How to ignore accents in Spring JPA findBy repository?

Question

Lets say we have this repository:

public interface DeviceTypeRepository extends CrudRepository<DeviceType, Integer>, JpaSpecificationExecutor<DeviceType> {    
    public Iterable<DeviceType> findByNameContaining(String name);    
}

How to obtain the same results by ignoring when user mistypes accents ni search filter?

Examples: João | Joao | JOÃO João | Joao | JOÃO João | Joao | JOÃO , Marcio | Márcio Marcio | Márcio etc.

Answer 1

There is no way to do that within Spring's built-in capabilities. You can consider using Elastic Search to do that, there is an article on this subject You Have an Accent .

Another way is to not store accent letters in DB and perform mapping before executing SQL request or perform mapping on DB side using custom SQL function - but it's a too cumbersome and fragile solution.