Examples with Tuple org.apache.jena.atlas.lib.tuple.Tuple used on opensource projects

Example 26 with Tuple

use of org.apache.jena.atlas.lib.tuple.Tuple in project jena by apache.

the class TestIsoMatcher method testTripleTerms.

private static void testTripleTerms(String term1, String term2, boolean expected) {
    Node n1 = SSE.parseNode(term1);
    Node n2 = SSE.parseNode(term2);
    Collection<Tuple<Node>> x1 = Collections.singletonList(TupleFactory.create1(n1));
    Collection<Tuple<Node>> x2 = Collections.singletonList(TupleFactory.create1(n2));
    boolean b = IsoMatcher.isomorphic(x1, x2);
    if (b != expected) {
        System.out.println("====");
        System.out.println(n1);
        System.out.println("----");
        System.out.println(n2);
        System.out.println("Expected: " + expected + "; got: " + b);
    }
    assertEquals(expected, b);
}

Example 27 with Tuple

use of org.apache.jena.atlas.lib.tuple.Tuple in project jena by apache.

the class tdbstats method stats.

public static StatsResults stats(DatasetGraphTDB dsg, Node gn) {
    NodeTable nt = dsg.getTripleTable().getNodeTupleTable().getNodeTable();
    StatsCollectorNodeId stats = new StatsCollectorNodeId(nt);
    if (gn == null) {
        Iterator<Tuple<NodeId>> iter = dsg.getTripleTable().getNodeTupleTable().findAll();
        for (; iter.hasNext(); ) {
            Tuple<NodeId> t = iter.next();
            stats.record(null, t.get(0), t.get(1), t.get(2));
        }
    } else {
        // If the union graph, then we need to scan all quads but with uniqueness.
        boolean unionGraph = Quad.isUnionGraph(gn);
        NodeId gnid = null;
        if (!unionGraph) {
            gnid = nt.getNodeIdForNode(gn);
            if (NodeId.isDoesNotExist(gnid))
                Log.warn(tdbstats.class, "No such graph: " + gn);
        }
        NodeTupleTable ntt = dsg.getQuadTable().getNodeTupleTable();
        Iterator<Tuple<NodeId>> iter = unionGraph ? SolverLibTDB.unionGraph(ntt) : ntt.find(gnid, null, null, null);
        for (; iter.hasNext(); ) {
            Tuple<NodeId> t = iter.next();
            stats.record(t.get(0), t.get(1), t.get(2), t.get(3));
        }
    }
    return stats.results();
}

Example 28 with Tuple

use of org.apache.jena.atlas.lib.tuple.Tuple in project jena by apache.

the class SolverLibTDB method graphNames.

/**
 * Find all the graph names in the quads table.
 */
static QueryIterator graphNames(DatasetGraphTDB ds, Node graphNode, QueryIterator input, Predicate<Tuple<NodeId>> filter, ExecutionContext execCxt) {
    List<Abortable> killList = new ArrayList<>();
    Iterator<Tuple<NodeId>> iter1 = ds.getQuadTable().getNodeTupleTable().find(NodeId.NodeIdAny, NodeId.NodeIdAny, NodeId.NodeIdAny, NodeId.NodeIdAny);
    if (filter != null)
        iter1 = Iter.filter(iter1, filter);
    Iterator<NodeId> iter2 = Iter.map(iter1, t -> t.get(0));
    // Project is cheap - don't brother wrapping iter1
    iter2 = makeAbortable(iter2, killList);
    Iterator<NodeId> iter3 = Iter.distinct(iter2);
    iter3 = makeAbortable(iter3, killList);
    Iterator<Node> iter4 = NodeLib.nodes(ds.getQuadTable().getNodeTupleTable().getNodeTable(), iter3);
    final Var var = Var.alloc(graphNode);
    Iterator<Binding> iterBinding = Iter.map(iter4, node -> BindingFactory.binding(var, node));
    return new QueryIterAbortable(iterBinding, killList, input, execCxt);
}

Example 29 with Tuple

use of org.apache.jena.atlas.lib.tuple.Tuple in project jena by apache.

the class SolverLibTDB method testForGraphName.

/**
 * Find whether a specific graph name is in the quads table.
 */
static QueryIterator testForGraphName(DatasetGraphTDB ds, Node graphNode, QueryIterator input, Predicate<Tuple<NodeId>> filter, ExecutionContext execCxt) {
    NodeId nid = TDBInternal.getNodeId(ds, graphNode);
    boolean exists = !NodeId.isDoesNotExist(nid);
    if (exists) {
        // Node exists but is it used in the quad position?
        NodeTupleTable ntt = ds.getQuadTable().getNodeTupleTable();
        // Don't worry about abortable - this iterator should be fast
        // (with normal indexing - at least one G???).
        // Either it finds a starting point, or it doesn't.  We are only
        // interested in the first .hasNext.
        Iterator<Tuple<NodeId>> iter1 = ntt.find(nid, NodeId.NodeIdAny, NodeId.NodeIdAny, NodeId.NodeIdAny);
        if (filter != null)
            iter1 = Iter.filter(iter1, filter);
        exists = iter1.hasNext();
    }
    if (exists)
        return input;
    else {
        input.close();
        return QueryIterNullIterator.create(execCxt);
    }
}

Example 30 with Tuple

use of org.apache.jena.atlas.lib.tuple.Tuple in project jena by apache.

the class StageGeneratorDirectTDB method execute.

@Override
public QueryIterator execute(BasicPattern pattern, QueryIterator input, ExecutionContext execCxt) {
    // --- In case this isn't for TDB2
    Graph g = execCxt.getActiveGraph();
    if (g instanceof GraphViewSwitchable) {
        GraphViewSwitchable gvs = (GraphViewSwitchable) g;
        g = gvs.getBaseGraph();
    }
    if (!(g instanceof GraphTDB))
        // Not us - bounce up the StageGenerator chain
        return above.execute(pattern, input, execCxt);
    GraphTDB graph = (GraphTDB) g;
    Predicate<Tuple<NodeId>> filter = QC2.getFilter(execCxt.getContext());
    return PatternMatchTDB2.execute(graph, pattern, input, filter, execCxt);
}