Spring data mongo pagination

Question

I want to implement pagination with Spring Data Mongo. There are many tutorials and docs suggest to use PagingAndSortingRepository, like this:

StoryRepo extends PagingAndSortingRepository<Story, String>{}

And so because PagingAndSortingRepository provides api for query with paging, I can use it like:

Page<Story> story = storyRepo.findAll(pageable);

My question is where actually is this findAll method here implemented? Do I need to write its implementation by myself? The StoryRepoImpl which implements StoryRepo needs to implement this method?

Answer 1

You do not need to implement the method as when you autowired the Spring object PagingAndSortingRepository, it automatically implements the method for you.

Please note that since you are using Mongodb, you can extend MongoRepository instead.

Then in Spring, enable pagination using this:

@RequestMapping(value="INSERT YOUR LINK", method=RequestMethod.GET)
  public List<Profile> getAll(int page) {
    Pageable pageable = new PageRequest(page, 5); //get 5 profiles on a page
    Page<Profile> page = repo.findAll(pageable);
    return Lists.newArrayList(page);