- List<NeutronPageLink> links = new ArrayList<>();
- Integer startPos = null;
- String startMarker;
- String endMarker;
- Boolean firstPage = false;
- Boolean lastPage = false;
-
- if (marker == null) {
- startPos = 0;
- }
-
- else {
-
- NeutronNetwork markerNetwork = new NeutronNetwork();
- markerNetwork.setNetworkUUID(marker);
-
- startPos = Collections.binarySearch(ans, markerNetwork, neutronNetworkComparator);
-
- if (!pageReverse){
- startPos = startPos + 1;
- }
- else {
- startPos = startPos - limit;
- }
-
- }
-
- if (startPos == null) {
- throw new ResourceNotFoundException("UUID for marker:" + marker + " could not be found");
- }
-
- if (startPos == 0){
- firstPage = true;
- }
-
- if (startPos + limit >= ans.size()) {
- ans = ans.subList(startPos, ans.size());
- startMarker = ans.get(0).getID();
- endMarker = ans.get(ans.size() - 1).getID();
- lastPage = true;
- }
- else if (startPos < 0) {
- if (startPos + limit > 0) {
- ans = ans.subList(0, startPos + limit);
- startMarker = ans.get(0).getID();
- endMarker = ans.get(ans.size() - 1).getID();
- firstPage = true;
- }
- else {
- throw new BadRequestException("Requested page is out of bounds. Please check the supplied limit and marker");
- }
- }
- else {
- ans = ans.subList(startPos, startPos + limit);
- startMarker = ans.get(0).getID();
- endMarker = ans.get(limit-1).getID();
- }
-
- if (!lastPage) {
- NeutronPageLink next = new NeutronPageLink();
- next.setRef("next");
- next.setHref(uriInfo.getAbsolutePath().toString() + "?limit=" + limit.toString() + "&marker=" + endMarker);
- links.add(next);
- }
-
- if (!firstPage) {
- NeutronPageLink previous = new NeutronPageLink();
- previous.setRef("previous");
- previous.setHref(uriInfo.getAbsolutePath().toString() + "?limit=" + limit.toString() + "&marker=" + startMarker + "&page_reverse=True");
- links.add(previous);
- }
-
- return Response.status(200).entity(new PaginatedNeutronNetworkRequest(ans, links)).build();
+ // Return a paginated request
+ NeutronNetworkRequest request = (NeutronNetworkRequest) PaginatedRequestFactory.createRequest(limit,
+ marker, pageReverse, uriInfo, ans, NeutronNetwork.class);
+ return Response.status(200).entity(request).build();