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   RE: [xml-dev] Embed an XML document in another XML document

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Unfortunately, the CDATA sections solution breaks if the nested document also includes a CDATA section.  The only complete solution is to encode the nested document, either as bas64, or just escape dangerous constructs.  I prefer just representing it inline, and 'escaping' the xml-decl to be something like "<?x-xml ...".  If there is a potential for a doctype decl, you are better off just using base64, as trying to escape a DTD is quite tricky.

-derek

> -----Original Message-----
> From: Bornholtz, Tim [mailto:Tim.Bornholtz@ed.gov]
> Sent: Wednesday, December 29, 2004 11:55 AM
> To: Jean-NoŽl Colin; xml-dev@lists.xml.org
> Subject: RE: [xml-dev] Embed an XML document in another XML document
> 
> If you really need to have any sort of content within your body then you
> can define the body tag to contain a CDATA section.  Then your document
> will look like this:
> 
> 
> <?xml version="1.0" encoding="UTF-8"?>
> <message ... >
>     <messageid>123456</messageid>
>     <body><![CDATA[
>     <?xml version="1.0" encoding="UTF-8"?>
> <filter ... >
>     <and>
>     <comp><op>eq</op><field>1.3</field><value>value1</value></comp>
>     <comp><op>eq</op><field>1.2</field><value>value2</value></comp>
>     </and>
> </filter>
>     ]]></body>
> </message>
> 
> I'm sure there are a lot of other complicated ways to do this, but this is
> simple and it works.
> 
> Hope this helps,
> Tim Bornholtz
> 
> 
> -----Original Message-----
> From: Jean-NoŽl Colin [mailto:jean-noel.colin@oxys.be]
> Sent: Wednesday, December 29, 2004 5:23 AM
> To: xml-dev@lists.xml.org
> Subject: [xml-dev] Embed an XML document in another XML document
> 
> 
> Hi
> 
> I would like to create a XML Schema that would define the structure of an
> XML document that contains XML document
> 
> Typically, something like
> 
> <?xml version="1.0" encoding="UTF-8"?>
> <message ... >
>     <messageid>123456</messageid>
>     <body>
>     <?xml version="1.0" encoding="UTF-8"?>
> <filter ... >
>     <and>
>     <comp><op>eq</op><field>1.3</field><value>value1</value></comp>
>     <comp><op>eq</op><field>1.2</field><value>value2</value></comp>
>     </and>
> </filter>
>     </body>
> </message>
> 
> I tried defining the schema like this, using different definitions for the
> body element, but I can't validate it.
> 
> <?xml version="1.0" encoding="UTF-8"?>
> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema";
>     targetNamespace="http://voyager.oxys.be/xml/ns/MyTest-0_1";
>     xmlns="http://voyager.oxys.be/xml/ns/MyTest-0_1";
> elementFormDefault="qualified" attributeFormDefault="unqualified">
>     <xs:element name="message" type="MessageType"/>
>     <xs:complexType name="MessageType">
>         <xs:sequence>
>             <xs:element type="xs:NMTOKEN" name="messageid"/>
>             <xs:element type="xs:anyType" name="body"/>
>         </xs:sequence>
>     </xs:complexType>
> </xs:schema>
> 
> 
> The reason I need this is because I have to define a structure of a
> message
> that is able any type of body. So I can't define the type of the body
> (using
> a choice, for instance).
> 
> Any suggestion welcome,
> 
> Happy New Year
> 
> Jean-Noel Colin
> 
> 
> 
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