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Re: XML Schema --> C++

  • From: Indrajit Chaudhuri <IndrajitC@c...>
  • To: xml-dev@i...
  • Date: Fri, 21 Jan 2000 11:46:14 +0530

xml schema c class
There is a tool from Oracle which generates C++ classes from a DTD
specified in an XML file. The tool is available here :
http://technet.oracle.com/tech/xml/classgen_cpp/


Thanks,
Indrajit


Abhishek Srivastava wrote:
> 
> I also want to auto generate code of a c++ class that could contain the data
> of an XML file.
> I tried to create one but found it very complex as the DTD can have
> 
> 1. any level of nested elements and aggregates.
> 2. Elements and attributes can optional.
> 3. The OR conditions that are specified in the DTD.
> 
> Is it possible we have something like a IDL compiler ? the idl compiler
> reads the IDL file and generates C++ classes that can be used to implement
> that object. Can a utility read a DTD or a schema and auto generate the code
> for a C++ class.
> 
> This utility will be very useful, as many legacy systems do not understand
> the DOM tree or xml... so in order to reuse the legacy code the data from
> the dom tree needs to be put in a regular c++ object and fed to the legacy
> system and the output from a C++ object converted to xml and then sent over
> the web.
> 
> If an effort is started to write such a utility what other complexities
> might arise ?
> 
> regards,
> Abhishek.
> 
> ----- Original Message -----
> From: "Jean Marc VANEL" <jean-marc_vanel@e...>
> To: <xml-dev@i...>; <xml-dev-ig%PMDF%MHMAIL@m...>; "tcs-infra"
> <tcs-infra@e...>; "Madjid OUTENAH" <m_outenah@e...>;
> <s_durfort@m...>; <j_lolieux@m...>;
> <f_clerc@m...>; <thomas_moutel@e...>; <d_asseline@e...>;
> <guy_dauchet@e...>; "Sonia BILLINGS" <s_billings@e...>
> Sent: Thursday, January 20, 2000 3:12 PM
> Subject: XML Schema --> C++
> 
> >
> >
> > Hello
> >
> > I want to try to generate C++ class declarations from an XML Schema .
> >
> > Something like:
> >
> > <template select = '//type' >
> >   class <value-of select="@name"/> {
> >    <apply-templates/>
> >   };
> > </template>
> >
> > <template select = '//element' >
> >   <value-of select="@type"/> <value-of select="@name"/> ;
> > </template>
> >
> > Remarks:
> > - not yet tested
> > - as writen this would generate embeded classes
> > - ID's and IDREF's would map to void* and list<void*>
> > - same principle could be applied to Java etc
> > - it is desirable to also generate code to fill the C++ objects using DOM
> or SAX API, but it seems more difficult
> > - it's also possible (another project!) to parse C++ declarations and
> generate an XML Schema ; could a round-trip be possible ?
> >
> >
> >
> > xml-dev: A list for W3C XML Developers. To post, mailto:xml-dev@i...
> > Archived as: http://www.lists.ic.ac.uk/hypermail/xml-dev/ or CD-ROM/ISBN
> 981-02-3594-1
> > Please note: New list subscriptions now closed in preparation for transfer
> to OASIS.
> >
> >
> 
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