CODEWITHSUNDEEP
javaspring-bootcollectionsmappingdto
user14801702
user14801702

Reputation:

Fill a DTO with two findAll() of two different types in Java Spring Boot

I have two collections of different types. The collection are returned by two servicices, that return two findAll() in two repositories.

I want to combine the two collection in a DTO. My DTO is just a combination of all the collections models variables.

This is my code. I tryed a lot of technique, this is one of them. I want to return a CombinationModel collection

            List<OneModel> listOne = oneService.oneEndPoint(); // findAll()
            List<TwoModel> listTwo = twoService.twoEndPoint(); // findAll()

            List<ConbinationModel> list = new ArrayList<>();
            list.addAll(listOne);
            list.addAll(listTwo);

Upvotes: 0

Views: 1060

Answers (1)

burm87
burm87

Reputation: 848

You have many options here. One could be creating two static constructors in your ConbinationModel class like:

public static ConbinationModel fromOneModel(OneModel model) {
    final ConbinationModel conbinationModel = new ConbinationModel();
    conbinationModel.setField(model.getField());
    // set other fields
    return conbinationModel;
}

public static ConbinationModel fromTwoModel(TwoModel model) {
    final ConbinationModel conbinationModel = new ConbinationModel();
    conbinationModel.setField(model.getField());
    // set other fields
    return conbinationModel;
}

And then you could stream over your lists:

List<ConbinationModel> fromListOne = listOne.stream()
    .map(ConbinationModel::fromOneModel)
    .collect(Collectors.toList());

List<ConbinationModel> fromListTwo = listTwo.stream()
    .map(ConbinationModel::fromTwoModel)
    .collect(Collectors.toList());

Upvotes: 1

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