Better idiom for listing inner items of a 1-to-N-to-1 relationship?

Question

I have the following model: 1 RepositoryDTO can have many ResourceDTOs, and in each ResourceDTO is exacly one TeamDTO. So to get the TeamDTOs from the RepositoryDTO, I am doing the following: ``` RepositoryDTO repoDTO = ... List teamsLinkedToRepo = getTeamsLinkedTo(repoDTO); private List getTeamsLinkedTo(final RepositoryDTO repository) { final List teamsLinkedToRepository = new ArrayList(); for (final ResourceDTO resourceDTO : repository.getResources()) { teamsLinkedToRepository.add(resourceDTO.getTeam()); } return teamsLinkedToRepository; } ``` I'm just wondering is there a better idiom for doing this, maybe using Google Guava?

Accepted Answer

Keep simple things simple.

We used Google Guava excessively in one of our projects. And while it was less code and faster to read, it became a nightmare when debugging. So I advice to not use it until you get an huge advantage from it (and simple for-loops won't get any better with it).

With pure Java it's good code. There is no need to improve it.

Better idiom for listing inner items of a 1-to-N-to-1 relationship?

Solution

Problem