I found a workaround... I was able to register the driver using -Djdbc.drivers=com.mysql.jdbc.Driver on the java command line. Looks like loading the class is not enough, adding the above does work:
user=> (enumeration-seq (. java.sql.DriverManager getDrivers)) ([EMAIL PROTECTED] [EMAIL PROTECTED]) The mysql jdbc driver code says that it registers itself (static block) but something is wrong. Eventually I will find why but now I have other pressing needs to full fill than debugging that code. The following fails: user=> (cast java.sql.Driver (clojure.lang.RT/classForName "com.mysql.jdbc.Driver")) java.lang.ClassCastException (NO_SOURCE_FILE:0) The com.mysql.jdbc.Drive does implement the java.sql.Driver interface: user=> (bases (clojure.lang.RT/classForName "com.mysql.jdbc.Driver")) (com.mysql.jdbc.NonRegisteringDriver java.sql.Driver) Is my syntax right ? Does the cast function checks only the class and its ancestors and not interfaces ? Does it require a class object ? I tried this: (cast (clojure.lang.RT/classForName "java.sql.Driver") (. java.sql.DriverManager getDrivers)) java.lang.ClassCastException (NO_SOURCE_FILE:0) I would like to force the registering of the driver myself at startup avoiding the whole issue. Any ideas ? Sorry for what may seem "basic" questions... Thanks Luc On Thu, 2008-10-09 at 13:03 -0400, Stephen C. Gilardi wrote: > > > On Oct 9, 2008, at 12:06 PM, Luc Prefontaine wrote: > > > > > Hi everyone, > > > > I may look stupid but how do you cast Java arguments ? > > > > (java.sql.DriverManager/registerDriver (clojure.lang.RT/classForName > > "com.mysql.jdbc.Driver")) > > java.lang.ClassCastException: java.lang.Class cannot be cast to > > java.sql.Driver (NO_SOURCE_FILE:0) > > > > I fully agree with the error message but how can I change from > > Object to java.sql.Driver ? I tried half a dozen ways and > > searched on the web site but nothing yet. > > > > Hi Luc, > > > I haven't used registerDriver. It looks like it's intended to be > called from within com.mysql.jdbc.Driver to register itself with the > manager. > > > In example code I've seen, a *user* of a jdbc driver (as distinguished > from a driver implementer) only needs to arrange for the class to be > loaded with code like: > > > (clojure/lang.RT/classForName "com.mysql.jdbc.Driver") > > > That has worked for me. You may also find some good info in the source > code for 'clojure.contrib.sql which includes an example that uses > derby. Please see: > > > http://clojure-contrib.svn.sourceforge.net/viewvc/clojure-contrib/trunk/src/clojure/contrib/sql/sql.clj?revision=190&view=markup > > > and > > > http://clojure-contrib.svn.sourceforge.net/viewvc/clojure-contrib/trunk/src/clojure/contrib/sql/test/test.clj?revision=190&view=markup > > > To answer your casting question, Clojure provides some functions along > those lines: > > > (find-doc "[Cc]ast|[Cc]oerce") > > > Will show you some docs for them. > > > --Steve > > > > > > --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
