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RE: SEARCH draft 06 submitted

From: Wallmer, Martin <Martin.Wallmer@softwareag.com>
Date: Wed, 11 Feb 2004 10:20:59 +0100
Message-ID: <37B64F4BA60E9E4FB9F60929E05980243EC341@DAEMSG03.eur.ad.sag>
To: "Julian Reschke" <julian.reschke@gmx.de>, <FengAndy@aol.com>
Cc: <www-webdav-dasl@w3.org>

Hi,

Software AG has defined a proprietary <xsv:xpath> operator for content data. It was easy to implement, just pass the xpath query to the underlying XML engine Tamino. However, this would be very hard to implement in a performant manner for a non XML storage (file system or RDBMS).

Regards,

Martin Wallmer

> -----Original Message-----
> From: www-webdav-dasl-request@w3.org
> [mailto:www-webdav-dasl-request@w3.org]On Behalf Of Julian Reschke
> Sent: Dienstag, 10. Februar 2004 18:37
> To: FengAndy@aol.com
> Cc: www-webdav-dasl@w3.org
> Subject: Re: SEARCH draft 06 submitted
> 
> 
> 
> FengAndy@aol.com wrote:
> 
> > Julian:
> >  
> > I wonder why WebDAV Search is NOT based on XPath/XQuery.
> >  
> > Conceptaully, a WebDAV storage contains metadata 
> (property+folder) and 
> > data blobs. WebDAV metadata could be easily modeled as XML. 
> Therefore, 
> > XQuery/XPath could be applied for search.
> >  
> > Any comments?
> 
> Yes.
> 
> The DAV:basicsearch grammar is *meant* to be simple, and it 
> should map 
> as directly as possible to a simple database table.
> 
> Of course XPath would be a very interesting *additional* 
> query grammar 
> for SEARCH, and I'm aware of at least two experimental 
> implementations. 
> But I think it's too early to standardize on that -- let's get the 
> simpler things done first.
> 
> A DAV:xpath grammar would belong into a separate spec. 
> Anybody volunteering?
> 
> Julian
> 
> -- 
> <green/>bytes GmbH -- http://www.greenbytes.de -- tel:+492512807760
> 
> 
Received on Wednesday, 11 February 2004 04:22:22 GMT

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