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Posted to java-user@lucene.apache.org by Cam Bazz <ca...@gmail.com> on 2008/08/29 15:21:35 UTC

getting a random doc from index

hello,

how could I possibly get a select a random document out of a document
collection inside a lucene index?

best regards,
-C.B.

Re: getting a random doc from index

Posted by Karl Wettin <ka...@gmail.com>.

29 aug 2008 kl. 15.21 skrev Cam Bazz:

> hello,
>
> how could I possibly get a select a random document out of a document
> collection inside a lucene index?


Something like

public Document randomDoc() {
   int docNo = (int)(new java.util.Random().nextDouble() *  
indexReader.maxDoc());
   return indexReader.isDeleted(docNo) ? randomDoc() :  
indexReader.doc(docNo);
}

?



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