mongoDB index 자동 생성

Entity class에 @Document 어노테이션을 추가하고,

특정필드에 @Indexed를 추가하면 자동으로 인덱스가 생성된다.

만약에 잘 안되면, 원인분석을 해야겠지만,

임시로 코드로 하는 방법이있는데, 다음과 같다.

1.  잘 동작함 - MongoConfig 수정 방식

    //AUTO INDEX CREATION안되서 추가: 참고- https://github.com/spring-projects/spring-boot/issues/28478#issuecomment-954627106
    @Override
    protected boolean autoIndexCreation() {
        return true;
    }

    @Bean
    @Primary
    public MongoMappingContext mongoMappingContext(MongoCustomConversions conversions, MongoManagedTypes managedTypes) {
        MongoMappingContext mappingContext = super.mongoMappingContext(conversions, managedTypes);
        mappingContext.setAutoIndexCreation(true);
        return mappingContext;
    }

 

 

 

2. not TESTED. - post Construct방식

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.index.Index;
import org.springframework.data.mongodb.core.index.IndexOperations;
import org.springframework.stereotype.Service;

import javax.annotation.PostConstruct;

@Service
public class IndexCreatorService {

    @Autowired
    private MongoTemplate mongoTemplate;

    @PostConstruct
    public void initIndexes() {
        IndexOperations indexOps = mongoTemplate.indexOps(ExampleEntity.class);
        indexOps.ensureIndex(new Index().on("fieldToIndex", org.springframework.data.domain.Sort.Direction.ASC));
    }
}