CODEWITHSUNDEEP
node.jselasticsearch
SexyMF
SexyMF

Reputation: 11185

Elasticsearch create join field (Nodejs)

I have the following docs:

export class CustomerServiceResultType{
  id: string;
  body:{customerRelation: string};
}

export class CustomerType{
  id: string;
  body:{name: string};
}

I want CustomerServiceResultType to have a relation to CustomerType with the field: customerRelation.

this is my mapping:

await this.elasticsearchService.indices.putMapping({
  "index": "db",
  "type": "CustomerServiceResultType",
  "body" : {
      "properties": {
        "customerRelation": {
          "type": "join",
          "relations": {
            "CustomerServiceResultType": "CustomerType"
          }
      }
    }
  }
});

This is the error I get:

[Nest] 421512   - 11/21/2020, 6:40:42 PM   [ExceptionsHandler] illegal_argument_exception +96414ms
ResponseError: illegal_argument_exception

There are no details about this error...

Thanks

Upvotes: 2

Views: 320

Answers (1)

Joe - Check out my books
Joe - Check out my books

Reputation: 16943

There's nothing wrong with your request per-se -- I think it just requires one extra option: include_type_name: true.

It's undefined by default in nodejs but is required in ES 7.x on the server side. More reasoning behind this is here.

So this should do the trick:

await client.indices.putMapping({
  include_type_name: true,
  index: "db",
  type: "CustomerServiceResultType",
  body : {
      properties: {
        customerRelation: {
          type: "join",
          relations: {
            CustomerServiceResultType: "CustomerType"
          }
      }
    }
  }
});

Typed indexes will be removed in 8.x so the best approach would actually be:

await client.indices.putMapping({
  index: "db",
  body : {
      properties: {
        customerRelation: {
          type: "join",
          relations: {
            CustomerServiceResultType: "CustomerType"
          }
      }
    }
  }
});

BTW: your typescript types don't really play a role here because ES is a JSON-only interface and while there's the deprecated type aspect to ES, the two concepts are very distant.

Upvotes: 1

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