support for sorting

[bartekkocik]

query=sort=+field
query=sort=-field
or something similar

[GLinBoy]

I think you can use something like a Spring pageable instance of adding sort to your query page parameters. check this:

	@GetMapping("search")
	public ResponseEntity<List<ProductDTO>> searchProducts(
			@RequestParam(value = "query", required = false, defaultValue = "") String query,
			@Parameter(hidden = true) Pageable pageable,
			HttpServletRequest request) {
		Specification<Product> spec = Specification.where(null); 
		if(!StringUtils.isBlank(query)) {
			Node rootNode = new RSQLParser().parse(query);
			spec = rootNode.accept(new CustomRsqlVisitor<Product>());
		}
		Page<ProductDTO> page = service.searchProducts(spec, pageable);
		HttpHeaders headers = PaginationUtil.generatePaginationHttpHeaders(page, request.getRequestURI());
		headers.setAccessControlExposeHeaders(Arrays.asList(HttpHeaders.LINK, "X-Total-Count"));
		return new ResponseEntity<>(page.getContent(), headers, HttpStatus.OK);
	}

You can find the source here:
https://github.com/GLinBoy/egs-assignment/blob/09d295710a93dd0ffab388a13fad961a8f677115/src/main/java/com/glinboy/assignment/egs/web/rest/ProductRestController.java#L41

What do you think? 🤔