Hi John,
I tried your files against Xerces 1.4.3, but got no error. So upgrading to
the new version might solve your problem. (Lots of bugs were fixed in 1.4.2
and 1.4.3.)
Cheers,
Sandy Gao
Software Developer, IBM Canada
(1-416) 448-3255
[EMAIL PROTECTED]
"John Powell"
<[EMAIL PROTECTED] To: <[EMAIL PROTECTED]>
ra.com> cc:
Subject: Xerces Validator -
multiple schemas using xsi:type
08/29/2001
09:07 AM
Please respond
to
xerces-j-user
Dear XERCES-J mailing list,
The following XML Instance file uses a derived type to extend a base type
which are defined in separate schemas. The XSV validator and XML spy are OK
with this syntax, but the Xerces 1_4_1 parser/validator gives me the
following error:
"[Error] instance.xml:4:43: General Schema Error: Type :
http://www.ara.com/ext,derivedModelType does not derive from the type of
element null."
Is this a known problem with the XERCES validator or are the other
validators letting something through that they shouldn't?
Is there a way to specify the same schemas or instance that works with all
validators?
INSTANCE.XML
<?xml version="1.0" encoding="UTF-8"?>
<model xmlns="http://www.ara.com/base"; xmlns:ext="http://www.ara.com/ext";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:schemaLocation="http://www.ara.com/ext ext.xsd ">
<generic xsi:type="ext:derivedModelType">
<base_info>base information</base_info>
<ext:ext_info>extra info for derived
type</ext:ext_info>
</generic>
</model>
BASE.XSD
<?xml version="1.0"?>
<xsd:schema targetNamespace="http://www.ara.com/base";
xmlns:xsd="http://www.w3.org/2001/XMLSchema";
xmlns:bas="http://www.ara.com/base"; elementFormDefault="qualified">
<xsd:element name="model">
<xsd:complexType>
<xsd:sequence>
<xsd:element name="generic" type
="bas:MyBaseType"/>
</xsd:sequence>
</xsd:complexType>
</xsd:element>
<xsd:complexType name="MyBaseType">
<xsd:sequence>
<xsd:element name="base_info" type
="xsd:string"/>
</xsd:sequence>
</xsd:complexType>
</xsd:schema>
EXT.XSD
<?xml version="1.0"?>
<xsd:schema targetNamespace="http://www.ara.com/ext";
xmlns:ext="http://www.ara.com/ext";
xmlns:xsd="http://www.w3.org/2001/XMLSchema";
xmlns:bas="http://www.ara.com/base"; xmlns="http://www.ara.com/ext";
elementFormDefault="qualified" attributeFormDefault="unqualified">
<xsd:import namespace="http://www.ara.com/base"; schemaLocation
="BASE.xsd"/>
<xsd:complexType name="derivedModelType">
<xsd:annotation>
<xsd:documentation>derives from an element
of type from BASE
</xsd:documentation>
</xsd:annotation>
<xsd:complexContent>
<xsd:extension base="bas:MyBaseType">
<xsd:sequence>
<xsd:element name
="ext_info" type="xsd:string"/>
</xsd:sequence>
</xsd:extension>
</xsd:complexContent>
</xsd:complexType>
</xsd:schema>
John Powell
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