org.aksw.sparqlify.core.algorithms

Class CandidateViewSelectorImpl

java.lang.Object

org.aksw.sparqlify.core.algorithms.CandidateViewSelectorBase<ViewDefinition,Mapping>

org.aksw.sparqlify.core.algorithms.CandidateViewSelectorImpl

Type Parameters:

T -

All Implemented Interfaces:

CandidateViewSelector<ViewDefinition>

public class CandidateViewSelectorImpl
extends CandidateViewSelectorBase<ViewDefinition,Mapping>

The candidate selector for RDB-RDF

Author:

raven

Field Summary

Fields

Modifier and Type	Field and Description
static com.hp.hpl.jena.sdb.core.Generator	emptyViewNameGenerator

Constructor Summary

Constructors

Constructor and Description
CandidateViewSelectorImpl()
CandidateViewSelectorImpl(MappingOps mappingOps)
CandidateViewSelectorImpl(MappingOps mappingOps, ViewDefinitionNormalizer<ViewDefinition> viewDefinitionNormalizer)

Method Summary

Methods

Modifier and Type	Method and Description
Mapping	createContext(Mapping baseMapping, ViewInstance<ViewDefinition> viewInstance) Create a new context based on the baseContext and the current candidate viewInstance if null is returned, the candidateViewInstance becomes rejected, otherwise, the new context will be passed to this function together with all sub candidate viewInstances.
static com.hp.hpl.jena.sparql.algebra.Op	createEmptyViewInstance(OpQuadPattern2 opQuadPattern)
com.hp.hpl.jena.sparql.algebra.Op	createOp(OpQuadPattern2 opQuadPattern, List<RecursionResult<ViewDefinition,Mapping>> conjunctions)
com.hp.hpl.jena.sparql.algebra.Op	createOpOldButWorking(OpQuadPattern2 opQuadPattern, List<RecursionResult<ViewDefinition,Mapping>> conjunctions)
ViewDefinition	normalizeView(ViewDefinition view) Override this function to transform the view before actually indexing it

Methods inherited from class org.aksw.sparqlify.core.algorithms.CandidateViewSelectorBase

_getApplicableViews, _getApplicableViews, addView, createViewInstance, deriveConstraint, deriveConstraint, deriveConstraint, deriveIsPrefixOfConstraint, deriveViewLookupConstraint, filterRestrictionsBound, findCandidates, findQuadWithFewestViewCandidates, getApplicableViews, getApplicableViews, getApplicableViews, getApplicableViews, getApplicableViews, getApplicableViews, getApplicableViews, getApplicableViews, getApplicableViews, getApplicableViews, getApplicableViews, getApplicableViews, getApplicableViews, getApplicableViews, getApplicableViews, getApplicableViews, getApplicableViews, getApplicableViewsBase, getApplicableViewsRec2, getCandidateNames, getRestrictions, getRestrictions, getRestrictions2, getType, getViews, inferColumnConstraints, isSatisfiable, processLeftJoin, processLeftJoinDirect, processLeftJoinSplitLhs, processOpExtend

Methods inherited from class java.lang.Object

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

Field Detail

emptyViewNameGenerator

public static com.hp.hpl.jena.sdb.core.Generator emptyViewNameGenerator

Constructor Detail

CandidateViewSelectorImpl

public CandidateViewSelectorImpl()

CandidateViewSelectorImpl

public CandidateViewSelectorImpl(MappingOps mappingOps)

CandidateViewSelectorImpl

public CandidateViewSelectorImpl(MappingOps mappingOps,
                         ViewDefinitionNormalizer<ViewDefinition> viewDefinitionNormalizer)

Method Detail

normalizeView

public ViewDefinition normalizeView(ViewDefinition view)

Description copied from class: CandidateViewSelectorBase

Override this function to transform the view before actually indexing it

Overrides:

normalizeView in class CandidateViewSelectorBase<ViewDefinition,Mapping>

Returns:

createContext

public Mapping createContext(Mapping baseMapping,
                    ViewInstance<ViewDefinition> viewInstance)
                      throws UnsatisfiabilityException

Create a new context based on the baseContext and the current candidate viewInstance if null is returned, the candidateViewInstance becomes rejected, otherwise, the new context will be passed to this function together with all sub candidate viewInstances.

Overrides:

createContext in class CandidateViewSelectorBase<ViewDefinition,Mapping>

Returns:

Throws:

UnsatisfiabilityException

createOp

public com.hp.hpl.jena.sparql.algebra.Op createOp(OpQuadPattern2 opQuadPattern,
                                         List<RecursionResult<ViewDefinition,Mapping>> conjunctions)

Specified by:

createOp in class CandidateViewSelectorBase<ViewDefinition,Mapping>

createOpOldButWorking

public com.hp.hpl.jena.sparql.algebra.Op createOpOldButWorking(OpQuadPattern2 opQuadPattern,
                                                      List<RecursionResult<ViewDefinition,Mapping>> conjunctions)

createEmptyViewInstance

public static com.hp.hpl.jena.sparql.algebra.Op createEmptyViewInstance(OpQuadPattern2 opQuadPattern)