Use query boosting instead of sorting functions about api

[hkrishna]

Using function_score inside the query instead of sorting functions:

{
   "query": {
      "function_score": {
         "query": {"bool": {
            "must": [
               {
                   "match": {
                      "name.default": "portland tennessee"
                   }
               }
            ], 
            "should": [
                { "match": {
                   "admin0": "maine"
                }},
                { "match": {
                   "admin1": "portland tennessee"
                }},
                { "match": {
                   "alpha3": "USA"
                }},
                {
                  "match": {
                    "admin1_abbr": ""
                  }
                }

            ]
          }
         },

         "boost": 1,
         "functions": [
            {
                "script_score": {
                    "file": "population",
                    "lang": "groovy"
                }
            },
            {
                "script_score": {
                  "file": "weights",
                  "params": {"weights":{
                      "geoname": 0,
                      "address": 4, 
                      "osmnode": 6,
                      "osmway": 6,
                      "poi-address": 8, 
                      "neighborhood": 10,
                      "local_admin": 12,
                      "locality": 12,
                      "admin2": 12,
                      "admin1": 14,
                      "admin0": 2
                    }}, 
                  "lang": "groovy"
                }
            }
        ]
      }
   },
   "size": 10,
   "sort": [
      "_score"
   ],
   "track_scores": true
}

This gives us the ability to actually affect the scoring based on population, popularity etc. With sorting functions we were using these function scores merely as a tie breaker.

[orangejulius]

We do this now! ⛵

[hkrishna]

👍