如何从elasticsearch返回具有该值的字段

Question

I have a document like this

{
    "field_1": ["val_1", "val_2"],
    "field_2": ["val_21", "val_14"],
    "field_3": ["val_6", "val_9"]
}

If I search for "val_1", I want to get "field_1" and if I search for "val_9" I want to get "field_3" from elasticsearch response. So to know which field the value matched in.

How can i do that in elasticsearch.

I am using:

Version: 2.3.2, Build: b9e4a6a/2016-04-21T16:03:47Z, JVM: 1.8.0_91

Answer 1

POST /www/test/1
{"field_1":["val_1","val_2"],"field_2":["val_21","val_14"],"field_3":["val_6","val_9"]}

GET /www/test/_search
{
  "query": {
    "multi_match": {
      "query": "val_1",
      "fields": ["field_*"]
    }
  },
  "highlight": {
    "fields": {
      "field_*":{}
    }
  }
}

And for this data and query, this would be the output:

  "hits": [
     {
        "_index": "www",
        "_type": "test",
        "_id": "1",
        "_score": 0.058849156,
        "_source": {
           "field_1": [
              "val_1",
              "val_2"
           ],
           "field_2": [
              "val_21",
              "val_14"
           ],
           "field_3": [
              "val_6",
              "val_9"
           ]
        },
        "highlight": {
           "field_1": [
              "<em>val_1</em>"
           ]
        }
     }
  ]

So, for highlighting you get a separate section - highlight - where, depending on the queries you get the highlighted value in a certain field.