Package lupos.engine.operators.multiinput.mergeunion

Examples of lupos.engine.operators.multiinput.mergeunion.MergeUnion.cloneFrom()

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      llbo.addAll(basicOperator.getPrecedingOperators());
      for (final BasicOperator before : llbo) {
        operatorMustReceiveSortedData(root, before, sortCriterium);
      }
      final BasicOperator newOperator = new MergeUnion(sortCriterium);
      newOperator.cloneFrom(basicOperator);
      basicOperator.replaceWith(newOperator);
      return true;
    } else if (basicOperator.getClass() == MergeJoinWithoutSorting.class
        || basicOperator.getClass() == MergeWithoutSortingOptional.class
        || basicOperator.getClass() == FastSort.class) {
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      return true;
    } else if (basicOperator.getClass() == Optional.class) {
      if(basicOperator.getIntersectionVariables().containsAll(sortCriterium)) {
        if(basicOperator.getPrecedingOperators().size() == 2) {
          final BasicOperator newOperator = new MergeWithoutSortingOptional();
          newOperator.cloneFrom(basicOperator);
          basicOperator.replaceWith(newOperator);
          return   operatorMustReceiveSortedData(root, basicOperator.getPrecedingOperators().get(0), sortCriterium) &&
              operatorMustReceiveSortedData(root, basicOperator.getPrecedingOperators().get(1), sortCriterium);
        }
      }
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