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RE: Revised charter

From: Fay, Chuck <CFay@filenet.com>
Date: Mon, 6 Apr 1998 13:54:57 -0700
Message-ID: <72B1992276A9D111A20E00805FEAC96D695AC1@cm-expo1.filenet.com>
To: Alex Hopmann <hopmann@holonet.net>, www-webdav-dasl@w3.org
Alex,

> The working group will define the
> following for a server-side searching mechanism:
>
> - How to express the search: the syntax and semantics of a query
> - How to focus the query by identifying its scope
> - How to discover the search capability of a resource.
> - The syntax for the search results

The third bullet above on discoverability is potentially confusing, in
that it refers to a single resource.  Discovering the search
capabilities of a single resource is only interesting if that resource
can act as a search scope representing a set of resources (e.g., nested
below it in the namespace), and the capabilities actually apply to
searching the set of resources.  I assume that's what is meant here, but
it could be stated more clearly as:

- How to discover the search capabilities of a scope

or

- How to discover the search capabilities of a set of resources

--Chuck Fay
FileNET Corporation, 3565 Harbor Blvd., Costa Mesa, CA 92626
phone:  (714) 966-3513, fax:  (714) 966-3288, email:  cfay@filenet.com

> -----Original Message-----
> From:	Alex Hopmann [SMTP:hopmann@holonet.net]
> Sent:	Saturday, April 04, 1998 8:45 PM
> To:	www-webdav-dasl@w3.org
> Subject:	Revised charter
> 
> Here is a revised proposed charter for DASL, based on some feedback
> and some
> wordsmithing by various folks in Los Angeles. Please comment on this
> asap to
> the list (or privately to me), since I intend to submit this to the
> IESG by
> the end of next week.
> 
> ---------------------------------------------------
> 
> DAV Searching and Locating (DASL)
> 
> Last Modified: 04-02-98
> 
> Chair(s):
> 
> Alex Hopmann, <alexhop@microsoft.com>
> 
> Applications Area Director(s):
> 
> Keith Moore, <moore@cs.utk.edu>
> Harald Alvestrand <Harald.T.Alvestrand@uninett.no>
> 
> Applications Area Advisor:
> 
> TBD
> 
> Mailing Lists:
> 
> General Discussion: www-webdav-dasl@w3.org
> 
> To Subscribe: www-webdav-dasl-request@w3.org Put subscribe in body
> 
> Archive: http://lists.w3.org/Archives/Public/www-webdav-dasl/
> 
> Description of Working Group
> 
> The goal of this working group is to define and develop an extensible
> DAV
> Searching and Locating protocol as an application of HTTP.  The
> working
> group will define protocol elements that enable server-executed
> queries to
> locate resources based upon their property values and text content as
> expressed by the DAV data model.
> 
> Problem Definition
> 
> WEBDAV and HTTP enable client-side searching by defining a simple set
> of
> mechanisms (the PROPFIND and GET methods) to locate those resources
> meeting
> client-defined criteria. These mechanisms can be inefficient, do not
> adequately deal with some simple content-based queries, and do not
> take
> advantage of the advanced querying and caching capabilities of modern
> storage systems.
> 
> The DASL Protocol will enable a HTTP/1.1 compliant scheme for
> server-side
> searching to address these limitations. The working group will define
> the
> following for a server-side searching mechanism:
> 
> - How to express the search: the syntax and semantics of a query
> - How to focus the query by identifying its scope
> - How to discover the search capability of a resource.
> - The syntax for the search results
> 
> 
> Working Group Scope
> 
> A generalized search mechanism is a broad problem space. It
> encompasses a
> variety of object models, typing schemes, and media. By focusing on a
> subset
> of this space, the problem of locating resources based on property
> values
> and text content, the working group will leverage much of the existing
> work
> that has been done on querying under simple property and resource
> models.
> 
> In-Scope items include:
> - typing
> - comparisons (>, >=, <, <=, !=, ==)
> - internationalized content
> - text content matching
> - dealing with arbitrary XML values
> 
> Out-of-scope items include:
> - definitions of well-known properties
> - server-to-server communication protocols
> - cross-language comparisons
> - searching for non-text content (images, video, audio, etc.)
> - client control of server administration (e.g. indexing)
> 
> Deliverables
> 
> The final output of this working group is expected to be two
> documents:
> 
> (1) A requirements document, that describes the high-level functional
> requirements for DASL, including rationale. This will be an
> Informational
> document.
> 
> (2) A protocol specification describing the additions to HTTP (new
> methods,
> headers, request bodies, and response bodies) needed to implement the
> DASL
> requirements. This will be a Standards Track document.
> 
> Goals and Milestones:
> 
> Done - Draft Working Group Charter. Establish mailing list, archive,
> and
> homepage.
> 
> Feb 98 - Produce initial Requirements document. Submit as Internet
> Draft.
> 
> Mar 98 - Produce DASL protocol specification. Submit as Internet
> Draft.
> 
> Mar 98 - Meet in LA IETF and hold working group meeting to develop the
> protocol specification and requirements document.
> 
> Aug 98 - Meet in Chicago IETF to further develop protocol
> specification.
> 
> Aug 98 - Complete Scenarios document.
> 
> Dec 98 - Create final version of DASL requirements document.  Submit
> as
> Informational RFC.
> 
> Mar 99 - Complete revisions to DASL protocol. Submit as a Proposed
> Standard
> RFC
> 
> 
> 
> 
Received on Monday, 6 April 1998 16:57:24 GMT

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