problem when xml has empty values and xsd has asserts checking on theses values on xmlschema11

[ugzas]

how to reproduce: xml has empty prtctn_prvdr_instttnl_sctr:

<data>
    <row>
      <entty_cntry>SE</entty_cntry>
      <typ_accntng_itm>45</typ_accntng_itm>
      <typ_instrmnt>1</typ_instrmnt>
      <crrncy_dnmntn>GBP</crrncy_dnmntn>
      <rsdl_mtrty>20</rsdl_mtrty>
      <cntrprty_instttnl_sctr>S541</cntrprty_instttnl_sctr>
      <cntrprty_cntry>DKK</cntrprty_cntry>
      <accrd_intrst>0</accrd_intrst>
      <prtctn_prvdr_instttnl_sctr></prtctn_prvdr_instttnl_sctr>
      <prtctn_prvdr_cntry>value</prtctn_prvdr_cntry>
      <prtctn_allctd_vl_prdntl_prps>0</prtctn_allctd_vl_prdntl_prps>
    </row>
  </data>

xsd has such asserts

<xs:assert test="if (rb:prtctn_allctd_vl_prdntl_prps != '') then (rb:prtctn_prvdr_instttnl_sctr != '') else true()"/> <!-- CBS_CT_16 -->
<xs:assert test="if (rb:prtctn_prvdr_instttnl_sctr != '') then (rb:prtctn_allctd_vl_prdntl_prps != '') else true()"/> <!-- CBS_CT_16 -->
<xs:assert test="if (rb:prtctn_prvdr_cntry = rb:cntrprty_cntry) then (rb:prtctn_prvdr_instttnl_sctr != rb:cntrprty_instttnl_sctr) else true()"/>

and with such code i cannot go in loop through these errors

import xmlschema

add_error = []
with open('iris_cbs.xml', encoding='utf-8') as xml_file:
    xml_string = xml_file.read()
    schema = xmlschema.XMLSchema11('cbs.xsd', validation="lax")
    validation_error_iterator = schema.iter_errors(xml_string)
    print(enumerate(validation_error_iterator))

    for idx, validation_error in enumerate(validation_error_iterator, start=1):
        add_error = f'Error on: {validation_error}'
        if idx >= 100:
            print(f'Reached XML error count limit: [{idx}] items')
            add_error(f'Reached XML error count limit: [{idx}] items')
            break
        print(add_error)**

getting error
AttributeError: 'NoneType' object has no attribute 'strip'

[ugzas]

full errror:

File "C:\Users\s2803f\AppData\Local\Programs\Python\Python311\Lib\site-packages\xmlschema\validators\schemas.py", line 1812, in iter_errors
for result in xsd_element.iter_decode(elem, **kwargs):
File "C:\Users\s2803f\AppData\Local\Programs\Python\Python311\Lib\site-packages\xmlschema\validators\elements.py", line 752, in iter_decode
for result in content_decoder.iter_decode(obj, validation, **kwargs):
File "C:\Users\s2803f\AppData\Local\Programs\Python\Python311\Lib\site-packages\xmlschema\validators\groups.py", line 1022, in iter_decode
for result in xsd_element.iter_decode(child, validation, **kwargs):
File "C:\Users\s2803f\AppData\Local\Programs\Python\Python311\Lib\site-packages\xmlschema\validators\elements.py", line 752, in iter_decode
for result in content_decoder.iter_decode(obj, validation, **kwargs):
File "C:\Users\s2803f\AppData\Local\Programs\Python\Python311\Lib\site-packages\xmlschema\validators\groups.py", line 1022, in iter_decode
for result in xsd_element.iter_decode(child, validation, **kwargs):
File "C:\Users\s2803f\AppData\Local\Programs\Python\Python311\Lib\site-packages\xmlschema\validators\elements.py", line 749, in iter_decode
for error in assertion(obj, **kwargs):
File "C:\Users\s2803f\AppData\Local\Programs\Python\Python311\Lib\site-packages\xmlschema\validators\assertions.py", line 144, in call
if not self.token.evaluate(context):
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\s2803f\AppData\Local\Programs\Python\Python311\Lib\site-packages\elementpath\xpath2_xpath2_operators.py", line 140, in evaluate_if_expression
return self[1].evaluate(context)
^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\s2803f\AppData\Local\Programs\Python\Python311\Lib\site-packages\elementpath\xpath2_xpath2_operators.py", line 484, in evaluate_parenthesized_expression
return self[0].evaluate(context) if self else []
^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\s2803f\AppData\Local\Programs\Python\Python311\Lib\site-packages\elementpath\xpath1_xpath1_operators.py", line 482, in evaluate_comparison_operators
return any(op(x1, x2) for x1, x2 in self.iter_comparison_data(context))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\s2803f\AppData\Local\Programs\Python\Python311\Lib\site-packages\elementpath\xpath1_xpath1_operators.py", line 482, in
return any(op(x1, x2) for x1, x2 in self.iter_comparison_data(context))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\s2803f\AppData\Local\Programs\Python\Python311\Lib\site-packages\elementpath\xpath_tokens.py", line 523, in iter_comparison_data
for values in product(left_values, right_values):
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\s2803f\AppData\Local\Programs\Python\Python311\Lib\site-packages\elementpath\xpath_tokens.py", line 421, in atomization
value = item.typed_value
^^^^^^^^^^^^^^^^
File "C:\Users\s2803f\AppData\Local\Programs\Python\Python311\Lib\site-packages\elementpath\xpath_nodes.py", line 543, in typed_value
value = self.xsd_type.decode(self.elem.text)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\s2803f\AppData\Local\Programs\Python\Python311\Lib\site-packages\xmlschema\validators\xsdbase.py", line 968, in decode
for result in self.iter_decode(obj, validation, **kwargs): # pragma: no cover
File "C:\Users\s2803f\AppData\Local\Programs\Python\Python311\Lib\site-packages\xmlschema\validators\simple_types.py", line 1106, in iter_decode
if ' ' not in obj.strip():
^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'strip'

[brunato]

Hi,
could you provide the 'cbs.xsd' schema (or a link to it)?

Thank you

[ugzas]

adding link https://www.riksbank.se/en-gb/statistics/reporting-of-international-bank-statistics-iris/for-reporting-agents/

[brunato]

Hi, the releases v2.4.0 of xmlschema and v4.1.5 of elementpath should fix this problem.