id-model.3.3.0.source-code.xml.xsd Maven / Gradle / Ivy
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About the XML namespace
This schema document describes the XML namespace, in a form
suitable for import by other schema documents.
See
http://www.w3.org/XML/1998/namespace.html and
http://www.w3.org/TR/REC-xml for information
about this namespace.
Note that local names in this namespace are intended to be
defined only by the World Wide Web Consortium or its subgroups.
The names currently defined in this namespace are listed below.
They should not be used with conflicting semantics by any Working
Group, specification, or document instance.
See further below in this document for more information about how to refer to this schema document from your own
XSD schema documents and about the
namespace-versioning policy governing this schema document.
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.
Notes
Attempting to install the relevant ISO 2- and 3-letter
codes as the enumerated possible values is probably never
going to be a realistic possibility.
See BCP 47 at
http://www.rfc-editor.org/rfc/bcp/bcp47.txt
and the IANA language subtag registry at
http://www.iana.org/assignments/language-subtag-registry
for further information.
The union allows for the 'un-declaration' of xml:lang with
the empty string.
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.
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.
See http://www.w3.org/TR/xmlbase/
for information about this attribute.
id (as an attribute name)
denotes an attribute whose value
should be interpreted as if declared to be of type ID.
This name is reserved by virtue of its definition in the
xml:id specification.
See http://www.w3.org/TR/xml-id/
for information about this attribute.
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".
About this schema document
This schema defines attributes and an attribute group suitable
for use by schemas wishing to allow xml:base,
xml:lang, xml:space or
xml:id 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/xml.xsd"/>
or
<import namespace="http://www.w3.org/XML/1998/namespace"
schemaLocation="http://www.w3.org/2009/01/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.
Versioning policy for this schema document
In keeping with the XML Schema WG's standard versioning
policy, this schema document will persist at
http://www.w3.org/2009/01/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/2009/01/xml.xsd
will not change.
Previous dated (and unchanging) versions of this schema
document are at: