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Re: Version 1.0 of SRW and CQL

From: Adam Dickmeiss <adam@indexdata.dk>
Date: Mon, 2 Dec 2002 11:48:58 +0100
To: www-zig@w3.org
Message-ID: <20021202104858.GA6662@indexdata.com>

On Mon, Dec 02, 2002 at 05:00:13AM -0500, Eliot Christian wrote:
> 
> At 11:24 AM 11/29/2002 +0000, Robert Sanderson wrote:
> 
[snip]
> >[...] Mike Taylor I believe already has a CQL library in Java that
> >converts the CQL format into the equivalent PQN for building gateways.
> 
> That's good but to enable use of SRW/SRU I think we need agreements and
> tools for making CQL out of arbitrary PQN, don't we? (Noting that PQN
> itself directly translates from/to Z39.50 query structures.)

Converting from CQL to Type-1 is difficult, due to a few "missing"
attributes in Bib-1: Right anchor (last position in field),
CQL masking for terms, etc.

Converting from Type-1 to CQL is currently impossible. CQL simply doesn't
carry attribute types and attribute values.

-- Adam

> Eliot
> 
> 
> 
> Eliot Christian echristi@usgs.gov  1-703-648-7245 FAX 1-703-648-7112
> US Geological Survey, 802 National Center, Reston VA 20192
> 

-- 
Adam Dickmeiss  mailto:adam@indexdata.dk  http://www.indexdata.dk
Index Data      T: +45 33410100           Mob.: 212 212 66
Received on Monday, 2 December 2002 05:49:15 GMT

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