Examples with GraphUnionRead org.apache.jena.sparql.graph.GraphUnionRead used on opensource projects

Example 1 with GraphUnionRead

use of org.apache.jena.sparql.graph.GraphUnionRead in project jena by apache.

the class TestGraphUnionRead method gr_union_05.

@Test
public void gr_union_05() {
    List<Node> gnodes = list();
    Graph g = new GraphUnionRead(dsg, gnodes);
    long x = Iter.count(g.find(null, null, null));
    assertEquals(0, x);
}

Example 2 with GraphUnionRead

use of org.apache.jena.sparql.graph.GraphUnionRead in project jena by apache.

the class TestGraphUnionRead method gr_union_02.

@Test
public void gr_union_02() {
    List<Node> gnodes = list(gn1, gn2);
    Graph g = new GraphUnionRead(dsg, gnodes);
    Node s = NodeFactory.createURI("http://example/s");
    long x = Iter.count(g.find(s, null, null));
    assertEquals(3, x);
}

Example 3 with GraphUnionRead

use of org.apache.jena.sparql.graph.GraphUnionRead in project jena by apache.

the class DynamicDatasets method dynamicDataset.

/** Given a DatasetGraph and a query, form a DatasetGraph that 
     * is the dynamic dataset from the collection of graphs from the dataset
     * that go to make up the default graph (union) and named graphs.  
     */
public static DatasetGraph dynamicDataset(Collection<Node> defaultGraphs, Collection<Node> namedGraphs, DatasetGraph dsg, boolean defaultUnionGraph) {
    Graph dft = new GraphUnionRead(dsg, defaultGraphs);
    DatasetGraph dsg2 = new DatasetGraphMapLink(dft);
    // The named graphs.
    for (Node gn : namedGraphs) {
        Graph g = GraphOps.getGraph(dsg, gn);
        if (g != null)
            dsg2.addGraph(gn, g);
    }
    if (dsg.getContext() != null)
        dsg2.getContext().putAll(dsg.getContext());
    if (defaultUnionGraph && defaultGraphs.size() == 0) {
        // Create a union graph - there were no defaultGraphs explicitly named.
        Graph unionGraph = new GraphUnionRead(dsg, namedGraphs);
        dsg2.setDefaultGraph(unionGraph);
    }
    // read-only, <urn:x-arq:DefaultGraph> and <urn:x-arq:UnionGraph> processing.
    dsg2 = new DynamicDatasetGraph(dsg2);
    // Record what we've done.
    // c.f. "ARQConstants.sysDatasetDescription" which is used to pass in a  DatasetDescription
    dsg2.getContext().set(ARQConstants.symDatasetDefaultGraphs, defaultGraphs);
    dsg2.getContext().set(ARQConstants.symDatasetNamedGraphs, namedGraphs);
    return dsg2;
}

Example 4 with GraphUnionRead

use of org.apache.jena.sparql.graph.GraphUnionRead in project jena by apache.

the class TestGraphUnionRead method gr_union_06.

@Test
public void gr_union_06() {
    List<Node> gnodes = list(gn1, gn1);
    Graph g = new GraphUnionRead(dsg, gnodes);
    long x = Iter.count(g.find(null, null, null));
    assertEquals(2, x);
}

Example 5 with GraphUnionRead

use of org.apache.jena.sparql.graph.GraphUnionRead in project jena by apache.

the class TestGraphUnionRead method gr_union_03.

@Test
public void gr_union_03() {
    List<Node> gnodes = list(gn1, gn2, gn9);
    Graph g = new GraphUnionRead(dsg, gnodes);
    Node o = NodeFactory.createLiteral("g2");
    long x = Iter.count(g.find(null, null, o));
    assertEquals(1, x);
}