Implement "more like this"

[rlr]

Please? :)

http://www.elasticsearch.org/guide/reference/api/more-like-this.html

[rlr]

I just realized pyes implements this:

def morelikethis(self, index, doc_type, id, fields, **query_params):
        """
        Execute a "more like this" search query against one or more fields and get back search hits.
        """
        path = self._make_path([index, doc_type, id, '_mlt'])
        query_params['fields'] = ','.join(fields)
        return self._send_request('GET', path, params=query_params)

I am not sure if it is worth wrapping that in elasticutils or not. It doesn't seem like it fits well as part of S() at least.

[willkg]

So, I agree it's not something we'd want to add to S because it's not a chainable transform--it's a separate sort of thing.

However, my big plan is to ditch pyes. So while you could implement this in SUMO directly with pyes, I don't think I want to implement it that way in ElasticUtils.

[rlr]

@willkg Do you have any ideas on how this should be done in EU? I can do it, but I am not sure what the API should look like.

[willkg]

(Talked with @rlr directly a few times between then and now.)

The new plan is to implement an MLT class that's at the same level as S and takes an S which it uses to derive a bunch of information from. And it'll also take an id and a list of fields.

[rlr]

Fixed ^