All right, let me explain why I need this. In my product, we let our users evaluate "custom" groovy expressions they construct. This is done in Java via groovy Script object. There are half a dozen "standard" product variables users can refer to in those expressions. The values of these variables are bound into Bindings object before the script is run. The values may be a String, a GPathResult, a java.util.Map, etc. The problem is that some of the variables are quite expensive to compute and it is a waste of time to do so if the expression does not reference these variables. For example, if the expression happens to be "${x}", I would be nice to only compute the value of x and bind it before invoking the script, not y, z, w, etc. That is why I was wondering if there was a simple way to get the list of all variables used in an expression. Another way to solve the problem would be some kind of "lazy evaluation" approach where we would bind all variables to some type of "proxy" object, such that the real values are only computed on "as needed" basis. I could not find an easy way to do that either. Some pointers would be very much appreciated Thanks in advance Greg
-- Sent from: http://groovy.329449.n5.nabble.com/Groovy-Dev-f372993.html