org.eclipse.rdf4j.spin.function.KnownTupleFunctionParser Maven / Gradle / Ivy
/*******************************************************************************
* Copyright (c) 2015 Eclipse RDF4J contributors, Aduna, and others.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Distribution License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*******************************************************************************/
package org.eclipse.rdf4j.spin.function;
import org.eclipse.rdf4j.common.exception.RDF4JException;
import org.eclipse.rdf4j.model.IRI;
import org.eclipse.rdf4j.query.algebra.evaluation.TripleSource;
import org.eclipse.rdf4j.query.algebra.evaluation.function.TupleFunction;
import org.eclipse.rdf4j.query.algebra.evaluation.function.TupleFunctionRegistry;
public class KnownTupleFunctionParser implements TupleFunctionParser {
private final TupleFunctionRegistry functionRegistry;
public KnownTupleFunctionParser(TupleFunctionRegistry functionRegistry) {
this.functionRegistry = functionRegistry;
}
@Override
public TupleFunction parse(IRI funcUri, TripleSource store) throws RDF4JException {
return functionRegistry.get(funcUri.stringValue()).orElse(null);
}
}