switch (complexNode.getOp())
{
case QueryModelComplexNode.COMPLEX_OP_AND:
rpnOp.op.which = Operator_type.and_CID;
rpnOp.op.o = new AsnNull();
break;
case QueryModelComplexNode.COMPLEX_OP_OR:
rpnOp.op.which = Operator_type.or_CID;
rpnOp.op.o = new AsnNull();
break;
case QueryModelComplexNode.COMPLEX_OP_ANDNOT:
rpnOp.op.which = Operator_type.and_not_CID;
rpnOp.op.o = new AsnNull();
break;
case QueryModelComplexNode.COMPLEX_OP_PROX:
logger.warn("Prox-Op not yet handled");