[Jython-users] Issue with Java RPC-JSON package / TypeError: 'NoneType' object is not callable

[<cl...@br...>]

Dear colleagues, 

Testing a Java RPC-JSON package under Jython 2.7 beta 1. One of the 
classes with an empty argument input list, throws and error: 

   invoker = JsonRpcInvoker()
TypeError: 'NoneType' object is not callable

The Java equivalent is:  JsonRpcInvoker invoker = new JsonRpcInvoker();
The import of the class seems to work OK. 

Code: 
--------
..
sys.path.append(userdir + "/jsonrpc-1.0/jsonrpc-1.0-client.jar")
from org.json.rpc.client import *
..
        url = "http://localhost:8080/jsonrpc" 
        transport = HttpJsonRpcClientTransport(URL(url))
        invoker = JsonRpcInvoker()                # <======= this line is 
causing the error: 
        calc = invoker.get(transport, "calc", Calculator.class)
        result = calc.add(1, 2)
        print "Result = " + str(3) 

Any idea what's wrong with the instantiation of this Java class, or how to 
fix it, or is it related to the dynamic class loader? 

I've also tried with .newInstance() which also throws the same error. 

Regards, 
Claude


Claude Falbriard 
Certified IT Specialist L2 - Middleware
AMS Hortolândia / SP - Brazil
phone:    +55 13 9 9760 0453
cell:         +55 13 9 8117 3316
e-mail:    cl...@br...