CODEWITHSUNDEEP
solr
jianfeng
jianfeng

Reputation: 2590

How can I sort by realtime score in solr?

Now I have a solr collection: question

question has some field:

id
answer_count
created_at
updated_at

now I have the sort rule:

score = answer_count * 100 - (the hours now to created_at) * 5

then I need to sort by the score desc.

how can i do that because of the score is realtime?

Upvotes: 0

Views: 69

Answers (1)

BlueM
BlueM

Reputation: 3861

The key for this are function queries. Assumed you use EDisMaxQP, you can specify a boost function (bf) with this value:

sub(product(answer_count,100),product(div(ms(NOW,created_at),3600000),5))

However, a function query would influence scoring, but it rather looks like you don’t want any scoring at all and instead a fixed sort order, so I guess it’s rather a case of using this as value of sort:

sub(product(answer_count,100),product(div(ms(NOW,created_at),3600000),5)) desc

Of course, boosting newer documents is in the FAQ and you could have found out this for yourself.

Upvotes: 1

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