Using digest string as for pattern

[Ravi Nallappan]

Hi,

Within onMatch() for ProjectRel, is it intended to use digest string (via
toString) to lookup content of RexNode tree or its advisable to traverse
through the nodes instead for the purpose?

if (n instanceof RexCall && n.toString().compareTo("+(4, 2)") == 0) {...}

Thanks & Regards,
Ravi Nallappan