Looking for options to evaluate a decision tree

Hi,

I am currently looking into options to make use of KNIME for a rather small use case. We have a decision tree we want to evaluate but the use case (business case) is too small and isolated to buy and setup KNIME server. My idea was to train the tree, write a PMML file and then use a library within a REST service to make evaluations.

To my surprise there do not seem to be too many options at hand: so far I discovered SMILE which does not seem to read PMML files and JPMML(-Evaluator) . Has anyone ever used these in a similar environment? Are there options I missed?