return ((PredicateImpl)nil).toKernelExpression(factory, q);
}
if (_exps.size() == 1) {
Predicate e0 = _exps.get(0);
if (isNegated())
e0 = e0.negate();
return ((PredicateImpl)e0).toKernelExpression(factory, q);
}
ExpressionImpl<?> e1 = (ExpressionImpl<?>)_exps.get(0);
ExpressionImpl<?> e2 = (ExpressionImpl<?>)_exps.get(1);