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From Grant Ingersoll <gsing...@apache.org>
Subject Re: Hits.
Date Fri, 07 Mar 2008 12:10:37 GMT
You sure can.  Or you can use the SetBasedFieldSelector that already  
exists in o.a.lucene.document.

-Grant

On Mar 7, 2008, at 5:26 AM, Sergey Kabashnyuk wrote:

> Hi.
> I have a question about retrieving information.
> Lets say I have an index which contents a millions of documents with  
> 2-3 small fields an a 10 large fields.
> Then I run a query which returns me a 1000 of hits.  But I am  
> interested only  one small field, and I don't want to load other  
> fields.
>
> Can I do something like what?
>
>      int id = hits.id(n);
>
>      FieldSelector fieldSelector = new FieldSelector() {
>        public FieldSelectorResult accept(String fieldName) {
>          if(fieldName.equals(field))
>            return FieldSelectorResult.LOAD_AND_BREAK;
>          return FieldSelectorResult.NO_LOAD;
>        }
>      };
>
>      Document doc = reader.document(id, fieldSelector);
>      if(doc == null)
>        throw new IOException("Document with id "+id+" not found");
>      return doc.get(field);
>
> n from 0 to hits.length().
>
> Best regards,
> Sergey
>
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--------------------------
Grant Ingersoll
http://www.lucenebootcamp.com
Next Training: April 7, 2008 at ApacheCon Europe in Amsterdam

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