Re: Passing xml documents between Java and a C library
- From: Kerneels Roos <kerneels@xxxxxxxxx>
- To: programmingblind@xxxxxxxxxxxxx
- Date: Fri, 13 Aug 2010 09:42:15 +0200
It does make sense if the functionality and purpose of the system as a whole
superseeds that of an office suite like Open Office. I was thinking of a
specialised editor inside for Braille inside Open Office for example.
Building on all the APIs already developed for Open Office could probably
speed up things tremendously since there are examples of how to do things
and a lot is done for you already. One can of course always take a look at
the open office code to see how things have been done should you do your own
project completely.
Just for interest sake, was Python and the wx GUI tookit ever a
consideration? What was the reasons why it was not chosen instead of Java,
if I may ask?
On Thu, Aug 12, 2010 at 6:21 PM, John J. Boyer <john.boyer@xxxxxxxxxxxxxxxxx
> wrote:
> OpenOffice is not accesible in Windows. We decided not to tie
> BrailleBlaster to any word processor for a number of reasons. It has its
> own specialized editor for both print and braille.
>
> John
>
> On Thu, Aug 12, 2010 at 02:52:17PM +0200, Kerneels Roos wrote:
> > While on the topic. I'm very excited about the Braille Blaster
> project!
> > But here's a thought. Could it not be integrated with the existing
> Open
> > Office suite? Just imagine in the near future every Open Office
> > installation offering superb Braille functionality. Now that would be
> > total proliferation of access technology! And why stop there, why not
> > start a drive to create a self voicing Open Office via NVDA or Orca? I
> > relish the thought of a day when the concept of a screen reader would
> be
> > a* strangely absurd notion because all applications would emerge out
> from
> > software vendors, speaking and brailling from square one.
> >
> > It is possible and would be order of magnatudes faster and far more
> > accurate than any *after the fact* slapped on attempts as is the
> common
> > norm today. Even if the self voicing requires the presence of a common
> > shared code base that forms part of the OS itself.
> >
> > On Thu, Aug 12, 2010 at 2:33 PM, Kerneels Roos <[1]kerneels@xxxxxxxxx
> >
> > wrote:
> >
> > Shot in the dark here, but since XML has a very low entophy -- a lot
> of
> > redundant data -- would it not make sense to attempt to either avoid
> the
> > direct rendering of the XML on both sides by passing something else
> > between the Java and C++ liblouisutdml library?
> >
> > I would speculate that the parsed XML contained in data structures
> in
> > the Java code and in the C++ code of liblouisutdml is a far more
> > efficient representation of the actual XML. If there could be an XML
> > parser API which the Java code and the liblouisutdml code could
> jointly
> > access the exchange of data would be very fast.
> >
> > What about the option of compressing the XML on both sides before
> > exchanging it? This introduces additional computation time for the
> > compression / decompression for each round trip, but it lowers the
> > lenght of time more memory would be required -- only during the
> > compression / decompression stages, not all the time in the case of
> > passing huge XML blobs.
> >
> > Lastly, is it not possible to call liblouisutdml API calls that
> directly
> > act on the XML from within the Java code instead of passing huge
> chunks
> > from one code base to the other? Haven't had time to check it out,
> but
> > the odt2brl Open Office plugin might very well do something like
> this?
> >
> > Regards
> >
> > On Mon, Aug 9, 2010 at 1:24 PM, Homme, James
> > <[2]james.homme@xxxxxxxxxxxx> wrote:
> >
> > Hi,
> > What would be a good light weight solution for this?
> > Thanks.
> >
> > Jim
> >
> > Jim Homme,
> > Usability Services,
> > Phone: 412-544-1810. Skype: jim.homme
> > Internal recipients, *Read my accessibility blog. Discuss
> > accessibility here. Accessibility Wiki: Breaking news and
> > accessibility advice
> >
> > -----Original Message-----
> > From: [3]programmingblind-bounce@xxxxxxxxxxxxx
> > [mailto:[4]programmingblind-bounce@xxxxxxxxxxxxx] On Behalf Of
> Sina
> > Bahram
> > Sent: Saturday, August 07, 2010 10:25 PM
> > To: [5]programmingblind@xxxxxxxxxxxxx
> > Subject: RE: Passing xml documents between Java and a C library
> >
> > Don't get too carried away with some of these frameworks. JMX and
> the
> > rest might sound like awesome ideas, but heavy weight is not
> > where you necessarily want to be.
> >
> > Just a word of advice from someone who has done both sides of the
> coin
> > on java development.
> >
> > Take care,
> > Sina
> >
> > -----Original Message-----
> > From: [6]programmingblind-bounce@xxxxxxxxxxxxx
> > [mailto:[7]programmingblind-bounce@xxxxxxxxxxxxx] On Behalf Of
> John J.
> > Boyer
> > Sent: Saturday, August 07, 2010 9:26 PM
> > To: [8]programmingblind@xxxxxxxxxxxxx
> > Subject: Re: Passing xml documents between Java and a C library
> >
> > Thanks. This sounds helpful. We are still working out the
> architecture
> > of BrailleBlaster and figuring out what Java libraries or
> > packages we will need. We are definitely using Java 6.
> >
> > John
> >
> > On Sat, Aug 07, 2010 at 07:06:53PM -0500, Jay Macarty wrote:
> > > If you are using java 6 as your platform, there is an XmL
> binding
> > API
> > > called JAX-B which you might find helpful for this. JAX-B allows
> you
> > > to convert a java object into an XML string or to map an XML
> string
> > to
> > > a java object. We use this at work a lot because we are
> receiving
> > text
> > > based messages from queues and the message body is XML.
> > >
> > > In JAX-B you add java annotations to a java bean style data
> object
> > to
> > > tell it what the XML element and/or attribute names should be
> when
> > the
> > > object is converted to XML.
> > >
> > > ----- Original Message -----
> > > From: "John J. Boyer" <[9]john.boyer@xxxxxxxxxxxxxxxxx>
> > > To: <[10]programmingblind@xxxxxxxxxxxxx>
> > > Sent: Saturday, August 07, 2010 6:52 PM
> > > Subject: Passing xml documents between Java and a C library
> > >
> > >
> > > >For the BrailleBlaster project, the editor and user interface
> are
> > > >written in Java. The braille knowledge needed for translating
> annd
> > > >formatting is in the C library liblouisutdml. The two
> communicate
> > by
> > > >method calls and xml documents. We would like to pass the
> > documennts
> > > >back and forth inn a memory buffer, if possible. However, some
> > > >doccuments can be quite large, up to 6 megabytes. After UTDML
> > > >(Unified Tactile Document Markup Language) has been added to
> them
> > > >they can be 20 MB or more. Such large buffers seem impractical,
> so
> > we
> > > >will probably have to pass documents of that size as files.
> > However,
> > > >we would like to be able to pass smaller documents, say up to
> 100k,
> > > >in memory. How can this best be done on the Java end?
> liblouisutdml
> > > >expects xml documents in UTF-8 in an array of 8-bit charactors.
> > > >
> > > >Thanks,
> > > >John
> > > >
> > > >--
> > > >John J. Boyer; President, Chief Software Developer
> Abilitiessoft,
> > > >Inc.
> > > >[11]http://www.abilitiessoft.com
> > > >Madison, Wisconsin USA
> > > >Developing software for people with disabilities
> > > >
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> > --
> > John J. Boyer; President, Chief Software Developer Abilitiessoft,
> Inc.
> > [14]http://www.abilitiessoft.com
> > Madison, Wisconsin USA
> > Developing software for people with disabilities
> >
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> > --
> > Kerneels Roos
> > Cell/SMS: +27 (0)82 309 1998
> > Skype: cornelis.roos
> >
> > The early bird may get the worm, but the second mouse gets the
> cheese!
> >
> > --
> > Kerneels Roos
> > Cell/SMS: +27 (0)82 309 1998
> > Skype: cornelis.roos
> >
> > The early bird may get the worm, but the second mouse gets the cheese!
> >
> > References
> >
> > Visible links
> > 1. mailto:kerneels@xxxxxxxxx
> > 2. mailto:james.homme@xxxxxxxxxxxx
> > 3. mailto:programmingblind-bounce@xxxxxxxxxxxxx
> > 4. mailto:programmingblind-bounce@xxxxxxxxxxxxx
> > 5. mailto:programmingblind@xxxxxxxxxxxxx
> > 6. mailto:programmingblind-bounce@xxxxxxxxxxxxx
> > 7. mailto:programmingblind-bounce@xxxxxxxxxxxxx
> > 8. mailto:programmingblind@xxxxxxxxxxxxx
> > 9. mailto:john.boyer@xxxxxxxxxxxxxxxxx
> > 10. mailto:programmingblind@xxxxxxxxxxxxx
> > 11. http://www.abilitiessoft.com/
> > 12. //www.freelists.org/list/programmingblind
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> > 14. http://www.abilitiessoft.com/
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> --
> John J. Boyer; President, Chief Software Developer
> Abilitiessoft, Inc.
> http://www.abilitiessoft.com
> Madison, Wisconsin USA
> Developing software for people with disabilities
>
> __________
> View the list's information and change your settings at
> //www.freelists.org/list/programmingblind
>
>
--
Kerneels Roos
Cell/SMS: +27 (0)82 309 1998
Skype: cornelis.roos
The early bird may get the worm, but the second mouse gets the cheese!
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