, IQTree leftChild, IQTree rightChild)
IQTree	transformNonStandardNaryNode(IQTree tree, NaryOperatorNode rootNode, com.google.common.collect.ImmutableList<IQTree> children)
IQTree	transformNonStandardUnaryNode(IQTree tree, UnaryOperatorNode rootNode, IQTree child) Blocks by default
IQTree	transformUnion(IQTree tree, UnionNode rootNode, com.google.common.collect.ImmutableList<IQTree> children)

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

transformBinaryNonCommutativeNode, transformEmpty, transformExtensionalData, transformFilter, transformIntensionalData, transformNaryCommutativeNode, transformNonStandardLeafNode, transformOrderBy, transformSlice, transformTrue, transformUnaryNode

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.IQTreeTransformer

transform

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

transform

Constructor Detail

DefinitionPushDownTransformerImpl

protected DefinitionPushDownTransformerImpl(DefinitionPushDownRequest request,
                                            IntermediateQueryFactory iqFactory,
                                            OptimizerFactory optimizerFactory,
                                            SubstitutionFactory substitutionFactory,
                                            TermFactory termFactory)

Method Detail

transformConstruction

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

Specified by:

transformConstruction in interface IQTreeVisitingTransformer

Overrides:

transformConstruction in class DefaultRecursiveIQTreeVisitingTransformer

transformAggregation

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

TODO: understand when the definition does not have to be blocked

Specified by:

transformAggregation in interface IQTreeVisitingTransformer

Overrides:

transformAggregation in class DefaultRecursiveIQTreeVisitingTransformer

transformDistinct

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

TODO: stop blocking systematically

Specified by:

transformDistinct in interface IQTreeVisitingTransformer

Overrides:

transformDistinct in class DefaultRecursiveIQTreeVisitingTransformer

transformNonStandardUnaryNode

public IQTree transformNonStandardUnaryNode(IQTree tree,
                                            UnaryOperatorNode rootNode,
                                            IQTree child)

Blocks by default

Specified by:

transformNonStandardUnaryNode in interface IQTreeVisitingTransformer

Overrides:

transformNonStandardUnaryNode in class DefaultRecursiveIQTreeVisitingTransformer

transformLeftJoin

public IQTree transformLeftJoin(IQTree tree,
                                LeftJoinNode rootNode,
                                IQTree leftChild,
                                IQTree rightChild)

Specified by:

transformLeftJoin in interface IQTreeVisitingTransformer

Overrides:

transformLeftJoin in class DefaultRecursiveIQTreeVisitingTransformer

transformNonStandardBinaryNonCommutativeNode

public IQTree transformNonStandardBinaryNonCommutativeNode(IQTree tree,
                                                           BinaryNonCommutativeOperatorNode rootNode,
                                                           IQTree leftChild,
                                                           IQTree rightChild)

Specified by:

transformNonStandardBinaryNonCommutativeNode in interface IQTreeVisitingTransformer

Overrides:

transformNonStandardBinaryNonCommutativeNode in class DefaultRecursiveIQTreeVisitingTransformer

transformInnerJoin

public IQTree transformInnerJoin(IQTree tree,
                                 InnerJoinNode rootNode,
                                 com.google.common.collect.ImmutableList<IQTree> children)

Specified by:

transformInnerJoin in interface IQTreeVisitingTransformer

Overrides:

transformInnerJoin in class DefaultRecursiveIQTreeVisitingTransformer

transformUnion

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

Specified by:

transformUnion in interface IQTreeVisitingTransformer

Overrides:

transformUnion in class DefaultRecursiveIQTreeVisitingTransformer

transformNonStandardNaryNode

public IQTree transformNonStandardNaryNode(IQTree tree,
                                           NaryOperatorNode rootNode,
                                           com.google.common.collect.ImmutableList<IQTree> children)

Specified by:

transformNonStandardNaryNode in interface IQTreeVisitingTransformer

Overrides:

transformNonStandardNaryNode in class DefaultRecursiveIQTreeVisitingTransformer

transformLeaf

protected IQTree transformLeaf(LeafIQTree leaf)

Overrides:

transformLeaf in class DefaultRecursiveIQTreeVisitingTransformer

blockDefinition

protected IQTree blockDefinition(IQTree tree)