Hi ,
Thanks for your help.
So do I have to do:
public Scorer scorer(IndexReader reader) throws IOException {
SolrIndexReader solrReader = (SolrIndexReader) reader;
int offset = solrReader.getBase() ;
Or is it a bit more complex than that?
Jerome.
2009/8/20 Mark Miller <markrmil...@gmail.com>:
> Jérôme Etévé wrote:
>> Hi all,
>>
>> I'm kind of struggling with a customized lucene.Scorer of mine, since
>> I use solr 1.4.
>>
>> Here's the problem:
>>
>> I wrote a DocSetQuery which inherit from a lucene.Query. This query
>> is a decorator for a lucene.Query that filters out the documents which
>> are not in a given set of predefined documents (a solr.DocSet which I
>> call docset ).
>>
>> So In my Weight / Scorer, I implemented the method nextDoc like that:
>>
>> public int nextDoc() throws IOException {
>> do {
>> if (decoScorer.nextDoc() == NO_MORE_DOCS) {
>> return NO_MORE_DOCS;
>> }
>> // DO THIS UNTIL the doc is in the docset
>> } while (!docset.exists(decoScorer.docID()));
>> return decoScorer.docID();
>> }
>>
>> The decoScorer here is the decorated scorer.
>>
>> My problem here is that in docset, there are 'absolute' documents IDs,
>> but now solr uses a number of sub readers each with a kind of offset,
>> so decoScorer.docID() gives 'relative' document ID . Because of this,
>> I happen to test relative document IDs against a set of absolute
>> docIDs.
>>
>> So my DocSetQuery does not work anymore. The solution would be I think
>> to have a way of getting the offset of the SolrReader being used in
>> the context to be able to do docset.exists(decoScorer.docID() +
>> offset) .
>>
>> But how can I get this offset?
>> The scorer is built with a lucene.IndexReader in parameter:
>> public Scorer scorer(IndexReader reader) .
>>
>> Within solr, this IndexReader happens to be an instance of
>> SolrIndexReader so I though maybe I could downcast reader to a
>> SolrIndexReader to be able to call the offset related methods on it
>> (getBase() etc...).
>>
> It may not feel super clean, but it should be fine - Solr always uses a
> SolrIndexSearcher which always wraps all of the IndexReaders in
> SolrIndexReader. I'm fairly sure anyway ;)
>
> By getting the base of the subreader wihtin the top reader, you can add
> it to the doc id to get the top reader doc id.
>> I feel quite unconfortable with this solution since my DocSetQuery
>> inherits from a lucene thing, so it would be quite odd to downcast
>> something to a solr class inside it, plus I didn't really figured out
>> how to use those offset related methods.
>>
>> Thanks for your help!
>>
>> All the best!
>>
>> Jerome Eteve.
>>
>>
>
>
> --
> - Mark
>
> http://www.lucidimagination.com
>
>
>
>
--
Jerome Eteve.
Chat with me live at http://www.eteve.net
jer...@eteve.net
