Elasticsearch java API fuzzy search with prefix_length

Question

I hope to perform this query using elastic search using Java API. For the fuzzy query, how do I get the "prefix_length" argument?

Query:

{"query":{"bool":{"should":[

    {"fuzzy":{"object.name":{"value":"appl", "max_expansions":"1", "prefix_length" : 3}}},

    {"prefix":{"object.name":"appl"}},

    {"term":{"object.name":"appl"}}

]}}}

Java API:

QueryBuilder result = QueryBuilders.boolQuery()
            .minimumNumberShouldMatch(1)
            .should(QueryBuilders.fuzzyQuery(Company.FIELD_NAME, query)) ...

The documentation here doesn't explain how to get the "prefix_length" argument. Can someone explain? Thanks!

Answer 1

Aha. Can add like this:

should(QueryBuilders.fuzzyQuery(Company.FIELD_NAME, query).maxExpansions(1).prefixLength(query.length() - 1)