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* Licensed to the Apache Software Foundation (ASF) under one
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* 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,
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* See the License for the specific language governing permissions and
* limitations under the License.
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package org.apache.jena.sparql.core.mem;
import static java.util.stream.Collectors.toSet;
import static org.apache.jena.ext.com.google.common.collect.ImmutableSet.of;
import static org.apache.jena.graph.Node.ANY;
import static org.apache.jena.graph.NodeFactory.createBlankNode;
import static org.apache.jena.sparql.core.mem.TupleSlot.*;
import java.util.HashSet;
import java.util.Set;
import java.util.stream.Stream;
import org.apache.jena.graph.Node;
import org.apache.jena.sparql.core.Quad;
import org.junit.Test;
import static org.junit.Assert.* ;
public class TestHexTable extends AbstractTestQuadTable {
@Test
public void testListGraphNodes() {
final int nodesToTry = 50;
final HexTable index = new HexTable();
final Set<Node> graphNodes = new HashSet<>(nodesToTry);
index.begin(null);
for (int i = 0; i < nodesToTry; i++) {
final Node node = createBlankNode();
index.add(Quad.create(node, node, node, node));
graphNodes.add(node);
assertEquals(graphNodes, index.listGraphNodes().collect(toSet()));
}
index.end();
}
@Test
public void checkConcreteQueries() {
queryPatterns().filter(p -> !allWildcardQuery.equals(p)).map(TestHexTable::exampleFrom).forEach(testQuery -> {
final HexTable index = new HexTable();
index.begin(null);
// add our sample quad
index.add(testTuple());
// add a noise quad from which our sample should be distinguished
final Node node = createBlankNode();
final Quad noiseQuad = Quad.create(node, node, node, node);
index.add(noiseQuad);
index.commit();
index.begin(null);
Set<Quad> contents = index
.find(testQuery.getGraph(), testQuery.getSubject(), testQuery.getPredicate(), testQuery.getObject())
.collect(toSet());
assertEquals(of(testTuple()), contents);
// both Node.ANY and null should work as wildcards
contents = index.find(null, ANY, null, ANY).collect(toSet());
assertEquals(of(testTuple(), noiseQuad), contents);
index.end();
});
}
private static Quad exampleFrom(final Set<TupleSlot> pattern) {
return Quad.create(pattern.contains(GRAPH) ? sampleNode : ANY, pattern.contains(SUBJECT) ? sampleNode : ANY,
pattern.contains(PREDICATE) ? sampleNode : ANY, pattern.contains(OBJECT) ? sampleNode : ANY);
}
private final HexTable testTable = new HexTable();
@Override
protected QuadTable table() {
return testTable;
}
@Override
protected Stream<Quad> tuples() {
return table().find(ANY, ANY, ANY, ANY);
}
}