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javaspringmongodbsql-delete

How to check for success/failure in Java Spring database queries?

I have some code to delete a recipe from my mongoDB database:

@RequestMapping(value = "/recipe/{id}", method = RequestMethod.DELETE)
public String deleteSingleRecipe(@PathVariable("id") String recipeId) {
    try {
        repository.deleteById(recipeId);
        return "Deleted RECIPE success";
    } catch (Exception ex) {
        return ex.toString();
    }
}

This is able to successfully delete a recipe based on ID. However, I'm unsure how to catch cases such as if the recipe doesn't even exist, or if the deletion is failed.

With JavaScript/Node this was really easy because I could pass a callback function with depending on if result/error were null I could determine the success of the query and proceed. I'm pretty lost how to do this in Java/Spring.

When I tried to delete a recipe a 2nd time I still got "Deleted RECIPE success".

Solution

  • You can add a check before using existsById

    boolean isFound = repository.existsById(recipeId);

    Returns whether an entity with the given id exists.