Re: Proposal : index store - Lucene

[Stefano Mazzocchi]

On 20 Jan 2004, at 11:27, Wallmer, Martin wrote:

-----Original Message-----
From: Michael Oliver [mailto:[EMAIL PROTECTED]
Sent: Montag, 19. Januar 2004 15:13
To: Slide Developers Mailing List
Subject: Re: Proposal : index store - Lucene
On Mon, 2004-01-19 at 06:32, Stefano Mazzocchi wrote:

On 18 Jan 2004, at 22:12, Christophe wrote:

Stefano Mazzocchi wrote:



If you store your properties in one store (eg. DB) and used index
store engine for content search, I expected to have some 
performance
issues when you search on prop and content.


hmmm, not sure I follow you, can you elaborate on this more? it 
would
be very appreciated.

How do you make a query that used criteria on properties and full 
text
search?
eh, good question :-)
Using DASL this is streightforward:
my smile was based not the lack of syntax to define this, but on making 
this natural and scalable.

a query that gets all documents of content type "text/plain" bytes and 
containing the string "jakarta" could be posed as:

<?xml version="1.0" encoding="UTF-8"?>
<searchrequest xmlns:D="DAV:" 
xmlns:xsv="http://namespaces.softwareag.com/tamino/webdav";>>
  <D:basicsearch>
    <D:select>
      <D:allprop/>
    </D:select>
    <D:from>
      <D:scope>
        <D:href>mycoll</D:href>
      </D:scope>
    </D:from>
    <D:where>
      <D:and>
        <D:eq>
          <D:prop>
            <D:getcontenttype/>
          </D:prop>
          <D:literal>text/plain</D:literal>
        </D:eq>
        <D:contains>jakarta</D:contains>
      </D:and>
    </D:where>
  </D:basicsearch>
</searchrequest>

A Full text search on properties can be achieved with the operator 
<LIKE>
Would you suggest that we somehow differentiate basic-search queries 
and run them thru different engines depending on the nature of the 
query? [curious]

This is an alternative scenario respect to providing another DASL query 
language for specific for full-text and associating the query engine 
with the language used, not with the type of query in a particular 
language.

What do others think about this?

--
Stefano.
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