.XSD (schema) Validation issue

[jeyroz]

Has anyone had any experience validating XSD (schema) files with XML::Validator::Schema? I can't seem to rid myself of an error when the mod parses the .xsd file.

Error is:
"Found <simpleType> illegally combined with <complexType>."

The .xsd file parses and validates fine under XMLSpy (Windows). I, unfortunately, can't alter the .xsd file as it was provided by a 3 party and serves as a template for their system requirements.

Below is the (simplified) code:

use XML::SAX::ExpatXS;
use XML::Validator::Schema;

my $xml_path = '/path/to/xml/document.xml';
my $xsd_path = '/path/to/schema/document.xsd';

my $xml_va = XML::Validator::Schema->new(file => $xsd_path);
my $parser = XML::SAX::ExpatXS->new(Handler => $xml_va);
eval { $parser->parse_uri($xml_path) };
die "File failed validation: $@" if $@;

exit;

Also, I can't seem to find alternate schema validation tools on CPAN. The schema tools I run into are used to create the .xsd which isn't an option currently.

Any help is appreciated.

[samtregar]

Have you read the documentation? In particular pay attention to the schema support section. It's likely that you're trying to do something that isn't supported yet by XML::Validator::Schema.

If you've read the docs and you're reasonably sure that you're painting within the lines then please post the XSD file. If it's huge try to find a smallish snippet that reproduces the problem.

-sam

[jeyroz]

Sam,

Thanks for posting!
Yes, I made sure to read the documentation very closely but it didn't seem to shed any light on this particular error - other than "SimpleTypes must come after their base types in the schema body."

I searched through the module source and found where the error was being generated:

_err("Found <simpleType> illegally combined with complexType>.") if $mother->{is_complex};

By "illegally combined" does the error mean simpleType cannot be a child (or parent) of complexType?

I hope the following .xsd snippet will be helpful as it seem s exemplary of the file as a whole.

SAMPLE XSD MARKUP

<xsd:element name="Phone" type="PhoneType" minOccurs="0"/>
<xsd:element name="Fax" minOccurs="0">
 <xsd:complexType>
  <xsd:sequence>
   <xsd:element name="F_AreaCode" nillable="1">
    <xsd:simpleType>
     <xsd:restriction base="xsd:string">
      <xsd:length value="3"/>
     </xsd:restriction>
    </xsd:simpleType>
   </xsd:element>
   <xsd:element name="F_Prefix" nillable="1">
    <xsd:simpleType>
     <xsd:restriction base="xsd:string">
      <xsd:length value="3"/>
      </xsd:restriction>
     </xsd:simpleType>
    </xsd:element>
    <xsd:element name="F_Suffix" nillable="1">
     <xsd:simpleType>
      <xsd:restriction base="xsd:string">
       <xsd:length value="4"/>
       </xsd:restriction>
      </xsd:simpleType>
     </xsd:element>
    </xsd:sequence>
   </xsd:complexType>
  </xsd:element>

END SAMPLE XSD

Any help is appreciated.

j

[samtregar]

Yes, I made sure to read the documentation very closely but it didn't seem to shed any light on this particular error

I wouldn't expect that it would. XML::Validator::Schema has terrible failure behavior. If it's trying to process a schema which is doing things it can't support it won't generally give you much help figuring out why.

I hope the following .xsd snippet will be helpful

Not particularly... I don't see any place in that snippet where a simpleType is the (direct) child of a complexType. Are you sure you've found the problem?

Here's what I need if I'm going to find and fix this bug:

• A small, complete XSD file containing the problematic construct. No more than 20 lines would be ideal.
• A small XML file which you posit should validate against the sample XSD. Again, smaller is better.

In some cases I can create these myself but you haven't given me enough information to do the job.

Thanks,
-sam