I too was unaware of this aspect of Digester (apparently it was added in the latest release.) I agree with Joe's take that it appears to be only helpful during the initial parsing of the rules.
I have dealt with something similar myself. Basically I had some XML template that I wrote to convert into PDF's. We used Apache FOP to do this but that's not really relevant. The point was that we would have things in the template that needed to be determined at runtime (such as a person's name and contact information.) The way we solved this was using Jakarta's Velocity. Basically we had a utility class with a method like this: public static String getText(String template, Map context) throws Exception { StringWriter writer = new StringWriter(); // setup velocity Velocity.init(); VelocityContext velocityContext = new VelocityContext(context); writer = new StringWriter(); Velocity.evaluate(velocityContext, writer, "", template); return writer.toString(); } The velocity engine did everything for you. If your text did not have velocity markup in it, no harm done, it just ignores it. Maybe we could use something like this. Also, VelocityContext really just wraps a HashMap, so it might be possible to take advantage of the chain's Context object. sean > I hadn't seen that -- and it's very cool! > > But a quick look leads me to believe that it would be evaluated only > once, at XML ingestion time, while in the context I'm thinking of, > the value of the expression would be dependent on the runtime state > of the context. With Chain, I think that would be very powerful. > > Joe > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]