Examples with ExecutionContext org.apache.jena.sparql.engine.ExecutionContext used on opensource projects

Example 16 with ExecutionContext

use of org.apache.jena.sparql.engine.ExecutionContext in project jena by apache.

the class SolverRX method find.

private static Iterator<BindingNodeId> find(BindingNodeId bnid, NodeTupleTable nodeTupleTable, Node xGraphNode, Triple xPattern, boolean anyGraph, Predicate<Tuple<NodeId>> filter, ExecutionContext execCxt) {
    NodeTable nodeTable = nodeTupleTable.getNodeTable();
    Binding input = bnid.isEmpty() ? BindingFactory.empty() : new BindingTDB(bnid, nodeTable);
    Triple tPattern = Substitute.substitute(xPattern, input);
    Node graphNode = Substitute.substitute(xGraphNode, input);
    Node tGraphNode = anyGraph ? Quad.unionGraph : graphNode;
    // graphNode is ANY for union graph and null for default graph.
    // Var to ANY, Triple Term to ANY.
    Node g = (graphNode == null) ? null : nodeTopLevel(graphNode);
    Node s = nodeTopLevel(tPattern.getSubject());
    Node p = nodeTopLevel(tPattern.getPredicate());
    Node o = nodeTopLevel(tPattern.getObject());
    Tuple<Node> patternTuple = (g == null) ? TupleFactory.create3(s, p, o) : TupleFactory.create4(g, s, p, o);
    Iterator<Quad> dsgIter = accessData(patternTuple, nodeTupleTable, anyGraph, filter, execCxt);
    Iterator<Binding> matched = Iter.iter(dsgIter).map(dQuad -> SolverRX4.matchQuad(input, dQuad, tGraphNode, tPattern)).removeNulls();
    return convFromBinding(matched, nodeTable);
}

Example 17 with ExecutionContext

use of org.apache.jena.sparql.engine.ExecutionContext in project jena by apache.

the class OpExecutorTDB2 method plainExecute.

/**
 * Execute without modification of the op - does <b>not</b> apply special graph name translations
 */
private static QueryIterator plainExecute(Op op, QueryIterator input, ExecutionContext execCxt) {
    // -- Execute
    // Switch to a non-reordering executor
    // The Op may be a sequence due to TransformFilterPlacement
    // so we need to do a full execution step, not go straight to the SolverLib.
    ExecutionContext ec2 = new ExecutionContext(execCxt);
    ec2.setExecutor(plainFactory);
    // so there are no nested patterns to reorder.
    return QC.execute(op, input, ec2);
}

Example 18 with ExecutionContext

use of org.apache.jena.sparql.engine.ExecutionContext in project jena by apache.

the class SpatialIndex method retrieve.

/**
 * Retrieve the SpatialIndex from the Context.
 *
 * @param execCxt
 * @return SpatialIndex contained in the Context.
 * @throws SpatialIndexException
 */
public static final SpatialIndex retrieve(ExecutionContext execCxt) throws SpatialIndexException {
    Context context = execCxt.getContext();
    SpatialIndex spatialIndex = (SpatialIndex) context.get(SPATIAL_INDEX_SYMBOL, null);
    if (spatialIndex == null) {
        throw new SpatialIndexException("Dataset Context does not contain SpatialIndex.");
    }
    return spatialIndex;
}

Example 19 with ExecutionContext

use of org.apache.jena.sparql.engine.ExecutionContext in project jena by apache.

the class SolverRX method find.

private static Iterator<BindingNodeId> find(BindingNodeId bnid, NodeTupleTable nodeTupleTable, Node xGraphNode, Triple xPattern, boolean anyGraph, Predicate<Tuple<NodeId>> filter, ExecutionContext execCxt) {
    NodeTable nodeTable = nodeTupleTable.getNodeTable();
    Binding input = bnid.isEmpty() ? BindingFactory.empty() : new BindingTDB(bnid, nodeTable);
    Triple tPattern = Substitute.substitute(xPattern, input);
    Node graphNode = Substitute.substitute(xGraphNode, input);
    Node tGraphNode = anyGraph ? Quad.unionGraph : graphNode;
    // graphNode is ANY for union graph and null for default graph.
    // Var to ANY, Triple Term to ANY.
    Node g = (graphNode == null) ? null : nodeTopLevel(graphNode);
    Node s = nodeTopLevel(tPattern.getSubject());
    Node p = nodeTopLevel(tPattern.getPredicate());
    Node o = nodeTopLevel(tPattern.getObject());
    Tuple<Node> patternTuple = (g == null) ? TupleFactory.create3(s, p, o) : TupleFactory.create4(g, s, p, o);
    Iterator<Quad> dsgIter = accessData(patternTuple, nodeTupleTable, anyGraph, filter, execCxt);
    Iterator<Binding> matched = Iter.iter(dsgIter).map(dQuad -> SolverRX4.matchQuad(input, dQuad, tGraphNode, tPattern)).removeNulls();
    return convFromBinding(matched, nodeTable);
}

Example 20 with ExecutionContext

use of org.apache.jena.sparql.engine.ExecutionContext in project jena by apache.

the class OpExecutorTDB1 method plainExecute.

/**
 * Execute without modification of the op - does <b>not</b> apply special graph name translations
 */
private static QueryIterator plainExecute(Op op, QueryIterator input, ExecutionContext execCxt) {
    // -- Execute
    // Switch to a non-reordering executor
    // The Op may be a sequence due to TransformFilterPlacement
    // so we need to do a full execution step, not go straight to the SolverLib.
    ExecutionContext ec2 = new ExecutionContext(execCxt);
    ec2.setExecutor(plainFactory);
    // so there are no nested patterns to reorder.
    return QC.execute(op, input, ec2);
}