Re: how to shuffle the result while follow some priority rules at the same time

[Chris Hostetter <ho...@fucit.org>]

: I want to implement that effect that the results had better differ from each
: other in one page, but I want to show some results first like those contains
: more attributes.

there is a RandomSortField that you can use as a "tie breaker" when all 
other fields are equal.  info baout using that can be found in the example 
schema.xml

you could also test drive the FieldCollapsing patch (in Jira, not yet 
committed) which would let you "collapse" the results based on a common 
field name (ie: if the song title name was identical)

: pages. My current solr query is:
: 
: ?q=ne+yo&qf=artist&defType=dismax&sort=lyric%20desc,links%20desc&start=0&rows=20&indent=on
: So the results will shows some same song names together cause their
: scores are totally the same.
: How to modify to support random, hash effect?

you aren't using "score" in your sort at all -- so score isn't influencing 
your result order at all.  

assuming "lyric" is a boolean indicating you have lyrics, you might wnat 
something like "sort=lyric+desc,+score+desc,+links+desc" ... so it will 
make sure things with lyrics appear first, but all songs with lyrics will 
be in score order; if and only if two docs have identicle scores (and both 
have lyrics) will it then do a secondary sort on "links"

: BTW: I find the sorting with multi conditions does not work well. I
: want to sort the second attribute
: (links desc)based on the first condition. ( lyric desc) . The results
: with lyric shows really in
: the front, but the links attribute seems not in order.

you haven't explained what "links" is so it's hard to guess what might be 
happening here.  if you give contrete examples (ie: show us your schema, 
show us a real query, show us real results) then people might be able to 
help you.



-Hoss