Query DSL: Function score without function throws NPE

[clintongormley]

PUT /t/test/1
{
  "text": "baseball bats"
}

GET /t/test/_search?explain
{
  "query": {
    "function_score": {
      "score_mode": "sum",
      "boost_mode": "replace",
      "functions": [
        {
          "filter": {
            "term": {
              "text": "baseball"
            }
          }
        }
      ]
    }
  }
}

Throws NPE. With a function (eg boost_factor) it doesn't:

GET /t/test/_search?explain
{
  "query": {
    "function_score": {
      "score_mode": "sum",
      "boost_mode": "replace",
      "functions": [
        {
          "filter": {
            "term": {
              "text": "baseball"
            }
          }
        },
        "boost_factor": 1
      ]
    }
  }
}

[s1monw]

I guess we should throw a parse exception here no?

[s1monw]

ah @brwe has is already assigned... I almost took it... :)