Python <-> Java RMI

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  • Birgit Rahm
    #1

    Python <-> Java RMI

    Hello,
    is there a possibility to connect to RMI Middleware from Python or
    alternativ to Java?

    --

    Mit freundlichen Grüßen / best regards
    Birgit Rahm



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    • Alex Martelli
      #2
      Re: Python &lt;-&gt; Java RMI

      Birgit Rahm wrote:
      [color=blue]
      > is there a possibility to connect to RMI Middleware from Python or
      > alternativ to Java?[/color]

      As far as I know, "yes but" only with Jython, not with CPython.


      Alex

        Comment

        • Diez B. Roggisch
          #3
          Re: Python &lt;-&gt; Java RMI

          Hi,
          [color=blue]
          > is there a possibility to connect to RMI Middleware from Python or
          > alternativ to Java?[/color]

          As Alex mentioned, jython works (very well, indeed). However, all
          standarized RPC methods should work. For example SOAP and CORBA (fnorb is
          usable for python, but I didn't check that out for 2 years now).

          AFAIK RMI and CORBA want to converge, so maybe there is a slim chance of RMI
          exposed services beeing callable by CORBA-clients, and thus python. But I
          wouldn't bet on that.

          Diez

            Comment

            • Duncan Grisby
              #4
              Re: Python &lt;-&gt; Java RMI

              In article <bn0at8$rhpra$1 @ID-111250.news.uni-berlin.de>,
              Diez B. Roggisch <nospam-deets@web.de> wrote:
              [color=blue]
              >As Alex mentioned, jython works (very well, indeed). However, all
              >standarized RPC methods should work. For example SOAP and CORBA (fnorb is
              >usable for python, but I didn't check that out for 2 years now).
              >
              >AFAIK RMI and CORBA want to converge, so maybe there is a slim chance of RMI
              >exposed services beeing callable by CORBA-clients, and thus python. But I
              >wouldn't bet on that.[/color]

              CORBA clients can, in theory, connect to RMI servers, but there are
              two problems. First, RMI over IIOP requires CORBA valuetypes, and
              none of the Python CORBA implementations support valuetypes yet. The
              current development version of omniORBpy does support valuetypes, but
              it hasn't been tested with RMI yet.

              The other problem is that the mapping from RMI interfaces to CORBA is
              unpleasant in the extreme, and very difficult to program with.

              By far the best option is to use CORBA directly at the Java level.

              Cheers,

              Duncan.

              --
              -- Duncan Grisby --
              -- duncan@grisby.o rg --
              -- http://www.grisby.org --

                Comment

                • Birgit Rahm
                  #5
                  Re: Python &lt;-&gt; Java RMI

                  > By far the best option is to use CORBA directly at the Java level.

                  Unfortunatly, I have only the RMI Middleware presented by an existing
                  server. I only write on the client program. Most of the classes are written
                  in Python (before I knew, that I have to connect to RMI). So that I had to
                  find now a way to connect.
                  Birgit


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