Sean, Thanks for the response.
The issues that I've come across using code similar to yours is that if there are two people sharing the same namespace, they will over-write each others' stuff. I guess I'll wait for 1.6 unless others have ideas. Thanks, David On Tue, Aug 20, 2013 at 1:55 PM, Sean Corfield <seancorfi...@gmail.com>wrote: > Just FYI (and you probably already know this David), most of the > clojure.lang.RT class is considered an implementation detail and is > subject to change without notice. I believe 1.6 will bring a new API > that is intended to provide a supported way to embed Clojure into > JVM-based applications. > > Based on posts I've seen on the mailing lists from Clojure/core folks, > I've restricted my use to just RT.var() and I load source files like > this: > > RT.var( "clojure.core", "load" ).invoke( filepath ); > > RT.var( "my.namespace", "my-fun" ).invoke( 1, 2, 3 ); // > (my.namespace/my-fun 1 2 3) > > RT.var( "my.namespace", "my-var" ).deref(); // access > my.namespace/my-var directly > // same as (deref #'my.namespace/my-var) > > I haven't pushed too much at the boundaries of classloaders tho' so > there may well be dragons there, but the above works for me for > embedding Clojure in an existing JVM-based web application. > > Sean > > > On Tue, Aug 20, 2013 at 1:35 PM, David Pollak > <feeder.of.the.be...@gmail.com> wrote: > > Howdy, > > > > I have an application where I need multiple independent Clojure contexts > > running in the same JVM. > > > > I've played around with a custom classloader, but when I try to eval code > > (calling RT.eval.invoke via reflection), I wind up with: > > > > java.lang.ClassCastException: clojure.core$eval1 cannot be cast to > > clojure.lang.IFn > > > > > > It seems that someplace the clojure.lang.IFn interface is being loaded > > around my classloader. > > > > Can someone point me to a way to run multiple Clojure contexts in the > same > > JVM? > > > > Thanks, > > > > David > > > > PS -- Interestingly, invoking RT.loadResourceScript via reflection works > > just fine... so my current workaround is to do that... but it's less than > > optimal. > > > > -- > > Telegram, Simply Beautiful CMS https://telegr.am > > Lift, the simply functional web framework http://liftweb.net > > Follow me: http://twitter.com/dpp > > Blog: http://goodstuff.im > > > > -- > > -- > > 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/groups/opt_out. > > > > -- > Sean A Corfield -- (904) 302-SEAN > An Architect's View -- http://corfield.org/ > World Singles, LLC. -- http://worldsingles.com/ > > "Perfection is the enemy of the good." > -- Gustave Flaubert, French realist novelist (1821-1880) > > -- > -- > 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/groups/opt_out. > -- Telegram, Simply Beautiful CMS https://telegr.am Lift, the simply functional web framework http://liftweb.net Follow me: http://twitter.com/dpp Blog: http://goodstuff.im -- -- 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/groups/opt_out.
