'XsdComplexType' object has no attribute 'min_length'

[ikomef]

Hello.
I was trying to import the French db on phyto products (https://www.data.gouv.fr/fr/datasets/donnees-ouvertes-du-catalogue-e-phy-des-produits-phytopharmaceutiques-matieres-fertilisantes-et-supports-de-culture-adjuvants-produits-mixtes-et-melanges/)
But got this error. They use quite complex schemas with type inheritance and extensions, but seems the app crashed on the very beginning of parsing.
Here is the crash

File "/tmp/venv/lib/python3.13/site-packages/xml2db/model.py", line 136, in init
self._build_model()
~~~~~~~~~~~~~~~~~^^
File "/tmp/venv/lib/python3.13/site-packages/xml2db/model.py", line 228, in _build_model
root_table = self._parse_tree(
self.xml_schema[0] if len(self.xml_schema) == 1 else self.xml_schema
)
File "/tmp/venv/lib/python3.13/site-packages/xml2db/model.py", line 517, in _parse_tree
child_table = self._parse_tree(child, nodes_path)
File "/tmp/venv/lib/python3.13/site-packages/xml2db/model.py", line 517, in _parse_tree
child_table = self._parse_tree(child, nodes_path)
File "/tmp/venv/lib/python3.13/site-packages/xml2db/model.py", line 517, in _parse_tree
child_table = self._parse_tree(child, nodes_path)
[Previous line repeated 3 more times]
File "/tmp/venv/lib/python3.13/site-packages/xml2db/model.py", line 553, in _parse_tree
) = recurse_parse_simple_type([parent_node.type.base_type])
~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/tmp/venv/lib/python3.13/site-packages/xml2db/model.py", line 406, in recurse_parse_simple_type
elem_type.min_length,
^^^^^^^^^^^^^^^^^^^^
AttributeError: 'XsdComplexType' object has no attribute 'min_length'

And here is the first xsd

> <?xml version="1.0" encoding="UTF-8"?>
> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xml:lang="fr">
> 	<!-- 
> 		Schéma relatif aux données de décision d'AMM pour les intrants.
> 		fichier "reponse"
> 	 -->
> 	<xs:include schemaLocation="intrant.xsd" />
> 	<!-- Elément root :
> 		en cas de flux "intrant" :
> 		  - intrants : liste des produits soumis à décision.
> 		  - contexte : méta données sur le fichier
> 	 -->
> 	<xs:element name="reponse">
> 		<xs:complexType>
> 			<xs:sequence>
> 				<xs:element name="intrants" type="intrants" minOccurs="0" />
> 			</xs:sequence>
> 		</xs:complexType>
> 	</xs:element>
> </xs:schema>

[clohl]

Have the same issue - immediately bombs out of the application because min_length is not defined on the xsd:complexType

[martinv13]

Hi,

Thanks for reporting this.

#32 should solve the issue.

However, your schema has very long names, and then won't work with postgresql or duckdb with the 63 characters limit (ongoing issue here: #25).

@ikomef, would it help to merge #32 first (meaning, do you have another database backend at hand which can cope with these long names)? Solving #25 is more challenging and requires quite a lot of changes.

@clohl, could you post the XSD schema that raises this issue? It could be the same root cause but we cannot be sure without your schema.

[clohl]

@martinv13 here's a gist for one of the failing schemas I can share temporarily:
https://gist.github.com/clohl/45568d13c4619c1904fb36be7de13835

[ivanfeanor]

@martinv13 yes, it works, checked with sqlite, thanks!

[martinv13]

Thanks @ivanfeanor and @clohl!

I added a test and released this.

Also, @clohl, I was not able to reproduce the error with the XSD you provided, which seems to work fine with 0.12.4. I hope this change will solve your issue too; if it is not the case please feel free to re-open or create a new issue.