A question about a complex type

["Sergey Beryozkin" <sberyozkin@zandar.com>]

Hello,

I have the following complex type definition ( which is part of our
web-services type library defined in wsdl):

<complexType name="FileInfo">
      <element name="mask" type="int"/>
      .....
      <element name="pips" type="tns:PipInfo" minOccurs="0"/>
      <element name="captions" type="tns:LabelInfo" minOccurs="0"/>
      .....
      <element name="clocks" type="tns:LabelInfo" minOccurs="0"/>
</FileInfo>

My intention is to use "mask" as a hint for the processing module as to
which of the remaining elements defined by FileInfo type are in a FileInfo
instance.
Is there a better way to express this semantics using XMLSchema ?

One problem is that a client auto-generated by a wsdl-compiler expects an
instance of FileInfo as a parameter to some of the operations. In operations
like saveFile(FileInfo) I will pass FileInfo as it's defined in wsdl, but in
operations like updateActiveFile(FileInfo) I'd just like to set FileInfo's
mask and let the underlying XML software to deside how to send FileInfo over
the wire. Is it possible at all ?

Thanks a lot,
Cheers
Siarhei Biarozkin