Re: [Jython-users] CLASSPATH problem

[Kevin M. <kev...@er...>]

Hi again,

I have tried for several hours now to use the extension dirs, but they
don't seem to work. A small example where test2.jar tries to import a
test1.jar class:

test1.py:
---------
class gofaster():
	def __init__(self):
		print "Zoom"
faster()


Compile:
--------
# jythonc -a -p com.ericsson.test1 -j test1.jar test1.py

Test:
-----
# java -cp test1.jar com.ericsson.test1.test1
Zoom



test2.py:
---------
from com.ericsson.test1 import *
test1.main([""])      #              <--- C style???


Compile:
--------
# jythonc -a -p com.ericsson.test2 -j test2.jar test2.py


MyManifest.txt:
--------------
Class-Path: test1.jar


Update Jar file:
----------------
# jar -umf MyManifest test2.jar


Test:
-----
# java -jar test2.jar
Java Traceback:

	at org.python.core.Py.ImportError(Py.java:180)
	at org.python.core.imp.dottedFind(imp.java:414)
	at org.python.core.imp.importName(imp.java:436)
	at org.python.core.imp.importName(imp.java:509)
	at org.python.core.ImportFunction.load(__builtin__.java:967)
	at org.python.core.ImportFunction.__call__(__builtin__.java:961)
	at org.python.core.PyObject.__call__(PyObject.java:250)
	at org.python.core.__builtin__.__import__(__builtin__.java:921)
	at org.python.core.imp.importOne(imp.java:518)
	at com.ericsson.test1.test1$_PyInner.main$1(test1.java:36)
	at com.ericsson.test1.test1$_PyInner.call_function(test1.java:28)
	at org.python.core.PyTableCode.call(PyTableCode.java:155)
	at org.python.core.imp.createFromCode(imp.java:157)
	at org.python.core.Py.runMain(Py.java:798)
	at com.ericsson.test1.test1.main(test1.java:51)
Traceback (innermost last):
  File "/home/qkename/jwork/extdirstest/test1.py", line 0, in main
ImportError: No module named ericsson


Environment:
------------
Everything is done in one directory.
CLASSPATH is not set to anything.
Using Jython 2.0 on java1.3.1 (JIT: null).


Much appreciated,
Kevin.



On Tue, 18 Sep 2001, Samuele Pedroni wrote:

>
> >
> > > That's a java problem/design decision.
> > >
> > > Java -jar ignores the classpath and limits loading
> > > to the jar and the extension dirs.
> > >
> > > http://java.sun.com/j2se/1.3/docs/tooldocs/linux/java.html#options
> >
> > This webpage confirms that I can use '-cp' to set the classpath when
> > running my app.
> You have missed the point. It is not a matter of what the page says
> about -cp but what it says about -jar: (from the vary seem page)
>
>
> -jar
> Execute a program encapsulated in a JAR file. The first argument is the name of a JAR file
> instead of a startup class name. In order for this option to work, the manifest of the JAR file
> must contain a line of the form Main-Class: classname. Here, classname identifies the class
> having the public static void main(String[] args) method that serves as your application's
> starting point. See the Jar tool reference page and the Jar trail of the Java Tutorial for
> information about working with Jar files and Jar-file manifests.
>
> When you use this option, the JAR file is the source of all user classes, and other user class
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> path settings are ignored.
> ^^^^^^^^^^^^^^^^^^^^^^^^^
>
> Now you can reread my previous message.
>
> >
> > This feels like something silly I've missed. Until now I have been trying
> > to avoid having to learn about the Java environment, but there seems to be
> > no helping it.
> >
> Avoiding to learn about the Java env and using jython is a bad
> idea...
>
> regards, Samuele Pedroni.
>

_________________________________________________
Name/Title : Kevin McNamee, Software Consultant
Phone      : +46 13 32 1165