XML Pocket Reference, 3rd Edition

Name

rng:interleave — Matches patterns mixed in any order

XML syntax example

<grammar xmlns="http://relaxng.org/ns/structure/1.0">

<start>
 <element name="name">
  <ref name="name"/>
 </element>
</start>

<define name="name">
 <interleave>
  <element name="given">
   <text/>
  </element>
  <optional>
   <element name="middle">
    <text/>
   </element>
  </optional>
  <element name="family">
   <text/>
  </element>
 </interleave>
</define>

</grammar>

Compact syntax example

start = element name { name }
name = element given { text }
 & element middle { text }?
 & element family { text }

Parents

attribute, choice (( ) and |), define (name of pattern followed by =), element, except (-), group (( ) and ,), interleave (&), list, mixed, oneOrMore (+), optional (?), start (start followed by =), zeroOrMore (*)

Description

The interleave pattern interleaves its children. Its most common use is for matching unordered content. interleave containing a text node matches mixed content. An interleave element may contain only one child element that directly or indirectly contains a text element (this avoids combinatorial explosion). Also, it is not possible to interleave data, value, or list patterns with child element or text patterns. RELAX NG does not require deterministic content models as do XML Schema and DTDs.

See also

§8, group, mixed, oneOrMore, optional, zeroOrMore