python-ldap-dev

DSMLParser example

[Yves D. <yv...@zi...>]

Is there a simple example for dsml.DSMLParser() somewhere ?

I am trying to use it, but getting errors. The documentation does not 
explain what "ContentHandlerClass" is supposed to be.

I have tried:
x = dsml.DSMLParser(input_file, dsml.DSMLv1Handler)

But eventually it fails with an HTTP 404 error...


Thanks.

-- 
Yves.
http://www.sollers.ca/blog/2008/swappiness
http://www.sollers.ca/blog/2008/swappiness/.fr

Re: DSMLParser example

[Michael S. <mi...@st...>]

Yves Dorfsman wrote:
> Is there a simple example for dsml.DSMLParser() somewhere ?

No, this module is rather unmaintained.

IIRC it mainly works like module ldif: You should sub-class
dsml.DSMLParser implementing a custom method .handle(). Note that it
only supports DMSLv1 which is not what you want today.

> I have tried:
> x = dsml.DSMLParser(input_file, dsml.DSMLv1Handler)
> 
> But eventually it fails with an HTTP 404 error...

???

Ciao, Michael.

Re: DSMLParser example

[Yves D. <yv...@zi...>]

Michael Ströder wrote:
> Yves Dorfsman wrote:
>> Is there a simple example for dsml.DSMLParser() somewhere ?
> 
> No, this module is rather unmaintained.
> 
> IIRC it mainly works like module ldif: You should sub-class
> dsml.DSMLParser implementing a custom method .handle(). Note that it
> only supports DMSLv1 which is not what you want today.

I did subclass it, the Writer works (I manage to convert from ldfi to dsml), 
but I never get to use the handler method, because it fails when I try to 
parse().

> 
>> I have tried:
>> x = dsml.DSMLParser(input_file, dsml.DSMLv1Handler)
>>
>> But eventually it fails with an HTTP 404 error...
> 
> ???

Yes I was confused too. The documentation does not indicate what the 
ContentHandler should be... is dsml.DSMLv1Handler the right thing to put there ?


   File "./ieLDAP.py", line 106, in main
     parser.parse()
   File "/usr/lib/python2.5/site-packages/dsml.py", line 300, in parse
     self._parser.parse(self._input_file)
   File "/usr/lib/python2.5/site-packages/_xmlplus/sax/expatreader.py", line 
109, in parse
     xmlreader.IncrementalParser.parse(self, source)
   File "/usr/lib/python2.5/site-packages/_xmlplus/sax/xmlreader.py", line 
123, in parse
     self.feed(buffer)
   File "/usr/lib/python2.5/site-packages/_xmlplus/sax/expatreader.py", line 
216, in feed
     self._parser.Parse(data, isFinal)
   File "/usr/lib/python2.5/site-packages/_xmlplus/sax/expatreader.py", line 
395, in external_entity_ref
     "")
   File "/usr/lib/python2.5/site-packages/_xmlplus/sax/saxutils.py", line 
524, in prepare_input_source
     f = urllib2.urlopen(source.getSystemId())
   File "/usr/lib/python2.5/urllib2.py", line 124, in urlopen
     return _opener.open(url, data)
   File "/usr/lib/python2.5/urllib2.py", line 387, in open
     response = meth(req, response)
   File "/usr/lib/python2.5/urllib2.py", line 498, in http_response
     'http', request, response, code, msg, hdrs)
   File "/usr/lib/python2.5/urllib2.py", line 425, in error
     return self._call_chain(*args)
   File "/usr/lib/python2.5/urllib2.py", line 360, in _call_chain
     result = func(*args)
   File "/usr/lib/python2.5/urllib2.py", line 506, in http_error_default
     raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
urllib2.HTTPError: HTTP Error 404: Not Found



-- 
Yves.
http://www.sollers.ca/blog

Re: DSMLParser example

[Michael S. <mi...@st...>]

Yves Dorfsman wrote:
> Michael Ströder wrote:
>> Yves Dorfsman wrote:
>>> But eventually it fails with an HTTP 404 error...
>> ???
> 
> Yes I was confused too.
> [..]
>    File "/usr/lib/python2.5/urllib2.py", line 506, in http_error_default
>      raise HTTPError(req.get_full_url(), code, msg, hdrs, fp)
> urllib2.HTTPError: HTTP Error 404: Not Found

Maybe the underlying modules try to download a DTD via HTTP for DSMLv1
which is no longer available at the OASIS site? Frankly I'd recommend
not to bother with DSMLv1 since OASIS does not support it anymore.

Ciao, Michael.

Re: DSMLParser example

[Yves D. <yv...@zi...>]

Michael: Can you confirm this is the way it was supposed to be used, I mean, 
is this class the sort of argument that should be used for ContentHandler ?

> Yves Dorfsman wrote:
> 
>> I have tried:
>> x = dsml.DSMLParser(input_file, dsml.DSMLv1Handler)

I have noted your observation about dsml v1, and will look at the new 
version, and see how far I get into implementing that.



-- 
Yves.

Re: DSMLParser example

[Michael S. <mi...@st...>]

Yves Dorfsman wrote:
> Michael: Can you confirm this is the way it was supposed to be used, I mean, 
> is this class the sort of argument that should be used for ContentHandler ?
> 
>> Yves Dorfsman wrote:
>>
>>> I have tried:
>>> x = dsml.DSMLParser(input_file, dsml.DSMLv1Handler)
> 
> I have noted your observation about dsml v1, and will look at the new 
> version, and see how far I get into implementing that.

AFAIK DSMLv2 is not a simple data format anymore. The point is that you
have to implement hooks for the LDAP operations. Similar problem with
the yet unimplemented support for change records in LDIF. The concept
should be the same. There are patches by Roland pending to be examined
for the LDIF module.

Ciao, Michael.