Examples of lupos.engine.operators.multiinput.Union

  public BasicOperator visit(final ASTNegatedPath node,
      final OperatorConnection connection, final Item graphConstraint,
      final Variable subject, final Variable object, final Node subjectNode, final Node objectNode) {


    final Minus minus = new Minus();
    final Union union = new Union();


    final Item[] items = {subject, this.getVariable(subject.toString(), object.toString(), "b"), object};
    final TriplePattern tp = new TriplePattern(items);
    final LinkedList<TriplePattern> temp = new LinkedList<TriplePattern>();
    temp.add(tp);
    this.indexScanCreator.createIndexScanAndConnectWithRoot(new OperatorIDTuple(minus,0), temp, graphConstraint);
    for (int i = 0; i < node.jjtGetNumChildren(); i++){
      final Item[] items2 = new Item[3];
      if(node.jjtGetChild(i) instanceof ASTInvers){
        items2[0] = object;
        items2[1] = getItem(node.jjtGetChild(i).jjtGetChild(0));
        items2[2] = subject;
      } else {
        items2[0] = subject;
        items2[1] = getItem(node.jjtGetChild(i));
        items2[2] = object;
      }
      final TriplePattern tp2 = new TriplePattern(items2);
      final LinkedList<TriplePattern> temp2 = new LinkedList<TriplePattern>();
      temp2.add(tp2);
      this.indexScanCreator.createIndexScanAndConnectWithRoot(new OperatorIDTuple(union,i), temp2, graphConstraint);
    }


    union.addSucceedingOperator(new OperatorIDTuple(minus,1));


    final Projection projection = new Projection();
    projection.addProjectionElement(subject);
    projection.addProjectionElement(object);
    if(graphConstraint!=null && graphConstraint.isVariable() && !graphConstraint.equals(getItem(subjectNode)) && !graphConstraint.equals(getItem(objectNode))) {

  public BasicOperator visit(final ASTPathAlternative node,
      final OperatorConnection connection, final Item graphConstraint,
      final Variable subject, final Variable object, final Node subjectNode, final Node objectNode) {
    final BasicOperator leftSide=node.jjtGetChild(0).accept(this, connection, graphConstraint, subject, object, subjectNode, objectNode);
    final BasicOperator rightSide = node.jjtGetChild(1).accept(this, connection, graphConstraint, subject, object, subjectNode, objectNode);
    final Union union = new Union();
    leftSide.addSucceedingOperator(new OperatorIDTuple(union,0));
    rightSide.addSucceedingOperator(new OperatorIDTuple(union,1));
    final Projection projection = new Projection();
    projection.addProjectionElement(subject);
    projection.addProjectionElement(object);
    if(graphConstraint!=null && graphConstraint.isVariable() && !graphConstraint.equals(getItem(subjectNode)) && !graphConstraint.equals(getItem(objectNode))) {
      projection.addProjectionElement((Variable)graphConstraint);
    }
    union.addSucceedingOperator(new OperatorIDTuple(projection,0));
    return projection;
  }

Examples of lupos.engine.operators.multiinput.Union

Related Classes of lupos.engine.operators.multiinput.Union