if (isBLOCKWISE()) {
maybequeryresultinblocks = new QueryResultInBlocks();
added.add(maybequeryresultinblocks);
par.setSucceedingOperator(new OperatorIDTuple(
maybequeryresultinblocks, 0));
maybequeryresultinblocks.addPrecedingOperator(par);
} else {
maybequeryresultinblocks = par;
}
tuple = op.getOperatorIDTuple(join);
op.replaceOperatorIDTuple(tuple, new OperatorIDTuple(par, 0));