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From "Ralf Heyde" <ralf.he...@gmx.de>
Subject Re: Facetting inside a custom component
Date Thu, 06 Sep 2012 12:28:18 GMT
Hi,

just found a solution, but you have to know, what you want to count:

try {
 final SolrIndexSearcher s = rb.req.getSearcher();
 final SolrQueryParser qp = new SolrQueryParser(rb.req.getSchema(), null);
 final String queryString = "entity_type:RELEASE";
 final Query q = qp.parse(queryString);
 final DocListAndSet results = s.getDocListAndSet(q, (List<Query>) null, (Sort) null,
rb.req.getStart(), rb.req.getLimit());
 final NamedList counts = new NamedList();
 for (String fc : ImmutableSet.of("entity_type:RELEASE", "entity_type:PRODUCT_NAME")) {
   counts.add(fc, s.numDocs(qp.parse(fc), results.docSet));
 }
 // in counts you have your facet-counts
} 
catch (ParseException pe) {
 pe.printStackTrace();
}


-------- Original-Nachricht --------
> Datum: Thu, 06 Sep 2012 13:58:29 +0200
> Von: "Ralf Heyde" <ralf.heyde@gmx.de>
> An: solr-user@lucene.apache.org
> Betreff: Facetting inside a custom component

> Hello,
> 
> i'm currently devoloping a custom component in Solr.
> This component works fine. The problem I have is, I only have an access to
> the searcher which gives me the option to fire e.g. BooleanQueries. 
> 
> This searcher gives me a result, which I have to iterate to calculate
> informations which could be delivered by solr facets out of the box.
> 
> The problem i'm facing with is, that there is no option for facetting.
> There is an example on the Lucene here: 
> http://lucene.apache.org/core/4_0_0-BETA/facet/org/apache/lucene/facet/doc-files/userguide.html
> 
> The problem is, that i have no taxonomyDir / i dont know, where to get it.
> TaxonomyReader taxo = new DirectoryTaxonomyReader(taxoDir);
> 
> Does anybody have an idea, how to gather facet information?
> 
> Thanks in advance,
> 
> Ralf

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