parentRef

parentRef
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Name

parentRef — Reference to a named pattern from the parent grammar

Synopsis

element parentRef
{
 attribute name { xsd:NCName },
 (
 attribute ns { text }?,
 attribute datatypeLibrary { xsd:anyURI }?,
 attribute * - (rng:* | local:*) { text }*
 ),
 ( element * - rng:* { ... }* )
}

Class

pattern

May be included in

attribute, choice, define, element, except, group, interleave, list, mixed, oneOrMore, optional, start, zeroOrMore

Compact syntax equivalent

parent

Description

The parentRef pattern is a reference to a named pattern belonging to the parent grammar—in other words, the grammar in which the current grammar is included. The scope of a named pattern is usually limited to the grammar in which they are defined. The parentRef pattern provides a way to extend this scope and refer to a named pattern defined in the parent grammar.

Example

<define name="born-element">
  <element name="born">
    <text/>
  </element>
</define>
<define name="author-element">
  <grammar>
    <start>
      <element name="author">
        <attribute name="id"/>
        <ref name="name-element"/>
        <parentRef name="born-element"/>
        <optional>
          <ref name="died-element"/>
        </optional>
      </element>
    </start>
    <define name="name-element">
      <element name="name">
        <text/>
      </element>
    </define>
    <define name="died-element">
      <element name="died">
        <text/>
      </element>
    </define>
  </grammar>
</define>

Attributes

datatypeLibrary: This attribute defines the default datatype library. The value is inherited.
name: This attribute specifies the name of the named pattern that is referenced.
ns: This attribute defines the default namespace for the elements defined in a portion of schema. The value is inherited.

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