Re: [Zope] trying to implement server side xsl transform
I started trying a solution with libxml2/libxslt which did work in python on the command line but failed through the WEB While browsing the WEB I came across lxml and didn't spend much time on it but now looking at it I think the tools from 4suite still involve less code although there may be some better features offered with lxml I have only skimmed the documentation pages. With 4suite the simplest case is : from Ft.Xml.Xslt import Transform result = Transform((xmlfile, xsltfile) Although some examples show also importing TransformPath you will get messages with newer versions that TransformPath has been deprecated so it is not needed. Thanks, I am going to look some more at lxml. Thomas On Thursday 25 October 2007 08:53, Martijn Faassen wrote: > Hello, > > Concerning xslt transformations, you might want to consider an easier > API to use the XSLT infrastructure in libxml2/libxslt: lxml. See > http://codespeak.net/lxml > > Regards, > > Martijn > ___ > Zope maillist - Zope@zope.org > http://mail.zope.org/mailman/listinfo/zope > ** No cross posts or HTML encoding! ** > (Related lists - > http://mail.zope.org/mailman/listinfo/zope-announce > http://mail.zope.org/mailman/listinfo/zope-dev ) -- Thomas McMillan Grant Bennett Appalachian State University Operations & Systems AnalystP O Box 32026 University Library Boone, North Carolina 28608 (828) 262 6587 They say a picture is worth a thousand words. As videos could be 25 pictures per second and might last several minutes, how many words is that? - Linux Journal, July 2007 Library Systems Help Desk: http://www.library.appstate.edu/help/ ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] trying to implement server side xsl transform
Kees,
The files are dtml documents and use the xsl file correctly
when viewed in IE usually. When viewed in Opera the only
result is "XSLT processing failed!" on the browser page. In
Firefox the page doesn't show any images and some text is
not shown. These files relate to old records often used by
genealogists and from my experience they are usually elderly
and using old browsers but even a recent Firefox in linux I
just tried doesn't show some text or images.
Someone else is creating these files and I know there are
syntax problems with some pages but I don't have time to tutor
this author in XML, I just give comments and suggestions
occasionally such as use xmllint. I've only been asked to
implement server side transform on our Zope server.
4Suite does the transform by applying the xsl style sheet to the
xml file and returns formatted html text suitable for all browsers.
Ft in site-packages comes from 4suite, see 4suite.org for more info.
There are examples for other xsl tools at
http://uche.ogbuji.net/tech/akara/nodes/2003-01-01/python-xslt
The solution I ended up with even after the one in the reply to
myself lets you add /ead2xml on the end of the url of the xml
page(eg. htttp://www.mysite.mydomain/xmlfile.xml/ead2xml)
This implies that my External Method is called ead2xml and
it is. Below is ead2xml.py that does this. All of the pages use
the same xsl file so it is hard coded in the script.
from Products.PythonScripts.standard import html_quote
from ZPublisher import HTTPResponse
from Ft.Xml.Xslt import Transform
import string
def ft_transform(self):
request=self.REQUEST
response=self.REQUEST.RESPONSE
xmlfile="%s"%request.URL1[(len(request.URL2))+1:len(request.URL0)]
mysource="http://www.library.appstate.edu/appcoll/ead2002/%s"%xmlfile
result = Transform(mysource,
"http://www.library.appstate.edu/appcoll/ead2002/styles/eadbase.xsl";)
return result
Thomas
On Thursday 25 October 2007 03:33, Kees de Brabander wrote:
> I don't fully understand what your are doing, though I am interested in a
> xsl transformations in Zope.
> Your dtml must fail, however, because you can't use a dtml-tag within a
> python expression. I would upload the xml document as a dtml-document and
> call it just by its name.
> By the way: what role does 4suite play in your process?
> If you have a working solution, would you be willing to share it?
> cb
>
> -Oorspronkelijk bericht-
> Van: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Namens Thomas
> Bennett
> Verzonden: woensdag 24 oktober 2007 23:02
> Aan: zope@zope.org
> Onderwerp: [Zope] trying to implement server side xsl transform
>
> Zope Version (Zope 2.10.3-final, python 2.4.3, linux2)
> using zeo storage
>
> I am trying to implement a server side XSL Transform with the
> tools I have installed. I have 4suite, libxml2, and libxsl. The
> all of the files are dtml documents.
>
> Listing 1 below works on the command line and writes an html file named
> 'foo' to the file system. So I added a def, a parameter to receive, and
> indent Listing 1 appropriately to run as an External Method. I also found,
> from this list in September 2006, an almost identical External Method using
> parseDoc instead of parseFile, and SaveToString instead of SaveToFile, see
> Listing 2 and the traceback that follows it.
>
> All combinations and attempts to use an External Method result in either
> parseDoc or parseFile failing. Also, the Zope server will not respond to
> WEB clients for as long as it is trying to process the External Method and
> Apache times out in about 100 seconds with a Proxy error and I usually
> have to restart the Zope server to get access back to it through a WEB
> client although ps doesn't show any unusual processor or memory usage.
>
> I have tried using Listing 1 and then read the file back in to return the
> html text but still get the same result, parse failed.
>
> The test page, a dtml document, making the call only contains:
>
> ')"> or expr="C_xml2html('')">
>
>
> Thanks for any help,
>
> Thomas
>
>
>
>
> Listing 1 command line python script that works
>
> import libxml2
> import libxslt
>
> myxml="http://www.library.appstate.edu/appcoll/ead2002/0418rice.xml";
> styledoc =
> libxml2.parseFile("http://www.library.appstate.edu/appcoll/ead2002/styles/e
>a dbase.xsl")
> style=libxslt.parseStylesheetDoc(styledoc)
> doc=libxml2.parseFile(myxml)
> result=style.applyStylesheet(doc, None)
> style.saveResultToFilename("foo",result,0)
> style.freeStylesheet()
> doc.freeDoc
> result.freeDoc()
>
>
> Listing 2 External Method python script
> **
> import libxml2
> import libxslt
>
> stylestring = file("/var/zope/Extensions/eadbase.xsl").read()
>
> def xml2html(xmlfile):
>
> styledoc = libxml2.parseDoc(stylestring)
> style=libxslt.parseStylesheetDoc(styledoc)
> doc=libxml2.parseDoc(xmlfile)
> result=style.applyStylesheet(doc, None)
> html=style.
RE: [Zope] trying to implement server side xsl transform
Interesting. Thanks. cb -Oorspronkelijk bericht- Van: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Namens Martijn Faassen Verzonden: donderdag 25 oktober 2007 14:53 Aan: Kees de Brabander CC: [EMAIL PROTECTED]; zope@zope.org Onderwerp: Re: [Zope] trying to implement server side xsl transform Hello, Concerning xslt transformations, you might want to consider an easier API to use the XSLT infrastructure in libxml2/libxslt: lxml. See http://codespeak.net/lxml Regards, Martijn -- No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.503 / Virus Database: 269.15.10/1091 - Release Date: 24-10-2007 14:31 ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] trying to implement server side xsl transform
Hello, Concerning xslt transformations, you might want to consider an easier API to use the XSLT infrastructure in libxml2/libxslt: lxml. See http://codespeak.net/lxml Regards, Martijn ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
Re: [Zope] trying to implement server side xsl transform
On Wednesday 24 October 2007 23:35, Andreas Jung wrote: > --On 24. Oktober 2007 17:01:35 -0400 Thomas Bennett > > <[EMAIL PROTECTED]> wrote: > > Zope Version(Zope 2.10.3-final, python 2.4.3, linux2) > > using zeo storage > > > > I am trying to implement a server side XSL Transform with the > > tools I have installed. I have 4suite, libxml2, and libxsl. The > > all of the files are dtml documents. > > > > Listing 1 below works on the command line and writes an html > > file named 'foo' to the file system. So I added a def, a parameter > > to receive, and indent Listing 1 appropriately to run as an External > > Method. I also found, from this list in September 2006, an almost > > identical External Method using parseDoc instead of parseFile, > > and SaveToString instead of SaveToFile, see Listing 2 and the > > traceback that follows it. > > This it basically offtopic and unrelated to Zope. First get this fixed on > the Python level - then move your code to Zope. > I did mentioned above that "python myscript.py" did run on the command line but hung in Zope, or are you referring to something different by "Python level"? > > All combinations and attempts to use an External Method result in > > either parseDoc or parseFile failing. Also, the Zope server will not > > respond to WEB clients for as long as it is trying to process the > > External Method and Apache times out in about 100 seconds with a > > Proxy error and I usually have to restart the Zope server to get > > access back to it through a WEB client although ps doesn't show > > any unusual processor or memory usage. > > Keep in mind that Zope works by default with 4 worker threads. If they are > blocked with long-running processes than other requests will be queued and > their execution delayed until the next thread has finished this work. > > -aj I had my threads set to 10 but have upped them to 16 to see if that will make a difference, thanks. I've also upped the pool size because of several instances of 2007-10-24T10:33:07 WARNING ZODB.DB DB.open() has 10 open connections with a pool_size of 7 in the event log. Thanks, Thomas -- Thomas McMillan Grant Bennett Appalachian State University Operations & Systems AnalystP O Box 32026 University Library Boone, North Carolina 28608 (828) 262 6587 They say a picture is worth a thousand words. As videos could be 25 pictures per second and might last several minutes, how many words is that? - Linux Journal, July 2007 Library Systems Help Desk: http://www.library.appstate.edu/help/ ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
RE: [Zope] trying to implement server side xsl transform
I don't fully understand what your are doing, though I am interested in a
xsl transformations in Zope.
Your dtml must fail, however, because you can't use a dtml-tag within a
python expression. I would upload the xml document as a dtml-document and
call it just by its name.
By the way: what role does 4suite play in your process?
If you have a working solution, would you be willing to share it?
cb
-Oorspronkelijk bericht-
Van: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Namens Thomas
Bennett
Verzonden: woensdag 24 oktober 2007 23:02
Aan: zope@zope.org
Onderwerp: [Zope] trying to implement server side xsl transform
Zope Version(Zope 2.10.3-final, python 2.4.3, linux2)
using zeo storage
I am trying to implement a server side XSL Transform with the
tools I have installed. I have 4suite, libxml2, and libxsl. The
all of the files are dtml documents.
Listing 1 below works on the command line and writes an html file named
'foo' to the file system. So I added a def, a parameter to receive, and
indent Listing 1 appropriately to run as an External Method. I also found,
from this list in September 2006, an almost identical External Method using
parseDoc instead of parseFile, and SaveToString instead of SaveToFile, see
Listing 2 and the traceback that follows it.
All combinations and attempts to use an External Method result in either
parseDoc or parseFile failing. Also, the Zope server will not respond to
WEB clients for as long as it is trying to process the External Method and
Apache times out in about 100 seconds with a Proxy error and I usually have
to restart the Zope server to get access back to it through a WEB client
although ps doesn't show any unusual processor or memory usage.
I have tried using Listing 1 and then read the file back in to return the
html text but still get the same result, parse failed.
The test page, a dtml document, making the call only contains:
')"> or
Thanks for any help,
Thomas
Listing 1 command line python script that works
import libxml2
import libxslt
myxml="http://www.library.appstate.edu/appcoll/ead2002/0418rice.xml";
styledoc =
libxml2.parseFile("http://www.library.appstate.edu/appcoll/ead2002/styles/ea
dbase.xsl")
style=libxslt.parseStylesheetDoc(styledoc)
doc=libxml2.parseFile(myxml)
result=style.applyStylesheet(doc, None)
style.saveResultToFilename("foo",result,0)
style.freeStylesheet()
doc.freeDoc
result.freeDoc()
Listing 2 External Method python script
**
import libxml2
import libxslt
stylestring = file("/var/zope/Extensions/eadbase.xsl").read()
def xml2html(xmlfile):
styledoc = libxml2.parseDoc(stylestring)
style=libxslt.parseStylesheetDoc(styledoc)
doc=libxml2.parseDoc(xmlfile)
result=style.applyStylesheet(doc, None)
html=style.saveResultToString(result)
style.freeStylesheet()
doc.freeDoc
result.freeDoc()
return html
Traceback from the call using Listing 2
2007-10-24T16:29:56 ERROR Zope.SiteErrorLog
http://www.library.appstate.edu/appcoll/ead2002/_xmlxsltest.html
Traceback (innermost last):
Module ZPublisher.Publish, line 119, in publish
Module ZPublisher.mapply, line 88, in mapply
Module ZPublisher.Publish, line 42, in call_object
Module OFS.DTMLMethod, line 144, in __call__
-
- URL:
http://www.library.appstate.edu/appcoll/ead2002/_xmlxsltest.html/manage_
main
- Physical Path: /appcoll/ead2002/_xmlxsltest.html
Module DocumentTemplate.DT_String, line 476, in __call__
Module DocumentTemplate.DT_Util, line 196, in eval
- __traceback_info__: C_xml2html
Module , line 1, in
Module Products.ExternalMethod.ExternalMethod, line 231, in __call__
- __traceback_info__: (('',), {}, None)
Module /var/zope/Extensions/xmlxsltests.py, line 11, in xml2html
Module libxml2, line 1224, in parseDoc
parserError: xmlParseDoc() failed
--
Thomas McMillan Grant Bennett Appalachian State University
Operations & Systems AnalystP O Box 32026
University Library Boone, North Carolina 28608
(828) 262 6587
They say a picture is worth a thousand words. As videos could be 25
pictures per second and might last several minutes, how many words is that?
- Linux Journal, July 2007
Library Systems Help Desk: http://www.library.appstate.edu/help/
___
Zope maillist - Zope@zope.org
http://mail.zope.org/mailman/listinfo/zope
** No cross posts or HTML encoding! **
(Related lists -
http://mail.zope.org/mailman/listinfo/zope-announce
http://mail.zope.org/mailman/listinfo/zope-dev )
--
No virus found in this incoming message.
Checked by AVG Free Edition.
Version: 7.5.503 / Virus Database: 269.15.10/1091 - Release Date: 24-10-2007
14:31
___
Zope maillist -
Re: [Zope] trying to implement server side xsl transform
--On 24. Oktober 2007 17:01:35 -0400 Thomas Bennett <[EMAIL PROTECTED]> wrote: Zope Version(Zope 2.10.3-final, python 2.4.3, linux2) using zeo storage I am trying to implement a server side XSL Transform with the tools I have installed. I have 4suite, libxml2, and libxsl. The all of the files are dtml documents. Listing 1 below works on the command line and writes an html file named 'foo' to the file system. So I added a def, a parameter to receive, and indent Listing 1 appropriately to run as an External Method. I also found, from this list in September 2006, an almost identical External Method using parseDoc instead of parseFile, and SaveToString instead of SaveToFile, see Listing 2 and the traceback that follows it. This it basically offtopic and unrelated to Zope. First get this fixed on the Python level - then move your code to Zope. All combinations and attempts to use an External Method result in either parseDoc or parseFile failing. Also, the Zope server will not respond to WEB clients for as long as it is trying to process the External Method and Apache times out in about 100 seconds with a Proxy error and I usually have to restart the Zope server to get access back to it through a WEB client although ps doesn't show any unusual processor or memory usage. Keep in mind that Zope works by default with 4 worker threads. If they are blocked with long-running processes than other requests will be queued and their execution delayed until the next thread has finished this work. -aj pgpMzWxtEiF5U.pgp Description: PGP signature ___ Zope maillist - Zope@zope.org http://mail.zope.org/mailman/listinfo/zope ** No cross posts or HTML encoding! ** (Related lists - http://mail.zope.org/mailman/listinfo/zope-announce http://mail.zope.org/mailman/listinfo/zope-dev )
