/**
* 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.system;
import static org.apache.jena.riot.RDFLanguages.JSONLD ;
import java.io.ByteArrayInputStream ;
import java.io.ByteArrayOutputStream ;
import java.util.Iterator;
import java.util.Map;
import org.apache.jena.atlas.junit.BaseTest ;
import org.apache.jena.riot.RDFDataMgr ;
import org.junit.Assert;
import org.junit.Test ;
import com.hp.hpl.jena.query.Dataset ;
import com.hp.hpl.jena.query.DatasetFactory ;
import com.hp.hpl.jena.rdf.model.Model ;
import com.hp.hpl.jena.rdf.model.ModelFactory ;
import com.hp.hpl.jena.sparql.lib.DatasetLib ;
import com.hp.hpl.jena.sparql.sse.SSE ;
/** tests : JSONLD->RDF ; JSONLD->RDF->JSONLD */
public class TestJsonLDReadWrite extends BaseTest
{
private static String DIR = "testing/RIOT/jsonld/" ;
@Test public void read_g01() { graphJ2R("graph1.jsonld", "graph1.ttl") ; }
@Test public void read_ds01() { datasetJ2R("graph1.jsonld", "graph1.ttl") ; }
@Test public void read_ds02() { datasetJ2R("dataset1.jsonld", "dataset1.trig") ; }
private void graphJ2R(String inFile, String outFile)
{
inFile = DIR+inFile ;
outFile = DIR+outFile ;
Model model1 = RDFDataMgr.loadModel(inFile) ;
Model model2 = RDFDataMgr.loadModel(outFile) ;
assertTrue(model1.isIsomorphicWith(model2)) ;
}
private void datasetJ2R(String inFile, String outFile)
{
inFile = DIR+inFile ;
outFile = DIR+outFile ;
Dataset ds1 = RDFDataMgr.loadDataset(inFile) ;
Dataset ds2 = RDFDataMgr.loadDataset(outFile) ;
}
@Test public void roundtrip_01() { rtRJRg("graph1.ttl") ; }
@Test public void roundtrip_02() { rtRJRds("graph1.ttl") ; }
@Test public void roundtrip_03() { rtRJRds("dataset1.trig") ; }
static void rtRJRg(String filename)
{
filename = DIR+filename ;
// Read in
Model model = RDFDataMgr.loadModel(filename) ;
// Write a JSON-LD
ByteArrayOutputStream out = new ByteArrayOutputStream() ;
RDFDataMgr.write(out, model, JSONLD) ;
ByteArrayInputStream r = new ByteArrayInputStream(out.toByteArray()) ;
// System.out.println();
// System.out.println(new String(out.toByteArray()));
// System.out.println();
// Read as JSON-LD
Model model2 = ModelFactory.createDefaultModel() ;
RDFDataMgr.read(model2, r, null, JSONLD) ;
// Compare
if ( ! model.isIsomorphicWith(model2) )
System.out.println("## ---- DIFFERENT") ;
assertTrue(model.isIsomorphicWith(model2));
// Check namespaces in parsed graph match the original data
checkNamespaces(model2, model.getNsPrefixMap());
}
static void rtRJRds(String filename)
{
filename = DIR+filename ;
Dataset ds1 = RDFDataMgr.loadDataset(filename) ;
// Write a JSON-LD
ByteArrayOutputStream out = new ByteArrayOutputStream() ;
RDFDataMgr.write(out, ds1, JSONLD) ;
ByteArrayInputStream r = new ByteArrayInputStream(out.toByteArray()) ;
// System.out.println();
// System.out.println(new String(out.toByteArray()));
// System.out.println();
// Read as JSON-LD
Dataset ds2 = DatasetFactory.createMem() ;
RDFDataMgr.read(ds2, r, null, JSONLD) ;
if ( ! isIsomorphic(ds1, ds2) )
{
SSE.write(ds1) ;
SSE.write(ds2) ;
}
assertTrue(isIsomorphic(ds1, ds2) ) ;
// Check namespaces in the parsed dataset match those in the original data
checkNamespaces(ds2.getDefaultModel(), ds1.getDefaultModel().getNsPrefixMap());
Iterator<String> graphNames = ds2.listNames();
while (graphNames.hasNext()) {
String gn = graphNames.next();
checkNamespaces(ds2.getNamedModel(gn), ds1.getNamedModel(gn).getNsPrefixMap());
}
}
private static boolean isIsomorphic(Dataset ds1, Dataset ds2)
{
return DatasetLib.isomorphic(ds1, ds2) ;
}
private static void checkNamespaces(Model m, Map<String, String> namespaces) {
if (namespaces == null) return;
for (String prefix : namespaces.keySet()) {
Assert.assertEquals("Model does contain expected namespace " + prefix + ": <" + namespaces.get(prefix) + ">", namespaces.get(prefix), m.getNsPrefixURI(prefix));
}
}
}