Similarity in Elasticsearch properties in Springframework

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I need to use property "similarity" in my elasticsearch index, but cannot find the property in the Field annotation of Springframework. It seems, the Springframework Elasticsearch library don't have that. Do I need to use another library or are there simple ways to do that? Can you recommend a library or a way?

elasticsearch spring-boot java
1 Answers

You can use the Setting annotation and define your settings in a separate file, with the appropriate configuration for similarity.

To perform this, just add @Setting(settingPath = "/path/to/settings.json") to your index class, where you have @Document annotation.

e.g.

@Setting(settingPath = "/path/to/settings.json")
@Document(indexName = "indexName")
public class IndexClass {

    @Id
    private String id;
    private String name;

    // getters and setters
}

And your settings.json should look like :

"index": {
  "similarity": {
    "my_similarity": {
      "type": "DFR",
      "basic_model": "g",
      "after_effect": "l",
      "normalization": "h2",
      "normalization.h2.c": "3.0"
    }
  }
}

And you can find more in the documentation.

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