[OWSLib-devel] how to restrict csw query to service only

[Jachym Cepicky]

Hi,
I'm really new to the csw topic, so please be patient with me. Also, as far
as I understand, INSPIRE discovery service is not specified well in some
points, which can lead to bad result's I might get from the server I'm
trying to work with.

The server is national INSPIRE catalogue of Czech republic running at
http://geoportal.gov.cz/php/micka/csw/index.php

>From OWSLib/csw documentation it's quite clear, how to use "AnyText" and
"BoundingBox" restriction.

Questions:

1. It is not quite clear to me, how to restrict query to particular record
type ("Data" or "Service"), how to specify ServiceType ('WMS' or 'view')?

2. When I try to restrict the query to particular organisation, seems that
OWSLib is not counting with special characters ?

>>> aopk_query = PropertyIsEqualTo('csw:MetadataContact', 'Agentura ochrany
přírody a krajiny České republiky')
>>> cenia.getrecords2([aopk_query])

I get following error:

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/local/lib/python2.7/dist-packages/owslib/csw.py", line 341, in
getrecords2
    node2.append(flt.setConstraintList(constraints))
  File "/usr/local/lib/python2.7/dist-packages/owslib/fes.py", line 143, in
setConstraintList
    return self.setConstraint(constraints[0])
  File "/usr/local/lib/python2.7/dist-packages/owslib/fes.py", line 117, in
setConstraint
    self._root.append(constraint.toXML())
  File "/usr/local/lib/python2.7/dist-packages/owslib/fes.py", line 264, in
toXML
    etree.SubElement(node0, util.nspath_eval('ogc:Literal',
namespaces)).text = self.literal
  File "lxml.etree.pyx", line 953, in lxml.etree._Element.text.__set__
(src/lxml/lxml.etree.c:45142)
  File "apihelpers.pxi", line 684, in lxml.etree._setNodeText
(src/lxml/lxml.etree.c:20505)
  File "apihelpers.pxi", line 1393, in lxml.etree._utf8
(src/lxml/lxml.etree.c:26656)
ValueError: All strings must be XML compatible: Unicode or ASCII, no NULL
bytes or control characters

Any hints?

Thank you

Jachym
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