So it looks like the error occurs outside of Zope, in your library... what has that got to do with 2.4.2? Cheers. -- Andy McKay. ----- Original Message ----- From: "Doyon, Jean-Francois" <Jean-Francois.Doyon@CCRS.NRCan.gc.ca> To: <zope@zope.org> Sent: Tuesday, October 30, 2001 1:04 PM Subject: [Zope] External Methods: Object behavior different in 2.4.2 ?

Hello,

I have an External Method that imports a module that in turn imports a Python/C library ... (A SWIG'ified software with shadow classes).

This used to work fine in 2.4.1 ... But now in 2.4.2 I am having problems:

It seems I can only run it once! If I hit refresh or something like that, I get the following error:

Traceback (innermost last): File /usr/local/Zope-2.4.2/lib/python/ZPublisher/Publish.py, line 223, in publish_module File /usr/local/Zope-2.4.2/lib/python/ZPublisher/Publish.py, line 187, in publish File /usr/local/Zope-2.4.2/lib/python/Zope/__init__.py, line 226, in zpublisher_exception_hook (Object: Zope) File /usr/local/Zope-2.4.2/lib/python/ZPublisher/Publish.py, line 171, in publish File /usr/local/Zope-2.4.2/lib/python/ZPublisher/mapply.py, line 160, in mapply (Object: drawmap) File /usr/local/Zope-2.4.2/lib/python/ZPublisher/Publish.py, line 112, in call_object (Object: drawmap) File

/usr/local/Zope-2.4.2/lib/python/Products/ExternalMethod/ExternalMethod.py,

line 274, in __call__ (Object: drawmap) (Info: ((400, 340, 'left'), {}, (400, 340, 'left'))) File /usr/local/Zope-2.4.2/Extensions/mapserver.py, line 6, in drawmap File /usr/lib/python2.1/mapscript.py, line 1041, in __setattr__ TypeError: Type error. Expected _p_mapObj

And on the console:

Exception exceptions.TypeError: 'Type error. Expected _p_mapObj' in <method mapObj.__del__ of mapObj instance at 0x895bafc> ignored

Here is the code, it is short:

from mapscript import * import tempfile

def drawmap(width=400,height=340,align="left"): mymap = mapObj("/home/mapdata/nac/177.map") mymap.width = width mymap.height = height myimage = mymap.draw() oldtempdir = tempfile.tempdir tempfile.tempdir = "" mytempfile = tempfile.mktemp() tempfile.tempdir = oldtempdir

msSaveImage(myimage,"/usr/local/apache/htdocs/tempimages/"+mytempfile,0,0,0,

0) return "<IMG SRC=http://localhost/tempimages/"+mytempfile+" ALIGN="+align+" BORDER=0>"

Note the "mapObj" called "mymap" ... It does all the work. From what I see above, once the object is instanciated, there's a problem destroying it, or instantiating a new one ... This might be why I get th error above.

Funny thing is this worked fine in 2.4.1 ... Is this a bug, or did some sort of behavior change with 2.4.2? And if so how do I get around it?

I tried adding a "mymap = None" here and there to force the object to be destroyed after/before use, but that didn't seem to help.

Any ideas?

Thanks in advance,

Jean-François Doyon Internet Service Development and Systems Support GeoAccess Division Canadian Center for Remote Sensing Natural Resources Canada http://atlas.gc.ca Phone: (613) 992-4902 Fax: (613) 947-2410

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