search for: segmentreader

Hi, I have an index where each document contains an untokenized ''url'' field. I would like to query the index for the most popular urls. In SQL I would do this via a Group By clause. Is there anything in Ferret that will do something similar? I found this discussion that proposed a solution involving TermEnums:

Hi there, Sorry if this has come up before, but I couldn''t see it obviously addressed anywhere. There are a few methods in IndexReader that raise NotImplementedErrors. I''m specifically interested in get_term_vector, but there are a number of others. Is there anything specific holding these back, or would patches to implement them be accepted? Thanks, -- Alex

...::index::TermInfosReader::get (this=<optimized out>, term=term at entry=0x7945d5822dc0) at /var/tmp/portage/dev-cpp/clucene-2.3.3.4-r6/work/clucene-core-2.3.3.4/src/core/CLucene/index/TermInfosReader.cpp:246 enumerator = <optimized out> #9 0x000063e7edab9071 in lucene::index::SegmentReader::docFreq (this=0x19085500ae0, t=0x7945d5822dc0) at /var/tmp/portage/dev-cpp/clucene-2.3.3.4-r6/work/clucene-core-2.3.3.4/src/core/CLucene/index/SegmentReader.cpp:518 ti = <optimized out> #10 0x000063e7edae2620 in lucene::search::Similarity::idf (this=0x19085526e60, term=0x7945d5822...