Is it possible to apply a solr document int field value as boost value if a specific field is matched?

Question

Ex. 

\"docs\": [
{
\"id\": \"f37914\",
\"index_id\": \"some_index\",
\"field_1\": [
   {
      \"Some value\",
      \"boost\": 20.
   }
 ]
},
]

If \'

Answer 1

Boost what? the document? the specific field? you can do any of them. Anyway the way to do it is to user Function Queries: https://lucene.apache.org/solr/guide/6_6/function-queries.html#FunctionQueries-AvailableFunctions

For example if you want to boost the document (and assuming if the value doesn't match then the score is 0) then you can do something like that:

q:_val_:"if(query($q1), field(boost), 0)"&q1=field_1:"Some Value"

_val_ is just a hook into Solr function query, query returns true if q1 matches, field is a simple function that just return the value of the field it self and if allows us to join the two together.