How to tell a Spring data-repository's delete method to not throw an exception if an entity does not exists?

How to tell a Spring data-repository's delete method to not throw an exception if an entity does not exists?

By default, Spring Data JPA's repository delete method will throw an exception (typically EmptyResultDataAccessException) if the entity you're trying to delete doesn't exist in the database. If you want to tell the delete method not to throw an exception when the entity doesn't exist, you can use the @Modifying annotation in combination with a custom query method.

Here's how you can achieve this:

  • Annotate your repository interface with @Repository (if it's not already annotated).
import org.springframework.data.jpa.repository.JpaRepository; import org.springframework.stereotype.Repository; @Repository public interface MyEntityRepository extends JpaRepository<MyEntity, Long> { // Your repository methods here }
  • Create a custom delete query method in your repository interface using the @Modifying annotation, and set the clearAutomatically and flushAutomatically attributes to true.
import org.springframework.data.jpa.repository.JpaRepository; import org.springframework.data.jpa.repository.Modifying; import org.springframework.stereotype.Repository; import org.springframework.transaction.annotation.Transactional; @Repository public interface MyEntityRepository extends JpaRepository<MyEntity, Long> { @Transactional @Modifying(clearAutomatically = true, flushAutomatically = true) void deleteById(Long id); }

In this example:

  • We create a custom method deleteById that deletes an entity by its ID.
  • We annotate the method with @Modifying to indicate that it modifies the database.
  • We set clearAutomatically and flushAutomatically to true to clear the persistence context (in case of JPA) and flush changes to the database automatically.
  • Now, when you call the deleteById method with an ID that does not exist in the database, it won't throw an exception. Instead, it will execute without any error, and nothing will be deleted from the database.

Keep in mind that this approach modifies the behavior of the deleteById method specifically. If you want to change the behavior of other delete methods, you can create similar custom methods for them with the @Modifying annotation.

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