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Posted to java-user@lucene.apache.org by Toby Tremayne <To...@lonelyplanet.com.au> on 2004/07/02 00:38:15 UTC
search multiple indexes
Possibly a silly question - but how would I go about searching multiple
indexes using lucene? Do I need to basically repeat the code I use to
search one index for each one, or is there a better way to do it?
Toby
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Re: search multiple indexes
Posted by David Spencer <da...@tropo.com>.
Stefan Groschupf wrote:
>> http://jakarta.apache.org/lucene/docs/api/org/apache/lucene/search/
>> MultiSearcher.html
>>
> 100% Right.
> I personal found code samples more interesting then just java doc.
Good point.
> That why my hint, here the code snippet from nutch:
But - warning - in normal use of Lucene you don't need the Similarity
stuff..
>
> /** Construct given a number of indexed segments. */
> public IndexSearcher(File[] segmentDirs) throws IOException {
> NutchSimilarity sim = new NutchSimilarity();
> Searchable[] searchables = new Searchable[segmentDirs.length];
> segmentNames = new String[segmentDirs.length];
> for (int i = 0; i < segmentDirs.length; i++) {
> org.apache.lucene.search.Searcher searcher =
> new org.apache.lucene.search.IndexSearcher
> (new File(segmentDirs[i], "index").toString());
> searcher.setSimilarity(sim);
> searchables[i] = searcher;
> segmentNames[i] = segmentDirs[i].getName();
> }
> this.luceneSearcher = new MultiSearcher(searchables);
> this.luceneSearcher.setSimilarity(sim);
> }
>
> Kent Beck said: "Monkey see, Monkey do." ;-)
>
> Cheers,
> Stefan
>
> ---------------------------------------------------------------
> enterprise information technology consulting
> open technology: http://www.media-style.com
> open source: http://www.weta-group.net
> open discussion: http://www.text-mining.org
>
>
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Re: search multiple indexes
Posted by Stefan Groschupf <sg...@media-style.com>.
> http://jakarta.apache.org/lucene/docs/api/org/apache/lucene/search/
> MultiSearcher.html
>
100% Right.
I personal found code samples more interesting then just java doc.
That why my hint, here the code snippet from nutch:
/** Construct given a number of indexed segments. */
public IndexSearcher(File[] segmentDirs) throws IOException {
NutchSimilarity sim = new NutchSimilarity();
Searchable[] searchables = new Searchable[segmentDirs.length];
segmentNames = new String[segmentDirs.length];
for (int i = 0; i < segmentDirs.length; i++) {
org.apache.lucene.search.Searcher searcher =
new org.apache.lucene.search.IndexSearcher
(new File(segmentDirs[i], "index").toString());
searcher.setSimilarity(sim);
searchables[i] = searcher;
segmentNames[i] = segmentDirs[i].getName();
}
this.luceneSearcher = new MultiSearcher(searchables);
this.luceneSearcher.setSimilarity(sim);
}
Kent Beck said: "Monkey see, Monkey do." ;-)
Cheers,
Stefan
---------------------------------------------------------------
enterprise information technology consulting
open technology: http://www.media-style.com
open source: http://www.weta-group.net
open discussion: http://www.text-mining.org
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Re: search multiple indexes
Posted by David Spencer <da...@tropo.com>.
Stefan Groschupf wrote:
>> Possibly a silly question - but how would I go about searching multiple
>> indexes using lucene? Do I need to basically repeat the code I use to
>> search one index for each one, or is there a better way to do it?
>
>
> Take a look to the nutch.org sourcecode. It does what you are searching
Isn't the answer closer to home?
http://jakarta.apache.org/lucene/docs/api/org/apache/lucene/search/MultiSearcher.html
> for.
> HTH
> Stefan
> ---------------------------------------------------------------
> enterprise information technology consulting
> open technology: http://www.media-style.com
> open source: http://www.weta-group.net
> open discussion: http://www.text-mining.org
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: lucene-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: lucene-user-help@jakarta.apache.org
>
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Re: search multiple indexes
Posted by Stefan Groschupf <sg...@media-style.com>.
> Possibly a silly question - but how would I go about searching multiple
> indexes using lucene? Do I need to basically repeat the code I use to
> search one index for each one, or is there a better way to do it?
Take a look to the nutch.org sourcecode. It does what you are searching
for.
HTH
Stefan
---------------------------------------------------------------
enterprise information technology consulting
open technology: http://www.media-style.com
open source: http://www.weta-group.net
open discussion: http://www.text-mining.org
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