CODEWITHSUNDEEP
elasticsearchspring-data-elasticsearch
user681055
user681055

Reputation: 59

Set different _id and id fields with Spring Data Elasticsearch

I understand that Spring Data maps by default id field to the elastic _id. Is this some way to override this behavior? I have a document with id field that came from outside and I don't want to change its name because of backward compatibility. But I have to support the scenario when I have multiple docs with the same id (it's not unique field) So I want to let elastic to generate _id field to be unique and set my own id Any ideas on how to do that?

Upvotes: 0

Views: 1426

Answers (1)

Abacus
Abacus

Reputation: 19431

Spring Data Elasticsearch identifies the id property by either the @Id annotation or by the property name if it is id or document. So you get a conflict when having both the annotation and a field with one of these names.

In Spring Data Elasticsearch 4.0, you can change the name of the id property:

@Document(indexName = "sample-entities")
public class SampleEntity {

    @Id
    private String autogeneratedId;  // (1)

    @Field(name = "no-id")           // (2)
    private String id;

    @Field(type = FieldType.Text)
    private String message;

    // getter/setter omitted for brevity
}

(1) this field will be used for the _id in Elasticsearch and will get an autogenerated value from Elasticsearch.

(2) this field will be named no-id in Elasticsearch and will not be identified as id field because of the renaming in the @Field annotation.

If you are using Spring Data Elasticsearch 3.2, you need to ElasticsearchEntityMapper instead of the default Jackson based one.

Upvotes: 4

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