Highlighting

• Due to the elastic search text analyzers it is not always obvious why document was a match

• Highlights search result on one or more document fields:

  curl -XPOST 'localhost:9200/orders/orders/_search?pretty=true' \
    -H 'content-type: application/json' \
    -d '
  {
    "query" : {
        "match": { "id": "1" }
    },
    "highlight" : {
        "fields" : {
            "id" : {}
        }
    }
  }'

• Expected result:

  {
  ...
    "hits" : {
        "total" : 1,
        "max_score" : 0.71231794,
        "hits" : [ {
          "_index" : "orders",
          "_type" : "orders",
          "_id" : "1",
          "_score" : 0.71231794,
          "_source" : {
            "id" : "1",
            "placedOn" : "2016-10-17T13:03:30.830Z"
          },
          "highlight" : {
            "id" : [ "<em>1</em>" ]
          }
      } ]
    }
  }