[oXygen-user] XML Schema & XInclude ?
George Cristian Bina
Fri Jul 20 05:20:13 CDT 2007
Dear Timothy,
Ok, I created a full working sample starting from your schema fragment.
Basically we define a "scopes" element that can contain more "scope"
elements. A "scope" element has mixed content and can contain
"important" elements.
All the sample files are available also in an archive here
http://www.oxygenxml.com/update/xincludeWithSchema.zip
The sample covers both cases, the schema allows also the xi:include
element (in the case when XInclude processing is disabled and this is
needed also for content completion) and the content that replaces the
xi:include (the additional xml:base attribute that appears on the
included elements).
test.xsd:
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
xmlns:xi="http://www.w3.org/2001/XInclude">
<xs:import namespace="http://www.w3.org/2001/XInclude"
schemaLocation="xinclude.xsd"/>
<xs:import namespace="http://www.w3.org/XML/1998/namespace"
schemaLocation="xml.xsd"/>
<xs:element name="scopes">
<xs:complexType>
<xs:sequence maxOccurs="unbounded">
<xs:choice>
<xs:element ref="xi:include" minOccurs="0"/>
<xs:element ref="scope"/>
</xs:choice>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:element name="scope">
<xs:complexType>
<xs:complexContent>
<xs:extension base="scopeType">
<xs:attributeGroup ref="xml:specialAttrs"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
</xs:element>
<xs:complexType name="scopeType" mixed="true">
<xs:choice minOccurs="0">
<xs:element name="important" type="xs:string"/>
</xs:choice>
<xs:attribute name="name" type="xs:string" use="required"/>
</xs:complexType>
</xs:schema>
A sample XML looks like below:
test.xml
<?xml version="1.0" encoding="UTF-8"?>
<scopes xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="test.xsd">
<scope name="test"/>
<include xmlns="http://www.w3.org/2001/XInclude" href="included.xml"/>
<scope name="another scope"/>
</scopes>
included.xml
<?xml version="1.0" encoding="UTF-8"?>
<scope xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:noNamespaceSchemaLocation="test.xsd"
name="inlcudedScope">
This is an <important>included</important> scope.
</scope>
The other schemas are:
xml.xsd
<?xml version='1.0'?>
<xs:schema targetNamespace="http://www.w3.org/XML/1998/namespace"
xmlns:xs="http://www.w3.org/2001/XMLSchema" xml:lang="en">
<xs:annotation>
<xs:documentation>
See http://www.w3.org/XML/1998/namespace.html and
http://www.w3.org/TR/REC-xml for information about this namespace.
This schema document describes the XML namespace, in a form
suitable for import by other schema documents.
Note that local names in this namespace are intended to be defined
only by the World Wide Web Consortium or its subgroups. The
following names are currently defined in this namespace and should
not be used with conflicting semantics by any Working Group,
specification, or document instance:
base (as an attribute name): denotes an attribute whose value
provides a URI to be used as the base for interpreting any
relative URIs in the scope of the element on which it
appears; its value is inherited. This name is reserved
by virtue of its definition in the XML Base specification.
id (as an attribute name): denotes an attribute whose value
should be interpreted as if declared to be of type ID.
The xml:id specification is not yet a W3C Recommendation,
but this attribute is included here to facilitate experimentation
with the mechanisms it proposes. Note that it is _not_ included
in the specialAttrs attribute group.
lang (as an attribute name): denotes an attribute whose value
is a language code for the natural language of the content of
any element; its value is inherited. This name is reserved
by virtue of its definition in the XML specification.
space (as an attribute name): denotes an attribute whose
value is a keyword indicating what whitespace processing
discipline is intended for the content of the element; its
value is inherited. This name is reserved by virtue of its
definition in the XML specification.
Father (in any context at all): denotes Jon Bosak, the chair of
the original XML Working Group. This name is reserved by
the following decision of the W3C XML Plenary and
XML Coordination groups:
In appreciation for his vision, leadership and dedication
the W3C XML Plenary on this 10th day of February, 2000
reserves for Jon Bosak in perpetuity the XML name
xml:Father
</xs:documentation>
</xs:annotation>
<xs:annotation>
<xs:documentation>This schema defines attributes and an attribute group
suitable for use by
schemas wishing to allow xml:base, xml:lang or xml:space attributes
on elements they define.
To enable this, such a schema must import this schema
for the XML namespace, e.g. as follows:
<schema . . .>
. . .
<import namespace="http://www.w3.org/XML/1998/namespace"
schemaLocation="http://www.w3.org/2001/03/xml.xsd"/>
Subsequently, qualified reference to any of the attributes
or the group defined below will have the desired effect, e.g.
<type . . .>
. . .
<attributeGroup ref="xml:specialAttrs"/>
will define a type which will schema-validate an instance
element with any of those attributes</xs:documentation>
</xs:annotation>
<xs:annotation>
<xs:documentation>In keeping with the XML Schema WG's standard versioning
policy, this schema document will persist at
http://www.w3.org/2005/08/xml.xsd.
At the date of issue it can also be found at
http://www.w3.org/2001/xml.xsd.
The schema document at that URI may however change in the future,
in order to remain compatible with the latest version of XML Schema
itself, or with the XML namespace itself. In other words, if the XML
Schema or XML namespaces change, the version of this document at
http://www.w3.org/2001/xml.xsd will change
accordingly; the version at
http://www.w3.org/2005/08/xml.xsd will not change.
</xs:documentation>
</xs:annotation>
<xs:attribute name="lang">
<xs:annotation>
<xs:documentation>This attribute MAY be inserted in documents to
specify the language used in the
contents and attribute values of any element in an XML document.
The values are the ISO 2- and
3-letter codes. An empty string value means the 'un-declaration' of
xml:lang. See RFC 3066 at
http://www.ietf.org/rfc/rfc3066.txt and the IANA registry at
http://www.iana.org/assignments/lang-tag-apps.htm for further
information.</xs:documentation>
</xs:annotation>
<xs:simpleType>
<xs:union memberTypes="xs:language">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:enumeration value=""/>
</xs:restriction>
</xs:simpleType>
</xs:union>
</xs:simpleType>
</xs:attribute>
<xs:attribute name="space">
<xs:annotation>
<xs:documentation>This attribute is attached to an element to signal
an intention that in that
element, white space should be preserved by applications. Possible
values are "default" and
"preserve". </xs:documentation>
</xs:annotation>
<xs:simpleType>
<xs:restriction base="xs:NCName">
<xs:enumeration value="default">
<xs:annotation>
<xs:documentation>Specifies that the whitespaces should not be
preserved.</xs:documentation>
</xs:annotation>
</xs:enumeration>
<xs:enumeration value="preserve">
<xs:annotation>
<xs:documentation>Specifies that the whitespaces should be
preserved.</xs:documentation>
</xs:annotation>
</xs:enumeration>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
<xs:attribute name="base" type="xs:anyURI">
<xs:annotation>
<xs:documentation>The attribute xml:base may be inserted in XML
documents to specify a base URI
other than the base URI of the document or external entity. See
http://www.w3.org/TR/xmlbase/
for information about this attribute.</xs:documentation>
</xs:annotation>
</xs:attribute>
<xs:attribute name="id" type="xs:ID">
<xs:annotation>
<xs:documentation>Defines an ID value without the need of a DTD or
schmea.
See http://www.w3.org/TR/xml-id/ for information about this
attribute.</xs:documentation>
</xs:annotation>
</xs:attribute>
<xs:attributeGroup name="specialAttrs">
<xs:attribute ref="xml:base"/>
<xs:attribute ref="xml:lang"/>
<xs:attribute ref="xml:space"/>
</xs:attributeGroup>
</xs:schema>
xinclude.xsd
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://www.w3.org/2001/XInclude"
xmlns:xi="http://www.w3.org/2001/XInclude"
finalDefault="extension">
<xs:annotation>
<xs:documentation> Not normative, but may be useful. See the REC
http://www.w3.org/TR/XInclude for definitive information about
this namespace. </xs:documentation>
</xs:annotation>
<xs:element name="include" type="xi:includeType"/>
<xs:complexType name="includeType" mixed="true">
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element ref="xi:fallback"/>
<xs:any namespace="##other" processContents="lax"/>
<xs:any namespace="##local" processContents="lax"/>
</xs:choice>
<xs:attribute name="href" use="optional" type="xs:anyURI"/>
<xs:attribute name="parse" use="optional" default="xml"
type="xi:parseType"/>
<xs:attribute name="xpointer" use="optional" type="xs:string"/>
<xs:attribute name="encoding" use="optional" type="xs:string"/>
<xs:attribute name="accept" use="optional" type="xs:string"/>
<xs:attribute name="accept-language" use="optional" type="xs:string"/>
<xs:anyAttribute namespace="##other" processContents="lax"/>
</xs:complexType>
<xs:simpleType name="parseType">
<xs:restriction base="xs:token">
<xs:enumeration value="xml"/>
<xs:enumeration value="text"/>
</xs:restriction>
</xs:simpleType>
<xs:element name="fallback" type="xi:fallbackType"/>
<xs:complexType name="fallbackType" mixed="true">
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element ref="xi:include"/>
<xs:any namespace="##other" processContents="lax"/>
<xs:any namespace="##local" processContents="lax"/>
</xs:choice>
<xs:anyAttribute namespace="##other" processContents="lax"/>
</xs:complexType>
</xs:schema>
Best Regards,
George
---------------------------------------------------------------------
George Cristian Bina - http://aboutxml.blogspot.com/
<oXygen/> XML Editor, Schema Editor and XSLT Editor/Debugger
http://www.oxygenxml.com
Timothy Reaves wrote:
> On Tue, July 17, 2007 16:13, George Cristian Bina wrote:
>> Dear Timothy,
>>
>>
>> oXygen has an option "Enable XInclude processing" that I believe is
>> enabled by default. When that is enables the validation against XML Schema
>> is performed after XInclude processing, that means the XML Schema should
>> not care about defining the xi:include element but it should take into
>> account that the included fragment will have an xml:base attribute
>> pointing to the location it was included from and probably also an
>> xml:lang. So for
>> instance if you want to have scope elements inside scopes and you plan to
>> include scope elements from other documents using XInclude then you should
>> define xml:base (and xml:lang) to be allowed in the scope element.
>>
>> When the XInclude processing is not enabled then oXygen will validate
>> the document as it is against the specified XML Schema. In that case you
>> need to refer to the xi:include element inside the schema, as in your
>> sample. The problem in your case is the wrong namespace that you used in
>> import, the correct nemespace is http://www.w3.org/2001/XInclude, that is
>> not with 2003.
>>
>> Best Regards,
>> George
>
> Do you have a sample document that shows this working correctly?
>
>
> _______________________________________________
> oXygen-user mailing list
>
> http://www.oxygenxml.com/mailman/listinfo/oxygen-user
More information about the oXygen-user
mailing list