Package org.aksw.jena_sparql_api.data_query.impl

Class PathToRelationMapper<P>

java.lang.Object

org.aksw.jena_sparql_api.data_query.impl.PathToRelationMapper<P>

Type Parameters:

P -

public class PathToRelationMapper<P>
extends Object

Stateful mapper that creates SPARQL BinaryRelation objects from paths, thereby ensuring consistent variable naming The mapper does not track changes - such as modifying a path's alias TODO Here is the place for making use of a registry for mapping path elements to binary relations if desired ~ Claus Stadler, Jun 2, 2019

Author:

Claus Stadler, May 30, 2018

Field Summary

Fields

Modifier and Type	Field	Description
protected Set<org.apache.jena.sparql.core.Var>	forbiddenVars
protected Map<P,Fragment2>	map
protected PathAccessorRdf<P>	pathAccessor
protected org.aksw.commons.collections.generator.Generator<org.apache.jena.sparql.core.Var>	varGen

Constructor Summary

Constructors

Constructor	Description
PathToRelationMapper(PathAccessorRdf<P> pathAccessor)
PathToRelationMapper(PathAccessorRdf<P> pathAccessor, String baseName)
PathToRelationMapper(PathAccessorRdf<P> pathAccessor, Map<P,Fragment2> map, Set<org.apache.jena.sparql.core.Var> forbiddenVars, org.aksw.commons.collections.generator.Generator<org.apache.jena.sparql.core.Var> varGen)

Method Summary

Modifier and Type	Method	Description
static <P> org.apache.jena.sparql.graph.NodeTransform	createNodeTransformSubstitutePathReferences(Function<? super org.apache.jena.graph.Node,? extends P> tryMapToPath, Function<? super P,? extends org.apache.jena.graph.Node> mapToNode)
Map<P,Fragment2>	getMap()
org.apache.jena.graph.Node	getNode(P path)
Fragment2	getOrCreate(P path)
Fragment2	getOverallRelation(P path)
PathAccessorRdf<P>	getPathAccessor()

Methods inherited from class java.lang.Object

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

Field Details

pathAccessor

protected PathAccessorRdf<P> pathAccessor

map

protected Map<P,Fragment2> map

forbiddenVars

protected Set<org.apache.jena.sparql.core.Var> forbiddenVars

varGen

protected org.aksw.commons.collections.generator.Generator<org.apache.jena.sparql.core.Var> varGen

Constructor Details

PathToRelationMapper

public PathToRelationMapper(PathAccessorRdf<P> pathAccessor)

PathToRelationMapper

public PathToRelationMapper(PathAccessorRdf<P> pathAccessor,
 String baseName)

PathToRelationMapper

public PathToRelationMapper(PathAccessorRdf<P> pathAccessor,
 Map<P,Fragment2> map,
 Set<org.apache.jena.sparql.core.Var> forbiddenVars,
 org.aksw.commons.collections.generator.Generator<org.apache.jena.sparql.core.Var> varGen)

Method Details

getMap

public Map<P,Fragment2> getMap()

createNodeTransformSubstitutePathReferences

public static <P>
org.apache.jena.sparql.graph.NodeTransform createNodeTransformSubstitutePathReferences(Function<? super org.apache.jena.graph.Node,? extends P> tryMapToPath,
 Function<? super P,? extends org.apache.jena.graph.Node> mapToNode)

getPathAccessor

public PathAccessorRdf<P> getPathAccessor()

getNode

public org.apache.jena.graph.Node getNode(P path)

getOverallRelation

public Fragment2 getOverallRelation(P path)

getOrCreate

public Fragment2 getOrCreate(P path)