I am trying to implement oracle's aggregation like SQL's ( e.g. SUM(col3) where col1='foo' and col2='bar' ) using lucene's payload feature.
I can add the integer_value ( of col3 ) as a payload to my searchable fields ( col1 and col2 ). I can probably extend the DefaultSImilarity's scorePayload() to compute the aggregated value. But was wondering if I can access the payload values from HitColelctor.collect() as I really dont need to do any score computation. I just want the sum of col3's values for all matching documents. What is a good approach to achieve the above? The use case is slightly different and more like RDBMS, but still ( methinks ) lucene seems to the best tool available to do these kind of computation in a large scale. -Thanks, Prasen --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
