RE: [xsl] Generic stylesheet to flatten XML hierarchy

[Sara Mitchell <samitchell6@xxxxxxxxx>]

Sorry, I hit Send too quickly. 

With input like this: 
<rss ...some
attributes>
  <channel ...some attributes>
   <title>value may be
mixed</title>
   <link>value</link>
   ...more siblings that do not repeate
<item>
    <title>value</title>
    <description> mixed content</description>
<link>value</link>
    ...more descendants
  </item>
  <item> ...</item>
...more items
  </channel>
</rss> 

I would like XML output like this:
<root>
<row>
  <rss-attr1>value</rss-attr1>
  ...more rss/@* as elements
<channel-attr*>value</channel-attr*>
  ...more channel/@*
<channel-title>value or perhaps CDATA surrounding mixed
content</channel-title>
  <channel-link>value</channel-link>
  ... all other
non-repeating siblings in order as elements
  <item-title>value for first
item</item-title>
  <item-description> probably CDATA around mixed
content</item-description>
  ...all other item fields in order traversing
depth-first
</row>
<row>...again rss attributes, channel attributes,
non-repeating children of channel followed by fields for second item </row>
...more rows ...
</root> 

This example is for a single level of repeating
descendants, but my solution has to be able to handle any level of repeating
descendants. More over, the stylesheet has no knowledge of the structure of
the input document. 

I have a solution that works ok by traversing the input
document in doc order -- but it does not handle the siblings of repeating
nodes that are not themselves repeating. 

I have thought of doing this the
opposite way, get a key of all repeating nodes and process only those at the
lowest depth to generate rows.  I haven't actually written the logic. 

Any
better ideas would be welcome.
--- On Thu, 12/3/09, Michael Kay
<mike@xxxxxxxxxxxx> wrote:

> From: Michael Kay <mike@xxxxxxxxxxxx>
> Subject:
RE: [xsl] Generic stylesheet to flatten XML hierarchy
> To:
xsl-list@xxxxxxxxxxxxxxxxxxxxxx
> Date: Thursday, December 3, 2009, 3:54 PM
>
> I've been wandering through the
> archives and other searches 
> > and so
far have not found exactly what I am hoping to
> find. I 
> > need to write an
XSLT stylesheet that accepts an
> unknown XML 
> > document and flattens the
hierarchy to a
> two-dimensional 
> > row/columns structure. 
> > 
> 
> The
hard part of the problem is specifying what you want to
> happen. Once
>
you've done that, I would think that coding it is fairly
> easy.
> 
> Regards,
> 
> Michael Kay
> http://www.saxonica.com/
> http://twitter.com/michaelhkay
> 
> 
> 
>
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