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From "Philipp Chudinov" <morph...@basko.ru>
Subject Re: Order by date
Date Tue, 03 Sep 2002 05:29:26 GMT
Thank you, Peter!
Though I can not index them in a chronological order, I understand how it
works.
Phil.

----- Original Message -----
From: "Peter Carlson" <carlson@bookandhammer.com>
To: "Lucene Users List" <lucene-user@jakarta.apache.org>
Sent: Tuesday, September 03, 2002 10:56 AM
Subject: Re: Order by date


> Phil,
>
> Lucene returns results in the same order as they were added to the
> index. So if you want to sort by date, and only by date then add
> documents to your index in chronological order.
>
> If you want to sort by more than one field, then one solution (and
> probably the fastest) is to get all terms of a given field and sort
> them along with their unique Lucene ID. Then, when you want to sort the
> subset of results, so the sort yourself based on the ID without using
> the index (using the index to get the values to sort will be much
> slower then getting all the values first and storing them). This was
> done in SearchBean in the contributions area if you want to see an
> example.
>
> I hope this helps
>
> --Peter
>
>
> On Monday, September 2, 2002, at 01:32 PM, Philipp Chudinov wrote:
>
> > Thank you, Terry. But I need to do it without additional classes or
> > smth.
> > I just can not understand the problem... I've tried to reindex the
> > stuff
> > with
> >
> > doc.add(Field.Keyword("_published", DateField.dateToString(date)));
> >
> > and to search with
> >
> >       Query query = new RangeQuery(null, new Term("_published",
> > DateField.dateToString(new java.util.Date())), true);
> >       DateFilter filter = DateFilter.Before("_published", new
> > java.util.Date());
> >       Hits hits = searcher.search(query, filter);
> >
> > maybe, I misunderstand how to use this filter? Does RangeQuery
> > automatically
> > order results by field? Looks like it should... people in the
> > mailinglist
> > says, that my first approach works well (when encoding date to string
> > with
> > pattern(yyyyMMdd), but iam still lobotomized;(
> > Phil.
> >
> > ----- Original Message -----
> > From: "Terry Steichen" <terry@net-frame.com>
> > To: "Lucene Users List" <lucene-user@jakarta.apache.org>
> > Sent: Tuesday, September 03, 2002 1:16 AM
> > Subject: Re: Order by date
> >
> >
> >> Try Peter Carlson's SearchBean contribution.  Check the messages -
> >> there
> > was
> >> quite a bit of discussion on it.
> >>
> >> Regards,
> >>
> >> Terry
> >>
> >> ----- Original Message -----
> >> From: "Philipp Chudinov" <morpheus@basko.ru>
> >> To: "Lucene Users List" <lucene-user@jakarta.apache.org>
> >> Sent: Monday, September 02, 2002 3:21 PM
> >> Subject: Order by date
> >>
> >>
> >>> Hi!
> >>> How can I order search results by date? I just need to show n
> >>> documents,
> >>> ordered by date (desc). I index documents with
> >>>
> >>> doc.add(Field.Keyword("_published", new
> >>> SimpleDateFormat("yyyyMMddHHmmss").format(date)));
> >>>
> >>> , so it gives something like "20020619165800" in this field. Then I
> >>> use
> >>> RangeQuery(null, currentdate(formatted the same way
> >>> indexed("yyyyMMddHHmmss"), true). But results are not ordered
> >>> properly.
> >>> Looks like this:
> >>>
> >>> 20020619165800
> >>> 20020619165800
> >>> 20020619165800
> >>> 20020711170700
> >>> 20020711170700
> >>> 20020705131800
> >>> 20020705131800
> >>> 20020619165900
> >>>
> >>> So, how can I order them? Should I write some kind of "DateFilter"
> >>> (as
> >>> suggested here
> >>>
> > http://www.mail-archive.com/lucene-user@jakarta.apache.org/
> > msg01266.html)?
> >>> If so, can't anybody explane me, how can I do this, since I feel
> >>> myself
> > as
> >> a
> >>> lobotomized flatworm now:(
> >>>
> >>> Thanx.
> >>>
> >>>
> >>> --
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> >>>
> >>>
> >>
> >>
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> >
> >
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