Rob Sanderson is the owner of the ZeeRex specifications.  I handed
them over to him two or three years ago.

On 22 February 2010 16:19, Ray Denenberg, Library of Congress
<[log in to unmask]> wrote:
> In the OASIS committee working on SRU 2.0 we are in the process now of
> taking a critical look at Explain and we have a technical question about the
> schema. Perhaps one of you Explain implementors might have some insight.
>
> (There no longer seems to be anyone claiming ownership of Explain, and if
> nobody steps forward, I am going to claim ownership, on behalf of the SRU
> maintenance agency, within the next few weeks.)
>
> Our question is this  There are several datatypes whose definitions look
> like this:
>
>                   <xs:element name='host'>
>                    <xs:complexType mixed='true'>
>                    </xs:complexType>
>                   </xs:element>
>
> What does it mean?   How would it differ from:
>
>                   <xs:element name='host' type = "xs:string">
>
>
> We know what mixed='true' means, if for example, you had
>
>                <xs:element name='host'>
>                <xs:complexType mixed='true'>
>                  <xs:sequence>
>                    <xs:element name="a"/>
>                    <xs:element name="b"/>
>                  </xs:sequence>
>               </xs:complexType>
>              </xs:element>
>
> Then you could have an instance of element <host> that would look like:
>
> <host> (text preceding element a) <a>(content of element a) </a> (text
> between elements a and b) <b>(content of element b)</b> (text following
> element b) </host>
>
> In other words, mixed content and elements, which would not be allowed
> without mixed="true"
>
> But what does the first mean?  The complex definition does not define any
> elements, and it seems to us that it degenerates to nothing more than a
> string.  Nothing else makes any sense.
>
> Anyone have any other interpretations?
>
> Thanks.
>
> --Ray
>