@Test
/**
* Reads from TRIG with Jena API into Dataset 1, transforms one named graph from that Dataset into
* Signingframework's API GraphCollection and writes it with Signingframework's API, reads the
* result with Jena API into Dataset 2, and checks if the specified named graph model from Dataset
* 1 is isomorphic with the same named graph model from Dataset 2.
*/
public void modelToGraphCollectionTest() throws Exception {
for (String resourceFile : RESOURCE_FILES) {
// prepare the input Dataset containg the Model to be converted
InputStream is = this.getClass().getResourceAsStream(resourceFile);
File outFile = testFolder.newFile();
// use this when debugging:
// File outFile = File.createTempFile("won", ".trig");
// System.out.println(outFile);
Dataset dataset = DatasetFactory.createMem();
RDFDataMgr.read(dataset, is, RDFFormat.TRIG.getLang());
is.close();
// test the convertion from the Model to the NamedGraph
String modelName = dataset.listNames().next();
Model model = dataset.getNamedModel(modelName);
// the method to be tested
GraphCollection gc = ModelConverter.modelToGraphCollection(modelName, dataset);
TriGPlusWriter.writeFile(gc, outFile.getAbsolutePath(), false);
// check that the resulting graph collection is a representation
// of the converted model. For this, read the resulting graph collection
// as a Model with Jena API
InputStream is2 = new FileInputStream(outFile);
Dataset dataset2 = DatasetFactory.createMem();
RDFDataMgr.read(dataset2, is2, RDFFormat.TRIG.getLang());
is2.close();
Model model2 = dataset2.getNamedModel(modelName);
File outFile2 = testFolder.newFile();
// use this when debugging:
// File outFile2 = File.createTempFile("won", ".trig");
// System.out.println(outFile2);
OutputStream os = new FileOutputStream(outFile2);
RDFDataMgr.write(os, dataset2, RDFFormat.TRIG.getLang());
os.close();
// check that the model obtained from resulting graph collection is
// a representation of the original converted model.
Assert.assertTrue(model.listStatements().hasNext() && model2.listStatements().hasNext());
Assert.assertTrue(model.isIsomorphicWith(model2));
}
}
private static RdfStream getRdfStreamFromResource(final String resourcePath, final Lang lang) {
final Model model = createDefaultModel();
RDFDataMgr.read(model, WebACRolesProviderTest.class.getResourceAsStream(resourcePath), lang);
final List<Triple> triples = new ArrayList<>();
model
.listStatements()
.forEachRemaining(
x -> {
final Triple t = x.asTriple();
if (t.getObject().isURI() && t.getObject().getURI().startsWith(FEDORA_URI_PREFIX)) {
triples.add(
new Triple(
t.getSubject(),
t.getPredicate(),
createURI(
FEDORA_PREFIX
+ t.getObject().getURI().substring(FEDORA_URI_PREFIX.length()))));
} else {
triples.add(t);
}
});
return new RdfStream(triples);
}
@Test
/**
* Reads from TRIG with Jena API into Dataset 1, transforms one named Model from that Dataset into
* Signingframework's API GraphCollection with one NamedGraph, transforms (converts) that
* NamedGraph into Jena's Model, and checks if the resulting Model is the same as original Model.
*/
public void namedGraphToModelTest() throws Exception {
for (String resourceFile : RESOURCE_FILES) {
// prepare GraphCollection with NamedGraph to be converted:
InputStream is = this.getClass().getResourceAsStream(resourceFile);
Dataset dataset = DatasetFactory.createMem();
RDFDataMgr.read(dataset, is, RDFFormat.TRIG.getLang());
is.close();
String modelName = dataset.listNames().next();
Model model1 = dataset.getNamedModel(modelName);
// this method is not tested here and used just for input
// generation and to make it easier Namedgraph<->Model comparison
// (but it's tested in other method, see modelToGraphCollectionTest())
GraphCollection gc = ModelConverter.modelToGraphCollection(modelName, dataset);
LinkedList<NamedGraph> graphs = gc.getGraphs();
String graphName = null;
for (NamedGraph g : graphs) {
if (!g.getName().isEmpty() && g.getName().contains(modelName)) {
graphName = g.getName();
break;
}
}
// use this when debugging:
// File outFile0 = File.createTempFile("won", ".trig");
// System.out.println(outFile0);
// OutputStream os0 = new FileOutputStream(outFile0);
// TriGPlusWriter.writeFile(gc, outFile0.getAbsolutePath(), false);
// os0.close();
// test convert from NamedGraph of GraphCollection into Model
Model model2 = ModelConverter.namedGraphToModel(graphName, gc);
Dataset dataset2 = DatasetFactory.createMem();
dataset2.addNamedModel(modelName, model2);
// TODO maybe chng the API so that the prefix map is taken care of in the converter:
// if it makes sense from the the usage of this in Assembler point of view
dataset2.getDefaultModel().setNsPrefixes(dataset2.getNamedModel(modelName).getNsPrefixMap());
File outFile = testFolder.newFile();
// use this when debugging:
// File outFile = File.createTempFile("won", ".trig");
// System.out.println(outFile);
OutputStream os = new FileOutputStream(outFile);
RDFDataMgr.write(os, dataset2, RDFFormat.TRIG.getLang());
os.close();
// make sure that the original Model that was used to generate test input
// GraphCollection with NamedGraph is isomorphic with the Model after
// conversion is applied:
Assert.assertTrue(model1.listStatements().hasNext() && model2.listStatements().hasNext());
Assert.assertTrue(model1.isIsomorphicWith(model2));
}
}
public static DatasetGraph initFuseki(URL rdfFile, String datasetName) {
URI rdfFileUri = new File(rdfFile.getFile()).toURI();
DatasetGraph datasetGraph = DatasetGraphFactory.createMem();
RDFDataMgr.read(datasetGraph, rdfFileUri.toString());
ServerConfig serverConfig = FusekiConfig.defaultConfiguration(datasetName, datasetGraph, true);
SPARQLServer fusekiServer = new SPARQLServer(serverConfig);
Fuseki.setServer(fusekiServer);
fusekiServer.start();
return datasetGraph;
}
public static Model readModel(String modelFile) throws FileNotFoundException {
FileInputStream fin = null;
try {
Model model = ModelFactory.createDefaultModel();
fin = new FileInputStream(modelFile);
RDFDataMgr.read(model, fin, Lang.NT);
return model;
} finally {
IOUtils.closeQuietly(fin);
}
}
protected static Model jsonLdAsJenaModel(InputStream jsonIn, URI base)
throws IOException, RiotException {
Model model = ModelFactory.createDefaultModel();
RDFDataMgr.read(model, jsonIn, base.toASCIIString(), Lang.JSONLD);
return model;
//
// Object input = JSONUtils.fromInputStream(jsonIn);
// JSONLDTripleCallback callback = new JenaTripleCallback();
// Model model = (Model)JSONLD.toRDF(input, callback, new
// Options(base.toASCIIString()));
// return model;
}
/** Read the RDF model from files. */
public static void readSemanticModelFiles() {
logger.debug("Reading the model from a file");
// Read the model to an existing model
String dataDir = UQasarUtil.getDataDirPath();
String modelPath = "file:///" + dataDir + ONTOLOGYFILE;
// String modelPath =
// "file:///C:/nyrhinen/Programme/jboss-as-7.1.1.Final/standalone/data/uq-ontology-model.rdf";
OntModel model = ModelFactory.createOntologyModel(OntModelSpec.OWL_MEM);
RDFDataMgr.read(model, modelPath);
// Test output to standard output
// RDFDataMgr.write(System.out, uqModel, RDFFormat.RDFXML_PRETTY);
logger.debug("Model read from file " + modelPath);
UQasarUtil.setUqModel(model);
System.out.println("Reading done.");
}
/** Harvests all the triplets from each URI in the @rdfUris list */
private void harvestFromDumps() {
for (String uri : rdfUris) {
if (uri.isEmpty()) continue;
logger.info("Harvesting uri [{}]", uri);
Model model = ModelFactory.createDefaultModel();
try {
RDFDataMgr.read(model, uri.trim(), RDFLanguages.RDFXML);
BulkRequestBuilder bulkRequest = client.prepareBulk();
addModelToES(model, bulkRequest, true);
} catch (RiotException re) {
logger.error("Illegal xml character [{}]", re.getLocalizedMessage());
} catch (Exception e) {
logger.error(
"Exception when harvesting url: {}. Details: {}", uri, e.getLocalizedMessage());
}
}
}
