RE: Alternative to looping through Hits

[Digy]

Use "HitCollector" instead of "Hits". "Hits" re-executes the search when you
need more than 100 hits.

DIGY

-----Original Message-----
From: Trevor Watson [mailto:twat...@datassimilate.com] 
Sent: Friday, October 02, 2009 5:40 PM
To: lucene-net-user@incubator.apache.org
Subject: Alternative to looping through Hits

I am currently attempting to create a comma separated list of IDs from a 
given Hits collection.

However, when we end up processing 6,000 or more hits, it takes 25-30 
seconds per collection.  I've been trying to find a faster way to change 
the search results to the comma separated list.  Do any of you have any 
advice?  Thanks in advance.

Trevor Watson


My current code looks like

Lucene.Net.Search.Searcher search = new 
Lucene.Net.Search.IndexSearcher(string.Format("c:\\sv_index\\" + 
jobId.ToString()));
            Lucene.Net.Search.Hits hits = search.Search(query);

            string docIds = "";
            totalDocuments = hits.Length();

           
          // Test #1
            Lucene.Net.Search.HitIterator hi = 
(Lucene.Net.Search.HitIterator)hits.Iterator();
            while (hi.MoveNext())
                docIds += 
((Lucene.Net.Search.Hit)hi.Current).GetDocument().GetField("DocumentId").Str
ingValue() 
+ ", ";

          // Test #2
            for (int iCount = 0; iCount < totalDocuments; iCount++)
            {
                Lucene.Net.Documents.Document docHit = hits.Doc(iCount);

                docIds += docHit.GetField("DocumentId").StringValue() + 
", ";
            }