com.github.anno4j.querying.evaluation.ldpath

Class LDPathEvaluator

java.lang.Object

com.github.anno4j.querying.evaluation.ldpath.LDPathEvaluator

public class LDPathEvaluator
extends Object

Function to transform LDPath to SPARQL. Recursively splits the LDPath expression into the separate parts and evaluate them. More specifically it creates the SPARQL query portions for each considered part, using the Jena ARQ query engine

Constructor Summary

Constructors

Constructor and Description
LDPathEvaluator()

Method Summary

Methods

Modifier and Type	Method and Description
static com.hp.hpl.jena.sparql.core.Var	evaluate(org.apache.marmotta.ldpath.api.selectors.NodeSelector nodeSelector, com.hp.hpl.jena.sparql.syntax.ElementGroup elementGroup, com.hp.hpl.jena.sparql.core.Var variable, LDPathEvaluatorConfiguration evaluatorConfiguration) Function to transform LDPath to SPARQL.
static com.hp.hpl.jena.sparql.expr.Expr	evaluate(org.apache.marmotta.ldpath.api.tests.NodeTest nodeTest, com.hp.hpl.jena.sparql.syntax.ElementGroup elementGroup, com.hp.hpl.jena.sparql.core.Var variable, LDPathEvaluatorConfiguration evaluatorConfiguration)

Methods inherited from class java.lang.Object

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

Constructor Detail

LDPathEvaluator

public LDPathEvaluator()

Method Detail

evaluate

public static com.hp.hpl.jena.sparql.core.Var evaluate(org.apache.marmotta.ldpath.api.selectors.NodeSelector nodeSelector,
                                       com.hp.hpl.jena.sparql.syntax.ElementGroup elementGroup,
                                       com.hp.hpl.jena.sparql.core.Var variable,
                                       LDPathEvaluatorConfiguration evaluatorConfiguration)

Function to transform LDPath to SPARQL. Recursively splits the LDPath expression into the separate parts and evaluate them. More specifically it creates the SPARQL query portions for each considered part, using the Jena ARQ query engine

Parameters:

nodeSelector - The current NodeSelector of the LDPath

elementGroup - ElementGroup containing the actual query parts

variable - The latest created variable

Returns:

the latest referenced variable

See Also:

https://jena.apache.org/documentation/query/

evaluate

public static com.hp.hpl.jena.sparql.expr.Expr evaluate(org.apache.marmotta.ldpath.api.tests.NodeTest nodeTest,
                                        com.hp.hpl.jena.sparql.syntax.ElementGroup elementGroup,
                                        com.hp.hpl.jena.sparql.core.Var variable,
                                        LDPathEvaluatorConfiguration evaluatorConfiguration)