This is of great interest to me, having spent the last few weeks devising a search query syntax for a digital library which makes extensive use of Atom/AtomPub. Have you see the Contextual Query Language which is part of SRU? (http://www.loc.gov/standards/sru/specs/cql.html). Atom is making inroads into the library space (note that the recently released OAI-ORE spec has an Atom serialization http://www.openarchives.org/ore/0.1/atom) and I would LOVE to see a well-thought out query language. Perhaps FIQL is to OpenSearch as CQL is to SRU?? Any thoughts?

-peter keane
daseproject.org


Mark Nottingham wrote:

FYI; I'd love any feedback folks have on this.

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From: [EMAIL PROTECTED]
Date: 19 December 2007 7:15:02 AM
To: [EMAIL PROTECTED]
Subject: I-D ACTION:draft-nottingham-atompub-fiql-00.txt
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A New Internet-Draft is available from the on-line Internet-Drafts
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    Title        : FIQL: The Feed Item Query Language
    Author(s)    : M. Nottingham
    Filename    : draft-nottingham-atompub-fiql-00.txt
    Pages        : 16
    Date        : 2007-12-18
The Feed Item Query Language is a simple but flexible, URI-friendly
  syntax for expressing filters across the entries in a Web feed.  It
  also specifies a mechanism to allow feeds to indicate what types of
  queries are supported.


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--
Mark Nottingham     http://www.mnot.net/

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