xml - Order of element in an inherited complex type -

xml - Order of element in an inherited complex type -

i have xsd schema utilize validate xml files.

in xsd schema, created complex type containing attributes grouping , choice, containg "_output", recurring element.

my complex type :

<xs:complextype name="base_action"> <xs:choice minoccurs="0" maxoccurs="unbounded"> <xs:element name="_output" minoccurs="0" maxoccurs="unbounded"/> </xs:choice> <xs:attributegroup ref="action"/> </xs:complextype>

i have other elements (with kid elements of own) inheriting complex type.

an exemple of such inheriting element :

<xs:element name="ex_elem" minoccurs="0"> <xs:complextype> <xs:complexcontent> <xs:extension base="cockpit_base_action"> <xs:choice minoccurs="0" maxoccurs="unbounded"> <xs:element name="to" minoccurs="0"/> <xs:element name="from" minoccurs="0"/> </xs:choice> </xs:extension> </xs:complexcontent> </xs:complextype> </xs:element>

now, in xml, work :

<ex_elem> <_output/> <from>0</from> <to>1</to> </ex_elem>

but not :

<ex_elem> <from>0</from> <_output/> <to>1</to> </ex_elem>

or :

<ex_elem> <from>0</from> <to>1</to> <_output/> </ex_elem>

from understand, selection complex type can't mix selection of inheriting element. problem me, because there sitations want set _output somewhere else @ top.

i want able utilize element without having bother sequence. there way so?

in xsd 1.0, extension of base of operations type creates sequence first fellow member old content model , sec fellow member top of extension's add-on content model. effective content model of extension of cockpit_base_action is

<xs:sequence> <xs:choice minoccurs="0" maxoccurs="unbounded"> <xs:element name="_output" minoccurs="0" maxoccurs="unbounded"/> </xs:choice> <xs:choice minoccurs="0" maxoccurs="unbounded"> <xs:element name="to" minoccurs="0"/> <xs:element name="from" minoccurs="0"/> </xs:choice> </xs:sequence>

in xsd 1.1, can alter base of operations type utilize xs:all, , utilize xs:all in extension, effect want.

or (in either 1.0 or 1.1), can alter extension take language want. should have effect seem desire:

<xs:extension base="cockpit_base_action"> <xs:sequence minoccurs="0"> <xs:choice> <xs:element name="to"> <xs:element name="from"/> </xs:choice> <xs:choice minoccurs="0" maxoccurs="unbounded"> <xs:element name="_output"/> <xs:element name="to"> <xs:element name="from"/> </xs:choice> </xs:sequence> </xs:extension>

i've omitted occurrence indicators on children of selection elements, since have no effect on language accepted: optional when containing selection (or sequence containing it) optional; can repeat without bound, when containing selection can so.

xml xsd complextype