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From David Jencks <>
Subject JNDI and proxying
Date Tue, 06 Jul 2010 23:47:59 GMT
I'm running into some problems with the proxies generated by the jndi implementation (ServiceHelper
~line 342).

First of all, people sometimes register services under concrete classes rather than interfaces.
 Filtering these out of the standard java proxy creation will easily reduce the exceptions
from this code:

    for (String interfaceName : interfaces) {
      try {
        Class<?> potentialClass = serviceProviderBundle.loadClass(interfaceName);
//new check that class is actually an interface:
        if (potentialClass.isInterface() && pair.ref.isAssignableTo(owningBundle,
interfaceName)) {
      } catch (ClassNotFoundException e) {

Secondly, I recall rumors that the blueprint implementation can make proxies to classes using
asm or cglib.  Would there be problems using that sort of code here in jndi so classes can
actually be proxied?  Anyone have a pointer to where the blueprint proxy code is?

Thirdly,  there are some really badly designed services (javax.mail.Session) whose implementation
class per spec is final but that need to be in an EE jndi context.   Rather than making these
totally inaccessible through osgi jndi could we simply return the service rather than creating
a proxy?

david jencks

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