Hello everybody,
I've got a problem with Xerces when validating an XML file. Ths problem comes from the XML Schema itself,
although designed without any problem with XML Spy 5.
The erroneous part is the following :
------------------------------------------------- Generator.xsd file -------------------------------------------------
<xs:complexType name="Field_Type">
<xs:sequence>
<xs:element name="GenericProcess" type="Process_Type" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
<xs:attribute name="FieldType" type="xs:string" use="optional"/>
<xs:attribute name="DefaultValue" type="xs:string" use="optional"/>
<xs:attribute name="NbOfOccurence" type="xs:nonNegativeInteger" use="optional"/>
</xs:complexType>
<xs:complexType name="Process_Type">
<xs:attribute name="StepName" type="xs:string" use="required"/>
<xs:attribute name="Function" type="xs:string" use="required"/>
</xs:complexType>
<xs:complexType name="TextTableReference">
<xs:complexContent>
<xs:restriction base="Field_Type">
<xs:sequence>
<xs:element name="GenericProcess" type="Process_Type" minOccurs="0"
maxOccurs="unbounded"/>
</xs:sequence>
<xs:attribute name="DefaultValue" fixed="996"/>
</xs:restriction>
</xs:complexContent>
</xs:complexType>--------------------------------------------------
Xerces gives me :
[Error] Generator.xsd:183:18: derivation-ok-restriction.2.1.2: Error for type 'TextTableReference'. An
attribute use in this type has a type which is not validly derived from the type of the matching attribute
use in the base type.
---->I have this error because of the fixed="996", and even because of the xs:attribute presence under
restriction as far as I understand.
[Error] Generator.xsd:180:44: cos-particle-restrict.2: Forbidden particle restriction:
'any:choice,sequence,all,elt'.
[Error] Generator.xsd:180:44: derivation-ok-restriction.5.3.2: Error for type 'TextTableReference'. The
particle of the type is not a valid restriction of the particle of the base.
----->These two extra errors may me due to the fact that Field_Type has a child element (Generic Process),
because if I change Field_Type and remove GenericProcess child element, I only have the first error adn not
the three ones.
I must admit that I don't find really clear the explanations provided by the w3c here
http://www.w3.org/TR/xmlschema-1/
Object Oreiented speaking I want to derive TextTableReference from Field_Type and fixing teh attribute
DefauktValue.
Do you have any solution for my problem, apart from coding TextTableReference as a standalone type with its
attributes and child, because I have many types derived in the same way as TextTableReference from
Field_Type.
Thanks in advance for your help.
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