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From Trevor Watson <twat...@datassimilate.com>
Subject Re: Alternative to looping through Hits
Date Fri, 02 Oct 2009 15:02:15 GMT
I had done StringBuilder.Append for the HitsIterator.  It actually 
increased the time by about 5 seconds.  It might be just computer issue 
at that time, however, it didn't seem to be beneficial time-wise.



Gerald Pape wrote:
> Hi, 
>
> would start with using StringBuilder instead of string, maybe this gives 
> some performance boost.
>
>
>
>
>
> From:   Trevor Watson <twatson@datassimilate.com>
> To:     lucene-net-user@incubator.apache.org
> Date:   02.10.2009 16:42
> 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").StringValue()

>
> + ", ";
>
>           // Test #2
>             for (int iCount = 0; iCount < totalDocuments; iCount++)
>             {
>                 Lucene.Net.Documents.Document docHit = hits.Doc(iCount);
>
>                 docIds += docHit.GetField("DocumentId").StringValue() + 
> ", ";
>             }
>
>
>
>
>
>
>   


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