org.eclipse.rdf4j.spin.function.spif.Trim 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.spif;
import org.eclipse.rdf4j.model.Literal;
import org.eclipse.rdf4j.model.Value;
import org.eclipse.rdf4j.model.ValueFactory;
import org.eclipse.rdf4j.model.vocabulary.SPIF;
import org.eclipse.rdf4j.query.algebra.evaluation.ValueExprEvaluationException;
import org.eclipse.rdf4j.query.algebra.evaluation.function.UnaryFunction;
public class Trim extends UnaryFunction {
@Override
public String getURI() {
return SPIF.TRIM_FUNCTION.toString();
}
@Override
protected Value evaluate(ValueFactory valueFactory, Value arg) throws ValueExprEvaluationException {
if (!(arg instanceof Literal)) {
throw new ValueExprEvaluationException("Argument must be a literal");
}
return valueFactory.createLiteral(arg.stringValue().trim());
}
}