/**
* 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.jena.riot.thrift;
import java.io.ByteArrayInputStream ;
import java.io.ByteArrayOutputStream ;
import java.util.Iterator ;
import org.apache.jena.atlas.iterator.Iter ;
import org.apache.jena.atlas.junit.BaseTest ;
import org.apache.jena.atlas.lib.StrUtils ;
import org.apache.jena.graph.Graph ;
import org.apache.jena.graph.Node ;
import org.apache.jena.graph.Triple ;
import org.apache.jena.riot.Lang ;
import org.apache.jena.riot.RDFDataMgr ;
import org.apache.jena.riot.system.StreamOps ;
import org.apache.jena.riot.system.StreamRDF ;
import org.apache.jena.riot.system.StreamRDFLib ;
import org.apache.jena.riot.system.StreamRDFWriter ;
import org.apache.jena.sparql.core.DatasetGraph ;
import org.apache.jena.sparql.core.DatasetGraphFactory ;
import org.apache.jena.sparql.core.Quad ;
import org.apache.jena.sparql.graph.GraphFactory ;
import org.apache.jena.sparql.sse.SSE ;
import org.apache.jena.sparql.util.IsoMatcher ;
import org.junit.Test ;
public class TestStreamRDFThrift extends BaseTest {
private static final String DIR = TS_RDFThrift.TestingDir ;
static String gs = StrUtils.strjoinNL(
"(graph",
" (_:a :p 123) ",
" (_:a :p 'foo'@en) ",
" (_:b :p '456') ", // Presrved values only.
" (_:b :p '456.5') ",
" (_:b :p '456.5e6') ",
")") ;
static Graph graph = SSE.parseGraph(gs) ;
static String dgs = StrUtils.strjoinNL(
"(dataset",
" (graph (:s1 :p _:a) (:s2 :p _:a))" ,
" (graph :g (:s1 :p _:a))" ,
" (graph _:a (:s2 :p _:a))" ,
")" ) ;
static DatasetGraph datasetGraph = SSE.parseDatasetGraph(dgs) ;
// graph_01 and graph_02 are the same test but use different ways to read/write the graph.
// Ditto dataset_01 and dataset_02
@Test public void graph_01() {
ByteArrayOutputStream out = new ByteArrayOutputStream() ;
StreamRDF stream = BinRDF.streamToOutputStream(out, true) ; // With values.
StreamOps.graphToStream(graph, stream) ;
byte[] bytes = out.toByteArray() ;
ByteArrayInputStream in = new ByteArrayInputStream(bytes) ;
Graph g2 = GraphFactory.createGraphMem() ;
StreamRDF stream2 = StreamRDFLib.graph(g2) ;
BinRDF.inputStreamToStream(in, stream2) ;
//assertTrue(graph.isIsomorphicWith(g2)) ;
boolean b = IsoMatcher.isomorphic(graph, g2) ; //****
assertTrue(b) ;
// Stronger - same bNodes.
sameTerms(graph, g2) ;
}
@Test public void graph_02() {
ByteArrayOutputStream out = new ByteArrayOutputStream() ;
StreamRDFWriter.write(out, graph, Lang.RDFTHRIFT) ;
byte[] bytes = out.toByteArray() ;
ByteArrayInputStream in = new ByteArrayInputStream(bytes) ;
Graph g2 = GraphFactory.createGraphMem() ;
RDFDataMgr.read(g2, in, Lang.RDFTHRIFT) ;
boolean b = IsoMatcher.isomorphic(graph, g2) ;
assertTrue(b) ;
// Stronger - same bNodes.
// ** Java8
//graph.find(null, null, null).forEachRemaining(t -> assertTrue(g2.contains(t))) ;
// Stronger - same bNodes.
sameTerms(graph, g2) ;
}
@Test public void dataset_01() {
DatasetGraph dsg1 = datasetGraph ;
ByteArrayOutputStream out = new ByteArrayOutputStream() ;
StreamRDF stream = BinRDF.streamToOutputStream(out) ;
StreamOps.datasetToStream(dsg1, stream) ;
byte[] bytes = out.toByteArray() ;
ByteArrayInputStream in = new ByteArrayInputStream(bytes) ;
DatasetGraph dsg2 = DatasetGraphFactory.create() ;
StreamRDF stream2 = StreamRDFLib.dataset(dsg2) ;
BinRDF.inputStreamToStream(in, stream2) ;
boolean b = IsoMatcher.isomorphic(dsg1, dsg2) ;
assertTrue(b) ;
// Stronger - same bNode and same as in original data.
Node obj = Iter.first(dsg1.listGraphNodes(), Node::isBlank) ;
termAsObject(dsg1, obj) ;
}
@Test public void dataset_02() {
DatasetGraph dsg1 = datasetGraph ;
ByteArrayOutputStream out = new ByteArrayOutputStream() ;
StreamRDFWriter.write(out, dsg1, Lang.RDFTHRIFT) ;
byte[] bytes = out.toByteArray() ;
ByteArrayInputStream in = new ByteArrayInputStream(bytes) ;
DatasetGraph dsg2 = DatasetGraphFactory.create() ;
StreamRDF stream2 = StreamRDFLib.dataset(dsg2) ;
BinRDF.inputStreamToStream(in, stream2) ;
boolean b = IsoMatcher.isomorphic(dsg1, dsg2) ;
assertTrue(b) ;
// Stronger - same bNode and same as in original data.
Node obj = Iter.first(dsg1.listGraphNodes(), Node::isBlank) ;
termAsObject(dsg1, obj) ;
}
static void sameTerms(Graph g1, Graph g2) {
assertEquals(g1.size() , g2.size() ) ;
// ** Java8
//g1.find(null, null, null).forEachRemaining(t -> assertTrue(g2.contains(t))) ;
Iterator<Triple> iter = g1.find(null, null, null) ;
while(iter.hasNext()) {
Triple t = iter.next() ;
g2.contains(t) ;
}
}
static void termAsObject(DatasetGraph dsg, Node term) {
Iterator<Quad> iter = dsg.find() ;
for ( ; iter.hasNext() ; ) {
Quad quad = iter.next() ;
if ( quad.getObject().equals(term) )
return ;
}
fail("Failed to find "+term) ;
}
// ** Java8
// public static <T> Stream<T> stream(Iterator<? extends T> iterator) {
// int characteristics = Spliterator.ORDERED | Spliterator.IMMUTABLE;
// return StreamSupport.stream(Spliterators.spliteratorUnknownSize(iterator, characteristics), false);
// }
}