[Jython-users] jython's convenience java methods

[marcel l. <m_...@ya...>]

Hi there,
I ran into an issue with Jython's "convenience" java methods. Consider this example:

[mliker@jbox1 ~]$ ./rlwrap jython/jython
Jython 2.2.1 on java1.4.2_08
Type "copyright", "credits" or "license" for more information.

>>> from weblogic.jndi import Environment
>>> server, user, password = 'server', 'user', 'password'
>>> env = Environment(providerUrl = 't3://' + server + ':80', securityPrincipal = user, securityCredentials = password)
>>> env.getInitialContext().lookup("javax.jms.QueueConnectionFactory")
weblogic.jms.client.JMSXAConnectionFactory@1d226a7

however:

[mliker@box1 ~]$ ./rlwrap jython/jython

Jython 2.2.1 on java1.4.2_08

Type "copyright", "credits" or "license" for more information.

>>> from weblogic.jndi import Environment
>>> server, user, password = 'server', 'user', 'password'

>>> env = Environment(providerUrl = 't3://' + server + ':80', securityPrincipal = user, securityCredentials = password)
>>> env.initialContext.lookup("javax.jms.QueueConnectionFactory") 
Traceback (innermost last):
  File "<console>", line 1, in ?
AttributeError: 'NoneType' object has no attribute 'lookup'


while in jython2.2 it works as expected:

[mliker@box1 ~]$ ./rlwrap jython2.2/jython
Jython 2.2 on java1.4.2_08
Type "copyright", "credits" or "license" for more information.

>>> from weblogic.jndi import Environment
>>> server, user, password = 'server', 'user', 'password'


>>> env = Environment(providerUrl = 't3://' + server + ':80', securityPrincipal = user, securityCredentials = password)
>>> env.initialContext.lookup("javax.jms.QueueConnectionFactory")
weblogic.jms.client.JMSXAConnectionFactory@adff2f

Is this a feature or a bug?

If somebody could also shed some light on how does jython provide these "convenience" methods as I have come across instances where not all java methods would have a jython "convenience" method

Marcel




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