[Jython-users] Method overriding problem

[Peter B. <bri...@ma...>]

Hi!
I've noticed a problem related to jython classes derived from java
classes. The problem occurs under the following circumstances:

1. A package derives a class A from a java class and overrides a
method M of the java class but calls the original method at some point.
2. The same package derives a class B from class A, overrides the same
method M but calls the corresponding method of A at some point.

Then, when B.M is called, jython seems to go into an infinite loop.
Here's a little program that reproduces the problem:
 
----------------------------------------------------
import java

class spam(java.lang.Object):
    def hashCode(self):
        print 'spam'
        return java.lang.Object.hashCode(self)

class eggs(spam):
    def hashCode(self):
        print 'eggs'
        return spam.hashCode(self)

s=spam()
e=eggs()

print s.hashCode()	# this one works
print e.hashCode()      # here we get stuck
----------------------------------------------------

This shouldn't be happening, right?
Best,
	Peter