Examples of lupos.engine.operators.singleinput.path.PathLengthZero

        // If there is a fixed subject or object, then we should consider it during evaluation!
        allowedSubjects = this.getSetOfLiterals(subjectNode);
        allowedObjects = this.getSetOfLiterals(objectNode);
      }


      final PathLengthZero zeroOperator = new PathLengthZero(subject, object, allowedSubjects, allowedObjects);
      memoryScan.addSucceedingOperator(new OperatorIDTuple(zeroOperator,0));


      final Union union = new Union();
      zeroOperator.addSucceedingOperator(new OperatorIDTuple(union,0));
      startingOperator.addSucceedingOperator(new OperatorIDTuple(union,1));


      final InMemoryDistinct distinct = new InMemoryDistinct();
      union.addSucceedingOperator(new OperatorIDTuple(distinct,0));

      final TriplePattern tp = new TriplePattern(items);
      final LinkedList<TriplePattern> temp = new LinkedList<TriplePattern>();
      temp.add(tp);
      final BasicOperator memoryScan = this.indexScanCreator.createIndexScanAndConnectWithRoot(null, temp, graphConstraint);


      final PathLengthZero zeroOperator = new PathLengthZero(subject, object, allowedSubjects, allowedObjects);
      memoryScan.addSucceedingOperator(new OperatorIDTuple(zeroOperator,0));


      final Union union = new Union();
      zeroOperator.addSucceedingOperator(new OperatorIDTuple(union,0));
      startingOperator.removeSucceedingOperator(closure);
      startingOperator.addSucceedingOperator(new OperatorIDTuple(union,1));
      union.addSucceedingOperator(new OperatorIDTuple(closure,0));


      return closure;

Related Classes of lupos.engine.operators.singleinput.path.PathLengthZero

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