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RE: [tcljava-user] Executing tcl script from java using Interp,need , ,help about classpath

[W. J. G. <gu...@ea...>]

I'm confused.

We've been doing just this for months and it's been working fine. We have a
Java process that loads and uses TclBlend and it's Interp and Notifier.

Am I missing something?

john


> -----Original Message-----
> From: tcl...@li...
> [mailto:tcl...@li...]On Behalf Of Mo DeJong
> Sent: Saturday, March 31, 2001 5:36 PM
> To: tcl...@li...
> Subject: Re: [tcljava-user] Executing tcl script from java using
> Interp,need , ,help about classpath
>
>
> On Fri, 30 Mar 2001, Ying Jin wrote:
>
> > We created a Java program that has these lines of code.  The
> code does not work for us and the problem appears to be the line
> that creates the new Interp object.
> >
> > We want to be able to call Interp.eval( ) from the Java
> program, sending it either a filename with tcl script or a string
> with a tcl command.  The eval method of the Interp object is
> documented in the following html file
> > from the documentation:
> > C:\unzipped\tclBlend126\tclBlend1.2.6\docs\TclJavaLib\Eval.htm
> > I hope this clarifies what we are trying to do.  At the moment,
> we are just trying to get the example from the documentation to work.
>
> It sounds like you are trying to load Tcl Blend into a JVM process.
> That is not supported in the 1.2 release of Tcl Blend.
>
> > Are you implying that creating and calling Interp from Java
> does not work?
>
> Yes.
>
> > We are confused when you say "That is all that is supported in version
> > 1.2."  Do you mean Java 1.2 or TclBlend 1.2?  What do you mean by 1.3
> > version in the CVS?
>
> Tcl Blend 1.2. The 1.3 version in the CVS is a bit closer to working
> in this scenario but more testing and debugging is needed. Everything
> should work just fine if you start Tcl first and then load the
> JVM into a Tcl process.
>
> Mo
>
> _______________________________________________
> tcljava-user mailing list
> tcl...@li...
> http://lists.sourceforge.net/lists/listinfo/tcljava-user

Re: [tcljava-user] Executing tcl script from java using Interp,need , ,help about classpath

[Mo D. <md...@cy...>]

On Fri, 30 Mar 2001, Ying Jin wrote:

> We created a Java program that has these lines of code.  The code does not work for us and the problem appears to be the line that creates the new Interp object.
> 
> We want to be able to call Interp.eval( ) from the Java program, sending it either a filename with tcl script or a string with a tcl command.  The eval method of the Interp object is documented in the following html file
> from the documentation:
> C:\unzipped\tclBlend126\tclBlend1.2.6\docs\TclJavaLib\Eval.htm
> I hope this clarifies what we are trying to do.  At the moment, we are just trying to get the example from the documentation to work.

It sounds like you are trying to load Tcl Blend into a JVM process.
That is not supported in the 1.2 release of Tcl Blend.

> Are you implying that creating and calling Interp from Java does not work?

Yes.

> We are confused when you say "That is all that is supported in version
> 1.2."  Do you mean Java 1.2 or TclBlend 1.2?  What do you mean by 1.3
> version in the CVS?

Tcl Blend 1.2. The 1.3 version in the CVS is a bit closer to working
in this scenario but more testing and debugging is needed. Everything
should work just fine if you start Tcl first and then load the
JVM into a Tcl process.

Mo

Re: [tcljava-user] Executing tcl script from java using Interp,need ,help about classpath

[Jiang Wu <jw...@CS...>]

Your usage scenario won't work with the stock 1.2.6 version of TclBlend.
You need at a minimum some patches.  See

http://www-cs-students/~jwu

There are some documentation and the patches for 1.2.6.

-- Jiang Wu
   jw...@cs...

Re: [tcljava-user] Executing tcl script from java using Interp,need ,help about classpath

[Ying J. <yi...@as...>]

Thank you for your response!

There is a snippet of code from the documentation that we are trying to get to work.  We are trying to create a tcl interpreter object from a Java program.  The link to the documentation file in our installed copy of
tclBlend is:
C:\unzipped\tclBlend126\tclBlend1.2.6\docs\TclJavaLib\Interp.htm

The snippet of code from that documentation says:

EXAMPLE

The following is an example of how an instance of the Interp object may be used:
Interp interp;
interp = new Interp();
interp.eval("puts {Hello, world}");
interp.dispose();

We created a Java program that has these lines of code.  The code does not work for us and the problem appears to be the line that creates the new Interp object.

We want to be able to call Interp.eval( ) from the Java program, sending it either a filename with tcl script or a string with a tcl command.  The eval method of the Interp object is documented in the following html file
from the documentation:
C:\unzipped\tclBlend126\tclBlend1.2.6\docs\TclJavaLib\Eval.htm
I hope this clarifies what we are trying to do.  At the moment, we are just trying to get the example from the documentation to work.

Are you implying that creating and calling Interp from Java does not work?  We are confused when you say "That is all that is supported in version 1.2."  Do you mean Java 1.2 or TclBlend 1.2?  What do you mean by 1.3
version in the CVS?

Amy Sundermier & Ying Jin


Mo DeJong wrote:

> On Wed, 28 Mar 2001, Ying Jin wrote:
>
> > Thank you very much!
> > I added tcljava.jar and tclblend.jar to my CLASSPATH, but I got the SAME error message. Could you give me further advise? Thanks a lot.
> > I got the SAME error message when I ran this java code inside tcl (After I type nmake shell). But I can successfully run other commands like "puts "say hello" " inside tcl. I also can create my own extension command.
> > The only problem is how to invoke tcl script by java code.
> > My code stop at new Interp(). Inside the constructor of Interp.java, the code stop at "interpPtr=create( ) ;".
> > Thanks a lot.
> > Ying
>
> Step 1:
>
> Run `nmake shell` that type `package require java`, that should
> work and return the version.
>
> Step 2:
>
> Get your CLASSPATH and PATH setup the same as in a
> `name shell` run. If that works you should be able
> to start tcl and run `package require java` without
> getting an error. If you get an error, then
> your path are not set correctly.
>
> That is all that is supported in version 1.2.
> Your "invoke tcl script by java code" comment is what
> has me wondering. Are you trying to load Tcl and
> Tcl Blend into an existing JVM? That is
> not supported in 1.2, but it does work
> in the 1.3 version in the CVS. Is that
> what you are trying to do?
>
> Mo DeJong
> Red Hat Inc
>
> _______________________________________________
> tcljava-user mailing list
> tcl...@li...
> http://lists.sourceforge.net/lists/listinfo/tcljava-user

Re: [tcljava-user] Executing tcl script from java using Interp,need , help about classpath

[Mo D. <md...@cy...>]

On Wed, 28 Mar 2001, Ying Jin wrote:

> Thank you very much!
> I added tcljava.jar and tclblend.jar to my CLASSPATH, but I got the SAME error message. Could you give me further advise? Thanks a lot.
> I got the SAME error message when I ran this java code inside tcl (After I type nmake shell). But I can successfully run other commands like "puts "say hello" " inside tcl. I also can create my own extension command.
> The only problem is how to invoke tcl script by java code.
> My code stop at new Interp(). Inside the constructor of Interp.java, the code stop at "interpPtr=create( ) ;".
> Thanks a lot.
> Ying

Step 1:

Run `nmake shell` that type `package require java`, that should
work and return the version.

Step 2:

Get your CLASSPATH and PATH setup the same as in a
`name shell` run. If that works you should be able
to start tcl and run `package require java` without
getting an error. If you get an error, then
your path are not set correctly.


That is all that is supported in version 1.2.
Your "invoke tcl script by java code" comment is what
has me wondering. Are you trying to load Tcl and
Tcl Blend into an existing JVM? That is
not supported in 1.2, but it does work
in the 1.3 version in the CVS. Is that
what you are trying to do?

Mo DeJong
Red Hat Inc

Re: [tcljava-user] Executing tcl script from java using Interp, need help about classpath

[D. J. H. <dha...@mi...>]

In the absence of more info from the stack trace, my guess is that the
Windows PATH needs to include the directories where the Java Runtime DLL's
can be found.  The .bat scripts included with tclblend may provide some
information on the paths/dlls needed.

			-=- D. J.

On Wed, 28 Mar 2001, Ying Jin wrote:

> Hello,
> I tried to run code:
>       Interp interp;
>       interp = new Interp();
>       interp.eval("puts {Hello, world}");
>       interp.dispose();
> --------------------------------------------
> I got error:
>     Exception in thread "main" java.lang.NullPointerException
>         at tcl.lang.Interp.create(Native Method)
>         at tcl.lang.Interp.<init>(Interp.java:130)
>         at RuleMgr.main(RuleMgr.java:11)
> tcl.lang.TclRuntimeError: could not find class java/lang/Object.
> Check that your path includes the directory where tclblend.dll resides.
> Try looking in the directories under the value of tcl_library..
> -----------------------------------------------------------
> But I already set path and classpath to the lib of tcl and tclblend:
>     set
> path=%path%;f:\jdk1.2.2\bin;C:\Progra~1\Tcl\lib;c:\Progrm~1\Tcl\lib\tclblend;c:\unzipped\tclblend126\tclblend1.2.6\win
> 
>     set classpath =
> %classpath%;f:\jdk1.2.2\lib;c:\unzipped\tcl823\tcl8.2.3\win;c:\unzipped\tclBlend126\tclBlend1.2.6\win\tclblend\;c:\unzipped\tclBlend126\tclBlend1.2.6\win\tcljava\;.;c:\Progra~1\tcl\lib\tclblend;C:\Progra~1\Tcl\lib
> 
> ---------------------------------------------------
> What should be added to the path and classpath?
> Thanks a lot.
> 
> 
> 
> 
> _______________________________________________
> tcljava-user mailing list
> tcl...@li...
> http://lists.sourceforge.net/lists/listinfo/tcljava-user
> 

Re: [tcljava-user] Executing tcl script from java using Interp,need help about classpath

[Ying J. <yi...@as...>]

Thank you very much!
I added tcljava.jar and tclblend.jar to my CLASSPATH, but I got the SAME error message. Could you give me further advise? Thanks a lot.
I got the SAME error message when I ran this java code inside tcl (After I type nmake shell). But I can successfully run other commands like "puts "say hello" " inside tcl. I also can create my own extension command.
The only problem is how to invoke tcl script by java code.
My code stop at new Interp(). Inside the constructor of Interp.java, the code stop at "interpPtr=create( ) ;".
Thanks a lot.
Ying

Mo DeJong wrote:

> On Wed, 28 Mar 2001, Ying Jin wrote:
>
> > Hello,
> > I tried to run code:
> >       Interp interp;
> >       interp = new Interp();
> >       interp.eval("puts {Hello, world}");
> >       interp.dispose();
> > --------------------------------------------
> > I got error:
> >     Exception in thread "main" java.lang.NullPointerException
> >         at tcl.lang.Interp.create(Native Method)
> >         at tcl.lang.Interp.<init>(Interp.java:130)
> >         at RuleMgr.main(RuleMgr.java:11)
> > tcl.lang.TclRuntimeError: could not find class java/lang/Object.
> > Check that your path includes the directory where tclblend.dll resides.
> > Try looking in the directories under the value of tcl_library..
> > -----------------------------------------------------------
> > But I already set path and classpath to the lib of tcl and tclblend:
> >     set
> > path=%path%;f:\jdk1.2.2\bin;C:\Progra~1\Tcl\lib;c:\Progrm~1\Tcl\lib\tclblend;c:\unzipped\tclblend126\tclblend1.2.6\win
> >
> >     set classpath =
> > %classpath%;f:\jdk1.2.2\lib;c:\unzipped\tcl823\tcl8.2.3\win;c:\unzipped\tclBlend126\tclBlend1.2.6\win\tclblend\;c:\unzipped\tclBlend126\tclBlend1.2.6\win\tcljava\;.;c:\Progra~1\tcl\lib\tclblend;C:\Progra~1\Tcl\lib
> >
> > ---------------------------------------------------
> > What should be added to the path and classpath?
> > Thanks a lot.
>
> You need to add tclblend.jar and tcljava.jar to the CLASSPATH.
> You can't just include the directory:
>
> set CLASSPATH=D:\tcljava.jar;D:\tclblend.jar
>
> Mo DeJong
> Red Hat Inc
>
> _______________________________________________
> tcljava-user mailing list
> tcl...@li...
> http://lists.sourceforge.net/lists/listinfo/tcljava-user

Re: [tcljava-user] Executing tcl script from java using Interp, need help about classpath

[Mo D. <md...@cy...>]

On Wed, 28 Mar 2001, Ying Jin wrote:

> Hello,
> I tried to run code:
>       Interp interp;
>       interp = new Interp();
>       interp.eval("puts {Hello, world}");
>       interp.dispose();
> --------------------------------------------
> I got error:
>     Exception in thread "main" java.lang.NullPointerException
>         at tcl.lang.Interp.create(Native Method)
>         at tcl.lang.Interp.<init>(Interp.java:130)
>         at RuleMgr.main(RuleMgr.java:11)
> tcl.lang.TclRuntimeError: could not find class java/lang/Object.
> Check that your path includes the directory where tclblend.dll resides.
> Try looking in the directories under the value of tcl_library..
> -----------------------------------------------------------
> But I already set path and classpath to the lib of tcl and tclblend:
>     set
> path=%path%;f:\jdk1.2.2\bin;C:\Progra~1\Tcl\lib;c:\Progrm~1\Tcl\lib\tclblend;c:\unzipped\tclblend126\tclblend1.2.6\win
> 
>     set classpath =
> %classpath%;f:\jdk1.2.2\lib;c:\unzipped\tcl823\tcl8.2.3\win;c:\unzipped\tclBlend126\tclBlend1.2.6\win\tclblend\;c:\unzipped\tclBlend126\tclBlend1.2.6\win\tcljava\;.;c:\Progra~1\tcl\lib\tclblend;C:\Progra~1\Tcl\lib
> 
> ---------------------------------------------------
> What should be added to the path and classpath?
> Thanks a lot.

You need to add tclblend.jar and tcljava.jar to the CLASSPATH.
You can't just include the directory:

set CLASSPATH=D:\tcljava.jar;D:\tclblend.jar

Mo DeJong
Red Hat Inc

[tcljava-user] Executing tcl script from java using Interp, need help about classpath

[Ying J. <yi...@as...>]

Hello,
I tried to run code:
      Interp interp;
      interp = new Interp();
      interp.eval("puts {Hello, world}");
      interp.dispose();
--------------------------------------------
I got error:
    Exception in thread "main" java.lang.NullPointerException
        at tcl.lang.Interp.create(Native Method)
        at tcl.lang.Interp.<init>(Interp.java:130)
        at RuleMgr.main(RuleMgr.java:11)
tcl.lang.TclRuntimeError: could not find class java/lang/Object.
Check that your path includes the directory where tclblend.dll resides.
Try looking in the directories under the value of tcl_library..
-----------------------------------------------------------
But I already set path and classpath to the lib of tcl and tclblend:
    set
path=%path%;f:\jdk1.2.2\bin;C:\Progra~1\Tcl\lib;c:\Progrm~1\Tcl\lib\tclblend;c:\unzipped\tclblend126\tclblend1.2.6\win

    set classpath =
%classpath%;f:\jdk1.2.2\lib;c:\unzipped\tcl823\tcl8.2.3\win;c:\unzipped\tclBlend126\tclBlend1.2.6\win\tclblend\;c:\unzipped\tclBlend126\tclBlend1.2.6\win\tcljava\;.;c:\Progra~1\tcl\lib\tclblend;C:\Progra~1\Tcl\lib

---------------------------------------------------
What should be added to the path and classpath?
Thanks a lot.

Re: [tcljava-user] incr Tcl support

[Mo D. <md...@cy...>]

On Mon, 12 Mar 2001, Shawn Boyce wrote:

> Has anyone ported [incr Tcl] to Java / Jacl?
>
> -Shawn

No. I looked into it, it would not be all that
hard. There is one bit of the Tcl namespace
code that would need to be implemented to
support Itcl (external resolvers).

Mo DeJong
Red Hat Inc

[tcljava-user] incr Tcl support

[Shawn B. <sh...@qc...>]

Has anyone ported [incr Tcl] to Java / Jacl?

--
-Shawn

Re: [tcljava-user] Status of Tcl/Java

[Mo D. <md...@cy...>]

On Sun, 11 Mar 2001, Shawn Boyce wrote:

> What is the status of Tcl/Java?

In development.

> When will the 1.3 release
> be stable for release?

I am not sure, depends on how quickly things get done.
Tcl Blend needs a lot of testing before it can be
considered safe for production use. I would also like
to get Jacl passing 99% of the Tcl 8.3 tests before
releasing 1.3. That work is being done, but more
developers helping out would make it go a lot faster.

> Also it would be really nice to have a detailed list of what
> is not supported by Jacl as compared to Tcl 8.x.

You mean, like the tcljava/diffs.txt file that is included
right now?

> FYI, my company started using Tcl in test simulators built using
> C/C++ in '97. When a need for a Java-based simulator came long
> in '99, we started using Jacl. The Tcl scripting language is a really
> good match for doing scripting. Tcl/Jacl makes it very easy to
> embed scripting in your application.
> 
> -Shawn

Glad you like it. Perhaps you would be interested in investing
some time improving Jacl. There is still a lot of work that
needs to be done with respect to Tcl 8.3 test cases. If you
are interested, join the tcljava-dev mailing list and let
folks know you are willing to help.

Mo DeJong
Red Hat Inc

[tcljava-user] Status of Tcl/Java

[Shawn B. <sh...@qc...>]

What is the status of Tcl/Java? When will the 1.3 release
be stable for release?

Also it would be really nice to have a detailed list of what
is not supported by Jacl as compared to Tcl 8.x.

FYI, my company started using Tcl in test simulators built using
C/C++ in '97. When a need for a Java-based simulator came long
in '99, we started using Jacl. The Tcl scripting language is a really
good match for doing scripting. Tcl/Jacl makes it very easy to
embed scripting in your application.

-Shawn

Re: [tcljava-user] [Tcl Java] Help Request - repost WithOut the HTML, my apologie

[Mo D. <md...@cy...>]

Cliff, what part of "Don't post in HTML"
did you not understand? You are still doing it!

Mo DeJong
Red Hat Inc

[tcljava-user] [Tcl Java] Help Request - repost WithOut the HTML, my apologie

[Cliff R. <cl...@el...>]

Hello:

I looked at a similar request in the archives [30Oct2000] and I am have
trouble getting any output back from the tcl script. Using the modified
sample suggested by Mo DeJong. I am able to get an output returned
from the simple tcl script when called by CallTcl.java.
myTest.tcl returns a value to the java program when it contains:
//myTest.tcl
return [exec date]
exit0;
But it hangs when I try:
//mytest.tcl
return [exec xclock \&]
exit0;
It never returns...

What I'm trying to learn is, how to return a process ID of an app launched
by tcl to java. The original expect script spawned a shell process that
returned the process of the spawned shell.
From there, I used ps -s to get the process id of the java process launched
by the shell. I want to later kill that java process started by the shell.
I get, pipe not supported exception message when I tried:

if [catch {open "|$command }]

So I'm experimenting... execute the expect script and get the return, but it
also hangs. Figure out how to change the script to tcl with out using open
pipe. So I am using the xclock to fiddle with how to get the process ID
with out hanging.
I am using:
   tcl8.3.2 from TclPro1.5 (solaris-sparc)
   jacl1.2.6 and tclBlend1.2.6
for this exercise...

thanks in advance and then-some :-)

Cliff

// learning sample that executes the tcl script that returns a process id
import tcl.lang.*;
public class CallTcl {
    Interp interp = new Interp();
    public String evalScript( String s ) throws TclException
    {
        interp.eval( "source " + s );
        System.out.println("-> " + interp.getResult().toString() );
        return interp.getResult().toString();
    }
    public static void main( String args[] ) throws Exception
    {
        CallTcl callTcl = new CallTcl();
        String cmd = "myTest.tcl";
        try
        {
            callTcl.evalScript( cmd );
        }
        catch ( TclException te )
        {
            te.printStackTrace();
        }
        callTcl.interp.dispose();
    }
}
// this was the origional expect script I'm trying to convert to tcl
#! /opt/ajuba/TclPro1.5/solaris-sparc/bin/expect --
    global spawn_id env
    set web_start $env(MISC_SHELLPATH)/bin/start.sh
    set web_id [spawn -noecho $web_start]
    set spawn_id $spawn_id
    sleep 2
    set buf01 [exec ps -s$web_id]
    set jindex [lsearch $buf01 "java"]
    set wl_pid [lindex $buf01 [expr $jindex - 3]]
    return $wl_pid

Re: [tcljava-user] Help executing tcl script from java - long post with s ource

[D. J. H. <dha...@mi...>]

It appears that you're attempting to manage processes from Jacl, not
TclBlend, correct?  Jacl's process and pipeline handling is not very
sophisticated, primarily due to lack of sophistication in the underlying
Java API's for managing processes.

If you look through the current source code for the "exec" command in
Jacl, you'll see that it generates a little in-line Bourne Shell script so
that at least some redirection operations will function.  It'll generate
something like:

    /bin/sh -c "xclock &"

for your command, which will have issues on many systems where /bin/sh
lacks job control (e.g., Solaris).

There are also some issues with exec not trapping more that a few kb of
output to stderr and stdout.  These issues are only solveable by using
Java threads, where Jacl, currently, is pretty much single-thread
oriented.

If you really want Tcl's easy/robust process management, stick with the C
implementation of Tcl and add in TclBlend if you need to do Java stuff as
well.  If you are bound and determined to use Java, you will probably need
to write a bunch of Java code to use the Runtime and Process classes along
with some threads to get your expected results.

[and I'll agree with Mo that HTML emails to this list are a distraction
and heavily discouraged]

			-=- D. J.

Re: [tcljava-user] [Tcl Java] Help executing tcl script from java - long post with s ource

[Mo D. <md...@cy...>]

On Fri, 2 Mar 2001, Cliff Rather wrote:

(Bunch of stuff in HTML)

Cliff, please disable HTML in your email before posting to
the tcljava list again. It is strictly forbidden.

Mo DeJong
Red Hat Inc

[tcljava-user] [Tcl Java] Help executing tcl script from java - long post with s ource

[Cliff R. <cl...@el...>]

Hello:

I looked at a similar request in the archives [30Oct2000] and I am have
trouble getting any
output back from the tcl script. Using the modified sample suggested by Mo
DeJong. I am
able to get an output returned from the simple tcl script when called by
CallTcl.java.
myTest.tcl returns a value to the java program when it contains:

//myTest.tcl
return [exec date]
exit0;

But it hangs when I try:

//mytest.tcl
return [exec xclock \&]
exit0;

It never returns...

What I'm trying to learn is, how to return a process ID of an app launched
by tcl to java. The
original expect script spawned a shell process that returned the process of
the spawned shell.
From there, I used ps -s to get the process id of the java process launched
by the shell. I want
to later kill that java process started by the shell. I get, pipe not
supported exception message
when I tried:

if [catch {open "|$command }]

So I'm experimenting... execute the expect script and get the return, but it
also hangs.
Figure out how to change the script to tcl with out using open| pipe. So I
am using the xclock
to fiddle with how to get the process ID with out hanging.

I am using:
   tcl8.3.2 from TclPro1.5 (solaris-sparc)
   jacl1.2.6 and tclBlend1.2.6
for this exercise...

thanks in advance and then-some :-)

Cliff

// learning sample that executes the tcl script that returns a process id
import tcl.lang.*;
public class CallTcl {
    Interp interp = new Interp();
    public String evalScript( String s ) throws TclException
    {
        interp.eval( "source " + s );
        System.out.println("-> " + interp.getResult().toString() );
        return interp.getResult().toString();
    }

    public static void main( String args[] ) throws Exception
    {
        CallTcl callTcl = new CallTcl();
        String cmd = "myTest.tcl";
        try
        {
            callTcl.evalScript( cmd );
        }
        catch ( TclException te )
        {
            te.printStackTrace();
        }
        callTcl.interp.dispose();
    }
}

// this was the origional expect script I'm trying to convert to tcl
#! /opt/ajuba/TclPro1.5/solaris-sparc/bin/expect --
    global spawn_id env

    set web_start $env(MISC_SHELLPATH)/bin/start.sh
    set web_id [spawn -noecho $web_start]
    set spawn_id $spawn_id
    sleep 2

    set buf01 [exec ps -s$web_id]
    set jindex [lsearch $buf01 "java"]
    set wl_pid [lindex $buf01 [expr $jindex - 3]]

    return $wl_pid

[tcljava-user] A TclBlend slide show.

[Mo D. <md...@cy...>]

I just ran across this TclBlend one the net:

http://wwwatomsca.atnf.csiro.au/SEP/presentations/TclBlend/

Mo DeJong
Red Hat Inc

[tcljava-user] Re: RE: [Tcl Java] Re: Interrupting a Interp.eval()

[W. J. G. <gu...@ea...>]

Sorry for the late reply - it's been a long time (and a couple of projects
;) since I played with Tcl/Tcl Blend.

We had the same issue with "runaway TCL interps." I solved it by adding a
flag to the interp structure, which the Tcl byte code engine checks after
each individual bytecode execution. If the flag is non-zero, the bytecode
engine does an "abnormalReturn" which causes it to abort (cleanly!) I then
added a new method that can be called on the interp - abortExecution().

it seems to work quite well.

john


> -----Original Message-----
> From: Mo DeJong [mailto:md...@cy...]
> Sent: Thursday, July 27, 2000 6:18 PM
> To: Marc Saegesser
> Cc: tc...@sc...
> Subject: [Tcl Java] Re: Interrupting a Interp.eval()
>
>
> On Thu, 27 Jul 2000, Marc Saegesser wrote:
>
> > I'm embedding several Tcl interpreters inside a JVM.  I'm
> currently using
> > Jacl, but will probably switch to TclBlend at some point in the future.
> >
> > I'm trying to work out the best approach for cleanly shutting down these
> > embedded interpreters.  If everything is running normally, I can post a
> > TclEvent object whose processEvent() method calls Interp.dispose() and
> > causes the event loop to terminate.
> >
> > The problem with this is that I don't see a way to stop an
> interpreter that
> > has run amok.  Suppose that Interp.eval() is processing a script that is
> > stuck in an infinite loop.  The notifier's event loop isn't
> processing new
> > events to my shutdown TclEvent will never get processed.  Is
> there a good
> > method for aborting a call to Interp.eval()?
>
> There is no way to do this in Jacl. The "how do I stop a runaway thread"
> problem is a very tricky one. The best you can really do is put and event
> into the queue and code your app so it notices the "quit now" event.

[tcljava-user] RE: tcljava-user digest, Vol 1 #19 - 5 msgs

[Archana B. <AB...@SE...>]

hi,
	the unsupported::jdetachcall helped and java::bind started working.

but there is one place where i am attaching a listener to the combobox and
again there it is getting hanged.
the combobox is inside dialogbox.

-thanks archana
-----Original Message-----
From: tcl...@li...
[mailto:tcl...@li...]
Sent: Wednesday, February 07, 2001 1:36 AM
To: tcl...@li...
Subject: tcljava-user digest, Vol 1 #19 - 5 msgs


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Today's Topics:

   1. java::bind problem (Archana Bonde)
   2. Re: java::bind problem (Mo DeJong)
   3. FW: java::bind does not work (Archana Bonde)
   4. RE: Tcl scripts inside EJB (Vikram Rajan)
   5. RE: Tcl scripts inside EJB (Mo DeJong)

--__--__--

Message: 1
From: Archana Bonde <AB...@SE...>
To: tcl...@li...
Date: Tue, 6 Feb 2001 11:55:43 +0530 
Subject: [tcljava-user] java::bind problem
Reply-To: tcl...@li...

hi,
   I am trying to develop an application using Jacl. I wrote a small
experimental script in that java::bind seems to be working fine but 
in my application the whole thing gets hanged. I  am unable to describe the
error. Is this a bug with the Jacl or there wud be some mistake in my code.
Pls help as soon as possible.
I tried the tcljava CVS bugs directory but cud not really trace the problem.
-Thanks Archana


--__--__--

Message: 2
Date: Mon, 5 Feb 2001 22:30:34 -0800 (PST)
From: Mo DeJong <md...@cy...>
To: tcl...@li...
Subject: Re: [tcljava-user] java::bind problem
Reply-To: tcl...@li...

On Tue, 6 Feb 2001, Archana Bonde wrote:

> hi,
>    I am trying to develop an application using Jacl. I wrote a small
> experimental script in that java::bind seems to be working fine but 
> in my application the whole thing gets hanged. I  am unable to describe
the
> error. Is this a bug with the Jacl or there wud be some mistake in my
code.
> Pls help as soon as possible.
> I tried the tcljava CVS bugs directory but cud not really trace the
problem.
> -Thanks Archana

Please read these two posts from the old mailing list and
see if this is the same problem.

http://www.mail-archive.com/tc...@sc.../msg00957.html
http://www.mail-archive.com/tc...@sc.../msg00958.html

Mo DeJong
Red Hat Inc


--__--__--

Message: 3
From: Archana Bonde <AB...@SE...>
To: tcl...@li...
Date: Tue, 6 Feb 2001 12:10:14 +0530 
Subject: [tcljava-user] FW: java::bind does not work
Reply-To: tcl...@li...



>  -----Original Message-----
> From: 	Archana Bonde  
> Sent:	Tuesday, February 06, 2001 12:06 PM
> To:	'tcl...@li...'
> Subject:	FW: java::bind does not work 
> 
> 
> 
>  -----Original Message-----
> From: 	Archana Bonde  
> Sent:	Thursday, December 14, 2000 11:55 AM
> To:	'tcl...@li...'
> Subject:	java::bind does not work 
> 
> i tried using java::bind for binding a routine to a button, the action is
> not performed. The routine does not execute and the dialogbox on which the
> button is there loses the focus. and the close icon on the dialog boxdoes
> not work also.So i have to control C (abort) the application. Not even a
> simple routine which has a puts(putouts string on console) in it, work.
> Why??  	
> It does not recognise the java objects	
> gives error cannopt find f and; no such variable, whereas f is defined and
> initialsed by me 	
> 
> The application seems to stalllllllllllll .Is this a bug with Jacl.


--__--__--

Message: 4
From: Vikram  Rajan <Vi...@PL...>
To: "'tcl...@li...'"
	 <tcl...@li...>
Subject: RE: [tcljava-user] Tcl scripts inside EJB
Date: Tue, 6 Feb 2001 12:23:01 +0530 
Reply-To: tcl...@li...

hi,

It was a classpath problem. The Jacl interpreter loads classes using the
JAVA_CLASSPATH, while weblogic uses the WEBLOGIC_CLASSPATH. For the
interpreter to be able to load classes within scripts, they need to be in
the java classpath. This again can be a problem at times with weblogic since
classes specified in both classpath variables cannot be loaded correctly by
weblogic. But I guess, we need to live with that :-)

regards,
Vikram Rajan


> -----Original Message-----
> From:	Mo DeJong [SMTP:md...@cy...]
> Sent:	Monday, January 29, 2001 9:35 AM
> To:	tcl...@li...
> Subject:	Re: [tcljava-user] Tcl scripts inside EJB
> 
> On Mon, 29 Jan 2001, Vikram Rajan wrote:
> 
> > hi,
> > 
> > I am running Tcl scripts inside EJBs by passing a script to the Jacl
> > Interpreter. The problem that I am facing is that am not able to
> instantiate
> > any Java classes inside the script. A TclException is thrown if I try
> that.
> 
> Humm, that should not happen. I am willing to bet that for
> some reason the class is not being found by the Java
> runtime.
> 
> > Currently I have to pass all required objects to the interpreter using
> the
> > setVar() method before running the script.
> > Is this a restriction of Jacl or am I doing something wrong?
> 
> I don't think so. Could you provide more info, like the error that
> is printed? Also, if you could provide a simple example
> that does not work, that would really help.
> 
> I am willing to be you are running into some strange issue
> that only happens when in your environment. This sort
> of thing is almost always caused by CLASSPATH problems
> or something to do with classloaders.
> 
> You can test to see if a given class is visible
> from inside Jacl or Tcl Blend like so:
> 
> % java::import java.util.Hashtable
> 
> % java::import java.unknown
> can not import class "java.unknown", it does not exist
> 
> Mo DeJong
> Red Hat Inc
> 
> _______________________________________________
> tcljava-user mailing list
> tcl...@li...
> http://lists.sourceforge.net/lists/listinfo/tcljava-user


--__--__--

Message: 5
Date: Mon, 5 Feb 2001 22:51:32 -0800 (PST)
From: Mo DeJong <md...@cy...>
To: tcl...@li...
Subject: RE: [tcljava-user] Tcl scripts inside EJB
Reply-To: tcl...@li...

On Tue, 6 Feb 2001, Vikram Rajan wrote:

> hi,
> 
> It was a classpath problem. The Jacl interpreter loads classes using the
> JAVA_CLASSPATH, while weblogic uses the WEBLOGIC_CLASSPATH. For the
> interpreter to be able to load classes within scripts, they need to be in
> the java classpath. This again can be a problem at times with weblogic
since
> classes specified in both classpath variables cannot be loaded correctly
by
> weblogic. But I guess, we need to live with that :-)
> 
> regards,
> Vikram Rajan

This workaround might just do the trick for you. You would
need to put it in your init code somewhere.

% set env(TCL_CLASSPATH) $env(WEBLOGIC_CLASSPATH)

Mo DeJong
Red Hat Inc



--__--__--

_______________________________________________
tcljava-user mailing list
tcl...@li...
http://lists.sourceforge.net/lists/listinfo/tcljava-user


End of tcljava-user Digest

RE: [tcljava-user] RE: tcljava-user digest, Vol 1 #19 - 5 msgs

[Anil K. <An...@SE...>]

could u pls send me the piece of code u r using..
Anil.

-----Original Message-----
From: Archana Bonde [mailto:AB...@SE...]
Sent: Wednesday, February 07, 2001 11:28 AM
To: tcl...@li...
Subject: [tcljava-user] RE: tcljava-user digest, Vol 1 #19 - 5 msgs


hi,

Yes the java::bind problem is almost similar. 
If the procedure is normally called it runs fine but as soon as i bind it
with the evnt.
Nothing from the handler script is executed and the whole application hangs.
I have to abort the application.
Problem seems to be similar. I am also using JDialog boxes etc.and many
other swing components.
-thanks Archana


_______________________________________________
tcljava-user mailing list
tcl...@li...
http://lists.sourceforge.net/lists/listinfo/tcljava-user

[tcljava-user] RE: tcljava-user digest, Vol 1 #19 - 5 msgs

[Archana B. <AB...@SE...>]

hi,

Yes the java::bind problem is almost similar. 
If the procedure is normally called it runs fine but as soon as i bind it
with the evnt.
Nothing from the handler script is executed and the whole application hangs.
I have to abort the application.
Problem seems to be similar. I am also using JDialog boxes etc.and many
other swing components.
-thanks Archana

RE: [tcljava-user] Tcl scripts inside EJB

[Mo D. <md...@cy...>]

On Tue, 6 Feb 2001, Vikram Rajan wrote:

> hi,
> 
> It was a classpath problem. The Jacl interpreter loads classes using the
> JAVA_CLASSPATH, while weblogic uses the WEBLOGIC_CLASSPATH. For the
> interpreter to be able to load classes within scripts, they need to be in
> the java classpath. This again can be a problem at times with weblogic since
> classes specified in both classpath variables cannot be loaded correctly by
> weblogic. But I guess, we need to live with that :-)
> 
> regards,
> Vikram Rajan

This workaround might just do the trick for you. You would
need to put it in your init code somewhere.

% set env(TCL_CLASSPATH) $env(WEBLOGIC_CLASSPATH)

Mo DeJong
Red Hat Inc

RE: [tcljava-user] Tcl scripts inside EJB

[Vikram R. <Vi...@PL...>]

hi,

It was a classpath problem. The Jacl interpreter loads classes using the
JAVA_CLASSPATH, while weblogic uses the WEBLOGIC_CLASSPATH. For the
interpreter to be able to load classes within scripts, they need to be in
the java classpath. This again can be a problem at times with weblogic since
classes specified in both classpath variables cannot be loaded correctly by
weblogic. But I guess, we need to live with that :-)

regards,
Vikram Rajan


> -----Original Message-----
> From:	Mo DeJong [SMTP:md...@cy...]
> Sent:	Monday, January 29, 2001 9:35 AM
> To:	tcl...@li...
> Subject:	Re: [tcljava-user] Tcl scripts inside EJB
> 
> On Mon, 29 Jan 2001, Vikram Rajan wrote:
> 
> > hi,
> > 
> > I am running Tcl scripts inside EJBs by passing a script to the Jacl
> > Interpreter. The problem that I am facing is that am not able to
> instantiate
> > any Java classes inside the script. A TclException is thrown if I try
> that.
> 
> Humm, that should not happen. I am willing to bet that for
> some reason the class is not being found by the Java
> runtime.
> 
> > Currently I have to pass all required objects to the interpreter using
> the
> > setVar() method before running the script.
> > Is this a restriction of Jacl or am I doing something wrong?
> 
> I don't think so. Could you provide more info, like the error that
> is printed? Also, if you could provide a simple example
> that does not work, that would really help.
> 
> I am willing to be you are running into some strange issue
> that only happens when in your environment. This sort
> of thing is almost always caused by CLASSPATH problems
> or something to do with classloaders.
> 
> You can test to see if a given class is visible
> from inside Jacl or Tcl Blend like so:
> 
> % java::import java.util.Hashtable
> 
> % java::import java.unknown
> can not import class "java.unknown", it does not exist
> 
> Mo DeJong
> Red Hat Inc
> 
> _______________________________________________
> tcljava-user mailing list
> tcl...@li...
> http://lists.sourceforge.net/lists/listinfo/tcljava-user