RE: [Jython-users] Example of Java class reloading

[Gustav B. <Gus...@eo...>]

Hi! I'm still not getting this to work. Now I get another error-message:

Traceback (innermost last):   File "<console>", line 1, in ?   File =
"v:\eonworx_testbed\gubos\src\python\python-geAamB", line 14, in =
runHello java.lang.IllegalAccessException
 	at java.lang.reflect.Constructor.newInstance(Native Method)
 	at =
org.python.core.PyReflectedConstructor.__call__(PyReflectedConstructor.ja=
va)
 	at org.python.core.PyJavaInstance.__init__(PyJavaInstance.java)
 	at org.python.core.PyJavaClass.__call__(PyJavaClass.java)
 	at org.python.core.PyObject.__call__(PyObject.java)
 	at =
org.python.pycode._pyx2.runHello$2(v:\eonworx_testbed\gubos\src\python\py=
thon-geAamB:14)
 	at =
org.python.pycode._pyx2.call_function(v:\eonworx_testbed\gubos\src\python=
\python-geAamB)
 	at org.python.core.PyTableCode.call(PyTableCode.java)
 	at org.python.core.PyTableCode.call(PyTableCode.java)
 	at org.python.core.PyFunction.__call__(PyFunction.java)
 	at org.python.pycode._pyx3.f$0(<console>:1)
 	at org.python.pycode._pyx3.call_function(<console>)
 	at org.python.core.PyTableCode.call(PyTableCode.java)
 	at org.python.core.PyCode.call(PyCode.java)
 	at org.python.core.Py.runCode(Py.java)
 	at org.python.core.Py.exec(Py.java)
 	at org.python.util.PythonInterpreter.exec(PythonInterpreter.java)
 	at =
org.python.util.InteractiveInterpreter.runcode(InteractiveInterpreter.jav=
a)
 	at =
org.python.util.InteractiveInterpreter.runsource(InteractiveInterpreter.j=
ava)
 	at =
org.python.util.InteractiveInterpreter.runsource(InteractiveInterpreter.j=
ava)
 	at org.python.util.InteractiveConsole.push(InteractiveConsole.java)
 	at =
org.python.util.InteractiveConsole.interact(InteractiveConsole.java)
 	at org.python.util.jython.main(jython.java)
  java.lang.IllegalAccessException: java.lang.IllegalAccessException

What could be causing this?
My classpath does not contain the Hello class (I checked with :
>>> for path in System.getProperty("java.class.path").split(";"):
...	print path)

I've been getting this error when I try to use sys.add_extdir too. I =
never seem to get this dynamic loading of Java-classes to work. I must =
be doing something very wrong.

/Gustav



-----Original Message-----
From: Samuele Pedroni [mailto:pe...@in...]
Sent: Wednesday, February 27, 2002 6:15 PM
To: Gustav Bostrom; Jython (E-mail)
Subject: Re: [Jython-users] Example of Java class reloading


Example of Java class reloadingHi

From: Gustav Bostrom

>Hi!
>I'm struggling to get the Java-class reloading to work.
>I'm not very succesful.
>Does anyone have a good example to share?
>I tried this, but it didn't work:
>import jreload
>classpath=3D["V:\\eonworx\\output\\contrib\\studio\\classes"]
>classesLoadSet=3Djreload.makeLoadSet("classes",classpath)
>print classesLoadSet
>from classes import Hello
>jreload.reload(classesLoadSet)

you don't need this jreload.reload call

>def rl():
>    jreload.reload(classesLoadSet)
>def runHello():
>   Hello().sayHello()
>
> When I run rl() the Hello-class is still not reloaded and runHello() =
still
produces the old result.

Assuming that you have changed the class before calling rl() <wink>, the =
code
seems correct.

The Jython Demo/jreload directory contains the artifacts to run the =
interactive
session example
in Doc/jreload.html documentation.

Up to bugs, the only important thing to remember is that the LoadSet =
path
should
be disjunct from classpath and sys.path otherwise reloading will not =
work
(Java limitation).

regards, Samuele Pedroni.