| package org.apache.rya.indexing.pcj.matching; |
| |
| /* |
| * 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.HashSet; |
| import java.util.List; |
| import java.util.Set; |
| |
| import org.apache.rya.indexing.external.matching.QuerySegment; |
| import org.apache.rya.indexing.external.matching.QuerySegmentFactory; |
| import org.apache.rya.indexing.external.matching.TopOfQueryFilterRelocator; |
| import org.apache.rya.indexing.external.tupleSet.ExternalTupleSet; |
| import org.apache.rya.indexing.external.tupleSet.SimpleExternalTupleSet; |
| import org.eclipse.rdf4j.query.MalformedQueryException; |
| import org.eclipse.rdf4j.query.algebra.Filter; |
| import org.eclipse.rdf4j.query.algebra.Join; |
| import org.eclipse.rdf4j.query.algebra.Projection; |
| import org.eclipse.rdf4j.query.algebra.QueryModelNode; |
| import org.eclipse.rdf4j.query.algebra.TupleExpr; |
| import org.eclipse.rdf4j.query.parser.ParsedQuery; |
| import org.eclipse.rdf4j.query.parser.sparql.SPARQLParser; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| public class JoinSegmentTest { |
| |
| private final QuerySegmentFactory<ExternalTupleSet> qFactory = new QuerySegmentFactory<ExternalTupleSet>(); |
| |
| @Test |
| public void testBasicSegment() throws MalformedQueryException { |
| |
| String query1 = ""// |
| + "SELECT ?e ?c ?l" // |
| + "{" // |
| + " ?e a ?c . "// |
| + " ?e <uri:talksTo> ?l . "// |
| + " ?e <http://www.w3.org/2000/01/rdf-schema#label> ?l "// |
| + "}";// |
| |
| String query2 = ""// |
| + "SELECT ?e ?c ?l" // |
| + "{" // |
| + " ?e a ?c . "// |
| + " ?e <uri:talksTo> ?l . "// |
| + "}";// |
| |
| SPARQLParser parser = new SPARQLParser(); |
| ParsedQuery pq1 = parser.parseQuery(query1, null); |
| ParsedQuery pq2 = parser.parseQuery(query2, null); |
| TupleExpr te1 = pq1.getTupleExpr(); |
| TupleExpr te2 = pq2.getTupleExpr(); |
| Join join1 = (Join) ((Projection) te1).getArg(); |
| Join join2 = (Join) ((Projection) te2).getArg(); |
| |
| |
| QuerySegment<ExternalTupleSet> seg1 = qFactory.getQuerySegment(join1); |
| QuerySegment<ExternalTupleSet> seg2 = qFactory.getQuerySegment(join2); |
| |
| Assert.assertEquals(true, seg1.containsQuerySegment(seg2)); |
| Assert.assertEquals(join1, seg1.getQuery().getTupleExpr()); |
| Assert.assertEquals(join2, seg2.getQuery().getTupleExpr()); |
| |
| SimpleExternalTupleSet pcj = new SimpleExternalTupleSet((Projection)te2); |
| List<QueryModelNode> nodes = seg1.getOrderedNodes(); |
| QueryModelNode node = nodes.get(0); |
| seg1.replaceWithExternalSet(seg2, pcj); |
| |
| Set<QueryModelNode> nodeSet = new HashSet<>(); |
| nodeSet.add(node); |
| nodeSet.add(pcj); |
| |
| Assert.assertEquals(nodeSet, seg1.getUnOrderedNodes()); |
| |
| } |
| |
| |
| @Test |
| public void testBasicMatchWithFilter() throws Exception { |
| |
| String query1 = ""// |
| + "SELECT ?e ?c ?l" // |
| + "{" // |
| + " Filter(?e = <uri:Bob>)" // |
| + " ?e <http://www.w3.org/2000/01/rdf-schema#label> ?l . "// |
| + " ?e a ?c . "// |
| + " ?e <uri:talksTo> ?l . "// |
| + "}";// |
| |
| String query2 = ""// |
| + "SELECT ?e ?c ?l" // |
| + "{" // |
| + " Filter(?e = <uri:Bob>)" // |
| + " ?e a ?c . "// |
| + " ?e <uri:talksTo> ?l . "// |
| + "}";// |
| |
| SPARQLParser parser = new SPARQLParser(); |
| ParsedQuery pq1 = parser.parseQuery(query1, null); |
| ParsedQuery pq2 = parser.parseQuery(query2, null); |
| TupleExpr te1 = pq1.getTupleExpr(); |
| TupleExpr te2 = pq2.getTupleExpr(); |
| TopOfQueryFilterRelocator.moveFiltersToTop(te1); |
| TopOfQueryFilterRelocator.moveFiltersToTop(te1); |
| Filter filter1 = (Filter) ((Projection) te1).getArg(); |
| Filter filter2 = (Filter) ((Projection) te2).getArg(); |
| |
| QuerySegment<ExternalTupleSet> seg1 = qFactory.getQuerySegment(filter1); |
| QuerySegment<ExternalTupleSet> seg2 = qFactory.getQuerySegment(filter2); |
| |
| |
| Assert.assertEquals(filter1, seg1.getQuery().getTupleExpr()); |
| Assert.assertEquals(filter2, seg2.getQuery().getTupleExpr()); |
| Assert.assertEquals(true, seg1.containsQuerySegment(seg2)); |
| |
| SimpleExternalTupleSet pcj = new SimpleExternalTupleSet((Projection)te2); |
| List<QueryModelNode> nodes = seg1.getOrderedNodes(); |
| QueryModelNode node = nodes.get(3); |
| seg1.replaceWithExternalSet(seg2, pcj); |
| |
| Set<QueryModelNode> nodeSet = new HashSet<>(); |
| nodeSet.add(node); |
| nodeSet.add(pcj); |
| |
| Assert.assertEquals(nodeSet, seg1.getUnOrderedNodes()); |
| |
| } |
| |
| |
| |
| @Test |
| public void testNoMatch() throws Exception { |
| |
| String query1 = ""// |
| + "SELECT ?e ?c ?l" // |
| + "{" // |
| + " Filter(?e = <uri:Bob>)" // |
| + " ?e <http://www.w3.org/2000/01/rdf-schema#label> ?l . "// |
| + " ?e a ?c . "// |
| + " ?e <uri:talksTo> ?l . "// |
| + "}";// |
| |
| String query2 = ""// |
| + "SELECT ?e ?c ?l" // |
| + "{" // |
| + " Filter(?e = <uri:Bob>)" // |
| + " ?e a ?c . "// |
| + " ?e <uri:worksAt> ?l . "// |
| + "}";// |
| |
| SPARQLParser parser = new SPARQLParser(); |
| ParsedQuery pq1 = parser.parseQuery(query1, null); |
| ParsedQuery pq2 = parser.parseQuery(query2, null); |
| TupleExpr te1 = pq1.getTupleExpr(); |
| TupleExpr te2 = pq2.getTupleExpr(); |
| TopOfQueryFilterRelocator.moveFiltersToTop(te1); |
| TopOfQueryFilterRelocator.moveFiltersToTop(te1); |
| Filter filter1 = (Filter) ((Projection) te1).getArg(); |
| Filter filter2 = (Filter) ((Projection) te2).getArg(); |
| |
| QuerySegment<ExternalTupleSet> seg1 = qFactory.getQuerySegment(filter1); |
| QuerySegment<ExternalTupleSet> seg2 = qFactory.getQuerySegment(filter2); |
| |
| |
| Assert.assertEquals(false, seg1.containsQuerySegment(seg2)); |
| |
| } |
| |
| |
| |
| @Test |
| public void testNoMatchTooLarge() throws Exception { |
| |
| String query1 = ""// |
| + "SELECT ?e ?c ?l" // |
| + "{" // |
| + " ?e <http://www.w3.org/2000/01/rdf-schema#label> ?l . "// |
| + " ?e a ?c . "// |
| + " ?e <uri:talksTo> ?l . "// |
| + "}";// |
| |
| String query2 = ""// |
| + "SELECT ?e ?c ?l" // |
| + "{" // |
| + " ?e a ?c . "// |
| + " ?e <uri:worksAt> ?l . "// |
| + "}";// |
| |
| SPARQLParser parser = new SPARQLParser(); |
| ParsedQuery pq1 = parser.parseQuery(query1, null); |
| ParsedQuery pq2 = parser.parseQuery(query2, null); |
| TupleExpr te1 = pq1.getTupleExpr(); |
| TupleExpr te2 = pq2.getTupleExpr(); |
| TopOfQueryFilterRelocator.moveFiltersToTop(te1); |
| TopOfQueryFilterRelocator.moveFiltersToTop(te1); |
| Join join1 = (Join) ((Projection) te1).getArg(); |
| Join join2 = (Join) ((Projection) te2).getArg(); |
| |
| QuerySegment<ExternalTupleSet> seg1 = qFactory.getQuerySegment(join1); |
| QuerySegment<ExternalTupleSet> seg2 = qFactory.getQuerySegment(join2); |
| |
| Assert.assertEquals(false, seg2.containsQuerySegment(seg1)); |
| |
| } |
| |
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| |
| } |