You could also use FieldCache.getDocsWithField; it returns a bit set where the bit is set if that document had that field.
Mike McCandless http://blog.mikemccandless.com On Mon, Dec 19, 2011 at 7:32 AM, Trejkaz <trej...@trypticon.org> wrote: > On Mon, Dec 19, 2011 at 9:05 PM, Paul Taylor <paul_t...@fastmail.fm> wrote: >> I was looking for a Query that returns all documents that contain a >> particular field, it doesnt matter what the value of the field is just that >> the document contains the field. > > If you don't care about performance (or if it runs fast enough > already), use a PrefixQuery with "" as the prefix. > > If you care about performance, add a new field which contains the > names of each field in the document, and query on that. > > TX > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
