RE: DASL - who wants to use it? (requirements spec?)

Not sure if anybody ever answered your basic question about whether DASL
addresses content querying.  It does.

Here is the query fragment that would search the body of a document:
<D:where>
  <D:contains>Peter Forsberg</D:contains>
</D:where>

This is similar to the property queries, but it does not name a property,
therefore it's the content that must be searched for the string.

Note that it's possible to do exact string matching ("Peter Forsberg") and
string-by-string matching ("Peter" and "Forsberg", not necessarily
together).  Section 5.13.1 of DASL shows both examples.

Lisa

> -----Original Message-----
> From: w3c-dist-auth-request@w3.org
> [mailto:w3c-dist-auth-request@w3.org]On Behalf Of Alan Kent
> Sent: Friday, December 07, 2001 12:25 AM
> To: WebDAV
> Subject: DASL - who wants to use it? (requirements spec?)
>
>
> I remember the recent question about DASL (was it this list?).
> I was wondering if part of the problem with DASL is the question
> of whether it addresses a need, or addresses it appropriately.
>
> We have a text searching engine that can do lots of funky searches
> etc. on the content of resources using fields (lets say dublin
> core elements). But this would be quite a different thing to
> querying on WebDAV properties.
>
> Hence I was interested to understand better the goal of DASL.
> Is it to be able to query WebDAV properities (and nothing else).
> Or was it intended to be broader and cover the harder problem
> of querying content as well?
>
> Just curious to understand the intended scope better before
> I jump in. I found a reference to a dasl requirements document
> (I have not looked it up yet). But is it still valid? I ask
> only because if its been a while and if no one has implemented
> it, is it because they have been busy, or because DASL has
> missed the mark in some way?
>
> Alan
>
> ps: I noticed that DASL seems to allow other queries to be
> plugged in. While this is good, for the above I am not after
> an answer like "you can do anything you like". I am more
> interested in "what do people like/want?"
>
> pps: I also noticed that the "basic" query langauge looked
> rather long when you got down to it - orderby, contains, like,
> three value logic... Convienient if you have an SQL engine around
> I guess.

Received on Monday, 17 December 2001 13:40:06 UTC