Cannot delete recipe after you update it

[TimberBro]

Steps to reproduce:

1. Start application.
2. Navigate to http://localhost:8080/recipe/1/update to update the recipe.
3. Change nothing and click the "Submit" button.
4. Navigate to http://localhost:8080/recipe/1/delete to delete the updated recipe.
5. Get the following error:

could not execute statement; SQL [n/a]; constraint ["FKDBFSIV21OCSBT63SD6FG0T3C8: PUBLIC.NOTES FOREIGN KEY(RECIPE_ID) REFERENCES PUBLIC.RECIPE(ID) (1)"; SQL statement: delete from recipe where id=? [23503-197]]; nested exception is org.hibernate.exception.ConstraintViolationException: could not execute statement

Expected behavior:
You can delete the recipe after an update.

[TimberBro]

The issue is in entity modeling.
After updating the recipe the new row is created in the "notes" table. The new note has reference to the recipe_id.
On the other side, the "recipe" table stores reference only for the new Note.

Possible solution:
Add orphanRemoval to the relationship. This parameter will prevent creation of orphaned records and will fix initial issue.
Here's a code snippet for Recipe.java:

    @OneToOne(cascade = CascadeType.ALL, orphanRemoval = true)  
    private Notes notes;