Thanks Mike,
I've opened https://issues.apache.org/jira/browse/SOLR-2553 for this.
It's exciting to hear a workable implementation might be possible!
On Fri, May 27, 2011 at 6:23 PM, Michael McCandless
luc...@mikemccandless.com wrote:
Can you open a Lucene issue (against the new grouping module) for
this?
I think this is a compelling use case that we should try to support.
In theory, with the general two-pass grouping collector, this should
be possible, but will require three passes, and we also must
generalize the 2nd pass collector to accept arbitrary collectors for
each group (today it's hardwired to sort-by-SortField collectors).
I suspect coupling the single-pass grouping collector (currently still
a patch on LUCENE-3129) with the two-pass collector could also work.
Also, can you describe more details about the two fields you want to
group/collapse by?
Mike
http://blog.mikemccandless.com
On Fri, May 27, 2011 at 6:13 AM, Martijn Laarman mpdre...@gmail.com
wrote:
Hi,
I was wondering if this issue had already been raised.
We currently have a use case where nested field collapsing would be
really
helpful
I.e Collapse on field X then Collapse on Field Y within the groups
returned
by field X
The current behavior of specifying multiple fields seem to be returning
mutiple result sets.
Has this already been feature requested ? Does anybody know of a
workaround
?
Many thanks,
Martijn
