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vs2003 & xsd:extension

man-in-nature
10/28/2004 11:15:06 AM

dotnet xml: Hello,

I have already read several existing posts about xsd:extension, but do not
find something useful to my test case. I have one xml file and one xsd file.
I can use a simple command line (C#) program to validate the xml file against
the xsd file without any error. The problem is that when I validate the same
xml file within VisualStudio 2003, I got five errors, which are all related
to xsd:extension. It seems that those "problem" attributes and elements are
not inherited in the derived type. Here is one of the famous error:

Could not find any attribute 'routingNum' of element 'hat'.

Any input is appreciated much. Thanks.

The following are the xml file and the xsd:


<c:items xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://chapter14.xsd
http://localhost/xsd/chapter14.xsd"
xmlns:c="http://chapter14.xsd">
<hat routingNum="123456" effDate="2002-04-02" lang="en-US">
<number>557</number>
<name>Ten-Gallon Hat</name>
<description>This is a great hat!</description>
</hat>
<umbrella routingNum="123" effDate="2002-04-02">
<number>557</number>
<name>Ten-Gallon Hat</name>
</umbrella>
<shirt routingNum="124" effDate="2002-04-02" sleeve="17">
<number>557</number>
<name>Short-Sleeved Linen Blouse</name>
<color value="blue"/>
<size system="US-DRESS">6</size>
</shirt>
</c:items>

---------------------------------------------------

<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://chapter14.xsd"
xmlns="http://chapter14.xsd">

<xsd:annotation>
<xsd:documentation>
This example illustrates complex types that are derived from other
specified types.
</xsd:documentation>
</xsd:annotation>

<xsd:element name="items" type="ItemsType"/>

<xsd:complexType name="ItemsType">
<xsd:choice minOccurs="0" maxOccurs="unbounded">
<xsd:element name="hat" type="ProductType"/>
<xsd:element name="umbrella" type="RestrictedProductType"/>
<xsd:element name="shirt" type="ShirtType"/>
</xsd:choice>
</xsd:complexType>


<xsd:complexType name="ItemType" abstract="true">
<xsd:attribute name="routingNum" type="xsd:integer"/>
</xsd:complexType>


<xsd:complexType name="ProductType">
<xsd:complexContent>
<xsd:extension base="ItemType">
<xsd:sequence>
<xsd:element name="number" type="xsd:integer"/>
<xsd:element name="name" type="xsd:string"/>
<xsd:element name="description" type="xsd:string" minOccurs="0"/>
</xsd:sequence>
<xsd:attribute name="effDate" type="xsd:date"/>
<xsd:attribute name="lang" type="xsd:language"/>
</xsd:extension>
</xsd:complexContent>
</xsd:complexType>


<xsd:complexType name="RestrictedProductType">
<xsd:complexContent>
<xsd:restriction base="ProductType">
<xsd:sequence>
<xsd:element name="number" type="xsd:integer"/>
<xsd:element name="name" type="xsd:token"/>
</xsd:sequence>
<xsd:attribute name="routingNum" type="xsd:short" use="required"/>
<xsd:attribute name="effDate" type="xsd:date" default="1900-01-01"/>
<xsd:attribute name="lang" use="prohibited"/>
</xsd:restriction>
</xsd:complexContent>
</xsd:complexType>


<xsd:complexType name="ShirtType">
<xsd:complexContent>
<xsd:extension base="RestrictedProductType">
<xsd:choice maxOccurs="unbounded">
<xsd:element name="size" type="SmallSizeType"/>
<xsd:element name="color" type="ColorType"/>
</xsd:choice>
<xsd:attribute name="sleeve" type="xsd:integer"/>
</xsd:extension>
</xsd:complexContent>
</xsd:complexType>


<xsd:complexType name="SizeType">
<xsd:simpleContent>
<xsd:extension base="xsd:integer">
<xsd:attribute name="system" type="xsd:token"/>
</xsd:extension>
</xsd:simpleContent>
</xsd:complexType>


<xsd:complexType name="SmallSizeType">
<xsd:simpleContent>
<xsd:restriction base="SizeType">
<xsd:minInclusive value="2"/>
<xsd:maxInclusive value="6"/>
<xsd:attribute name="system" type="xsd:token"
use="required"/>
</xsd:restriction>
</xsd:simpleContent>
</xsd:complexType>

<xsd:complexType name="ColorType">
<xsd:attribute name="value" type="xsd:string"/>
</xsd:complexType>

</xsd:schema>

Re: vs2003 & xsd:extension

Zafar Abbas [MSFT]
10/29/2004 7:54:35 AM

Your xml and xsd validate fine with the validation engine in VS 2003. Are
you putting your schema file in the right location?

[quoted text, click to view]

Re: vs2003 & xsd:extension

man-in-nature
10/29/2004 8:44:01 AM

Yes, VS2003 can find the schema in question. It never complains that "Visual
Studio could not locate a schema for this document...". It is easy to verify
this by changing the target name space in the instance document
("xmlns:c="http://chanpter14.xsd") to something else.

Regards

[quoted text, click to view]

Re: vs2003 & xsd:extension

Mike Jansen
10/29/2004 11:27:23 AM

I'm having the same problem with attributes from base types showing up
properly in the derived type in VS.NET 2003. VS understands the rest of the
schema, so it's finding the schema. It just doesn't seem to recognize
attributes from the base type of an xs:extension'ed type.

[quoted text, click to view]

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