Examples with Dataset org.apache.jena.query.Dataset used on opensource projects

Example 91 with Dataset

use of org.apache.jena.query.Dataset in project jena by apache.

the class TestDatasetTDBPersist method dataset4.

@Test
public void dataset4() {
    String graphName = "http://example/";
    Triple triple = SSE.parseTriple("(<x> <y> <z>)");
    Node gn = org.apache.jena.graph.NodeFactory.createURI(graphName);
    Dataset ds = graphLocation.getDataset();
    // ?? See TupleLib.
    ds.asDatasetGraph().deleteAny(gn, null, null, null);
    Graph g2 = ds.asDatasetGraph().getGraph(gn);
    //        if ( true )
    //        {
    //            PrintStream ps = System.err ;
    //            ps.println("Dataset names: ") ;
    //            Iter.print(ps, ds.listNames()) ;
    //        }
    // Graphs only exists if they have a triple in them
    assertFalse(ds.containsNamedModel(graphName));
    List<String> names = Iter.toList(ds.listNames());
    assertEquals(0, names.size());
    assertEquals(0, ds.asDatasetGraph().size());
}

Example 92 with Dataset

use of org.apache.jena.query.Dataset in project jena by apache.

the class textindexer method processModulesAndArgs.

@Override
protected void processModulesAndArgs() {
    super.processModulesAndArgs();
    // Two forms : with and without arg.
    // Maximises similarity with other tools.
    String file;
    if (!super.contains(assemblerDescDecl) && getNumPositional() == 0)
        throw new CmdException("No assembler description given");
    if (super.contains(assemblerDescDecl)) {
        if (getValues(assemblerDescDecl).size() != 1)
            throw new CmdException("Multiple assembler descriptions given via --desc");
        if (getPositional().size() != 0)
            throw new CmdException("Additional assembler descriptions given");
        file = getValue(assemblerDescDecl);
    } else {
        if (getNumPositional() != 1)
            throw new CmdException("Multiple assembler descriptions given as positional arguments");
        file = getPositionalArg(0);
    }
    if (file == null)
        throw new CmdException("No dataset specified");
    // Assumes a single test dataset description in the assembler file.
    Dataset ds = TextDatasetFactory.create(file);
    if (ds == null)
        throw new CmdException("No dataset description found");
    // get index.
    dataset = (DatasetGraphText) (ds.asDatasetGraph());
    textIndex = dataset.getTextIndex();
    if (textIndex == null)
        throw new CmdException("Dataset has no text index");
    entityDefinition = textIndex.getDocDef();
}

Example 93 with Dataset

use of org.apache.jena.query.Dataset in project jena by apache.

the class TextDatasetAssembler method open.

/*
<#text_dataset> rdf:type     text:Dataset ;
    text:dataset <#dataset> ;
    text:index   <#index> ;
    .

     */
@Override
public Dataset open(Assembler a, Resource root, Mode mode) {
    Resource dataset = GraphUtils.getResourceValue(root, pDataset);
    Resource index = GraphUtils.getResourceValue(root, pIndex);
    Resource textDocProducerNode = GraphUtils.getResourceValue(root, pTextDocProducer);
    Dataset ds = (Dataset) a.open(dataset);
    TextIndex textIndex = (TextIndex) a.open(index);
    // Null will use the default producer
    TextDocProducer textDocProducer = null;
    if (null != textDocProducerNode) {
        Class<?> c = Loader.loadClass(textDocProducerNode.getURI(), TextDocProducer.class);
        String className = textDocProducerNode.getURI().substring(ARQConstants.javaClassURIScheme.length());
        Constructor<?> dyadic = getConstructor(c, DatasetGraph.class, TextIndex.class);
        Constructor<?> monadic = getConstructor(c, TextIndex.class);
        try {
            if (dyadic != null) {
                textDocProducer = (TextDocProducer) dyadic.newInstance(ds.asDatasetGraph(), textIndex);
            } else if (monadic != null) {
                textDocProducer = (TextDocProducer) monadic.newInstance(textIndex);
            } else {
                Log.warn(Loader.class, "Exception during instantiation '" + className + "' no TextIndex or DatasetGraph,Index constructor");
            }
        } catch (Exception ex) {
            Log.warn(Loader.class, "Exception during instantiation '" + className + "': " + ex.getMessage());
            return null;
        }
    }
    Dataset dst = TextDatasetFactory.create(ds, textIndex, true, textDocProducer);
    return dst;
}

Example 94 with Dataset

use of org.apache.jena.query.Dataset in project jena by apache.

the class TestTextDatasetAssembler method testCustomTextDocProducerDyadicConstructor.

@Test
public void testCustomTextDocProducerDyadicConstructor() {
    Dataset dataset = (Dataset) Assembler.general.open(customDyadicTextDocProducerSpec);
    DatasetGraphText dsgText = (DatasetGraphText) dataset.asDatasetGraph();
    assertTrue(dsgText.getMonitor() instanceof CustomDyadicTextDocProducer);
    Node G = NodeFactory.createURI("http://example.com/G");
    Node S = NodeFactory.createURI("http://example.com/S");
    Node P = NodeFactory.createURI("http://example.com/P");
    Node O = NodeFactory.createLiteral("http://example.com/O");
    dsgText.begin(ReadWrite.WRITE);
    dsgText.add(G, S, P, O);
    dsgText.commit();
    dataset.close();
}

Example 95 with Dataset

use of org.apache.jena.query.Dataset in project jena by apache.

the class TestTextDatasetAssembler method testCustomTextDocProducer.

@Test
public void testCustomTextDocProducer() {
    Dataset dataset = (Dataset) Assembler.general.open(customTextDocProducerSpec);
    DatasetGraphText dsgText = (DatasetGraphText) dataset.asDatasetGraph();
    assertTrue(dsgText.getMonitor() instanceof CustomTextDocProducer);
    dataset.close();
}