Examples of lupos.engine.operators.index.EmptyIndexScan

        // Root verweist auf EmptyIndex und der direkt auf Result
        if (finalResult instanceof PredicatePattern || finalResult instanceof TriplePattern) {
          finalResult.removeFromOperatorGraph();
          finalResult = null;
        }
        final EmptyIndexScan empty = new EmptyIndexScan(finalResult == null ? null : new OperatorIDTuple(finalResult, 0));
        this.indexScanCreator.getRoot().addSucceedingOperator(new OperatorIDTuple(empty, this.indexScanCreator.getRoot().getSucceedingOperators().size()));
        empty.addPrecedingOperator(this.indexScanCreator.getRoot());
        if (finalResult == null) {
          finalResults[i] = empty;
        }
      }
    }

    this.root.getSucceedingOperators().add(new OperatorIDTuple(new EmptyIndexScanSubmittingQueryResultWithOneEmptyBindings(opID, graphConstraint, this.root), 0));
  }


  @Override
  public void createEmptyIndexScanAndConnectWithRoot(final OperatorIDTuple opID) {
    this.root.getSucceedingOperators().add(new OperatorIDTuple(new EmptyIndexScan(opID), 0));
  }

Related Classes of lupos.engine.operators.index.EmptyIndexScan

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