How to map Page to Page in spring-data-rest

Question

When I hit the database with PagingAndSortingRepository.findAll(Pageable) I get Page. However, I want to expose DTO\'s to the clien

Answer 1

In Spring Data 2, the Page map method takes a Function instead of a Converter, but it still works basically the same as @Ali Dehghani described.

Using Function:

Page<ObjectEntity> entities = objectEntityRepository.findAll(pageable);
Page<ObjectDto> dtoPage = entities.map(new Function<ObjectEntity, ObjectDto>() {
    @Override
    public ObjectDto apply(ObjectEntity entity) {
        ObjectDto dto = new ObjectDto();
        // Conversion logic

        return dto;
    }
});

Answer 2

Here is my solution, thanks to @Ali Dehghani

private Page<ObjectDTO> mapEntityPageIntoDTOPage(Page<ObjectEntity> objectEntityPage) {
        return objectEntityPage.map(new Converter<ObjectEntity, ObjectDTO>() {
            public ObjectDTO convert(ObjectEntity objectEntity) {
                return new ObjectDTO(objectEntity, httpSession);
            }

        });
    }

Answer 3

This works correctly in Spring 2.0 -

@Override
public Page<BookDto> getBooksByAuthor(String authorId, Pageable pageable) {
        Page<BookEntity> bookEntity = iBookRepository.findByAuthorId(authorId, pageable);
        return bookEntity.map(new Function<BookEntity, BookDto>() {

            @Override
            public BookDto apply(BookEntity t) {
                return new ModelMapper().map(t, BookDto.class);
            }

        });
    }

The converter is no longer supported in Page type for Spring 2.0. Also, the Function should be used from java.util.function.Function.