RELAX NG

Name

interleave — interleave pattern

Synopsis

element interleave
{
 (
 attribute ns { text }?,
 attribute datatypeLibrary { xsd:anyURI }?,
 attribute * - (rng:* | local:*) { text }*
 ),
 (
 ( element * - rng:* { ... }* )
 & (
 element element { ... }
 | element attribute { ... }
 | element group { ... }
 | element interleave { ... }
 | element choice { ... }
 | element optional { ... }
 | element zeroOrMore { ... }
 | element oneOrMore { ... }
 | element list { ... }
 | element mixed { ... }
 | element ref { ... }
 | element parentRef { ... }
 | element empty { ... }
 | element text { ... }
 | element value { ... }
 | element data { ... }
 | element notAllowed { ... }
 | element externalRef { ... }
 | element grammar { ... }
 )+
 )
}

Class

pattern

May be included in

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

Compact syntax equivalent

pattern&pattern

Description

The interleave pattern “interleaves” subpatterns; it allows their leaves to be mixed in any order.

interleave does more than define unordered groups, as you can see in the following example. Consider element a and the ordered group of element b1 and b2. An unordered group of these two patterns allows only element a followed by elements b1 and b2 or elements b1 and b2 followed by element a. An interleave of these two patterns allows these two combinations, but also element b1 followed by a followed by b2. It allows any combination in which the element a has been interleaved between elements ...