Package org.aksw.rml.jena.impl

Class RmlQueryGenerator

java.lang.Object

org.aksw.rml.jena.impl.RmlQueryGenerator

public class RmlQueryGenerator
extends Object

Constructor Summary

Constructors

Constructor	Description
RmlQueryGenerator()

Method Summary

Modifier and Type	Method	Description
static List<org.apache.jena.query.Query>	createCanonicalQueries(org.aksw.r2rml.jena.arq.impl.TriplesMapToSparqlMapping mapping, boolean pushDistinct, ReferenceFormulationService registry)	For every non-joining object map create an individual query
static org.apache.jena.sparql.syntax.Element	createJoinGroup(ReferenceFormulationService registry, org.aksw.r2rml.jena.arq.impl.JoinDeclaration join, boolean preDistinct, org.aksw.r2rml.jena.arq.impl.MappingCxt cxt, Function<org.apache.jena.sparql.expr.E_Equals,org.apache.jena.sparql.expr.Expr> getConditions)
static org.apache.jena.query.Query	createQuery(org.aksw.r2rml.jena.arq.impl.JoinDeclaration join, boolean preDistinct, ReferenceFormulationService registry)
static org.apache.jena.query.Query	createQuery(org.aksw.r2rml.jena.arq.impl.TriplesMapToSparqlMapping mapping, ReferenceFormulationService registry)	Produces a query from all non-joining elements

Methods inherited from class java.lang.Object

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

Constructor Details

RmlQueryGenerator

public RmlQueryGenerator()

Method Details

createCanonicalQueries

public static List<org.apache.jena.query.Query> createCanonicalQueries(org.aksw.r2rml.jena.arq.impl.TriplesMapToSparqlMapping mapping,
 boolean pushDistinct,
 ReferenceFormulationService registry)

For every non-joining object map create an individual query

createQuery

public static org.apache.jena.query.Query createQuery(org.aksw.r2rml.jena.arq.impl.TriplesMapToSparqlMapping mapping,
 ReferenceFormulationService registry)

Produces a query from all non-joining elements

createQuery

public static org.apache.jena.query.Query createQuery(org.aksw.r2rml.jena.arq.impl.JoinDeclaration join,
 boolean preDistinct,
 ReferenceFormulationService registry)

Parameters:

join -

preDistinct - Perform a distinct operation on both sides of the join

registry -

Returns:

createJoinGroup

public static org.apache.jena.sparql.syntax.Element createJoinGroup(ReferenceFormulationService registry,
 org.aksw.r2rml.jena.arq.impl.JoinDeclaration join,
 boolean preDistinct,
 org.aksw.r2rml.jena.arq.impl.MappingCxt cxt,
 Function<org.apache.jena.sparql.expr.E_Equals,org.apache.jena.sparql.expr.Expr> getConditions)