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Posted to java-user@lucene.apache.org by Heiko <he...@giata.de> on 2008/08/25 17:29:22 UTC
FilteredQuery
Hi All,
i would like to use the FilteredQuery to filter my search results with
the occurrence or absence of certain ids.
Example A:
query -> text:"albert einstein"
filterQuery -> doctype:letter
That's ok. I am getting the expected results. But i got no results, if
i filter with the absence of an id.
Example B:
query -> text:"albert einstein"
filterQuery -> NOT doctype:article
However following concatenation of filterQuery and query leads to the
expected result.
Example C:
query -> text:"albert einstein"
filterQuery -> text:"albert einstein" NOT doctype:article
I am confused that Example B does not worked. It is bug?
I am using Lucene 2.3.2 and the following code fragement:
Query query;
Query filterQuery;
...
Filter filter = new CachingWrapperFilter(new
QueryWrapperFilter(filterQuery));
FilteredQuery filteredQuery = new FilteredQuery(query, filter);
Hits hits = searcher.search(filteredQuery);
...
Thanks,
Heiko Müller
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