Jython

Hi,

I have been asked to maintain some java code that was developed on top 
of Jython 2.1. When testing existing code against Jython 2.5.1 I've 
noticed that the *PyJavaInstance* class is no longer present in the 
Jython API and therefore get a compilation error. Has it been replaced 
with another class? I tried to find one but with no success. More 
explicitly, I would like to check if a PyObject is a representation of a 
Java object. Consider the following code:

*/somePyObject instanceof PyJavaInstance
/*
Is there an easy way to obtain the same behaviour with Jython 2.5.1? Thanks!

Kind regards,
Thanos Tsounis

-- 
Thanos Tsounis
European Space Astronomy Centre (ESAC)
Research and Scientific Support Department
Herschel Science Centre - Data Processing
P.O. Box 78
28691 Villanueva de la Cañada
Madrid
Spain

mailto:thanos.tsounis@...
http://herschel.esac.esa.int
phone: +34 918131 178 


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*FYI, I'm sure that the people who know what's going on, saw your first set
of messages for this.
*
On Tue, Mar 9, 2010 at 6:55 AM, Thanos Tsounis <ttsounis@...:

>  Hi,
>
> I have been asked to maintain some java code that was developed on top of
> Jython 2.1. When testing existing code against Jython 2.5.1 I've noticed
> that the *PyJavaInstance* class is no longer present in the Jython API and
> therefore get a compilation error. Has it been replaced with another class?
> I tried to find one but with no success. More explicitly, I would like to
> check if a PyObject is a representation of a Java object. Consider the
> following code:
>
> *somePyObject instanceof PyJavaInstance
> *
> Is there an easy way to obtain the same behaviour with Jython 2.5.1?
> Thanks!
>
> Kind regards,
> Thanos Tsounis
>
> --
> Thanos Tsounis
> European Space Astronomy Centre (ESAC)
> Research and Scientific Support Department
> Herschel Science Centre - Data Processing
> P.O. Box 78
> 28691 Villanueva de la Cañada
> Madrid
> Spain
> mailto:thanos.tsounis@... <thanos.tsounis@... href="http://herschel.esac.esa.int" target="_new">http://herschel.esac.esa.int
> phone: +34 918131 178
>
> ================================================================================================
> This message and any attachments are intended for the use of the addressee or addressees only.
>
> The unauthorised disclosure, use, dissemination or copying (either in whole or in part) of its content is prohibited.
>
> If you received this message in error, please delete it from your system and notify the sender.
>
> E-mails can be altered and their integrity cannot be guaranteed.
>
> ESA shall not be liable for any e-mail if modified.
> =================================================================================================
>
>
>
> ------------------------------------------------------------------------------
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> proactively, and fine-tune applications for parallel performance.
> See why Intel Parallel Studio got high marks during beta.
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-- 
"I'm not responcabel fer my computer's spleling errnors" - Xlorep DarkHelm
Website: http://darkhelm.org

Here is what I am using for performing an is_java() test:

def is_java(obj):
    if is_proxy(obj):
        return True
    else:
        return isinstance(obj, Object)

def is_proxy(obj):
    try:
        return hasattr(obj, '_getPyInstance')
    except AttributeError:
        return False

You'll want to import java.lang.Object at the top of your module.

Hope this helps...

Josh Juneau
juneau001@...
http://jj-blogger.blogspot.com
http://www.jythonpodcast.com
Twitter ID:  javajuneau


On Tue, Mar 9, 2010 at 8:55 AM, Thanos Tsounis <ttsounis@...:

>  Hi,
>
> I have been asked to maintain some java code that was developed on top of
> Jython 2.1. When testing existing code against Jython 2.5.1 I've noticed
> that the *PyJavaInstance* class is no longer present in the Jython API and
> therefore get a compilation error. Has it been replaced with another class?
> I tried to find one but with no success. More explicitly, I would like to
> check if a PyObject is a representation of a Java object. Consider the
> following code:
>
> *somePyObject instanceof PyJavaInstance
> *
> Is there an easy way to obtain the same behaviour with Jython 2.5.1?
> Thanks!
>
> Kind regards,
> Thanos Tsounis
>
> --
> Thanos Tsounis
> European Space Astronomy Centre (ESAC)
> Research and Scientific Support Department
> Herschel Science Centre - Data Processing
> P.O. Box 78
> 28691 Villanueva de la Cañada
> Madrid
> Spain
> mailto:thanos.tsounis@... <thanos.tsounis@... href="http://herschel.esac.esa.int" target="_new">http://herschel.esac.esa.int
> phone: +34 918131 178
>
> ================================================================================================
> This message and any attachments are intended for the use of the addressee or addressees only.
>
> The unauthorised disclosure, use, dissemination or copying (either in whole or in part) of its content is prohibited.
>
> If you received this message in error, please delete it from your system and notify the sender.
>
> E-mails can be altered and their integrity cannot be guaranteed.
>
> ESA shall not be liable for any e-mail if modified.
> =================================================================================================
>
>
>
> ------------------------------------------------------------------------------
> Download Intel&#174; Parallel Studio Eval
> Try the new software tools for yourself. Speed compiling, find bugs
> proactively, and fine-tune applications for parallel performance.
> See why Intel Parallel Studio got high marks during beta.
> http://p.sf.net/sfu/intel-sw-dev
> _______________________________________________
> Jython-users mailing list
> Jython-users@...
> https://lists.sourceforge.net/lists/listinfo/jython-users
>
>