Question

How would I define an element that can either contain plain text or contain elements? Say I wanted to somehow allow for both of these cases:

<xs:element name='field'>     <xs:complexType>         <xs:sequence>             <xs:element ref='subfield' minOccurs='0' maxOccurs='unbounded' />         </xs:sequence>         <xs:attribute name='name' type='xs:string' />     </xs:complexType> </xs:element>  <xs:element name='field' type='xs:string' /> 

… so that both these elements would be valid:

<field name='test_field_0'>     <subfield>Some text.</subfield> </field>  <field name='test_field_1'>Some more text.</field> 

Answer 1

I did some research on this a while ago and the only solution I found was to used the mixed attribute:

<xs:element name='field'>     <xs:complexType mixed='true'>         <xs:sequence>                 <xs:element ref='subfield' minOccurs='0' maxOccurs='unbounded' />         </xs:sequence>         <xs:attribute name='name' type='xs:string' />     </xs:complexType> </xs:element> 

This sadly also allows

<field name='test_field_0'>     Some text I'm sure you don't want.     <subfield>Some text.</subfield>     More text you don't want. </field> 

Hopefully someone will give a better answer.