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

Example 31 with QueryIterator

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

the class ExecutionDispatch method visit.

@Override
public void visit(OpSlice opSlice) {
    QueryIterator input = pop();
    QueryIterator qIter = opExecutor.execute(opSlice, input);
    push(qIter);
}

Example 32 with QueryIterator

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

the class ExecutionDispatch method visit.

@Override
public void visit(OpDiff opDiff) {
    QueryIterator input = pop();
    QueryIterator qIter = opExecutor.execute(opDiff, input);
    push(qIter);
}

Example 33 with QueryIterator

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

the class ListBase method allLists.

protected QueryIterator allLists(Binding binding, Collection<Node> x, Var listVar, Node predicate, PropFuncArg argObject, ExecutionContext execCxt) {
    // BFI: Find all lists; work hard.
    QueryIterConcat qIter = new QueryIterConcat(execCxt);
    for (Node n : x) {
        Binding b = BindingFactory.binding(binding, listVar, n);
        QueryIterator q = execOneList(b, n, predicate, argObject, execCxt);
        qIter.add(q);
    }
    return qIter;
}

Example 34 with QueryIterator

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

the class container method execEvaluatedConcrete.

// Ask directly.
private QueryIterator execEvaluatedConcrete(Binding binding, Node containerNode, Node predicate, Node member, ExecutionContext execCxt) {
    QueryIterator input = QueryIterSingleton.create(binding, execCxt);
    Graph graph = execCxt.getActiveGraph();
    QueryIterator qIter = new QueryIterTriplePattern(input, new Triple(containerNode, predicate, member), execCxt);
    return qIter;
}

Example 35 with QueryIterator

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

the class QueryTest method unique.

private static ResultSetRewindable unique(ResultSetRewindable results) {
    // VERY crude.  Utilises the fact that bindings have value equality.
    List<Binding> x = new ArrayList<>();
    Set<Binding> seen = new HashSet<>();
    for (; results.hasNext(); ) {
        Binding b = results.nextBinding();
        if (seen.contains(b))
            continue;
        seen.add(b);
        x.add(b);
    }
    QueryIterator qIter = new QueryIterPlainWrapper(x.iterator());
    ResultSet rs = new ResultSetStream(results.getResultVars(), ModelFactory.createDefaultModel(), qIter);
    return ResultSetFactory.makeRewindable(rs);
}