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XML Schema
book

XML Schema

by Eric van der Vlist
June 2002
Intermediate to advanced content levelIntermediate to advanced
396 pages
11h 8m
English
O'Reilly Media, Inc.
Content preview from XML Schema

Name

xs:choice(within a group) — Compositor to define group of mutually exclusive elements or compositors. The number of occurrences cannot be defined when xs:choice is used within a group.

Synopsis

<xs:choice
           id          = xs:ID
           {any attributes with non-schema namespace}
           >
           Content: (xs:annotation?, (xs:element | xs:group | xs:choice |
                     xs:sequence | xs:any)
          )*)
</xs:choice>

May be included in: xs:group (definition)

Description

When embedded in a group definition, the xs:choice compositor has the same function as other contexts, except that the number of its occurrences is defined in the xs:group reference instead of by the minOccurs and maxOccurs attributes of the xs:choice compositor.

Restrictions

The minOccurs and maxOccurs attributes that are allowed in other contexts are forbidden.

Example

<xs:group name="author-or-character">
  <xs:choice>
    <xs:element ref="author"/>
    <xs:element ref="character"/>
  </xs:choice>
</xs:group>

Attributes

id

W3C XML Schema’s element ID.

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Publisher Resources

ISBN: 0596002521Supplemental ContentErrata Page