| package org.apache.rya.indexing.statement.metadata; |
| /* |
| * 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. |
| */ |
| |
| import java.util.Arrays; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| |
| import org.apache.rya.api.domain.RyaIRI; |
| import org.apache.rya.indexing.statement.metadata.matching.OWLReify; |
| import org.eclipse.rdf4j.model.IRI; |
| import org.eclipse.rdf4j.model.Value; |
| import org.eclipse.rdf4j.model.vocabulary.RDF; |
| import org.eclipse.rdf4j.query.algebra.QueryModelNode; |
| import org.eclipse.rdf4j.query.algebra.StatementPattern; |
| import org.eclipse.rdf4j.query.algebra.TupleExpr; |
| import org.eclipse.rdf4j.query.algebra.Var; |
| import org.eclipse.rdf4j.query.algebra.evaluation.impl.ExternalSet; |
| import org.eclipse.rdf4j.query.algebra.helpers.AbstractQueryModelVisitor; |
| |
| public class StatementMetadataTestUtils { |
| |
| private static final List<RyaIRI> uriList = Arrays.asList(new RyaIRI(RDF.TYPE.toString()), |
| new RyaIRI(OWLReify.SOURCE.toString()), new RyaIRI(OWLReify.PROPERTY.toString()), |
| new RyaIRI(OWLReify.TARGET.toString())); |
| |
| public static Set<QueryModelNode> getMetadataNodes(TupleExpr query) { |
| MetadataNodeCollector collector = new MetadataNodeCollector(); |
| query.visit(collector); |
| return collector.getNodes(); |
| } |
| |
| public static class MetadataNodeCollector extends AbstractQueryModelVisitor<RuntimeException> { |
| |
| Set<QueryModelNode> qNodes = new HashSet<>(); |
| |
| @Override |
| public void meetNode(final QueryModelNode node) { |
| if (node instanceof ExternalSet) { |
| qNodes.add(node); |
| } |
| super.meetNode(node); |
| } |
| |
| public Set<QueryModelNode> getNodes() { |
| return qNodes; |
| } |
| } |
| |
| public static Set<StatementPattern> getMetadataStatementPatterns(TupleExpr te, Set<RyaIRI> properties) { |
| MetadataStatementPatternCollector collector = new MetadataStatementPatternCollector(properties); |
| te.visit(collector); |
| return collector.getNodes(); |
| |
| } |
| |
| public static class MetadataStatementPatternCollector extends AbstractQueryModelVisitor<RuntimeException> { |
| |
| private Set<StatementPattern> nodes; |
| private Set<RyaIRI> properties; |
| |
| public MetadataStatementPatternCollector(Set<RyaIRI> properties) { |
| this.properties = properties; |
| nodes = new HashSet<>(); |
| } |
| |
| @Override |
| public void meet(StatementPattern node) { |
| Var predicate = node.getPredicateVar(); |
| Value val = predicate.getValue(); |
| if (val != null && val instanceof IRI) { |
| RyaIRI ryaVal = new RyaIRI(val.stringValue()); |
| if (uriList.contains(ryaVal) || properties.contains(ryaVal)) { |
| nodes.add(node); |
| } |
| } |
| super.meet(node); |
| } |
| |
| public Set<StatementPattern> getNodes() { |
| return nodes; |
| } |
| } |
| |
| } |