How to run schema creation SQL statements before context initialization?

[soid]

I'm trying to use @Sql annotation for initializing the db schema like this:
@Sql(scripts = ["/schema.sql"])
(the code is in Kotlin here)

But it seems it is only executed after spring context in initialized. So, if my components rely on loading the db in initialization then it fails. For example, if I want to use the db in @PostConstruct method of my component:

@Component
class MyService(val personRepository: PersonRepository) {
    @PostConstruct
    fun init() {
        val persons = personRepository.findAll()
        println("Counted persons: " + persons.count())
    }
    ...

then it fails during Spring context initialization due to missing table. This is because schema.sql is only executed after the initialization.

I also tried to no avail:

• specifying the executionPhase: @Sql(scripts = ["/schema.sql"], executionPhase = Sql.ExecutionPhase.BEFORE_TEST_CLASS)
• use InitializingBean.afterPropertiesSet instead of @PostConstruct for component initialization
• use spring.jpa.defer-datasource-initialization=true in properties (link)

[tomix26]

Hey @soid, thanks for the question. The easiest way is to use a database migration tool like Flyway or Liquibase. Then you can be sure that the production and test schemas are the same. Alternatively, you can use a DataSourceInitializer bean for this purpose: https://stackoverflow.com/questions/23029722/how-to-execute-sql-insert-queries-to-populate-database-during-application-start