| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.rya.api.function.temporal; |
| |
| import java.time.ZonedDateTime; |
| import java.time.format.DateTimeParseException; |
| |
| import org.openrdf.model.Value; |
| import org.openrdf.model.ValueFactory; |
| import org.openrdf.query.algebra.evaluation.ValueExprEvaluationException; |
| import org.openrdf.query.algebra.evaluation.function.Function; |
| |
| import edu.umd.cs.findbugs.annotations.DefaultAnnotation; |
| import edu.umd.cs.findbugs.annotations.NonNull; |
| |
| /** |
| * Function for comparing 2 {@link ZonedDateTime} objects in a SPARQL filter. |
| */ |
| @DefaultAnnotation(NonNull.class) |
| abstract class TemporalInstantRelationFunction implements Function { |
| @Override |
| public Value evaluate(final ValueFactory valueFactory, final Value... args) throws ValueExprEvaluationException { |
| if (args.length != 2) { |
| throw new ValueExprEvaluationException(getURI() + " requires exactly 2 arguments, got " + args.length); |
| } |
| |
| try { |
| final ZonedDateTime date1 = ZonedDateTime.parse(args[0].stringValue()); |
| final ZonedDateTime date2 = ZonedDateTime.parse(args[1].stringValue()); |
| final boolean result = relation(date1, date2); |
| |
| return valueFactory.createLiteral(result); |
| } catch (final DateTimeParseException e) { |
| throw new ValueExprEvaluationException("Date/Times provided must be of the ISO-8601 format. Example: 2007-04-05T14:30Z"); |
| } |
| } |
| |
| /** |
| * The comparison function to perform between 2 {@link ZonedDateTime} |
| * objects. |
| * |
| * @param d1 first {@link ZonedDateTime} to compare. (not null) |
| * @param d2 second {@link ZonedDateTime} to compare. (not null) |
| * @return The result of the comparison between {@link ZonedDateTime}s. |
| */ |
| protected abstract boolean relation(ZonedDateTime d1, ZonedDateTime d2); |
| } |