this.predicateIndex = new PredicateIndexScan();
this.indexScanCreator.getRoot().addSucceedingOperator(new OperatorIDTuple(this.predicateIndex, this.indexScanCreator.getRoot().getSucceedingOperators().size()));
this.predicateIndex.addPrecedingOperator(this.indexScanCreator.getRoot());
}
this.predicateIndex.addSucceedingOperator(new OperatorIDTuple(predPat, this.predicateIndex.getSucceedingOperators().size()));
predPat.addPrecedingOperator(this.predicateIndex);
if(arg!=null){
predPat.setSucceedingOperator((OperatorIDTuple) arg);
((OperatorIDTuple) arg).getOperator().addPrecedingOperator(predPat);
}
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