[lxml-dev] instance from schema

[jholg at gmx.de]

Hi,

 
> I'm looking for a freely available tool that can generate xml instance 
> documents from an xml schema.  I'm aware of Sun's xmlgen, but I cannot 
> find a valid web link to it.  Does anyone have a current link to Sun's 
> xmlgen or know of a similar tool?

>  
 If you mean random valid sample documents:

 Seems like eclipse has tools for such tasks: 


http://www.eclipse.org/webtools/community/tutorials/XMLWizards/XMLWizards.html

 You can definitely do the like with oXygen xml editor, but this is not 
free software;

although you can get a temporary evaluation licence.

 generateDS lets you create data structures from a given schema which you 
can

then populate and serialize:

 http://www.rexx.com/~dkuhlman/generateDS.html

 I don't know if this can be easily used to create valid random sample 
data.

  
> When writing such a tool, wouldn't you need to load the schema as an xml 
> document, walk the tree, and output appropriate instance xml (probably 
> not trivial, given xml schema's complexity)?
 I'd say so. An alternative might be to implement such functionality using 
an 

elaborate XSLT.

 Regarding lxml, you could of course create an instance document through 
the lxml API(s)

and then validate.

 Holger 


> 

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