Re: [xmlvm-users] Support for J2ME (MIDP) to IPhone cross compilation, commercial usage, Apple AppStore?

[Gergely K. <ger...@ma...>]

Arno,

thank you for your prompt reply. Yes, we will most likely concentrate on
extending the android2iphone library.

I have to admit, I know less about the Apple AppStore submission process
than I would like. What does "submission for review" mean? Is this some kind
of dry run, where Apple checks if the submitted application complies to the
submission guidelines? Did Xokoban pass? :)

Regarding the commercial license: I just saw it mentioned in one of the
replies on the list, so I thought I would ask if there was already an
established commercial licensing model.
It is my experience that some of my clients are more comfortable spending on
a license so that they have an invoice and a contract filed away. However,
most clients will do OK with an open source licensed component, as long as
they don't have to release their own source.

So just to clarify: If we, as a company receive the "linking exception"
license in exchange for our contribution, are we allowed to develop
commercial applications for our clients, so that our clients would release
these applications to the public (basically "work made for hire")? Also:
would there be some kind of "expiration date" on this linking exception
license, or it would apply to all future revisions of xmlvm?

Now back to the interesting stuff:
One important issue in any embedded development scenario is the on device
debugging. It would be nice to provide a way for Java applications
translated by xmlvm to be debugged on the IPhone.

One solution comes to mind: Create a protocol bridge between the debugging
protocol used by the IPhone (I think they use GDB/MI, but I have to check
further), and Eclipse, which uses the standard Java debugger interface. As
part of the translation process xmlvm could output a mapping file which maps
the source line information in the class files to source line information in
the Objective-C sources.

The big IF in this approach is of course whether an external program outside
of Xcode can access the GDB/MI connection to the IPhone. I have seen some
indication on the net that this can be done.

What do you think?

Best Regards,
Gergely

2009/7/31 Arno Puder <ar...@pu...>

>
> Gergely,
>
> thank you for your interest in XMLVM. The contribution you mentioned is
> surely enough to grant you a linking exception. We focus on Android and
> iPhone, so we would prefer a contribution to the android2iphone part of
> XMLVM. I personally also believe that this is the cleaner approach.
>
> As with any open source project, I don't know who is using XMLVM. I do
> not know of any application using XMLVM that is currently in the
> AppStore. However, I know of several applications that have been
> submitted to the AppStore for review (including our own Xokoban game). I
> will send a short message over this mailing list if I hear of any XMLVM
> success stories.
>
> We currently do not have a commercial license. At this point the XMLVM
> core team only consists of 'geeks'. We are not opposed to offer a
> commercial license. Before we talk about money, we would need to know
> what your expectations are. One thing we can offer in return for a
> commercial license is to prioritize TODOs based on your needs. But
> perhaps you first mention more clearly what your expectations are.
>
> Arno
>
>
> Gergely Kis wrote:
> > Hi,
> >
> > I found your very nice project.
> >
> > We are looking into a solution to port our J2ME / BlackBerry / Android
> > application over to IPhone.
> > For Android we have a thin wrapper to provide the necessary J2ME
> > services. We use the following features:
> > - JSR-135 (Multimedia)
> > - JSR-170 (PIM, Filesystem access)
> > - Generic Connector Framework
> > - RecordStore
> > - Canvas
> >
> > We plan to contribute the missing pieces of these features to the xmlvm
> > project. Does this kind of contribution enough to get a GPL Linking
> > Exception?
> > We have not decided yet whether we will start the J2ME MIDP support
> > "from scratch", or just add the missing pieces to the android2iphone
> > library, and use our Android port as the basis.
> >
> > We would be also interested in the price of the commercial license. Our
> > clients might feel safer to be able to have an actual contract which
> > grants them the right to use the xmlvm runtime libraries.
> >
> > A very important question, before we invest too much energy into this:
> > Are there applications already in the Apple App Store that were ported
> > using xmlvm? Could we get some pointers? Are there any issues that we
> > have to check?
> >
> > Best Regards,
> > Gergely Kis
> > MattaKis Consulting
> >
> >
> > ------------------------------------------------------------------------
> >
> >
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