query regarding xs:key & key ref

shyam · Jun 16, 2006

Hi All

As per my understanding we use xs:key when we want to have a unique
value for a element or attribute and keyref to refer to one of the
unique values of that element or attribute.

However I am not sure if this uniqueness is checked when we validate a
document using XMLSpy

Here is the protion of myschema

==================================================================
<xs:element name="PROTOHEADERENTRY">
<xs:complexType>
<xs:sequence>
<xs:element name="ABNFGRAMMER">
<xs:complexType>
<xs:sequence>
<xs:element name="ABNFRULESET">
<xs:simpleType>
<xs:list>
<xs:simpleType>
<xs:restriction base="xs:token">
<xs

attern value="\p{IsBasicLatin}*"/>
</xs:restriction>
</xs:simpleType>
</xs:list>
</xs:simpleType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
<xs:attribute name="NAME" type="xs:token"/>
<xs:attribute name="HEADERSEQNUM" type="xs

ositiveInteger"/>
</xs:complexType>
</xs:element>
=================================================================

now at the root element , which is above PROTOHEADERENTRY, i do this
================================================================
<xs:key name="KEYHEADERNUM">
<xs:selector xpath="./PROTOHEADERENTRY"/>
<xs:field xpath="HEADERSEQNUM"/>
</xs:key>

Now when I write a xml file and validate against this schema it gets
validated even if I use same HEADERSEQNUM value for multiple
PROTOHEADERENTRY elements

I am using XMLSpy

I think I am missing some trick here

PLease Help

Regards
Shyam

Martin Honnen · Jun 16, 2006

shyam wrote:

<xs:attribute name="HEADERSEQNUM" type="xsositiveInteger"/>

<xs:selector xpath="./PROTOHEADERENTRY"/>
<xs:field xpath="HEADERSEQNUM"/>

XPath to select an attribute is @attributeName so you probably want
<xs:field xpath="@HEADERSEQNUM"/>

shyam · Jun 16, 2006

Martin said:
shyam wrote:

XPath to select an attribute is @attributeName so you probably want
<xs:field xpath="@HEADERSEQNUM"/>

Even with this its dosent work

Stan Kitsis [MSFT] · Jun 16, 2006

You need to declare a target namespace in your schema and use it in the
xpath. In the example below I used myTNS as the prefix for your target
namespace.

<xs:schema ... targetNamespace="myTargetNamespace"
xmlns:myTNS="myTargetNamespace" xmlns="myTargetNamespace"...>

.....

<xs:selector xpath="./myTNS

ROTOHEADERENTRY"/>
<xs:field xpath="@HEADERSEQNUM"/>

....

--
Stan Kitsis
Program Manager, XML Technologies
Microsoft Corporation

This posting is provided "AS IS" with no warranties, and confers no rights.
Use of included script samples are subject to the terms specified at
http://www.microsoft.com/info/cpyright.htm

shyam said:
Martin said:

shyam wrote:

XPath to select an attribute is @attributeName so you probably want
<xs:field xpath="@HEADERSEQNUM"/>

Click to expand...

Even with this its dosent work

shyam · Jun 17, 2006

Stan said:
You need to declare a target namespace in your schema and use it in the
xpath. In the example below I used myTNS as the prefix for your target
namespace.

<xs:schema ... targetNamespace="myTargetNamespace"
xmlns:myTNS="myTargetNamespace" xmlns="myTargetNamespace"...>

....

<xs:selector xpath="./myTNSROTOHEADERENTRY"/>
<xs:field xpath="@HEADERSEQNUM"/>

Thanks Stan This has worked ,
however the keyref thing is still not working
I have defined a keyref
<xs:keyref name="KEYENTRYNUM" refer="myTNS:KEYHEADERNUM">
<xs:selector xpath="./myTNS

ROTOHEADER"/>
<xs:field xpath="@ENTRYSEQNUM"/>
</xs:keyref>

which refers to the earlier xs:key

So i want is that the ENTRYSEQNUM attribute of PROTOHEADER element
should refer to a unique and existing HEADERSEQNUM attribute of
myTNS

ROTOHEADERENTRY element

I guess I am again missing some minor trick and would graetly
appretiate if you could help out

Thanks
Shyam

...

--
Stan Kitsis
Program Manager, XML Technologies
Microsoft Corporation

This posting is provided "AS IS" with no warranties, and confers no rights.
Use of included script samples are subject to the terms specified at
http://www.microsoft.com/info/cpyright.htm

Stan Kitsis [MSFT] · Jun 19, 2006

Shyam,

Can you post your schema?

--
Stan Kitsis
Program Manager, XML Technologies
Microsoft Corporation

This posting is provided "AS IS" with no warranties, and confers no rights.
Use of included script samples are subject to the terms specified at
http://www.microsoft.com/info/cpyright.htm

shyam · Jun 20, 2006

Stan said:
Shyam,

Can you post your schema?

==============================================================
<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns="http://www.w3schools.com" xmlns:myTNS="MYTARGET"
targetNamespace="MYTARGET" elementFormDefault="qualified">
<xs:element name="PROTOHEADERENTRY">
<xs:complexType>
<xs:sequence>
<xs:element name="ABNFGRAMMER">
<xs:complexType>
<xs:sequence>
<xs:element name="ABNFRULESET">
<xs:simpleType>
<xs:list>
<xs:simpleType>
<xs:restriction base="xs:token">
<xs

attern value="\p{IsBasicLatin}*"/>
</xs:restriction>
</xs:simpleType>
</xs:list>
</xs:simpleType>
</xs:element>
<xs:element name="ABNFEXCEPTION" maxOccurs="unbounded">
<xs:complexType>
<xs:attribute name="RULENAME" type="xs:token"/>
<xs:attribute name="EXCEPTION">
<xs:simpleType>
<xs:restriction base="xs:token">
<xs:enumeration value="MANDATORY"/>
<xs:enumeration value="IGNORESEQ"/>
<xs:enumeration value="IGNORECASE"/>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
</xs:complexType>
</xs:element>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:sequence>
<xs:attribute name="NAME" type="xs:token"/>
<xs:attribute name="HEADERSEQNUM" type="xs

ositiveInteger"/>
</xs:complexType>
</xs:element>
<xs:element name="ABNFBASIC">
<xs:complexType>
<xs:sequence>
<xs:element name="RULESTRING" type="xs:string"/>
</xs:sequence>
<xs:attribute name="ABNFBASICNAME" type="xs:NMTOKEN"/>
</xs:complexType>
</xs:element>
<xs:element name="ABNFRULE">
<xs:complexType>
<xs:sequence>
<xs:element name="RULESTRING">
<xs:simpleType>
<xs:list>
<xs:simpleType>
<xs:restriction base="xs:token">
<xs

attern value="\p{IsBasicLatin}*"/>
</xs:restriction>
</xs:simpleType>
</xs:list>
</xs:simpleType>
</xs:element>
</xs:sequence>
<xs:attribute name="RULENAME" type="xs:NMTOKEN"/>
</xs:complexType>
</xs:element>
<xs:element name="PROTOHEADER">
<xs:complexType>
<xs:attribute name="PROTOHEADERNAME" type="xs:token"/>
<xs:attribute name="ENTRYSEQNUM" type="xs

ositiveInteger"/>
</xs:complexType>
</xs:element>
<xs:element name="PROTODEF">
<xs:complexType>
<xs:sequence>
<xs:element name="PROTOTABLE">
<xs:complexType>
<xs:sequence>
<xs:element ref="myTNS

ROTOHEADER" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element ref="myTNS

ROTOHEADERENTRY" maxOccurs="unbounded"/>
<xs:element ref="myTNS:ABNFRULE" maxOccurs="unbounded"/>
<xs:element ref="myTNS:ABNFBASIC" maxOccurs="unbounded"/>
</xs:sequence>
<xs:attribute name="PROTOCOLNAME" type="xs:token"/>
<xs:attribute name="PROJECTNAME" type="xs:string"/>
</xs:complexType>
<xs:key name="KEYHEADERNUM">
<xs:selector xpath="myTNS

ROTOHEADERENTRY"/>
<xs:field xpath="@HEADERSEQNUM"/>
</xs:key>
<xs:key name="KEYHEADERNAME">
<xs:selector xpath="./myTNS

ROTOHEADERENTRY"/>
<xs:field xpath="@NAME"/>
</xs:key>
<xs:keyref name="KEYENTRYNUM" refer="myTNS:KEYHEADERNUM">
<xs:selector xpath="./myTNS

ROTOHEADER"/>
<xs:field xpath="@ENTRYSEQNUM"/>
</xs:keyref>
</xs:element>
</xs:schema>

===============================================================

shyam · Jun 20, 2006