什么Spring class负责执行schema.sql？

Question

I am making my own ORM and I'm at the point where I need to push the SQL code I've generated from my entity classes to the database. I do not aim to copy how Spring does it but rather see what phase of the lifecycle it runs in and how exactly.

Thanks

Answer 1

The actual class that read schema.sql and execute it is DataSourceInitializer#createSchema() .

Here are the high level flow which somehow triggers it:

1. If DataSource class is found from the class-path, spring-boot auto-configuration will enable DataSourceAutoConfiguration
2. DataSourceAutoConfiguration imports DataSourceInitializationConfiguration
3. DataSourceInitializationConfiguration registers DataSourceInitializerPostProcessor which will be executed and force initialising DataSourceInitializerInvoker .
4. DataSourceInitializerInvoker 's afterPropertiesSet will then execute DataSourceInitializer#createSchema() to read and execute schema.sql