Re: Ordening documents

Tue, 20 Jan 2004 10:39:30 -0800

Yes, this is correct.

Peter Keegan wrote: 
So they are sorted by reverse document number. Is this the 'external'
document number (the one that is adjusted for the segment's base)? If so,
then this means that documents with equal score are returned in the order in
which they were added to the index.  Is this correct?

Thanks,
Peter

----- Original Message ----- From: "Morus Walter" <[EMAIL PROTECTED]>
To: "Lucene Users List" <[EMAIL PROTECTED]>
Sent: Saturday, January 17, 2004 4:57 PM
Subject: Re: Ordening documents



Peter Keegan writes:

What is the returned order for documents with identical scores? 

have a look at the source of the lessThan method in
org.java.lucene.search.HitQueue:

protected final boolean lessThan(Object a, Object b) {
   ScoreDoc hitA = (ScoreDoc)a;
   ScoreDoc hitB = (ScoreDoc)b;
   if (hitA.score == hitB.score)
     return hitA.doc > hitB.doc;
   else
     return hitA.score < hitB.score;
}

sorting is done by this method.

HTH
Morus

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