>From glancing at the source, I think you should be able to do what you want with clojure.core/*data-readers* and/or clojure.core/*default-data-readers-fn*.
http://clojure.github.io/clojure/clojure.core-api.html#clojure.core/*data-readers* It is not clearly documented that the edn reader checks them, so maybe it won't be reliable across versions. On Wednesday, 17 June 2015, Surgo <morgon.kan...@gmail.com> wrote: > I've been working on a Ring app that involves storing sessions as cookies, > and within the session there are a couple Java objects that implement > java.io.Serializable. I was somewhat surprised to find that the print-dup > multimethod didn't have native support for Java Serializables, though I can > understand why (they aren't really meant for long-term storage because > version changes are troublesome). It wasn't too much trouble to come up > with a basic implementation that could cover all of java.io.Serializable: > https://bitbucket.org/snippets/morgon/jkjyA > > The trouble I'm having comes with reading it back in, though. In the above > snippet, we output as a function call and depend on the behavior of > clojure.core/read{,-string} to evaluate the function where the magic > happens. This obviously doesn't work with the safer and recommended > clojure.edn/read{,-string}. According to the EDN specification I should be > able to set a dispatch tag like, say, "#java <base64>" and attach a > deserialization function to :readers for the tag. This isn't transparent > though: I can't just include the library and have it work with Ring's > already-existing (de)serialization, nor anywhere else that doesn't > explicitly pass my special function to clojure.edn/read{,-string}. > > Is there anything I can do without filing a ticket and hoping something > comes to be a part of the core library? To the best of my knowledge there's > no binding I can alter for the :readers or :default options for > clojure.edn/read{,-string}; that needs to be passed directly into the > function at the call site. I could maybe alter the clojure.edn/read and > clojure.edn/read-string vars themselves to wrap them so I can pass in a > :readers option with my tag, though that seems kind of nasty and I'm not > sure it will work in 100% of cases. What is there that can be done for this > problem? > > Thanks, > -- Morgon > > -- > 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 > <javascript:_e(%7B%7D,'cvml','clojure@googlegroups.com');> > Note that posts from new members are moderated - please be patient with > your first post. > To unsubscribe from this group, send email to > clojure+unsubscr...@googlegroups.com > <javascript:_e(%7B%7D,'cvml','clojure%2bunsubscr...@googlegroups.com');> > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en > --- > You received this message because you are subscribed to the Google Groups > "Clojure" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to clojure+unsubscr...@googlegroups.com > <javascript:_e(%7B%7D,'cvml','clojure%2bunsubscr...@googlegroups.com');>. > For more options, visit https://groups.google.com/d/optout. > -- 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 Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
