Hi On Thu, Nov 20, 2008 at 12:10 AM, Chouser <[EMAIL PROTECTED]> wrote: > > On Wed, Nov 19, 2008 at 4:00 AM, Michael Wood <[EMAIL PROTECTED]> wrote: >> >> Exception in thread "main" java.lang.IllegalArgumentException: No >> matching method found: getString for class >> org.dcm4che2.data.BasicDicomObject (dinfo.clj:0) > > This was discussed on IRC: > > http://clojure-log.n01se.net/date/2008-11-19.html#15:46a-16:07 > > So it looks like there may be no good, general, solution. Unless or > until there is, there's a work-around using reflection manually. > > Start by getting a reference to the Method you're trying to call: > > (def bdo-get-string (.getMethod (identity BasicDicomObject) > "getString" (into-array [Integer/TYPE])))
Thanks. That works fine. I'll use that in the mean time. > The three args to .getMethods are: > 1. The class (use identity to get the instance of Class instead of > trying to BasicDicomObject's non-existent getMethod method) > 2. The name of the method as a string, "getString" > 3. An array of the argument types for the method you want to call. > Use Interger/TYPE to specify the primitive 'int' > > You can then call the method you found above using the .invoke method > of the Method instance: > > (.invoke bdo-get-string (BasicDicomObject.) (to-array [0x00100010])) > > The .invoke method always takes 3 args: > 1. The Method instance we got earlier > 2. The instance of the class you want call (in this example I created > a new instance on the spot) > 3. And array holding all the args to pass to the Method. Thanks for the explanation. > Not too pretty, but of course if you find you actually need this you > can wrap either step in a function to make calling it more pleasant. Yes, I've changed print-tag from: (defn print-tag [dcm tag] (.getString dcm tag)) to: (defn print-tag [dcm tag] (def bdo-get-string (.getMethod (identity BasicDicomObject) "getString" (into-array [Integer/TYPE]))) (.invoke bdo-get-string dcm (to-array [tag]))) -- Michael Wood <[EMAIL PROTECTED]> --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/clojure?hl=en -~----------~----~----~----~------~----~------~--~---
