objectscript-users — a mailing list for objectscript users

Re: [Objectscript-users] using mountJarFile

[Rob C. <ro...@ti...>]

A couple things...

first, mounting it just makes it available within the abstract  
filesystem.  So you could then, for example, use pkg.fs.File() to  
access files within the jar (ie "/jar/xstream-SNAPSHOT/foo/bar.os").   
And of course if you have script files within the jar, they could be  
imported or accessed thru pkg.  But it does not add the jar to the  
classpath.  (Although I think this could be implemented, and it is an  
interesting idea... I'll have to look into it.)

second, you will probably need to use pkg.system.declareJavaPackage()  
for any java package that is first accessed from the script  
environment, otherwise the JavaPackage object has no way to know that  
the package actually exists, and so it will throw a  
NoSuchMemberException.



On Oct 6, 2005, at 6:10 PM, Lysander David wrote:

> Hi,
>
> How does one use pkg.system.mountJarFile  ?
>
> I am attempting to instantiate an object of
> class com.thoughtworks.xstream.XStream.
> The class exists in this jar:
>
> xstream-SNAPSHOT.jar
>
> When I execute these commands:
>
> import "reflection.os";
> var file = new pkg.fs.File ( "xstream-SNAPSHOT.jar" );
> pkg.system.mountJarFile     ( file );
> var com = new JavaPackage ("com" );
> var x = new com.thoughtworks.xstream.XStream();
>
>
> I get this error:
>
> oscript.exceptions.PackagedScriptObjectException:
> NoSuchMemberException: no such member: JavaPackage:
> thoughtworks
>
>
> What must be done to mount xstream-SNAPSHOT.jar
> and instantiate com.thoughtworks.xstream.XStream ?
>
> Thanks
>

-- Rob

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[Objectscript-users] using mountJarFile

[Lysander D. <sa...@sb...>]

Hi,

How does one use pkg.system.mountJarFile  ?

I am attempting to instantiate an object of
class com.thoughtworks.xstream.XStream.
The class exists in this jar:

xstream-SNAPSHOT.jar

When I execute these commands:

import "reflection.os";
var file = new pkg.fs.File ( "xstream-SNAPSHOT.jar" );
pkg.system.mountJarFile 	( file );
var com = new JavaPackage ("com" );
var x = new com.thoughtworks.xstream.XStream();


I get this error:

oscript.exceptions.PackagedScriptObjectException:
NoSuchMemberException: no such member: JavaPackage:
thoughtworks


What must be done to mount xstream-SNAPSHOT.jar
and instantiate com.thoughtworks.xstream.XStream ?

Thanks

Re: [Objectscript-users] Calling function from "inherited" object

[Rob C. <ro...@ti...>]

Hi Arjen,

it is possible, despite no "super" keyword...  since functions are  
just objects, you can save a private reference to the overridden  
function before you override it, like:


   private var super_someMethod = someMethod;
   public function someMethod( a, b, c )
   {
     super_someMethod( a, b, c );
     ...
   }

if you make the saved "super_someMethod" a private variable, it will  
not conflict with a same named variable in a parent or derived  
class.  If it were public/protected, it could be overriding a  
"super_someMethod" from a parent class, or be overridden by a derived  
class.

-- Rob


On Sep 25, 2005, at 6:14 AM, Arjen wrote:

> Hi,
>
> Is it possible to explicitly call a function from an "inherited"  
> object like
> the usage of the keyword "super" in Java?
> I can't find any documentation about this particular issue.
>
> Thanks for your help.
>
> /Arjen
>
>
>
> -------------------------------------------------------
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[Objectscript-users] Calling function from "inherited" object

[Arjen <ar...@va...>]

Hi,

Is it possible to explicitly call a function from an "inherited" object like 
the usage of the keyword "super" in Java?
I can't find any documentation about this particular issue.

Thanks for your help.

/Arjen 

Re: [Objectscript-users] Embedding java. Examples. More

[Rob C. <ro...@ti...>]

I think you need the two declareJavaPackage() line's uncommented...  
or, from java you can just call  
oscript.data.JavaPackageWrapper.declarePackage("com.novatecnologias")

or you can just create an initialize.os where you dump all the needed  
declareJavaPackage() calls, and then eval() this file at startup...  
it would be faster to put stuff in a .os file that gets loaded at  
startup, since the file will get compiled to a java classfile the  
first time it is executed, so the parser does not need to run each  
subsequent time.


-- Rob

On Sep 12, 2005, at 12:09 PM, Sergio Szychowski wrote:

> Hi,
>
> I trying to embed some scripts files but I have some errors and I  
> can't
> figure how to fix them.
>
>
> Some examples.
>
>
> Scope a = new BasicScope( OscriptInterpreter.getGlobalScope() );
>
> //OscriptInterpreter.eval("pkg.system.declareJavaPackage 
> (\"com.novatecnologias\");",a);
>
> //OscriptInterpreter.eval("pkg.system.declareJavaPackage 
> (\"com.novatecnologias.xf\");",a);
>
>   OscriptInterpreter.eval("var com = new JavaPackage(\"com\");", a);
>
>
> OscriptInterpreter.eval("var
> owner=com.novatecnologias.xf.pruabmBsh();",a);
> //I hate netscape
>
> AbstractFile file =OscriptInterpreter.resolve("javax/ 
> abm_cli.os",false);
>
> OscriptInterpreter.eval( file, a );
>
> oscript.exceptions.PackagedScriptObjectException:  
> NoSuchMemberException:
> no such member: JavaPackage: novatecnologias
>    at var owner = com.novatecnologias.xf.pruabmBsh();
> (/.tmp/0.2654966460115943/string-input.os:1)
>
> Greetings
>
>
>
>
>
> -------------------------------------------------------
> SF.Net email is Sponsored by the Better Software Conference & EXPO
> September 19-22, 2005 * San Francisco, CA * Development Lifecycle  
> Practices
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> Testing & QA
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> bsce5sf
> _______________________________________________
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>

-- Rob

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Re: [Objectscript-users] Embedding java. Examples.

[Rob C. <ro...@ti...>]

There are a couple caveats with dealing with java packages...

1) pkg.system.declareJavaPackage() is a bit simplistic... if you  
declare "a.b.c" this does not automatically declare the existence of  
"a.b"... one of these days, maybe I'll fix this... or maybe Sun will  
come up with a more reliable way to detect the existence of some java  
package so there would be no need for this ugly hack in the first place.

So you would (potentially) need to have something like:

   pkg.system.declareJavaPackage("com.novatechnolgias");
   pkg.system.declareJavaPackage("com.novatechnolgias.xf");

If someone out there knows any reliable way to detect the existence  
of a package, please let me know... unfortunately it seems that  
java.lang.Package.getPackage() only works if some java class from  
that package has already been accessed from the java environment.

2) being in the system classpath is different from an "import"... ie.  
you still need to use a fully qualified package name, or an import, ie:

   var pp = new com.novatechnolgias.xf.pruabmBsh();

or:

   mixin(com.novatechnolgias.xf);
   var pp = new pruabmBsh();

3) is xf.javax.swing.JMenuItem the full package + classname?  Or is  
it com.novatechnolgias .xf.javax.swing.JMenuItem?  If the former,  
then you will need to create a new JavaPackage object for the "xf"  
package root:

   const var xf = new JavaPackage("xf");

if the later, you will need something like:

   const var xf = com.novatechnolgias.xf;

(after the necessary pkg.system.declareJavaPackage stuff)




-- Rob


On Sep 12, 2005, at 11:32 AM, Sergio Szychowski wrote:

> Hi,
>
> I trying to embed some scripts files but I have some errors and I  
> can't
> figure how to fix them.
>
>
> Some examples.
>
>
>
> var pp = new pruabmBsh(); /* pruabmBsh belongs to  
> com.novatecnologias.xf
> package, and is in the system classpath */
> oscript.exceptions.PackagedScriptObjectException:  
> NoSuchMemberException:
> no such member: (global): pruabmBsh
>   at /u/jbproject/NovaTecnologiasXForms/javax/abm_cli.os:3
>
> var jmi_nuevo=new xf.javax.swing.JMenuItem();
>
> oscript.exceptions.PackagedScriptObjectException:  
> NoSuchMemberException:
> no such member: (global): xf
>   at /u/jbproject/NovaTecnologiasXForms/javax/abm_cli.os:22
>
>
> I  trying with JavaPackage() and pk.system.declareJavaPackage
> but always the same error, or similar  ( xf no such member, javax no
> such member, novatecnologias no such member, etc).
>
>
> Greetings
>
>
>
>
> -------------------------------------------------------
> SF.Net email is Sponsored by the Better Software Conference & EXPO
> September 19-22, 2005 * San Francisco, CA * Development Lifecycle  
> Practices
> Agile & Plan-Driven Development * Managing Projects & Teams *  
> Testing & QA
> Security * Process Improvement & Measurement * http://www.sqe.com/ 
> bsce5sf
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> https://lists.sourceforge.net/lists/listinfo/objectscript-users
>

[Objectscript-users] Embedding java. Examples. More

[Sergio S. <su...@in...>]

Hi,

I trying to embed some scripts files but I have some errors and I can't
figure how to fix them.


Some examples.


Scope a = new BasicScope( OscriptInterpreter.getGlobalScope() );

//OscriptInterpreter.eval("pkg.system.declareJavaPackage(\"com.novatecnologias\");",a);

//OscriptInterpreter.eval("pkg.system.declareJavaPackage(\"com.novatecnologias.xf\");",a);

  OscriptInterpreter.eval("var com = new JavaPackage(\"com\");", a); 


OscriptInterpreter.eval("var 
owner=com.novatecnologias.xf.pruabmBsh();",a);
//I hate netscape

AbstractFile file =OscriptInterpreter.resolve("javax/abm_cli.os",false);

OscriptInterpreter.eval( file, a );

oscript.exceptions.PackagedScriptObjectException: NoSuchMemberException: 
no such member: JavaPackage: novatecnologias
   at var owner = com.novatecnologias.xf.pruabmBsh(); 
(/.tmp/0.2654966460115943/string-input.os:1)

Greetings

[Objectscript-users] Embedding java. Examples.

[Sergio S. <su...@in...>]

Hi,

I trying to embed some scripts files but I have some errors and I can't 
figure how to fix them.


Some examples.



var pp = new pruabmBsh(); /* pruabmBsh belongs to com.novatecnologias.xf 
package, and is in the system classpath */
oscript.exceptions.PackagedScriptObjectException: NoSuchMemberException: 
no such member: (global): pruabmBsh
  at /u/jbproject/NovaTecnologiasXForms/javax/abm_cli.os:3

var jmi_nuevo=new xf.javax.swing.JMenuItem();

oscript.exceptions.PackagedScriptObjectException: NoSuchMemberException: 
no such member: (global): xf
  at /u/jbproject/NovaTecnologiasXForms/javax/abm_cli.os:22


I  trying with JavaPackage() and pk.system.declareJavaPackage
but always the same error, or similar  ( xf no such member, javax no 
such member, novatecnologias no such member, etc).


Greetings

Re: [Objectscript-users] Embedding error. Assing value.

[Rob C. <ro...@ti...>]

Hi Sergio,

I think you end up with val being the value of foo, rather than the  
reference to foo.  So what ends up happening is something like "5 =  
101;".  Try this instead:

    a.lookupInScope("foo").opAssign(...)

What you are trying used to work long ago, but then I realized that  
it had the result that someone could do something like "someFxn() =  
3;", which could let the caller modify private members of an object  
accessed thru an accessor function, which isn't good.  I need to  
update the embedder's guide... it is a bit out of date in this respect.

-- Rob

On Sep 7, 2005, at 4:53 AM, Sergio Szychowski wrote:

>
> Hi,
> when you want to assign a new value to a Value object, un exception is
> thrown.
>
>
>      Scope b = new BasicScope( OscriptInterpreter.getGlobalScope() );
>
>      try {
>        Value val = OscriptInterpreter.eval("var foo = 1;", a);
>        System.out.println("val= " + val ); // prints (null)
>        val = OscriptInterpreter.eval("foo = 1 + 4;", a);
>        System.out.println("val= " + val ); // prints 5
>
>        val.opAssign(JavaBridge.convertToScriptObject(101));
>     //throws exception
>          //oscript.exceptions.PackagedScriptObjectException:
> NoSuchMemberException: no such member: ExactNumber: =
>
>           ....
>       }
>       ....
>
> Greetings.
>
>

[Objectscript-users] Embedding error. Assing value.

[Sergio S. <su...@in...>]

Hi,
when you want to assign a new value to a Value object, un exception is 
thrown.


     Scope b = new BasicScope( OscriptInterpreter.getGlobalScope() );

     try {
       Value val = OscriptInterpreter.eval("var foo = 1;", a);
       System.out.println("val= " + val ); // prints (null)
       val = OscriptInterpreter.eval("foo = 1 + 4;", a);
       System.out.println("val= " + val ); // prints 5

       val.opAssign(JavaBridge.convertToScriptObject(101));
	//throws exception
         //oscript.exceptions.PackagedScriptObjectException: 		 
NoSuchMemberException: no such member: ExactNumber: =

          ....
      }
      ....

Greetings.

Re: [Objectscript-users] Embedding examples

[Rob C. <ro...@ti...>]

it is for the same reason that you can't do:


    a = var foo = 1;

"var foo" is a declaration rather than an expression.

If you want something that returns a value, and declares a variable,  
you can do something like:

   OscriptInterpreter.eval("var foo = 1; foo;");

the second statement after the ";" is an expression... the eval()  
should return the result of the last statement.


-- Rob

On Sep 6, 2005, at 11:49 AM, Sergio Szychowski wrote:

>
> Hi,
>
> in the examples of embedding some things not work, but may wasn't  
> errors
>
>
>
> -------------------------------------------------------------------
>       Value val = OscriptInterpreter.eval("var foo = 1;", a);
>       System.out.println("val= " + val );
>       //this example returns NULL, when you  done
> OscriptInterpreter.eval("var ...") always returns NULL
>
>
>       val = OscriptInterpreter.eval("foo = 1 + 4;", a);
>       System.out.println("val= " + val );
>       //here  returns   val= 5
>
>
> -------------------------------------------------------------------
>
>
> Greetings.
>
>
> -------------------------------------------------------
> SF.Net email is Sponsored by the Better Software Conference & EXPO
> September 19-22, 2005 * San Francisco, CA * Development Lifecycle  
> Practices
> Agile & Plan-Driven Development * Managing Projects & Teams *  
> Testing & QA
> Security * Process Improvement & Measurement * http://www.sqe.com/ 
> bsce5sf
> _______________________________________________
> Objectscript-users mailing list
> Obj...@li...
> https://lists.sourceforge.net/lists/listinfo/objectscript-users
>


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[Objectscript-users] Embedding examples

[Sergio S. <su...@in...>]

Hi,

in the examples of embedding some things not work, but may wasn't errors



-------------------------------------------------------------------
      Value val = OscriptInterpreter.eval("var foo = 1;", a);
      System.out.println("val= " + val );
      //this example returns NULL, when you  done  
OscriptInterpreter.eval("var ...") always returns NULL


      val = OscriptInterpreter.eval("foo = 1 + 4;", a);
      System.out.println("val= " + val );
      //here  returns   val= 5


-------------------------------------------------------------------


Greetings.

Re: [Objectscript-users] Running examples for awt or swing

[Rob C. <ro...@ti...>]

hmm, it is because the interpreter exits after the .os file is  
executed.  Try instead running the interpreter with no args to get a  
read-eval-print loop, and type:

   os> import "curve.os"



On Sep 3, 2005, at 12:55 PM, Sergio Szychowski wrote:

> When running awttest.os or curve.os,  the execution finalize  
> instantly,
> just display the window and exit.
>
>
> I have oscript-2.8.1 running in Suse 9.2 ( kernel 2.6.8), java  
> 1.5.0 rel 03
>
>
> java -jar oscript.jar  awttest.os
>
> and
>
>
> java -jar oscript.jar curve.os
>
>
> both execution finalize just after display the window, you not need to
> press any  button to close & exit.
>
>
>
>
> -------------------------------------------------------
> SF.Net email is Sponsored by the Better Software Conference & EXPO
> September 19-22, 2005 * San Francisco, CA * Development Lifecycle  
> Practices
> Agile & Plan-Driven Development * Managing Projects & Teams *  
> Testing & QA
> Security * Process Improvement & Measurement * http://www.sqe.com/ 
> bsce5sf
> _______________________________________________
> Objectscript-users mailing list
> Obj...@li...
> https://lists.sourceforge.net/lists/listinfo/objectscript-users
>


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[Objectscript-users] Running examples for awt or swing

[Sergio S. <su...@in...>]

When running awttest.os or curve.os,  the execution finalize instantly, 
just display the window and exit.


I have oscript-2.8.1 running in Suse 9.2 ( kernel 2.6.8), java 1.5.0 rel 03


java -jar oscript.jar  awttest.os

and


java -jar oscript.jar curve.os


both execution finalize just after display the window, you not need to 
press any  button to close & exit.

Re: [Objectscript-users] Java integration problem

[Rob C. <ro...@ti...>]

On Sep 13, 2004, at 4:12 AM, Josef JAHN wrote:

> Hello list,
>
> Since I can't acces the list archives (which appear to be completely 
> non-functional by the way), I'm posting this directly to this list.
>
> I have a script file that extends a java class and overloads a java 
> function in that class, "generateAtis(MetarData metarData)"
>
> Suppose you have this java snippet:
>
>          MetarData myMetarData = MetarInput.readMetarXML(inputXML);
>          Scope outputScope = new 
> BasicScope(OscriptInterpreter.getGlobalScope());
>          OscriptInterpreter.eval( 
> readScriptFile("scripts/AtisOutput.os"), outputScope );
>          OscriptInterpreter.eval("metarData;", 
> outputScope).opAssign(JavaBridge.convertToScriptObject(myMetarData));
>          Value oScript = OscriptInterpreter.eval("(new 
> ScriptedAtisOutput()).generateAtis(metarData)", outputScope);
>
> Also suppose that "var metarData;" is set in the script file that is 
> evaluated. The eval of "metarData" that I use to convert (or wrap) the 
> java object myMetarData to the script object metarData fails.
>
> The error message:
> oscript.exceptions.PackagedScriptObjectException: 
> NoSuchMemberException: no such member: (undefined): =

Hmm, try using lookupInScope instead:

   outputScope.lookupInScope("metarData").opAssign(...);

or, if you want to also create metarData from java:

   outputScope.createMember( "metarData", 0 ).opAssign(...);

The problem, I think, is that the eval() is returning the value of 
metarData, rather than a reference to metarData

> Any ideas? I have a very hard time digging through the documentation 
> as there are near zero actual java integration examples. Most of the 
> examples deal with script code, and writing whole applications in 
> script.

yeah, I apologize... I will try to find some time to update and enhance 
the java integration docs

----------------------
Rob Clark
Texas Instruments, Inc.
(858)552-2946
ro...@ti...
----------------------

[Objectscript-users] Java integration problem

[Josef J. <Jos...@fr...>]

Hello list,

Since I can't acces the list archives (which appear to be completely =
non-functional by the way), I'm posting this directly to this list.

I have a script file that extends a java class and overloads a java =
function in that class, "generateAtis(MetarData metarData)"

Suppose you have this java snippet:

         MetarData myMetarData =3D MetarInput.readMetarXML(inputXML);
         Scope outputScope =3D new BasicScope(OscriptInterpreter.getGlobalS=
cope());
         OscriptInterpreter.eval( readScriptFile("scripts/AtisOutput.os"), =
outputScope );
         OscriptInterpreter.eval("metarData;", outputScope).opAssign(JavaBr=
idge.convertToScriptObject(myMetarData));
         Value oScript =3D OscriptInterpreter.eval("(new ScriptedAtisOutput=
()).generateAtis(metarData)", outputScope);

Also suppose that "var metarData;" is set in the script file that is =
evaluated. The eval of "metarData" that I use to convert (or wrap) the =
java object myMetarData to the script object metarData fails.

The error message:
oscript.exceptions.PackagedScriptObjectException: NoSuchMemberException: =
no such member: (undefined): =3D


Any ideas? I have a very hard time digging through the documentation as =
there are near zero actual java integration examples. Most of the examples =
deal with script code, and writing whole applications in script.

I'm grateful for any and all help or pointers you could give me.



regards,


=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
DI (FH) Josef Jahn
Product Development Expert smartStrips

Tower and Airport Solutions
FREQUENTIS GmbH
Wolfganggasse 58-60
A-1120 Vienna, Austria
Tel.:  (+43) - 1 - 811 50 - 3222

e-mail: Jos...@fr...=20
home page:  www.taptools.com
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D