Re: [Jython-users] implementing an interface (multple inheritance)

[<bc...@wo...>]

On Wed, 25 Apr 2001 20:30:50 +0100, you wrote:

>Eric,
>
>>I would like to integrate some jython into a java source tree.  Some of my
>>python modules will need to import classes defined in this project, and in
>>at least one case, I need to implement a jython class with multiple
>>inheritance from a java class and a java interface.  How must I do this?
>
>Look under 'Interacting with java packages' at:
>http://jython.sourceforge.net/docs/index.html
>
>You cannot directly use multiple inheritance from java classes or
>interfaces. The workaround is to wrap the java things in Jython first:
>
>import pack1 # java packages on the class path when invoking jython.
>import pack2
>
>class wrapintf(pack1.someJavaInterface):
>    pass
>    # I don't know whether you actually have to implement the interface here.
>
>class wrapcls(pack2.someJavaClass):
>    pass
>
>class whatYouAskedFor(wrapcls, wrapintf):
>    pass

You don't have to wrap the java classes/interfaces:

  class whatYouAskedFor(pack2.someJavaClass, pack1.someJavaInterface):
      def interface_method1(self):
         pass
      def interface_method2(self):
         pass

will work as well.

regards,
finn