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From André Maldonado <andre.maldon...@gmail.com>
Subject Re: Simple question
Date Fri, 30 Oct 2009 19:47:22 GMT
Hi again Franklin.

Sorry, but didn't work. I'm using Lucene.net 2.3 and doing exactly what you
said, I'm getting this error:

System.FormatException: Input string was not in correct format.
   em System.Number.StringToNumber(String str, NumberStyles options,
NumberBuffer& number, NumberFormatInfo info, Boolean parseDecimal)
   em System.Number.ParseInt32(String s, NumberStyles style,
NumberFormatInfo info)
   em
Lucene.Net.Search.FieldCacheImpl.AnonymousClassIntParser.ParseInt(String
value_Renamed)
   em
Lucene.Net.Search.FieldCacheImpl.AnonymousClassCache2.CreateValue(IndexReader
reader, Object entryKey)
   em Lucene.Net.Search.FieldCacheImpl.Cache.Get(IndexReader reader, Object
key)
   em Lucene.Net.Search.FieldCacheImpl.GetInts(IndexReader reader, String
field, IntParser parser)
   em Lucene.Net.Search.FieldCacheImpl.GetInts(IndexReader reader, String
field)
   em Lucene.Net.Search.FieldSortedHitQueue.ComparatorInt(IndexReader
reader, String fieldname)
   em
Lucene.Net.Search.FieldSortedHitQueue.AnonymousClassCache.CreateValue(IndexReader
reader, Object entryKey)
   em Lucene.Net.Search.FieldCacheImpl.Cache.Get(IndexReader reader, Object
key)
   em Lucene.Net.Search.FieldSortedHitQueue.GetCachedComparator(IndexReader
reader, String field, Int32 type, CultureInfo locale, SortComparatorSource
factory)
   em Lucene.Net.Search.FieldSortedHitQueue..ctor(IndexReader reader,
SortField[] fields, Int32 size)
   em Lucene.Net.Search.IndexSearcher.Search(Weight weight, Filter filter,
Int32 nDocs, Sort sort)
   em Lucene.Net.Search.Hits.GetMoreDocs(Int32 min)
   em Lucene.Net.Search.Hits..ctor(Searcher s, Query q, Filter f, Sort o)
   em Lucene.Net.Search.Searcher.Search(Query query, Sort sort)
   em SearcherLibrary.Searcher.Search(String[] fields, String orderBy, Int32
type, Object analyzer) na
c:\Maldonado\projetos\BuscaBlog\Indexer\SearcherLibrary\Searcher.cs:linha
252
   em SearcherLibrary.Searcher.Search(String orderBy, sortType type, Int32
hitCount) na
c:\Maldonado\projetos\BuscaBlog\Indexer\SearcherLibrary\Searcher.cs:linha
313
   em IndexerConsole.Program.Main(String[] args) na
c:\Maldonado\projetos\BuscaBlog\Indexer\IndexerConsole\Program.cs:linha 21

Any idea?

Thank's

"Então aproximaram-se os que estavam no barco, e adoraram-no, dizendo: És
verdadeiramente o Filho de Deus." (Mateus 14:33)


On Fri, Oct 30, 2009 at 16:06, Franklin Simmons <fsimmons@sccmediaserver.com
> wrote:

> I did it again, think I'll hang it up for the day.  The correct query class
> name is 'MatchAllDocsQuery'.
>
> -----Original Message-----
> From: Franklin Simmons [mailto:fsimmons@sccmediaserver.com]
> Sent: Friday, October 30, 2009 2:06 PM
> To: lucene-net-user@incubator.apache.org
> Subject: RE: Simple question
>
> Oops, I'm not being very helpful.
>
> Use the MatchAllDocumentsQuery class:
>
> Searcher searcher = new IndexSearcher(directory);
>
> Sort = new Sort(new SortField("another_field", SortField.AUTO, false));
>
> Hits hits = searcher.search(new MatchAllDocumentsQuery(),sort);
>
>
> However, that may be a lot of processing.  You may want to tune the query
> in a way to minimize overhead; someone else in the list may suggest a better
> strategy.
>
>
> -----Original Message-----
> From: Franklin Simmons [mailto:fsimmons@sccmediaserver.com]
> Sent: Friday, October 30, 2009 2:01 PM
> To: lucene-net-user@incubator.apache.org
> Subject: RE: Simple question
>
> Hi André,
>
> In this case you simply sort on the field. This may suffice:
>
> Searcher searcher = new IndexSearcher(directory);
>
> Sort = new Sort(new SortField("another_field", SortField.AUTO, false));
>
> Hits hits = searcher.search(query,sort);
>
>
> You can limit the number of hits (e.g. to 5), but I won't get into that
> here.
>
>
> Beyond SortField.AUTO, take a look at the SortField class to see specific
> field types - the most interesting being SortField.CUSTOM.
>
>
> -----Original Message-----
> From: André Maldonado [mailto:andre.maldonado@gmail.com]
> Sent: Friday, October 30, 2009 1:46 PM
> To: lucene-net-user@incubator.apache.org
> Subject: Re: Simple question
>
> Hi Franklin.
>
> Wich query I use for this search (variable: query)? I don't want any query,
> I just want the TOP 5 documents ordered by a field.
>
> Thank's
>
> "Então aproximaram-se os que estavam no barco, e adoraram-no, dizendo: És
> verdadeiramente o Filho de Deus." (Mateus 14:33)
>
>
> On Fri, Oct 30, 2009 at 15:03, Franklin Simmons <
> fsimmons@sccmediaserver.com
> > wrote:
>
> > You can sort a search by multiple fields.  I think you could try
> something
> > like this:
> >
> > Searcher searcher = new IndexSearcher(directory);
> > Sort = new Sort(new SortField[] { SortField.FIELD_SCORE, new
> > SortField("another_field") };
> > Hits hits = searcher.search(query,sort);
> >
> >
> > -----Original Message-----
> > From: André Maldonado [mailto:andre.maldonado@gmail.com]
> > Sent: Friday, October 30, 2009 12:57 PM
> > To: lucene-net-user@incubator.apache.org
> > Subject: Simple question
> >
> > Hi.
> >
> > This can be a simple question, but I can't figure out the solution.
> >
> > I need to search my index in something like "SELECT TOP 5 ... ORDER BY
> > another_field". But this is an empty query because I want to search in
> all
> > documents.
> >
> > How can I do it?
> >
> > Thank's
> >
>

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