You have run into some stuff that has been somewhat rolled back in Lucene.
QueryWieght, and the methods it brought have been reverted.
Shortly (when Solr trunk updates Lucene), Solr will go back to just
createWeight and weight.
The main change that will be left is that Weight will be an abstract
class rather than an interface.
--
- Mark
http://www.lucidimagination.com
Jérôme Etévé wrote:
Hi all,
I have a custom search component which uses a query I wrote.
Basically, this Query (called DocSetQuery) is a Query decorator that
skips any document which is not in a given document set. My code used
to work perfectly in solr 1.3 but in solr 1.4, it seems that my
DocSetQuery has lost all its power.
I noticed that to be compliant with solr 1.4 trunk and the lucene it
contains, I should implement two new methods:
createQueryWeight
and
queryWeight
So I did. It was very easy, because basically it's only about re-using
the deprecated Weight createWeight and wrapping the result with a
QueryWeightWrapper.
So now I believe my DocSetQuery complies with the new
solr1.4/lucene2.9-dev api. And I've got those methods:
public QueryWeight queryWeight(Searcher searcher) throws IOException {
return createQueryWeight(searcher);
}
public QueryWeight createQueryWeight(Searcher searcher) throws
IOException {
log.info("[sponsoring] creating QueryWeight calling createQueryWeight ");
return new QueryWeightWrapper(createWeight(searcher));
}
public Weight weight(Searcher searcher) throws IOException {
return createWeight(searcher);
}
//and of course
protected Weight createWeight(final Searcher searcher) throws
IOException {
log.info("[sponsoring] creating weight with DoCset " + docset.size());
...
}
I'm then using my DocSetQuery in my custom SearchComponent like that:
Query limitedQuery = new DocSetQuery(decoratedQuery , ... );
Then I simply perform a search by doing
rb.req.getSearcher().search(limitedQuery, myCollector);
My problem is neither of createQueryWeight or createWeight is called
by the solr Searcher, and I'm wondering what I did wrong.
Should I build the Weight myself and call the search method which
accepts a Weight object?
This is quite confusing because:
- it used to work perfectly in solr 1.3
- in the nightly build version of lucene API, those new methods
createQueryWeight and queryWeight have disappeared but with the lucene
solr1.4trunk uses, they exists plus the old ones ( createWeight and
weight) are deprecated.
Thanks for your help.
Jerome Eteve.
