Guidance on how to index Elasticsearch documents using Spring Data

My application uses both Spring Data JPA and Spring Data Elasticsearch.

I plan to first persist the JPA entities, then map them to a slightly different java class (the Elasticsearch document) and finally index that document into the Elasticsearch index.

However, I have a few questions as how, where and when to index the documents.

• Is indexing a time consuming process that should be asynchronous?


• What design pattern could help me avoid having problematic code such as the following?

saveAdvertisement method from AdvertisementService:

public void saveAdvertisement(Advertisement jpaAdvertisement) {
        jpaAdvertisementRepository.save(jpaAdvertisement);
        //somehow map the jpa entity to the es document 
        elasticSearchTemplate.index(esAdvertisement);
}

whereby I have to have two concerns in the same method:

1. JPA persist


2. Elasticsearch indexing