java-player-users Mailing List for Javaclient for Player/Stage (Page 4)

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Re: [Java-player-users] Problems with laserinterface

From: Leo N. <leo...@gm...> - 2009-04-14 08:04:23

If you get a "NullPointerException" you should also know which line it is
thrown from. I guess it's thrown from the "while(lsri.isDataReady());" as
lsri may be null if "robot.requestInterfaceLaser (0,
PlayerConstants.PLAYER_OPEN_MODE);" is unable to locate the laser interface.
Anyway try to get more info on the NullPointerException and post the whole
stacktrace if you need more help.

Bests
Leo


2009/4/10 Skuld <tan...@ho...>

>
> What is your version of JavaClient?
>
> I don't work a lot on JavaClient, but I know that you have to call
> (directly
> or not)
> a function whose name is Read() (PlayerClient in the c++ native library),
> in
> order to retrieve data from
> Player/Stage, to fill up fields of your structure, and then you can reach
> data by
> functions like getRanges().
> So your first call of getRanges, "lsri.getData().getRanges();", can't fill
> these fields. It's useless.
> Maybe you have to call readAll() (of the class PlayerClient in javaClient)
> if you're not in threaded
> mode, or call runThreaded(0,0) if you implemented the Runnable interface.
> Those functions will call
> an equivalent of Read.
> I guess that "isDataReady" doesn't ask a reading from Player/Stage, but
> only check if, in the most recent data retrieved, there is data about
> laser.
> But you
> still have to retrieve it.
>
> If it doesn't work, check your "robot" creation. Maybe it's your
> nullpointer
> error' source.
>
> Do you know the name of the function which cause the error?
>
>
> kevinl wrote:
> >
> > Hi all,
> > I don't know how to use the laserInterface, so I run the following code
> > for a try:
> > lsri = robot.requestInterfaceLaser (0, PlayerConstants.PLAYER_OPEN_MODE);
> > while(lsri.isDataReady());
> >       lnum=lsri.getData().getRanges_count();
> >       lsri.getData().getRanges();
> >       ldata=lsri.getData().getRanges();
> >
> > I get the error of "NullPointerException". Could you advise me on how to
> > use the laserInterface? And I am confused with the method "public void
> > readData(PlayerMsgHdr header)" , how can I get a PlayerMsgHdr variable?
> >
> > Thanks a lot,
> > kevin.
> >
> >
>
> --
> View this message in context:
> http://www.nabble.com/Problems-with-laserinterface-tp22986701p22987951.html
> Sent from the java-player-users mailing list archive at Nabble.com.
>
>
>
> ------------------------------------------------------------------------------
> This SF.net email is sponsored by:
> High Quality Requirements in a Collaborative Environment.
> Download a free trial of Rational Requirements Composer Now!
> http://p.sf.net/sfu/www-ibm-com
> _______________________________________________
> Java-player-users mailing list
> Jav...@li...
> https://lists.sourceforge.net/lists/listinfo/java-player-users
>



-- 
**************************************
Leonardo Nomdedeu Calvente
leo...@gm...

Re: [Java-player-users] Problems with laserinterface

From: Skuld <tan...@ho...> - 2009-04-10 13:25:41

What is your version of JavaClient?

I don't work a lot on JavaClient, but I know that you have to call (directly
or not)
a function whose name is Read() (PlayerClient in the c++ native library), in
order to retrieve data from
Player/Stage, to fill up fields of your structure, and then you can reach
data by
functions like getRanges().
So your first call of getRanges, "lsri.getData().getRanges();", can't fill
these fields. It's useless.
Maybe you have to call readAll() (of the class PlayerClient in javaClient)
if you're not in threaded
mode, or call runThreaded(0,0) if you implemented the Runnable interface.
Those functions will call
an equivalent of Read.
I guess that "isDataReady" doesn't ask a reading from Player/Stage, but
only check if, in the most recent data retrieved, there is data about laser.
But you
still have to retrieve it.

If it doesn't work, check your "robot" creation. Maybe it's your nullpointer
error' source.

Do you know the name of the function which cause the error?

kevinl wrote:
> 
> Hi all,
> I don't know how to use the laserInterface, so I run the following code
> for a try:
> lsri = robot.requestInterfaceLaser (0, PlayerConstants.PLAYER_OPEN_MODE);
> while(lsri.isDataReady());
> 	lnum=lsri.getData().getRanges_count();
> 	lsri.getData().getRanges();
> 	ldata=lsri.getData().getRanges();
> 
> I get the error of "NullPointerException". Could you advise me on how to
> use the laserInterface? And I am confused with the method "public void
> readData(PlayerMsgHdr header)" , how can I get a PlayerMsgHdr variable?
> 
> Thanks a lot,
> kevin.
> 
> 

-- 
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[Java-player-users] Problems with laserinterface

From: kevinl <liu...@gm...> - 2009-04-10 11:40:04

Hi all,
I don't know how to use the laserInterface, so I run the following code for
a try:
lsri = robot.requestInterfaceLaser (0, PlayerConstants.PLAYER_OPEN_MODE);
while(lsri.isDataReady());
	lnum=lsri.getData().getRanges_count();
	lsri.getData().getRanges();
	ldata=lsri.getData().getRanges();

I get the error of "NullPointerException". Could you advise me on how to use
the laserInterface? And I am confused with the method "public void
readData(PlayerMsgHdr header)" , how can I get a PlayerMsgHdr variable?

Thanks a lot,
kevin.

-- 
View this message in context: http://www.nabble.com/Problems-with-laserinterface-tp22986701p22986701.html
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Re: [Java-player-users] Where can I get Player2.0 & Stage2.0?

From: Leo N. <leo...@gm...> - 2009-04-08 08:59:30

You are wellcome ;)

2009/4/8 kevinl <liu...@gm...>

>
> Hi leo,
> Thank you very much!
>
> Yours sincerely,
>  kevin.
>
>
> Leo Nomdedeu wrote:
> >
> > As stated in the readme you should issue a first command:
> >
> > # autoreconf -i
> >
> > That sould make the configure file. The rest of the process is as always.
> >
> > Bests
> > Leo
> >
> > 2009/4/8 kevinl <liu...@gm...>
> >
> >>
> >> Hi Leo,
> >> Thank you very much! I have already download the files. But the
> >> release-2-0-patches does not contain all the files needed to make and
> >> install. There is not the file "congfiure". I am new to linux, could you
> >> advise me on how to install the version 2.0?
> >>
> >> Thanks a lot,
> >> kevin
> >>
> >>
> >> Leo Nomdedeu wrote:
> >> >
> >> > svn co
> >> > http://playerstage.svn.sourceforge.net/svnroot/playerstageplayerstage
> >> > then in the folder player/code/player/branches/release-2-0-patches
> >> >
> >> > I wrote it from memory so take it as an orientation, not as an exact
> >> path.
> >> >
> >> > The svn command can be narrowed to download only the
> >> release-2-0-patches
> >> > but
> >> > I don't remember now ... to early in the morning ;)
> >> >
> >> > Hope it helps.
> >> > Leo
> >> >
> >> >
> >> > 2009/4/8 kevinl <liu...@gm...>
> >> >
> >> >>
> >> >> Hi all,
> >> >>
> >> >> I'm currently working on the plateform Player/Stage and I need to use
> >> >> Javaclient with Player. But the Javaclient 2.0 seems to be unable to
> >> work
> >> >> with the player 2.1. So I want to try the player 2.0. Could you
> advise
> >> me
> >> >> on
> >> >> where can I get Player2.0 & Stage2.0?
> >> >>
> >> >> Thanks a lot,
> >> >> kevin
> >> >> --
> >> >> View this message in context:
> >> >>
> >>
> http://www.nabble.com/Where-can-I-get-Player2.0---Stage2.0--tp22944353p22944353.html
> >> >> Sent from the java-player-users mailing list archive at Nabble.com.
> >> >>
> >> >>
> >> >>
> >> >>
> >>
> ------------------------------------------------------------------------------
> >> >> This SF.net email is sponsored by:
> >> >> High Quality Requirements in a Collaborative Environment.
> >> >> Download a free trial of Rational Requirements Composer Now!
> >> >> http://p.sf.net/sfu/www-ibm-com
> >> >> _______________________________________________
> >> >> Java-player-users mailing list
> >> >> Jav...@li...
> >> >> https://lists.sourceforge.net/lists/listinfo/java-player-users
> >> >>
> >> >
> >> >
> >> >
> >> > --
> >> > **************************************
> >> > Leonardo Nomdedeu Calvente
> >> > leo...@gm...
> >> >
> >> >
> >>
> ------------------------------------------------------------------------------
> >> > This SF.net email is sponsored by:
> >> > High Quality Requirements in a Collaborative Environment.
> >> > Download a free trial of Rational Requirements Composer Now!
> >> > http://p.sf.net/sfu/www-ibm-com
> >> > _______________________________________________
> >> > Java-player-users mailing list
> >> > Jav...@li...
> >> > https://lists.sourceforge.net/lists/listinfo/java-player-users
> >> >
> >> >
> >>
> >> --
> >> View this message in context:
> >>
> http://www.nabble.com/Where-can-I-get-Player2.0---Stage2.0--tp22944353p22945501.html
> >> Sent from the java-player-users mailing list archive at Nabble.com.
> >>
> >>
> >>
> >>
> ------------------------------------------------------------------------------
> >> This SF.net email is sponsored by:
> >> High Quality Requirements in a Collaborative Environment.
> >> Download a free trial of Rational Requirements Composer Now!
> >> http://p.sf.net/sfu/www-ibm-com
> >> _______________________________________________
> >> Java-player-users mailing list
> >> Jav...@li...
> >> https://lists.sourceforge.net/lists/listinfo/java-player-users
> >>
> >
> >
> >
> > --
> > **************************************
> > Leonardo Nomdedeu Calvente
> > leo...@gm...
> >
> >
> ------------------------------------------------------------------------------
> > This SF.net email is sponsored by:
> > High Quality Requirements in a Collaborative Environment.
> > Download a free trial of Rational Requirements Composer Now!
> > http://p.sf.net/sfu/www-ibm-com
> > _______________________________________________
> > Java-player-users mailing list
> > Jav...@li...
> > https://lists.sourceforge.net/lists/listinfo/java-player-users
> >
> >
>
> --
> View this message in context:
> http://www.nabble.com/Where-can-I-get-Player2.0---Stage2.0--tp22944353p22946165.html
> Sent from the java-player-users mailing list archive at Nabble.com.
>
>
>
> ------------------------------------------------------------------------------
> This SF.net email is sponsored by:
> High Quality Requirements in a Collaborative Environment.
> Download a free trial of Rational Requirements Composer Now!
> http://p.sf.net/sfu/www-ibm-com
> _______________________________________________
> Java-player-users mailing list
> Jav...@li...
> https://lists.sourceforge.net/lists/listinfo/java-player-users
>



-- 
**************************************
Leonardo Nomdedeu Calvente
leo...@gm...

Re: [Java-player-users] Where can I get Player2.0 & Stage2.0?

From: kevinl <liu...@gm...> - 2009-04-08 08:57:14

Hi leo,
Thank you very much! 

Yours sincerely,
 kevin.


Leo Nomdedeu wrote:
> 
> As stated in the readme you should issue a first command:
> 
> # autoreconf -i
> 
> That sould make the configure file. The rest of the process is as always.
> 
> Bests
> Leo
> 
> 2009/4/8 kevinl <liu...@gm...>
> 
>>
>> Hi Leo,
>> Thank you very much! I have already download the files. But the
>> release-2-0-patches does not contain all the files needed to make and
>> install. There is not the file "congfiure". I am new to linux, could you
>> advise me on how to install the version 2.0?
>>
>> Thanks a lot,
>> kevin
>>
>>
>> Leo Nomdedeu wrote:
>> >
>> > svn co
>> > http://playerstage.svn.sourceforge.net/svnroot/playerstageplayerstage
>> > then in the folder player/code/player/branches/release-2-0-patches
>> >
>> > I wrote it from memory so take it as an orientation, not as an exact
>> path.
>> >
>> > The svn command can be narrowed to download only the
>> release-2-0-patches
>> > but
>> > I don't remember now ... to early in the morning ;)
>> >
>> > Hope it helps.
>> > Leo
>> >
>> >
>> > 2009/4/8 kevinl <liu...@gm...>
>> >
>> >>
>> >> Hi all,
>> >>
>> >> I'm currently working on the plateform Player/Stage and I need to use
>> >> Javaclient with Player. But the Javaclient 2.0 seems to be unable to
>> work
>> >> with the player 2.1. So I want to try the player 2.0. Could you advise
>> me
>> >> on
>> >> where can I get Player2.0 & Stage2.0?
>> >>
>> >> Thanks a lot,
>> >> kevin
>> >> --
>> >> View this message in context:
>> >>
>> http://www.nabble.com/Where-can-I-get-Player2.0---Stage2.0--tp22944353p22944353.html
>> >> Sent from the java-player-users mailing list archive at Nabble.com.
>> >>
>> >>
>> >>
>> >>
>> ------------------------------------------------------------------------------
>> >> This SF.net email is sponsored by:
>> >> High Quality Requirements in a Collaborative Environment.
>> >> Download a free trial of Rational Requirements Composer Now!
>> >> http://p.sf.net/sfu/www-ibm-com
>> >> _______________________________________________
>> >> Java-player-users mailing list
>> >> Jav...@li...
>> >> https://lists.sourceforge.net/lists/listinfo/java-player-users
>> >>
>> >
>> >
>> >
>> > --
>> > **************************************
>> > Leonardo Nomdedeu Calvente
>> > leo...@gm...
>> >
>> >
>> ------------------------------------------------------------------------------
>> > This SF.net email is sponsored by:
>> > High Quality Requirements in a Collaborative Environment.
>> > Download a free trial of Rational Requirements Composer Now!
>> > http://p.sf.net/sfu/www-ibm-com
>> > _______________________________________________
>> > Java-player-users mailing list
>> > Jav...@li...
>> > https://lists.sourceforge.net/lists/listinfo/java-player-users
>> >
>> >
>>
>> --
>> View this message in context:
>> http://www.nabble.com/Where-can-I-get-Player2.0---Stage2.0--tp22944353p22945501.html
>> Sent from the java-player-users mailing list archive at Nabble.com.
>>
>>
>>
>> ------------------------------------------------------------------------------
>> This SF.net email is sponsored by:
>> High Quality Requirements in a Collaborative Environment.
>> Download a free trial of Rational Requirements Composer Now!
>> http://p.sf.net/sfu/www-ibm-com
>> _______________________________________________
>> Java-player-users mailing list
>> Jav...@li...
>> https://lists.sourceforge.net/lists/listinfo/java-player-users
>>
> 
> 
> 
> -- 
> **************************************
> Leonardo Nomdedeu Calvente
> leo...@gm...
> 
> ------------------------------------------------------------------------------
> This SF.net email is sponsored by:
> High Quality Requirements in a Collaborative Environment.
> Download a free trial of Rational Requirements Composer Now!
> http://p.sf.net/sfu/www-ibm-com
> _______________________________________________
> Java-player-users mailing list
> Jav...@li...
> https://lists.sourceforge.net/lists/listinfo/java-player-users
> 
> 

-- 
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Re: [Java-player-users] Where can I get Player2.0 & Stage2.0?

From: Leo N. <leo...@gm...> - 2009-04-08 08:43:49

As stated in the readme you should issue a first command:

# autoreconf -i

That sould make the configure file. The rest of the process is as always.

Bests
Leo

2009/4/8 kevinl <liu...@gm...>

>
> Hi Leo,
> Thank you very much! I have already download the files. But the
> release-2-0-patches does not contain all the files needed to make and
> install. There is not the file "congfiure". I am new to linux, could you
> advise me on how to install the version 2.0?
>
> Thanks a lot,
> kevin
>
>
> Leo Nomdedeu wrote:
> >
> > svn co
> > http://playerstage.svn.sourceforge.net/svnroot/playerstageplayerstage
> > then in the folder player/code/player/branches/release-2-0-patches
> >
> > I wrote it from memory so take it as an orientation, not as an exact
> path.
> >
> > The svn command can be narrowed to download only the release-2-0-patches
> > but
> > I don't remember now ... to early in the morning ;)
> >
> > Hope it helps.
> > Leo
> >
> >
> > 2009/4/8 kevinl <liu...@gm...>
> >
> >>
> >> Hi all,
> >>
> >> I'm currently working on the plateform Player/Stage and I need to use
> >> Javaclient with Player. But the Javaclient 2.0 seems to be unable to
> work
> >> with the player 2.1. So I want to try the player 2.0. Could you advise
> me
> >> on
> >> where can I get Player2.0 & Stage2.0?
> >>
> >> Thanks a lot,
> >> kevin
> >> --
> >> View this message in context:
> >>
> http://www.nabble.com/Where-can-I-get-Player2.0---Stage2.0--tp22944353p22944353.html
> >> Sent from the java-player-users mailing list archive at Nabble.com.
> >>
> >>
> >>
> >>
> ------------------------------------------------------------------------------
> >> This SF.net email is sponsored by:
> >> High Quality Requirements in a Collaborative Environment.
> >> Download a free trial of Rational Requirements Composer Now!
> >> http://p.sf.net/sfu/www-ibm-com
> >> _______________________________________________
> >> Java-player-users mailing list
> >> Jav...@li...
> >> https://lists.sourceforge.net/lists/listinfo/java-player-users
> >>
> >
> >
> >
> > --
> > **************************************
> > Leonardo Nomdedeu Calvente
> > leo...@gm...
> >
> >
> ------------------------------------------------------------------------------
> > This SF.net email is sponsored by:
> > High Quality Requirements in a Collaborative Environment.
> > Download a free trial of Rational Requirements Composer Now!
> > http://p.sf.net/sfu/www-ibm-com
> > _______________________________________________
> > Java-player-users mailing list
> > Jav...@li...
> > https://lists.sourceforge.net/lists/listinfo/java-player-users
> >
> >
>
> --
> View this message in context:
> http://www.nabble.com/Where-can-I-get-Player2.0---Stage2.0--tp22944353p22945501.html
> Sent from the java-player-users mailing list archive at Nabble.com.
>
>
>
> ------------------------------------------------------------------------------
> This SF.net email is sponsored by:
> High Quality Requirements in a Collaborative Environment.
> Download a free trial of Rational Requirements Composer Now!
> http://p.sf.net/sfu/www-ibm-com
> _______________________________________________
> Java-player-users mailing list
> Jav...@li...
> https://lists.sourceforge.net/lists/listinfo/java-player-users
>



-- 
**************************************
Leonardo Nomdedeu Calvente
leo...@gm...

Re: [Java-player-users] Where can I get Player2.0 & Stage2.0?

From: kevinl <liu...@gm...> - 2009-04-08 08:32:21

Hi Leo,
Thank you very much! I have already download the files. But the
release-2-0-patches does not contain all the files needed to make and
install. There is not the file "congfiure". I am new to linux, could you
advise me on how to install the version 2.0?

Thanks a lot,
kevin 


Leo Nomdedeu wrote:
> 
> svn co
> http://playerstage.svn.sourceforge.net/svnroot/playerstageplayerstage
> then in the folder player/code/player/branches/release-2-0-patches
> 
> I wrote it from memory so take it as an orientation, not as an exact path.
> 
> The svn command can be narrowed to download only the release-2-0-patches
> but
> I don't remember now ... to early in the morning ;)
> 
> Hope it helps.
> Leo
> 
> 
> 2009/4/8 kevinl <liu...@gm...>
> 
>>
>> Hi all,
>>
>> I'm currently working on the plateform Player/Stage and I need to use
>> Javaclient with Player. But the Javaclient 2.0 seems to be unable to work
>> with the player 2.1. So I want to try the player 2.0. Could you advise me
>> on
>> where can I get Player2.0 & Stage2.0?
>>
>> Thanks a lot,
>> kevin
>> --
>> View this message in context:
>> http://www.nabble.com/Where-can-I-get-Player2.0---Stage2.0--tp22944353p22944353.html
>> Sent from the java-player-users mailing list archive at Nabble.com.
>>
>>
>>
>> ------------------------------------------------------------------------------
>> This SF.net email is sponsored by:
>> High Quality Requirements in a Collaborative Environment.
>> Download a free trial of Rational Requirements Composer Now!
>> http://p.sf.net/sfu/www-ibm-com
>> _______________________________________________
>> Java-player-users mailing list
>> Jav...@li...
>> https://lists.sourceforge.net/lists/listinfo/java-player-users
>>
> 
> 
> 
> -- 
> **************************************
> Leonardo Nomdedeu Calvente
> leo...@gm...
> 
> ------------------------------------------------------------------------------
> This SF.net email is sponsored by:
> High Quality Requirements in a Collaborative Environment.
> Download a free trial of Rational Requirements Composer Now!
> http://p.sf.net/sfu/www-ibm-com
> _______________________________________________
> Java-player-users mailing list
> Jav...@li...
> https://lists.sourceforge.net/lists/listinfo/java-player-users
> 
> 

-- 
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Re: [Java-player-users] Where can I get Player2.0 & Stage2.0?

From: Leo N. <leo...@gm...> - 2009-04-08 06:59:39

svn co http://playerstage.svn.sourceforge.net/svnroot/playerstageplayerstage
then in the folder player/code/player/branches/release-2-0-patches

I wrote it from memory so take it as an orientation, not as an exact path.

The svn command can be narrowed to download only the release-2-0-patches but
I don't remember now ... to early in the morning ;)

Hope it helps.
Leo


2009/4/8 kevinl <liu...@gm...>

>
> Hi all,
>
> I'm currently working on the plateform Player/Stage and I need to use
> Javaclient with Player. But the Javaclient 2.0 seems to be unable to work
> with the player 2.1. So I want to try the player 2.0. Could you advise me
> on
> where can I get Player2.0 & Stage2.0?
>
> Thanks a lot,
> kevin
> --
> View this message in context:
> http://www.nabble.com/Where-can-I-get-Player2.0---Stage2.0--tp22944353p22944353.html
> Sent from the java-player-users mailing list archive at Nabble.com.
>
>
>
> ------------------------------------------------------------------------------
> This SF.net email is sponsored by:
> High Quality Requirements in a Collaborative Environment.
> Download a free trial of Rational Requirements Composer Now!
> http://p.sf.net/sfu/www-ibm-com
> _______________________________________________
> Java-player-users mailing list
> Jav...@li...
> https://lists.sourceforge.net/lists/listinfo/java-player-users
>



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[Java-player-users] Where can I get Player2.0 & Stage2.0?

From: kevinl <liu...@gm...> - 2009-04-08 06:54:43

Hi all,

I'm currently working on the plateform Player/Stage and I need to use
Javaclient with Player. But the Javaclient 2.0 seems to be unable to work
with the player 2.1. So I want to try the player 2.0. Could you advise me on 
where can I get Player2.0 & Stage2.0?

Thanks a lot, 
kevin
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Re: [Java-player-users] Questions about where to start upgrading JavaClient

From: Leo N. <leo...@gm...> - 2009-03-02 11:46:12

I'm glad you got it working.

It's a long time I have not used smalltalk, but it seams you keep it alive
;)

Bests!
Leo

2009/3/2 Serge Stinckwich <ser...@do...>

>
>
>
> Leo Nomdedeu wrote:
> >
> > I have never found any documentation regarding the communication. Indeed,
> > the xdr library is build "on the fly" depending on the contents of the
> > "playercore/player.h" header by a Python process
> > "playerxdr/playerxdrgen.py".
> > The reason I have not released any patched version of the JavaClient is
> > that
> > a patch will only work for a few time, as P/S developers do not consider
> > changes in this communication a problem, what unfortunately is a big
> issue
> > for those trying to interface Player from other languages. What we are
> > developing now is a process similar to this playerxdrgen to create the
> > xdr-based communications on java on-the-fly.
> >
> >
>
> Thank you for this information Leo ! I found now some problems with my
> client and it works much better ;-) I could rotate my robot, use a sonar
> without glitch. If you are interested, my work is here :
> http://www.squeaksource.com/WifiBot.html
>
> --
> Serge Stinckwich
> UMI UMMISCO 209 (IRD/UPMC), Hanoi, Vietnam
> Smalltalkers do: [:it | All with: Class, (And love: it)]
> http://doesnotunderstand.org/
> --
> View this message in context:
> http://www.nabble.com/Questions-about-where-to-start-upgrading-JavaClient-tp20997349p22285003.html
> Sent from the java-player-users mailing list archive at Nabble.com.
>
>
>
> ------------------------------------------------------------------------------
> Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco,
> CA
> -OSBC tackles the biggest issue in open source: Open Sourcing the
> Enterprise
> -Strategies to boost innovation and cut costs with open source
> participation
> -Receive a $600 discount off the registration fee with the source code:
> SFAD
> http://p.sf.net/sfu/XcvMzF8H
> _______________________________________________
> Java-player-users mailing list
> Jav...@li...
> https://lists.sourceforge.net/lists/listinfo/java-player-users
>



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Re: [Java-player-users] Questions about where to start upgrading JavaClient

From: Serge S. <ser...@do...> - 2009-03-02 10:15:49



Leo Nomdedeu wrote:
> 
> I have never found any documentation regarding the communication. Indeed,
> the xdr library is build "on the fly" depending on the contents of the
> "playercore/player.h" header by a Python process
> "playerxdr/playerxdrgen.py".
> The reason I have not released any patched version of the JavaClient is
> that
> a patch will only work for a few time, as P/S developers do not consider
> changes in this communication a problem, what unfortunately is a big issue
> for those trying to interface Player from other languages. What we are
> developing now is a process similar to this playerxdrgen to create the
> xdr-based communications on java on-the-fly.
> 
> 

Thank you for this information Leo ! I found now some problems with my
client and it works much better ;-) I could rotate my robot, use a sonar
without glitch. If you are interested, my work is here : 
http://www.squeaksource.com/WifiBot.html

-- 
Serge Stinckwich
UMI UMMISCO 209 (IRD/UPMC), Hanoi, Vietnam
Smalltalkers do: [:it | All with: Class, (And love: it)]
http://doesnotunderstand.org/
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Re: [Java-player-users] Questions about where to start upgrading JavaClient

From: Leo N. <leo...@gm...> - 2009-03-02 07:53:13

I have never found any documentation regarding the communication. Indeed,
the xdr library is build "on the fly" depending on the contents of the
"playercore/player.h" header by a Python process
"playerxdr/playerxdrgen.py".
The reason I have not released any patched version of the JavaClient is that
a patch will only work for a few time, as P/S developers do not consider
changes in this communication a problem, what unfortunately is a big issue
for those trying to interface Player from other languages. What we are
developing now is a process similar to this playerxdrgen to create the
xdr-based communications on java on-the-fly.

Hope this helps
Bests
Leo

2009/3/2 Serge Stinckwich <ser...@do...>

>
> Hi,
>
> i'm currently working on a Player/Stage client written in Smalltalk for my
> own research needs and i must say that the java client helps me a lot to
> understand how the player/stage protocol works ;-)
> I'm trying to make a client that works with Player 2.1: i can connect to a
> player server, create a position2d or Sonar interfaces, but i have some
> problems like failed decoding from the server side. I guess i would have
> the
> same problem with the Java client.
> I'm looking for some documentation about the Player protocol apart from the
> C code ;-)
> Maybe we could collaborate all together by documenting the protocol for all
> the P/S clients ?
>
> Thank you.
>
>
>
> Leo Nomdedeu wrote:
> >
> > Hi Giri
> >
> > If you want to fix JavaClient you have to first digg into p/s to know
> wich
> > are the XDR elements sent for each of the commands of each of the
> > interfaces
> > you need. Then go back to the JavaClient sourcecode and fix each of the
> > communications (usually inside the proxies themselves) to send and
> receive
> > these elements properly.
> >
> > Hope this helps
> > Bests
> > Leo
> >
> > 2009/2/17 Giri_Nathan <Gir...@md...>
> >
> >>
> >> Hi Leo,
> >> I would like to use a java client for player 2.1 In an earlier posting,
> >> you
> >> mentioned that someone might be starting that work. I was wondering if
> >> there
> >> is something available?
> >>
> >> I read the java client code and it is not very difficult to understand.
> I
> >> guess the new student is planning to write some auto-generator to create
> >> the
> >> necessary java de(marshalling) classes.
> >>
> >> Is it possible to modify java client 2.0 to make it work with player
> 2.1.
> >> I
> >> am thinking it might be possible to just modify the java code for
> >> interfaces
> >> I need so that I can quickly have a working java client. Please let me
> >> know
> >> if there is something wrong with that approach. What is causing the
> >> incompatibillity?
> >> I would like to get the position2d to work first. Please give me some
> >> tips
> >> as to which parts of the java client needs to be modified to make this
> >> work.
> >>
> >> thanks
> >> Giri
> >> --
> >> View this message in context:
> >>
> http://www.nabble.com/Questions-about-where-to-start-upgrading-JavaClient-tp20997349p22047966.html
> >> Sent from the java-player-users mailing list archive at Nabble.com.
> >>
> >>
> >>
> >>
> ------------------------------------------------------------------------------
> >> Open Source Business Conference (OSBC), March 24-25, 2009, San
> Francisco,
> >> CA
> >> -OSBC tackles the biggest issue in open source: Open Sourcing the
> >> Enterprise
> >> -Strategies to boost innovation and cut costs with open source
> >> participation
> >> -Receive a $600 discount off the registration fee with the source code:
> >> SFAD
> >> http://p.sf.net/sfu/XcvMzF8H
> >> _______________________________________________
> >> Java-player-users mailing list
> >> Jav...@li...
> >> https://lists.sourceforge.net/lists/listinfo/java-player-users
> >>
> >
> >
> >
> > --
> > **************************************
> > Leonardo Nomdedeu Calvente
> > leo...@gm...
> >
> >
> ------------------------------------------------------------------------------
> > Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco,
> > CA
> > -OSBC tackles the biggest issue in open source: Open Sourcing the
> > Enterprise
> > -Strategies to boost innovation and cut costs with open source
> > participation
> > -Receive a $600 discount off the registration fee with the source code:
> > SFAD
> > http://p.sf.net/sfu/XcvMzF8H
> > _______________________________________________
> > Java-player-users mailing list
> > Jav...@li...
> > https://lists.sourceforge.net/lists/listinfo/java-player-users
> >
> >
>
> --
> View this message in context:
> http://www.nabble.com/Questions-about-where-to-start-upgrading-JavaClient-tp20997349p22283116.html
> Sent from the java-player-users mailing list archive at Nabble.com.
>
>
>
> ------------------------------------------------------------------------------
> Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco,
> CA
> -OSBC tackles the biggest issue in open source: Open Sourcing the
> Enterprise
> -Strategies to boost innovation and cut costs with open source
> participation
> -Receive a $600 discount off the registration fee with the source code:
> SFAD
> http://p.sf.net/sfu/XcvMzF8H
> _______________________________________________
> Java-player-users mailing list
> Jav...@li...
> https://lists.sourceforge.net/lists/listinfo/java-player-users
>



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leo...@gm...

Re: [Java-player-users] Questions about where to start upgrading JavaClient

From: Serge S. <ser...@do...> - 2009-03-02 07:06:27

Hi,

i'm currently working on a Player/Stage client written in Smalltalk for my
own research needs and i must say that the java client helps me a lot to
understand how the player/stage protocol works ;-)
I'm trying to make a client that works with Player 2.1: i can connect to a
player server, create a position2d or Sonar interfaces, but i have some
problems like failed decoding from the server side. I guess i would have the
same problem with the Java client.
I'm looking for some documentation about the Player protocol apart from the
C code ;-)
Maybe we could collaborate all together by documenting the protocol for all
the P/S clients ?

Thank you.



Leo Nomdedeu wrote:
> 
> Hi Giri
> 
> If you want to fix JavaClient you have to first digg into p/s to know wich
> are the XDR elements sent for each of the commands of each of the
> interfaces
> you need. Then go back to the JavaClient sourcecode and fix each of the
> communications (usually inside the proxies themselves) to send and receive
> these elements properly.
> 
> Hope this helps
> Bests
> Leo
> 
> 2009/2/17 Giri_Nathan <Gir...@md...>
> 
>>
>> Hi Leo,
>> I would like to use a java client for player 2.1 In an earlier posting,
>> you
>> mentioned that someone might be starting that work. I was wondering if
>> there
>> is something available?
>>
>> I read the java client code and it is not very difficult to understand. I
>> guess the new student is planning to write some auto-generator to create
>> the
>> necessary java de(marshalling) classes.
>>
>> Is it possible to modify java client 2.0 to make it work with player 2.1.
>> I
>> am thinking it might be possible to just modify the java code for
>> interfaces
>> I need so that I can quickly have a working java client. Please let me
>> know
>> if there is something wrong with that approach. What is causing the
>> incompatibillity?
>> I would like to get the position2d to work first. Please give me some
>> tips
>> as to which parts of the java client needs to be modified to make this
>> work.
>>
>> thanks
>> Giri
>> --
>> View this message in context:
>> http://www.nabble.com/Questions-about-where-to-start-upgrading-JavaClient-tp20997349p22047966.html
>> Sent from the java-player-users mailing list archive at Nabble.com.
>>
>>
>>
>> ------------------------------------------------------------------------------
>> Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco,
>> CA
>> -OSBC tackles the biggest issue in open source: Open Sourcing the
>> Enterprise
>> -Strategies to boost innovation and cut costs with open source
>> participation
>> -Receive a $600 discount off the registration fee with the source code:
>> SFAD
>> http://p.sf.net/sfu/XcvMzF8H
>> _______________________________________________
>> Java-player-users mailing list
>> Jav...@li...
>> https://lists.sourceforge.net/lists/listinfo/java-player-users
>>
> 
> 
> 
> -- 
> **************************************
> Leonardo Nomdedeu Calvente
> leo...@gm...
> 
> ------------------------------------------------------------------------------
> Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco,
> CA
> -OSBC tackles the biggest issue in open source: Open Sourcing the
> Enterprise
> -Strategies to boost innovation and cut costs with open source
> participation
> -Receive a $600 discount off the registration fee with the source code:
> SFAD
> http://p.sf.net/sfu/XcvMzF8H
> _______________________________________________
> Java-player-users mailing list
> Jav...@li...
> https://lists.sourceforge.net/lists/listinfo/java-player-users
> 
> 

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Re: [Java-player-users] Questions about where to start upgrading JavaClient

From: Leo N. <leo...@gm...> - 2009-02-17 07:32:10

Hi Giri

If you want to fix JavaClient you have to first digg into p/s to know wich
are the XDR elements sent for each of the commands of each of the interfaces
you need. Then go back to the JavaClient sourcecode and fix each of the
communications (usually inside the proxies themselves) to send and receive
these elements properly.

Hope this helps
Bests
Leo

2009/2/17 Giri_Nathan <Gir...@md...>

>
> Hi Leo,
> I would like to use a java client for player 2.1 In an earlier posting, you
> mentioned that someone might be starting that work. I was wondering if
> there
> is something available?
>
> I read the java client code and it is not very difficult to understand. I
> guess the new student is planning to write some auto-generator to create
> the
> necessary java de(marshalling) classes.
>
> Is it possible to modify java client 2.0 to make it work with player 2.1. I
> am thinking it might be possible to just modify the java code for
> interfaces
> I need so that I can quickly have a working java client. Please let me know
> if there is something wrong with that approach. What is causing the
> incompatibillity?
> I would like to get the position2d to work first. Please give me some tips
> as to which parts of the java client needs to be modified to make this
> work.
>
> thanks
> Giri
> --
> View this message in context:
> http://www.nabble.com/Questions-about-where-to-start-upgrading-JavaClient-tp20997349p22047966.html
> Sent from the java-player-users mailing list archive at Nabble.com.
>
>
>
> ------------------------------------------------------------------------------
> Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco,
> CA
> -OSBC tackles the biggest issue in open source: Open Sourcing the
> Enterprise
> -Strategies to boost innovation and cut costs with open source
> participation
> -Receive a $600 discount off the registration fee with the source code:
> SFAD
> http://p.sf.net/sfu/XcvMzF8H
> _______________________________________________
> Java-player-users mailing list
> Jav...@li...
> https://lists.sourceforge.net/lists/listinfo/java-player-users
>



-- 
**************************************
Leonardo Nomdedeu Calvente
leo...@gm...

Re: [Java-player-users] Questions about where to start upgrading JavaClient

From: Giri_Nathan <Gir...@md...> - 2009-02-16 23:18:00

Hi Leo,
I would like to use a java client for player 2.1 In an earlier posting, you
mentioned that someone might be starting that work. I was wondering if there
is something available?

I read the java client code and it is not very difficult to understand. I
guess the new student is planning to write some auto-generator to create the
necessary java de(marshalling) classes. 

Is it possible to modify java client 2.0 to make it work with player 2.1. I
am thinking it might be possible to just modify the java code for interfaces
I need so that I can quickly have a working java client. Please let me know
if there is something wrong with that approach. What is causing the
incompatibillity? 
I would like to get the position2d to work first. Please give me some tips
as to which parts of the java client needs to be modified to make this work.

thanks
Giri
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[Java-player-users] Stage freeze : too many java thread? too fast?

From: Skuld <tan...@ho...> - 2009-02-12 16:46:19

There, I got a problem of freezing of Stage while executing my java program,
which uses javaclient 2.0. I use Player 204, Stage 203
(Don't have choices, I need 2.0.x versions to be compatibles with javaclient
2.0).

My java program is a multiple thread of agent to interact with simulated
robots in stage,
in order to test special behaviour effects on the resolution of a problem.
So each agent
retrieve info from the laser, compute it and tell the robot where it has to
go (one agent=one thread,
with a call to runThreaded of playerclient into his own life cycle). Here,
I'm using
16 agents linked with 16 robots in stage, and they're supposed to move
forward,
avoiding obstacles. Simple.

But it freezes Stage at different moments, depending on values of the
variables : 
interval_sim 100  
interval_real 150 
gui_interval 10
, and of fate (with same values of variables, execution freezes at different
times ; about 10 to 30 seconds).

I tried to slow the execution of my loop (with a thread.sleep) but it isn't
working well. I tried managing variables but it's not working either.

Is anyone have an idea?
Skuld

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Re: [Java-player-users] Javaclient compatibilities on position

From: Skuld <tan...@ho...> - 2009-02-09 14:46:44

Plop!
I up, because I need help ^^

Now I'm working with Player 2.0.4 and Stage 2.0.3 (seems to be ok, but I'm
not sure) and I have doubt about
Javaclient version. In the 2.0 version, I can't manage to use correctly
setPosition, Player tells me this:
warning : decoding failed on message to 4:0 with type 2
(but it's an important part of my work, so if it's possible, please tell me
! and tell me how.)
Is it a bug with this function/ability, in version 2.0?

So I'm trying the 1.6.5 version but it looks entirely different, and I'm not
sure it will work fine with my
Player/stage. Could you inform me ?

Thanks for your attention,
Skuld

Skuld wrote:
> 
> Hi ^^
> 
> I'm currently working on the plateform Player/Stage for a team of AI
> researchers on Toulouse,
> so I need to use Javaclient with Player. But I've seen (and experiment)
> that my version of Player : 2.1.2
> and my version of Javaclient: 2.0 aren't compatible.
> So, I have to fix it to continue my work of programming, 
> but I would want to know :
> -will it a new version of Javaclient be released soon? Will it be
> compatible with Player 2.1 series?
> and
> -if not, could you advise me on what versions are compatible ? And where
> can I download them?
> (and I need to interface Player with Stage 3.0.1; is it ok?)
> 
> Thanks for your time, and thanks for developing this librairies on java ^^ 
> Skuld
> 

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[Java-player-users] Information query

From: Skuld <tan...@ho...> - 2009-02-04 09:36:31

Hi ^^

I'm currently working on the plateform Player/Stage for a team of AI
researchers on Toulouse,
so I need to use Javaclient with Player. But I've seen (and experiment) that
my version of Player : 2.1.2
and my version of Javaclient: 2.0 aren't compatible.
So, I have to fix it to continue my work of programming, 
but I would want to know :
-will it a new version of Javaclient be released soon? Will it be compatible
with Player 2.1 series?
and
-if not, could you advise me on what versions are compatible ? And where can
I download them?
(and I need to interface Player with Stage 3.0.1; is it ok?)

Thanks for your time, and thanks for developing this librairies on java ^^ 
Skuld
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[Java-player-users] Problem updating new position of the simulated robot

From: Oscar J. R. L. <ojr...@ho...> - 2009-01-23 18:26:10


Hi all,

I am running the examples of JavaClient 2.0, but the robot doesn't move.
I printed out the positions after set a speed of 0.2 (posi.setSpeed(0.2, 0)) 
but the position is always the same, the new position is not updated.

What can I be doing wrong?
I haven't modified any of the code of the examples, so it's supposed to work.

I have tested the same player but using a C++ client and it works.

Thank you very much

 


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[Java-player-users] Updating the sonar readings - my simulated robot doesn't move

From: Oscar J. R. L. <ojr...@ho...> - 2009-01-23 11:27:10

Hi all,

Sorry for multiple request about this topic, but there was a mistake in the mailing lit and it was posted a question with my subject but with another question in the body of the message.

My question was:
I am startirg using JavaClient for Player Stage.
I have downloaded the Javaclient 2.0.1 version and I am trying to run the examples (space wanderer, wall follower, etc.) but it seems like something is wrong.

When I try to debug the application, the PlayerClient object is created succesfully, so I suppose the connection to player server is ok, and the requestInterfacePosition2D method is ok also.

however, when the PlayerClient object tries to call requestInterfaceSonar method, it returns a null reference. The same happens with laser and other devices.
I changed the method invocation order, so I call first the requestInterfaceSonar(0, PlayerConstants.PLAYER_OPEN_MODE) method, and after I call the requestInterfacePosition2D (0, PlayerConstants.PLAYER_OPEN_MODE) method. In this case, the PlayerClient returns an interface for the sonar.

Nevertheles, the robot does't move in spite of it sets a velocity of 0.2 en each step. I am printing out the position of the robot and this is always the same, it is not updated, so it get always the same sonar readings. I have set the MotorPower method to enabe anyway. I am using a Player Stage simulation, not a real-world robot.

Summarizing, I have these questions.
- The method invocation has an specific order? why does in the examples always call first the requestInterfacePosition2D method and it doesn't work in my simulation (I have to call first the request for the sonar interface)?
- Why my robot doesn't move? I have seen the C++ examples and always put the line setMotorEnable(true), so I did the same in java: setMotorPower(1), but it doesn't work neither.

Thank you very much for your help!
regards

Oscar

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[Java-player-users] Robot doesn't move - sonar reference is null

From: Oscar J. R. L. <ojr...@ho...> - 2009-01-22 17:42:22






Hi all,

I am startirg using JavaClient for Player Stage.
I have downloaded the Javaclient 2.0.1 version and I am trying to run the examples (space wanderer, wall follower, etc.) but it seems like something is wrong.

When I try to debug the application, the PlayerClient object is created succesfully, so I suppose the connection to player server is ok, and the requestInterfacePosition2D is ok also.

however, when the PlayerClient object tries to call requestInterfaceSonar method, it returns a null reference. The same happens with laser and other devices.
I changed the method invocation order, so I call first the requestInterfaceSonar(0, PlayerConstants.PLAYER_OPEN_MODE) method, and after that I call the requestInterfacePosition2D (0, PlayerConstants.PLAYER_OPEN_MODE) method. In this way, the PlayerClient returns an interface for the sonar finally.

Nevertheles, the robot does't move in spite of it sets a velocity of 0.2 en each step. The position is always the same, it is not updated, so it get the same sonar readings. I have set the MotorPower to enabe anyway. I am using a Player Stage simulation, not a real-world robot.

Thank you very much for your help!
regards

Oscar 


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Re: [Java-player-users] Questions about where to start upgrading JavaClient

From: Leo N. <leo...@gm...> - 2008-12-14 16:03:42

Hi there

I have received recently good news about this porting, and that is that I
have a new student under my supervision with a grant to develop this port,
so we all can work together ;)

Right now we are studing different posible C proprocessors to be able to
"parse" the javac.h file and generate "Java Value Object" able of encoding
and decoding themselves into and from XDR. The XDR library has some minor
changes, basically because we have ported also the javaclient to J2ME.
The first approach I made a year and a half ago was using the PCPP class
from "gluegen" project to do this work. I had some problems, like lacking
array support, and so on, that made me spend more time than programed at the
beggining. Now, and with this new guy working on this, I hope to be able to
release something not long from now.

Anyway we have to work on this also at the design level as I would like to
provide a much easier java client for player, specially regarding the
Threaded/nonThreaded stuff.

By the way, Radu (or any other one), do you have any sort of UML like
diagram of the current JavaClient?

2008/12/14 Tung Nguyen <ng....@gm...>

> Hi all,
>
> I was wondering if someone here could give me some tips on where to start
> upgrading JavaClient 2.0 to work with Player/Stage 2.1.x
>
> In an earlier thread in respond to Maria Staudte, Leo mentioned that:
>
> " The messages sent by the PS server have been modified since 2.0.5 so
> the javaclient proxies are trying to decode diferent size messages. This
> leads to strange behaviours, basically due to the fact that javaclient is
> unable to decode those messages."
>
> So should I start by modifying the way JavaClient 2.0 handles XDR message
> in a manner that is compatible to Player/Stage messages, or should I be
> fixing other parts of the client too ?
>
> Due to time constraint, I would like to be able to communicate (receive and
> send msgs) with some drivers only, will this take some load off the
> JavaClient upgrading process ?
>
> I considered Leo's response before about how wrapping would tie my control
> code down to a single platform, so I would love know how I can make use of
> the existing JavaClient 2.0.
>
> Thanks a lot,
>
> Tung
>
>
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-- 
**************************************
Leonardo Nomdedeu Calvente
leo...@gm...

[Java-player-users] Questions about where to start upgrading JavaClient

From: Tung N. <ng....@gm...> - 2008-12-14 04:45:25

Hi all,

I was wondering if someone here could give me some tips on where to start
upgrading JavaClient 2.0 to work with Player/Stage 2.1.x

In an earlier thread in respond to Maria Staudte, Leo mentioned that:

" The messages sent by the PS server have been modified since 2.0.5 so
the javaclient proxies are trying to decode diferent size messages. This
leads to strange behaviours, basically due to the fact that javaclient is
unable to decode those messages."

So should I start by modifying the way JavaClient 2.0 handles XDR message in
a manner that is compatible to Player/Stage messages, or should I be fixing
other parts of the client too ?

Due to time constraint, I would like to be able to communicate (receive and
send msgs) with some drivers only, will this take some load off the
JavaClient upgrading process ?

I considered Leo's response before about how wrapping would tie my control
code down to a single platform, so I would love know how I can make use of
the existing JavaClient 2.0.

Thanks a lot,

Tung

[Java-player-users] [Fwd: javaclient MapInterface]

From: Radu B. R. <ru...@cs...> - 2008-11-13 12:25:50

Forwarded to the appropriate mailing list...

-------- Original Message --------
Subject: javaclient MapInterface
Date: Thu, 13 Nov 2008 12:44:27 +0100
From: Diego Rivera Arranz <Die...@al...>
To: ru...@cs...

Hi,
I'm a studying computer engineering at the university of Castellon, Spain.
I'm doing a project which uses the javaclient library.
I'm having a little trouble with the MapInterface.
I'm trying to draw the simulated robot's map by requesting the MapDataVector,
but it's never ready.
It even fails to provide me the Map information when I request it.
Other devices like the laser or the sonar work perfectly.
Do you know what could be happening?
Thanks a lot for your help.

Re: [Java-player-users] JavaClient for Player/stage 2.1.x ?

From: Leo N. <leo...@gm...> - 2008-11-07 10:07:13

I agree with Radu. Wrappers are there to solve very specific problems, not
to wrap every C or C++ program or library to say it works on Java.

Obviously I will not complain if you develop the wrappers and they work
properly, it's your work and your effort, but I guess it will be more
painless and useful to design and develop a correct java solution.

The first and biggest drawback of a JNI approach I think will be the fact
that you will be developing a JavaClient tight to an specific OS (likely
linux). For me it's not a solution coz I work with all three major OS
(usually in MAC) but ... if it's enough for you and some other people, once
more I will not complain about that :)

Probably the best solution I see is to design a correct and proper Java
based solution, having in mind what is already developed, but not
compromising a good solution due to a not too good but already done
solution, and then consider a collaborative development.

Radu and I, do not have much free time, but I hope we will be able to
develop or at least give a ray of light in some aspects or some peaces of
the code.

Hope to be of any help.

Bests
Leo

2008/11/7 Radu Bogdan Rusu <ru...@cs...>

> Actually I haven't. When I started coding JavaClient, the swig interfaces
> that we were using for the python library were
> crap.
>
> Personally I don't like wrappers all that much, but hey, if it works, and
> people are happy, why not :)
>
> Radu.
>
> Tung Nguyen wrote:
> > Hi Radu and Leo,
> >
> > Thanks for your replies to my previous question, I really appreciate
> > them. I have another question for you though:
> > I'd like to know if using JNI to wrap around the player C (or C++)
> > client lib is another feasible/reasonable solution for communicating
> > with the player server.
> > I saw elsewhere people were considering using either JNI or CORBA for
> > this purpose.
> >
> > I guess you guys have already considered this option instead of writing
> > a java client completely from the ground up. If this is true, I would
> > really like to know the drawbacks of the JNI approach (if it's
> > reasonable at all) as opposed to writing a client from scratch
> > (JavaClient2).
> >
> > Thanks,
> >
> > Tung,
> >
> >
> >
> > ------------------------------------------------------------------------
> >
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-- 
**************************************
Leonardo Nomdedeu Calvente
leo...@gm...

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