Mailing-List: contact java-user-help@lucene.apache.org; run by ezmlm
Precedence: bulk
Reply-To: java-user@lucene.apache.org
Received-SPF: pass (asf.osuosl.org: local policy)
Content-class: urn:content-classes:message
Subject: RE: Alternate Use of Lucene
MIME-Version: 1.0
Content-Type: text/plain;
	charset="us-ascii"
Content-Transfer-Encoding: quoted-printable
Date: Sun, 12 Mar 2006 09:46:52 +0200
Message-ID: <39B0FB508E5D7540ACA5AD57225E150D392107@xmail.me.corp.entopia.com>
Thread-Topic: Alternate Use of Lucene
Thread-Index: AcZEcgjmoinK/J/yQ5WygcQY8xR/sgBNoXRQ
From: "Andrew Schetinin" <aschetinin@entopia.com>
To: <java-user@lucene.apache.org>,
	<jimcook@visualxs.com>

Hi James,

>From one side, it is easy - you simply enumerate all the found objects,
and for each object retrieve the field Supervisor, sorting and removing
duplicates on the fly.
>From the other side, this way you'll get linear performance, and even
worse - retrieving fields is not a very fast operation.
But there is no other way to do it in Lucene, AFAIK. Lucene was not
designed for such usage.

Best Regards,

Andrew


-----Original Message-----
From: James Cook [mailto:djamescook@gmail.com]=20
Sent: Friday, March 10, 2006 8:39 PM
To: java-user@lucene.apache.org
Subject: Alternate Use of Lucene

Is there a technique, using Lucene, to retrieve the remaining index
values from the results of a query?

Here is a better explanation of the question.

I have various fields that have been indexed on a particular collection
of Java POJO's. For example, an Employee object may have the following
fields: id, salary, hire date, termination date, department, supervisor,
etc..

I want to issue a query such as "department: 15". This restricts my list
of Employee objects to those with a department value of 15. What may be
a little different at this stage is I don't care about the resulting
Employee list. What I really want is access to the Lucene index values
for the 'supervisor' field. Basically, I want a list of those
supervisors for the resulting filtered list of Employees.

Does lucene provide an API to access these values?

---------------------------------------------------------------------
To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
For additional commands, e-mail: java-user-help@lucene.apache.org


---------------------------------------------------------------------
To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
For additional commands, e-mail: java-user-help@lucene.apache.org