lucene-java-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Amin Mohammed-Coleman <ami...@gmail.com>
Subject Re: Faceted Search using Lucene
Date Tue, 24 Feb 2009 20:48:20 GMT
The reason for the indexreader.reopen is because I have a webapp which
enables users to upload files and then search for the documents.  If I don't
reopen i'm concerned that the facet hit counter won't be updated.

On Tue, Feb 24, 2009 at 8:32 PM, Amin Mohammed-Coleman <aminmc@gmail.com>wrote:

> Hi
> I have been able to get the code working for my scenario, however I have a
> question and I was wondering if I could get some help.  I have a list of
> IndexSearchers which are used in a MultiSearcher class.  I use the
> indexsearchers to get each indexreader and put them into a MultiIndexReader.
>
> IndexReader[] readers = new IndexReader[searchables.length];
>
> for (int i =0 ; i < searchables.length;i++) {
>
> IndexSearcher indexSearcher = (IndexSearcher)searchables[i];
>
> readers[i] = indexSearcher.getIndexReader();
>
>     IndexReader newReader = readers[i].reopen();
>
> if (newReader != readers[i]) {
>
> readers[i].close();
>
> }
>
> readers[i] = newReader;
>
>
>
> }
>
>  multiReader = new MultiReader(readers);
>
> OpenBitSetFacetHitCounter facetHitCounter = newOpenBitSetFacetHitCounter();
>
> IndexSearcher indexSearcher = new IndexSearcher(multiReader);
>
>
> I then use the indexseacher to do the facet stuff.  I end the code with
> closing the multireader.  This is causing problems in another method where I
> do some other search as the indexreaders are closed.  Is it ok to not close
> the multiindexreader or should I do some additional checks in the other
> method to see if the indexreader is closed?
>
>
>
> Cheers
>
>
> P.S. Hope that made sense...!
>
>
> On Mon, Feb 23, 2009 at 7:20 AM, Amin Mohammed-Coleman <aminmc@gmail.com>wrote:
>
>> Hi
>>
>> Thanks just what I needed!
>>
>> Cheers
>> Amin
>>
>>
>> On 22 Feb 2009, at 16:11, Marcelo Ochoa <marcelo.ochoa@gmail.com> wrote:
>>
>>  Hi Amin:
>>>  Please take a look a this blog post:
>>>
>>> http://sujitpal.blogspot.com/2007/04/lucene-search-within-search-with.html
>>>  Best regards, Marcelo.
>>>
>>> On Sun, Feb 22, 2009 at 1:18 PM, Amin Mohammed-Coleman <aminmc@gmail.com>
>>> wrote:
>>>
>>>> Hi
>>>>
>>>> Sorry to re send this email but I was wondering if I could get some
>>>> advice
>>>> on this.
>>>>
>>>> Cheers
>>>>
>>>> Amin
>>>>
>>>> On 16 Feb 2009, at 20:37, Amin Mohammed-Coleman <aminmc@gmail.com>
>>>> wrote:
>>>>
>>>>  Hi
>>>>>
>>>>> I am looking at building a faceted search using Lucene.  I know that
>>>>> Solr
>>>>> comes with this built in, however I would like to try this by myself
>>>>> (something to add to my CV!).  I have been looking around and I found
>>>>> that
>>>>> you can use the IndexReader and use TermVectors.  This looks ok but I'm
>>>>> not
>>>>> sure how to filter the results so that a particular user can only see
a
>>>>> subset of results.  The next option I was looking at was something like
>>>>>
>>>>> Term term1 = new Term("brand", "ford");
>>>>> Term term2 = new Term("brand", "vw");
>>>>> Term[] termsArray = new Term[] { term1, term2 };un
>>>>> int[] docFreqs = indexSearcher.docFreqs(termsArray);
>>>>>
>>>>> The only problem here is that I have to provide the brand type each
>>>>> time a
>>>>> new brand is created.  Again I'm not sure how I can filter the results
>>>>> here.
>>>>> It may be that I'm using the wrong api methods to do this.
>>>>>
>>>>> I would be grateful if I could get some advice on this.
>>>>>
>>>>>
>>>>> Cheers
>>>>> Amin
>>>>>
>>>>> P.S.  I am basically trying to do something that displays the following
>>>>>
>>>>> Personal Contact (23) Business Contact (45) and so on..
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>
>>>
>>> --
>>> Marcelo F. Ochoa
>>> http://marceloochoa.blogspot.com/
>>> http://marcelo.ochoa.googlepages.com/home
>>> ______________
>>> Want to integrate Lucene and Oracle?
>>>
>>> http://marceloochoa.blogspot.com/2007/09/running-lucene-inside-your-oracle-jvm.html
>>> Is Oracle 11g REST ready?
>>> http://marceloochoa.blogspot.com/2008/02/is-oracle-11g-rest-ready.html
>>>
>>> ---------------------------------------------------------------------
>>> To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
>>> For additional commands, e-mail: java-user-help@lucene.apache.org
>>>
>>>
>

Mime
  • Unnamed multipart/alternative (inline, None, 0 bytes)
View raw message