break;
case SpeedoQLConstants.GT:
ret = new Greater((Expression) child1, (Expression) child2);
break;
case SpeedoQLConstants.GTE:
ret = new GreaterEqual((Expression) child1, (Expression) child2);
break;
case SpeedoQLConstants.LTE:
ret = new LowerEqual((Expression) child1, (Expression) child2);
break;
}