Auto Suggestion in Elasticsearch

[arafath (Mohamed Ärafath)]

I have implemented onlt one word combine auto suggestion in ES. But i couldn't implement three word combine auto search as I mention below screenshot.

ES record output

{
  "took": 7,
  "timed_out": false,
  "_shards": {
    "total": 5,
    "successful": 5,
    "failed": 0
  },
  "hits": {
    "total": 4,
    "max_score": 1,
    "hits": [
      {
        "_index": "test_index",
        "_type": "test_type",
        "_id": "4",
        "_score": 1,
        "_source": {
          "title": "Apple i Phone 4S",
          "description": "some description"
        }
      },
      {
        "_index": "test_index",
        "_type": "test_type",
        "_id": "2",
        "_score": 1,
        "_source": {
          "title": "Apple iPhone I Phone 5 Original",
          "description": "some description"
        }
      },
      {
        "_index": "test_index",
        "_type": "test_type",
        "_id": "1",
        "_score": 1,
        "_source": {
          "title": "Apple iPhone 6+",
          "description": "some description"
        }
      },
      {
        "_index": "test_index",
        "_type": "test_type",
        "_id": "3",
        "_score": 1,
        "_source": {
          "title": "Apple iMac 21.5/2.8GHz/i5/8GB 2016",
          "description": "some description"
        }
      }
    ]
  },
  "aggregations": {
    "autocomplete": {
      "doc_count_error_upper_bound": 0,
      "sum_other_doc_count": 0,
      "buckets": [
        {
          "key": "apple",
          "doc_count": 4
        }
      ]
    }
  }
}

here my ES query.
PUT test_index

{
  "settings": {
    "index": {
      "analysis": {
        "filter": {
          "stemmer": {
            "type": "stemmer",
            "language": "english"
          },
    
          "stopwords": {
            "type": "stop",
            "stopwords": [
              "_english_"
            ]
          }
        },
        "analyzer": {
          "autocomplete": {
            "filter": [
              "lowercase"
            ],
            "char_filter": [
              "html_strip"
            ],
            "type": "custom",
            "tokenizer": "standard"
          },
          "default": {
            "filter": [
              "lowercase",
              "stopwords",
              "stemmer"
            ],
            "char_filter": [
              "html_strip"
            ],
            "type": "custom",
            "tokenizer": "standard"
          }
        }
      }
    }
  },
  "mappings": {
    "test_type": {
      "properties": {
        "autocomplete": {
          "type": "text",
          "analyzer": "autocomplete",
          "fielddata": true
        },
        "description": {
          "type": "text"
        },
        "title": {
          "type": "text",
          "copy_to": [
            "autocomplete"
          ]
        }
      }
    }
  }
}

ES Document

POST /test_index/test_type/1
{
  "title": "Apple iPhone 6+",
  "description": "some description"
}
POST /test_index/test_type/2
{
  "title": "Apple iPhone I Phone 5 Original",
 "description": "some description"
}
POST /test_index/test_type/3
{
  "title": "Apple iMac 21.5/2.8GHz/i5/8GB 2016",
  "description": "some description"
}
POST /test_index/test_type/4
{
  "title": "Apple i Phone 4S",
  "description": "some description"
}
POST /test_index/test_type/5
{
  "title": "Amazon kindle",
  "description": "some description"
}
POST /test_index/test_type/7
{
  "title": "Apploo i Phone 4S",
  "description": "some description"
}