CODEWITHSUNDEEP
javaelasticsearchelastic-stack
Karthikeyan
Karthikeyan

Reputation: 2001

ElasticSearch - fuzzy search java api results are not proper

I have indexed sample documents in elasticsearch and trying to search using fuzzy query. But am not getting any results when am search by using Java fuzzy query api.

Please find my below mapping script :

PUT productcatalog
 {
    "settings": {
        "analysis": {
            "analyzer": {
                "attr_analyzer": {
                    "type": "custom",
                    "tokenizer": "letter",
                    "char_filter": [
                        "html_strip"
                    ],
                    "filter": ["lowercase", "asciifolding", "stemmer_minimal_english"]
                }
            },
            "filter" : {
                "stemmer_minimal_english" : {
                    "type" : "stemmer",
                    "name" : "minimal_english"
                }
            }
        }
    },
    "mappings": {
        "doc": {
            "properties": {
                "values": {
                    "type": "text",
                    "analyzer": "attr_analyzer"
                },
                "catalog_type": {
                    "type": "text"
                },
                "catalog_id":{
                    "type": "long"
                }
            }
        }
    }
}

Please find my sample data.

PUT productcatalog/doc/1
{
    "catalog_id" : "343",
    "catalog_type" : "series",
    "values" : "Activa Rooftop, valves, VG3000, VG3000FS, butterfly, ball"
}


PUT productcatalog/doc/2
{
    "catalog_id" : "12717",
    "catalog_type" : "product",
    "values" : "Activa Rooftop, valves"
}

Please find my search script :

GET productcatalog/_search
{
    "query": {
        "match" : {
            "values" : {
                "query" : " activa rooftop VG3000",
                "operator" : "and",
                 "boost": 1.0,
                "fuzziness": 2,
                "prefix_length": 0,
                "max_expansions": 100


            }
        }
    }
}

Am getting the below results for the above query :

{
  "took": 239,
  "timed_out": false,
  "_shards": {
    "total": 5,
    "successful": 5,
    "skipped": 0,
    "failed": 0
  },
  "hits": {
    "total": 1,
    "max_score": 0.970927,
    "hits": [
      {
        "_index": "productcatalog",
        "_type": "doc",
        "_id": "1",
        "_score": 0.970927,
        "_source": {
          "catalog_id": "343",
          "catalog_type": "series",
          "values": "Activa Rooftop, valves, VG3000, VG3000FS, butterfly, ball"
        }
      }
    ]
  }
}

But if i use the below Java API for the same fuzzy search am not getting any results out of it.

Please find my below Java API query for fuzzy search :

QueryBuilder qb = QueryBuilders.boolQuery()
               .must(QueryBuilders.fuzzyQuery("values", keyword).boost(1.0f).prefixLength(0).maxExpansions(100));

Update 1

I have tried with the below query

QueryBuilder qb = QueryBuilders.matchQuery(QueryBuilders.fuzzyQuery("values", keyword).boost(1.0f).prefixLength(0).maxExpansions(100));

But am not able to pass QueryBuilders inside matchQuery. Am getting this suggestion while am writing this query The method matchQuery(String, Object) in the type QueryBuilders is not applicable for the arguments (FuzzyQueryBuilder)

Upvotes: 0

Views: 1719

Answers (1)

Amir Masud Zare Bidaki
Amir Masud Zare Bidaki

Reputation: 941

The mentioned java query is not a match query. It's a must query. you should use matchQuery instead of boolQuery().must(QueryBuilders.fuzzyQuery())

Update 1:

fuzzy query is a term query while match query is a full text query.

Also don't forget that in match query the default Operator is or operator which you should change it to and like your dsl query.

Upvotes: 2

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