Validation with XSD using XML::LibXML::Schema, and XML::Validator::Schema

[huntingseasonson]

Both XML::LibXML::Schema and XML::Validator::Schema error when I
attempt to validate, yet the XML and XSD files appear to be perfectly
fine.

XML::LibXML::Schema errors with:
Element '{http://www.w3.org/2001/XMLSchema}element', attribute 'ref':
References from this schema to components in the namespace '' are not
allowed, since not indicated by an import statement.

Code:

my $parser = XML::LibXML->new();
my $doc = $parser->parse_file("TV.xml");
my $v = XML::LibXML::Schema->new(location=>"TV.xsd");
eval { $v->validate($doc); };
die $@ if $@;

+++++++++++++++++++++++++++

XML::Validator::Schema errors with:
Found <simpleType> illegally combined with <complexType>.
at
/usr/lib/perl5/site_perl/5.8.8/i386-linux-thread-multi/XML/LibXML/SAX.pm
line 64
at ./transform.pl line 234

<simpleType> is allowed to be nested withen a <complexType> correct? As
the examples I have seen on the w3c's schema tutorial nest them.
LibXML's error, well I thought a "ref" to a element withen the same
namespace (none) is perfectly ok.

Code:

my $v = XML::Validator::Schema->new(file=>"TV.xsd");
my $p = XML::SAX:arserFactory->parser(handler=>$v);
eval { $p->parse_uri("TV.xml") };
die $@ if $@;

Both fXML and XSD files are quite long, but I will post if necessary.
Im not sure these errors are do to a problem with Perl's
implementation, in javax.xml.validation.Validator they validated ok;
maybe Java's implementation is more relaxed....?

Thanks in advance

 

[Brian McCauley]

Both XML::LibXML::Schema and XML::Validator::Schema error when I
attempt to validate, yet the XML and XSD files appear to be perfectly
fine.

Both fXML and XSD files are quite long, but I will post if necessary.

I can't really see how we can comment if you don't make them available
to us.

If you can't manage to reduce them to a minimal (but complete) test
case then rather than actually posting them it may be better to put
them somewhere public and post a link.

 

[huntingseasonson]

I can't really see how we can comment if you don't make them available
to us.

Ok, the xml: http://huntingseasonson.com/TV.xml

and the xsd: http://huntingseasonson.com/TV.xsd

Thanks

 

[Brian McCauley]

Ok, the xml: http://huntingseasonson.com/TV.xml

and the xsd: http://huntingseasonson.com/TV.xsd

I suspect XML::LibXML::Schema may be getting confused by the explicit
empty namepace declaration.

<xs:schema xmlns="" xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:msdata="urn:schemas-microsoft-com:xml-msdata" id="package">

XML::Validator::Schema only supports a subset of XSD. I can't
immediately see what in your TV.xsd goes beyond what it supports. It
looks like it's mistaking getting confused here...

<xs:complexType>
<xs:simpleContent>
<xs:extension base="xs:string">
<xs:attribute name="type" use="required">
<xs:simpleType>

Looking in XML::Validator::Schema:arser it seems not to consider the
possiblity that <xs:attribute> has content so it sees <xs:simpleType>
as being within the <xs:complexType>. (The <xs:simpleContent> and
<xs:extension> are handled as specialization of the <xs:complexType>).

I guess XML::Validator::Schema:arser only supports named types for
attributes.

 

[skye.shaw]

I suspect XML::LibXML::Schema may be getting confused by the explicit
empty namepace declaration.

<xs:schema xmlns="" xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:msdata="urn:schemas-microsoft-com:xml-msdata" id="package">

Yup that was it.

Thank you very much!

 

[Brian McCauley]

Thank you very much!

Not that this as anything to do with Perl, but it would be interesting
to know if this is a bug in LibXML or if the XSD was at fault. I'm
inclined to believe the former but I wasn't able to convince myself one
way or another from a quick look at www.w3.org.