secondProjection.addSucceedingOperator(connection.getOperatorIDTuple());
thirdProjection.addSucceedingOperator(new OperatorIDTuple(fourthFilter, 0));
fourthProjection.addSucceedingOperator(connection.getOperatorIDTuple());
replaceVari.addSucceedingOperator(new OperatorIDTuple(thirdFilter,0));
replaceVari.removeSucceedingOperator(connection.getOperatorIDTuple().getOperator());
startingOperator.addSucceedingOperator(new OperatorIDTuple(firstFilter,0));
startingOperator.removeSucceedingOperator(connection.getOperatorIDTuple().getOperator());
}
}