CODEWITHSUNDEEP
jsonelasticsearch
Daniel Buckle
Daniel Buckle

Reputation: 628

Elasticsearch: Expected field name but got START_OBJECT

I've been trying to run the following query, but every time I run it I receive the following error:

nested: ElasticsearchParseException[Expected field name but got START_OBJECT \"field_value_factor\"]; }]","status":400

Here is the query:

{
  "query": {
    "function_score": {
      "query": {
        "bool": {
          "should": [{
            "match": {
              "thread_name": "parenting"
            }
          }, {
            "nested": {
              "path": "messages",
              "query": {
                "bool": {
                  "should": [{
                    "match": {
                      "messages.message_text": "parenting"
                    }
                  }]
                }
              },
              "inner_hits": {}
            }
          }]
        }
      }
    },
    "field_value_factor": {
      "field": "thread_view"
    }
  }
}

Upvotes: 3

Views: 7842

Answers (2)

Julien C.
Julien C.

Reputation: 966

You have an error in your query, field_value_factor is n attribute of function_score:

{
  "query": {
    "function_score": {
      "query": {
        "bool": {
          "should": [{
            "match": {
              "thread_name": "parenting"
            }
          }, {
            "nested": {
              "path": "messages",
              "query": {
                "bool": {
                  "should": [{
                    "match": {
                      "messages.message_text": "parenting"
                    }
                  }]
                }
              },
              "inner_hits": {}
            }
          }]
        }
      },
      "field_value_factor": {
        "field": "thread_view"
      }
    }
  }
}

since you have a single function, you don't need to nest this into "functions"

Upvotes: 0

Val
Val

Reputation: 217304

Your field_value_factor function is misplaced. it should be nested within the functions property. Try this query instead

{
  "query": {
    "function_score": {
      "functions": [
        {
          "field_value_factor": {
            "field": "thread_view"
          }
        }
      ],
      "query": {
        "bool": {
          "should": [
            {
              "match": {
                "thread_name": "parenting"
              }
            },
            {
              "nested": {
                "path": "messages",
                "query": {
                  "bool": {
                    "should": [
                      {
                        "match": {
                          "messages.message_text": "parenting"
                        }
                      }
                    ]
                  }
                },
                "inner_hits": {}
              }
            }
          ]
        }
      }
    }
  }
}

Upvotes: 2

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