@CompletionField 注释不会在映射上创建字段

Question

I am trying to make autocomplete suggestion using Elasticsearch. Here is my entity:

@Document(indexName = ESUtil.INDEX_NAME)
public class Person {
    
    @Id
    private String id;
    
    @Field(type = FieldType.Text, name = "name")
    private String name;

    @Field(type = FieldType.Text, name = "surname")
    private String surname;
    
    @Field(type = FieldType.Integer, name = "age")
    private int age;

    @Field(type = FieldType.Text, name = "job")
    private String job;

    @CompletionField
    private Completion suggest;

    // getters-setters...
}

I am creating documents with this method:

    @Autowired
    private ElasticsearchRestTemplate elastic;

    public String createOrUpdateDocument(Person person) {
        IndexQuery query = new IndexQueryBuilder().withId(person.getId()).withObject(person).build();
        
        return elastic.index(query, IndexCoordinates.of(ESUtil.INDEX_NAME));
    }

And it is creating the index automatically with these config after create a document:

{
    "dummy": {
        "aliases": {},
        "mappings": {
            "properties": {
                "_class": {
                    "type": "text",
                    "fields": {
                        "keyword": {
                            "type": "keyword",
                            "ignore_above": 256
                        }
                    }
                },
                "age": {
                    "type": "long"
                },
                "id": {
                    "type": "text",
                    "fields": {
                        "keyword": {
                            "type": "keyword",
                            "ignore_above": 256
                        }
                    }
                },
                "job": {
                    "type": "text",
                    "fields": {
                        "keyword": {
                            "type": "keyword",
                            "ignore_above": 256
                        }
                    }
                },
                "name": {
                    "type": "text",
                    "fields": {
                        "keyword": {
                            "type": "keyword",
                            "ignore_above": 256
                        }
                    }
                },
                "surname": {
                    "type": "text",
                    "fields": {
                        "keyword": {
                            "type": "keyword",
                            "ignore_above": 256
                        }
                    }
                }
            }
        },
        "settings": {
            "index": {
                "routing": {
                    "allocation": {
                        "include": {
                            "_tier_preference": "data_content"
                        }
                    }
                },
                "number_of_shards": "1",
                "provided_name": "dummy",
                "creation_date": "1674206424438",
                "number_of_replicas": "1",
                "uuid": "a_XWdCzxRUieyDZrioIaSg",
                "version": {
                    "created": "8060099"
                }
            }
        }
    }
}

So my question is, where is my "suggest" field with "completion" type? I am using spring-data-elasticsearch (ver: 4.4.2), elasticsearch (ver: 8.6.0) and there is not any additional configuration.

Am I missing some config or should I create index by myself?

Answer 1

The mapping of an index is only created by Spring Data Elasticsearch when you are using Spring Data repositories:

during bootstrapping the repository support on application startup ( https://docs.spring.io/spring-data/elasticsearch/docs/current/reference/html/#elasticsearch.repositories.autocreation ).

So if you don't use repository access for your entities, or the index already exists, the mapping will not be written automatically.

You always can do that by your self:

elastic.indexOps(Person.class).putMapping(Person.class)