Examples with ModelBuilder org.eclipse.rdf4j.model.util.ModelBuilder used on opensource projects

Example 6 with ModelBuilder

use of org.eclipse.rdf4j.model.util.ModelBuilder in project opentheso by miledrousset.

the class WriteRdf4j method loadModel.

private void loadModel() {
    builder = new ModelBuilder();
    builder.setNamespace("skos", "http://www.w3.org/2004/02/skos/core#");
    builder.setNamespace("dc", "http://purl.org/dc/elements/1.1/");
    builder.setNamespace("dcterms", "http://purl.org/dc/terms/");
    builder.setNamespace("geo", "http://www.w3.org/2003/01/geo/wgs84_pos#");
    builder.setNamespace("iso-thes", "http://purl.org/iso25964/skos-thes#");
    builder.setNamespace("opentheso", "http://purl.org/umu/uneskos#");
}

Example 7 with ModelBuilder

use of org.eclipse.rdf4j.model.util.ModelBuilder in project opentheso by miledrousset.

the class json_ld_first_test method start_test.

@Test
public void start_test() throws FileNotFoundException, IOException, JsonLdError {
    System.out.println("");
    System.out.println("");
    System.out.println("*******************************************************");
    System.out.println("*                     JSON LD                         *");
    System.out.println("*******************************************************");
    InputStream inputStream = new FileInputStream("input_test.json");
    // Read the file into an Object (The type of this object will be a List, Map, String, Boolean,
    // Number or null depending on the root object in the file).
    Object jsonObject = JsonUtils.fromInputStream(inputStream);
    // Create a context JSON map containing prefixes and definitions
    Map context = new HashMap();
    // Customise context...
    // Create an instance of JsonLdOptions with the standard JSON-LD options
    JsonLdOptions options = new JsonLdOptions();
    // Customise options...
    // Call whichever JSONLD function you want! (e.g. compact)
    Object compact = JsonLdProcessor.compact(jsonObject, context, options);
    // Print out the result (or don't, it's your call!)
    System.out.println(JsonUtils.toPrettyString(compact));
    System.out.println("*******************************************************");
    System.out.println("*                     org.JSON                        *");
    System.out.println("*******************************************************");
    inputStream = new FileInputStream("input_test.json");
    JSONObject obj = new JSONObject(IOUtils.toString(inputStream));
    System.out.println(obj.getString("name"));
    obj.put("test", "writeIsWorking");
    System.out.println(obj.getString("test"));
    System.out.println("");
    System.out.println(obj.toString());
    System.out.println("");
    System.out.println("*******************************************************");
    System.out.println("*                     RDJF WRITE                      *");
    System.out.println("*******************************************************");
    ValueFactory vf = SimpleValueFactory.getInstance();
    // Create a new RDF model containing information about the painting "The Potato Eaters"
    ModelBuilder builder = new ModelBuilder();
    Model model = builder.setNamespace("ex", "http://example.org/").subject("ex:PotatoEaters").add("ex:creationDate", vf.createLiteral("1885-04-01T00:00:00Z", XMLSchema.DATETIME)).add("ex:peopleDepicted", 5).build();
    Rio.write(model, System.out, RDFFormat.JSONLD);
    System.out.println("");
    System.out.println("");
    System.out.println("*******************************************************");
    System.out.println("*                     RDJF READ                       *");
    System.out.println("*******************************************************");
    inputStream = new FileInputStream("input_test.json");
    model = Rio.parse(inputStream, "", RDFFormat.JSONLD);
    Rio.write(model, System.out, RDFFormat.JSONLD);
    System.out.println("");
    for (Statement st : model) {
        // we want to see the object values of each statement
        Value value = st.getObject();
        IRI property = st.getPredicate();
        if (property.getLocalName().equals("name")) {
            Literal title = (Literal) value;
            System.out.println("name: " + title.getLabel());
        }
    }
    System.out.println("");
    System.out.println("");
    System.out.println("");
    System.out.println("");
}

Example 8 with ModelBuilder

use of org.eclipse.rdf4j.model.util.ModelBuilder in project opentheso by miledrousset.

the class WriteRdfFileTest method write4.

@Test
public void write4() {
    // We'll use a ModelBuilder to create two named graphs, one containing data about
    // picasso, the other about Van Gogh.
    ModelBuilder builder = new ModelBuilder();
    builder.setNamespace("ex", "http://example.org/");
    // in named graph 1, we add info about Picasso
    builder.namedGraph("ex:namedGraph1").subject("ex:Picasso").add(RDF.TYPE, "type1").add(FOAF.FIRST_NAME, "Pablo");
    // in named graph2, we add info about Van Gogh.
    builder.namedGraph("ex:namedGraph2").subject("ex:VanGogh").add(RDF.TYPE, "type2").add(FOAF.FIRST_NAME, "Vincent");
    // We're done building, create our Model
    Model model = builder.build();
    // each named graph is stored as a separate context in our Model
    for (Resource context : model.contexts()) {
        System.out.println("Named graph " + context + " contains: ");
        // write _only_ the statemements in the current named graph to the console, in N-Triples format
        Rio.write(model.filter(null, null, null, context), System.out, RDFFormat.NTRIPLES);
        System.out.println();
    }
    Rio.write(model, System.out, RDFFormat.RDFXML);
}