ElasticSearch autocomplete

gistfile1.txt

PUT music
{
  "settings": {
    "index": {
      "analysis": {
        "filter": {
          "autocompleteFilter": {
            "max_shingle_size": "5",
            "min_shingle_size": "2",
            "type": "shingle"
          }
        },
        "analyzer": {
          "autocomplete": {
            "filter": [
              "lowercase",
              "autocompleteFilter"
            ],
            "char_filter": [
              "html_strip"
            ],
            "type": "custom",
            "tokenizer": "standard"
          }
        }
      }
    }
  }
}

PUT music/_mapping/song
{
  "song": {
    "properties": {
      "autocomplete": {
        "type": "string",
        "analyzer": "autocomplete",
        "fielddata": true
      },
      "title": {
        "type": "string",
        "copy_to": [
          "autocomplete"
        ]
      }
    }
  }
}

POST /music/song/1
{
  "title": "Real sold my in call."
}
POST /music/song/2
{
  "title": "Use securing confined his shutters."
}
POST /music/song/3
{
  "title": "Sense child do state to defer mr of forty."
}
POST /music/song/4
{
  "title": "His having within saw become ask passed misery giving. "
}

GET music/song/_search
{
  "size": 0,
  "aggs": {
    "autocomplete": {
      "terms": {
        "field": "autocomplete",
        "order": {
          "_count": "desc"
        },
        "include": {
          "pattern": "c.*"
        }
      }
    }
  },
  "query": {
    "prefix": {
      "autocomplete": {
        "value": "c"
      }
    }
  }
}