Hi
I have a muti-valued field, containing usernames, that I want to facet on, but
I only want facets on a sub-set of those usernames.
For example, if I have these docs
doc1: { field1: [user1, user2, user4] }
doc2: { field1: [user1, user3, user5], }
doc3: { field1: [user3, user4, user6], }
I'd like to be facet on field1 so that I get the following results:
user1: 2
user2: 1
I tried having a query limiting the usernames and a facet on the usernames
field, like so:
{
"query": "field1:( user1 OR user2)",
"facet": { "specialUsers" : {"type": "terms", "field" : "field1"}}
}
but that returns facets for each of the values in (including user3, user4 and
user5).
The unique values for usernames, across all documents in our index, could be in
millions.
I tried the `query` facet but that would mean having to add a `query` facet for
each username to have a bucket on.
I also see that the `prefix` option does something similar to what we want -
which is slotting a bucket for each username that matched the criteria(prefix).
In our case what's required is like a whitelist of field values for which the
facets are to be included. We're looking at a custom faceting solution for this.
With what’s available, is it possible to extend the JSON facets so that I can
register a new custom facet processor? Or is there another way to do this?
Thanks,
Deepak
