Name
xs:group(reference) — Reference to a global elements group declaration or local definition (local definitions cannot be referenced).
Synopsis
<xs:group id = xs:ID maxOccurs = ( xs:nonNegativeInteger | “unbounded” ) : “1” minOccurs = xs:nonNegativeInteger : “1” ref = xs:QName {any attributes with non-schema namespace} > Content: (xs:annotation?) </xs:group>
May be included in: xs:choice (outside a group), xs:choice (within a group), xs:complexType (local definition), xs:complexType (global definition), xs:extension (complex content), xs:restriction (complex content), xs:sequence (within a group), xs:sequence (outside a group)
Description
Used in a local context, xs:group
is a reference
to an element group. The effect is a logical replacement of the group
reference by the group’s content.
When a group is being redefined (through
xs:redefine
), a self reference (i.e., a reference
to the group being redefined) specifically means
“include the original content of the group at this
location.”
Restrictions
Groups cannot be recursive (i.e., a group cannot be referred to either directly or indirectly within its definition).
Example
<xs:element name="author"> <xs:complexType> <xs:sequence> <xs:group ref="name"/> <xs:element ref="born"/> <xs:element ref="dead" minOccurs="0"/> </xs:sequence> <xs:attribute ref="id"/> </xs:complexType> </xs:element>
Attributes
-
id
W3C XML Schema’s element ID.
-
maxOccurs
Maximum number of occurrences of the group.
-
minOccurs
Minimum number of occurrences of the group. ...
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