I am working for a mobile application and using Spring Boot as a backend and building REST APIs. So now, I need to implement like and dislike feature. That is if a user hits like (thumbs up icon) then count should be increased and that count should be displayed there and if hits dislike (thumbs down icon) then like count should be decreased and count should be displayed then also. But what I wrote for like and dislike is not as expected as it should be.
Actual working should be as follows:
1. If user A hits like to post A, then count of post A should be increased to 1.
2. If user B also hits like to post A then count of post A should be increased from 1 to 2. (means total like count of Post A is 2 now)
3. If user A again hits like button then it will be counted as dislike and count should get decreased from 2 to 1. (Now current count should be 1 again for post A).
So the like-dislike feature should work this way. But my code is not working as expected.
Below is my REST controller:
#RequestMapping(value = RestApiUrl.likepost, method = {RequestMethod.POST, RequestMethod.GET }, produces = {MediaType.APPLICATION_JSON_VALUE })
public ResponseEntity<?> likepost(HttpServletRequest request, #RequestParam("userid") String userid, #RequestParam("postid") String smsid) {
CustomResponse = ResponseFactory.getResponse(request);
int lcount = 0, dcount = 0, likcount = 0, postlike = 0;
FavouritePost favPost = null;
Post messageid = null, newpost = null;
try {
Long postid = Long.parseLong(smsid);
Long uid = Long.parseLong(userid);
User userbyid = userDao.findByUserid(uid);
messageid = postDao.findByPostid(postid);
postlike = messageid.getLike_count();
favPost = favouritePostDao.findByPostidAndUserid(messageid, userbyid);
if(favPost == null) {
favPost = new FavouritePost();
likcount = favPost.getLikecount();
lcount = likcount + 1;
favPost.setUserid(userbyid);
favPost.setCreatedby(userbyid);
favPost.setPostid(messageid);
favPost.setLikecount(lcount);
favouritePostDao.save(favPost);
messageid.setModifiedby(userbyid);
messageid.setModifieddate(new Date());
messageid.setLike_count(postlike+1);
newpost = postDao.save(messageid);
CustomResponse.setResponse(newpost);
CustomResponse.setStatus(CustomStatus.OK);
CustomResponse.setStatusCode(CustomStatus.OK_CODE);
CustomResponse.setResponseMessage(CustomStatus.SuccessMsg);
}else {
dcount = favPost.getDislikecount();
favPost.setUserid(userbyid);
favPost.setModifiedby(userbyid);
favPost.setModifieddate(new Date());;
favPost.setPostid(messageid);
favPost.setDislikecount(dcount+1);;
favouritePostDao.save(favPost);
messageid.setModifiedby(userbyid);
messageid.setModifieddate(new Date());
if(postlike > 0) {
int count =postlike-1;
messageid.setLike_count(count);
}else {
int count =postlike+1;
messageid.setLike_count(count);
}
newpost = postDao.save(messageid);
CustomResponse.setResponse(newpost);
CustomResponse.setStatus(CustomStatus.OK);
CustomResponse.setStatusCode(CustomStatus.OK_CODE);
CustomResponse.setResponseMessage(CustomStatus.SuccessMsg);
}
} catch (Exception e) {
e.printStackTrace();
CustomResponse.setResponse("Error occurred! please try again");
CustomResponse.setStatus(CustomStatus.Error);
CustomResponse.setStatusCode(CustomStatus.Error_CODE);
CustomResponse.setResponseMessage(CustomStatus.ErrorMsg);
}
return new ResponseEntity<ResponseDao>(CustomResponse, HttpStatus.OK);
}
Please help me in the implementation of like-dislike feature for a mobile application. A concept/idea would be great of how to do this.
Related
I have a ldap method that returns all users that are in it (almost 1300 users) and I want to return them by page, similar to what PagingAndSortingRepository does in Springboot:
If I have this endpoint ( users/?page=0&size=1 )and I wnat to return on page 0 just 1 entry.
Is there any way to do that?
Currently I have this but it doesn´t work:
SearchRequest searchRequest = new SearchRequest(ldapConfig.getBaseDn(), SearchScope.SUB,
Filter.createEqualityFilter("objectClass", "person"));
ASN1OctetString resumeCookie = null;
while (true) {
searchRequest.setControls(new SimplePagedResultsControl(pageable.getPageSize(), resumeCookie));
SearchResult searchResult = ldapConnection.search(searchRequest);
numSearches++;
totalEntriesReturned += searchResult.getEntryCount();
for (SearchResultEntry e : searchResult.getSearchEntries()) {
String[] completeDN = UaaUtils.searchCnInDn(e.getDN());
String[] username = completeDN[0].split("=");
UserEntity u = new UserEntity(username[1]);
list.add(u);
System.out.println("TESTE");
}
SimplePagedResultsControl responseControl = SimplePagedResultsControl.get(searchResult);
if (responseControl.moreResultsToReturn()) {
// The resume cookie can be included in the simple paged results
// control included in the next search to get the next page of results.
System.out.println("Antes "+resumeCookie);
resumeCookie = responseControl.getCookie();
System.out.println("Depois "+resumeCookie);
} else {
break;
}
Page<UserEntity> newPage = new PageImpl<>(list, pageable, totalEntriesReturned);
System.out.println("content " + newPage.getContent());
System.out.println("total elements " + newPage.getTotalElements());
System.out.println(totalEntriesReturned);
}
I'm unsure if this is the proper way, but here's how I went about it:
public PaginatedLookup getAll(String page, String perPage) {
PagedResultsCookie cookie = null;
List<LdapUser> results;
try {
if ( page != null ) {
cookie = new PagedResultsCookie(Hex.decode(page));
} // end if
Integer pageSize = perPage != null ? Integer.parseInt(perPage) : PROCESSOR_PAGE_SIZE;
PagedResultsDirContextProcessor processor = new PagedResultsDirContextProcessor(pageSize, cookie);
LdapName base = LdapUtils.emptyLdapName();
SearchControls sc = new SearchControls();
sc.setSearchScope(SearchControls.SUBTREE_SCOPE);
sc.setTimeLimit(THREE_SECONDS);
sc.setCountLimit(pageSize);
sc.setReturningAttributes(new String[]{"cn", "title"});
results = ldapTemplate.search(base, filter.encode(), sc, new PersonAttributesMapper(), processor);
cookie = processor.getCookie();
} catch ( Exception e ) {
log.error(e.getMessage());
return null;
} // end try-catch
String nextPage = null;
if ( cookie != null && cookie.getCookie() != null ) {
nextPage = new String(Hex.encode(cookie.getCookie()));
} // end if
return new PaginatedLookup(nextPage, results);
}
The main issue I kept on hitting was trying to get the cookie as something that could be sent to the client, which is where my Hex.decode and Hex.encode came in handy.
PersonAttributesMapper is a private mapper that I have to make the fields more human readable, and PaginatedLookup is a custom class I use for API responses.
I want to collect some specific people's tweets in recent one year. I'm using Twitter4J, like this:
Paging paging = new Paging(i, 200);
try {
statuses = twitter.getUserTimeline("martinsuchan",paging);
} catch (TwitterException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
But how can I filter the Tweets of that user for a certain time interval?
Any answer appreciated
You can filter the statuses locally, based on status.getCreatedAt(). Example:
try {
int statusesPerPage = 200;
int page = 1;
String username = "username";
Calendar cal = Calendar.getInstance();
cal.add(Calendar.YEAR, -1);
Twitter twitter = new TwitterFactory().getInstance();
Paging paging = new Paging(page, statusesPerPage);
List<Status> statuses = twitter.getUserTimeline(username, paging);
page_loop:
while (statuses.size() > 0) {
System.out.println("Showing #" + username + "'s home timeline, page " + page);
for (Status status : statuses) {
if (status.getCreatedAt().before(cal.getTime())) {
break page_loop;
}
System.out.println(status.getCreatedAt() + " - " + status.getText());
}
paging = new Paging(++page, statusesPerPage);
statuses = twitter.getUserTimeline(username, paging);
}
} catch (TwitterException te) {
te.printStackTrace();
}
I am seeing errors while exporting email in office 365 account using ews managed api, "The server cannot service this request right now. Try again later." Why is that error occurring and what can be done about it?
I am using the following code for that work:-
_GetEmail = (EmailMessage)item;
bool isread = _GetEmail.IsRead;
sub = _GetEmail.Subject;
fold = folder.DisplayName;
historicalDate = _GetEmail.DateTimeSent.Subtract(folder.Service.TimeZone.GetUtcOffset(_GetEmail.DateTimeSent));
props = new PropertySet(EmailMessageSchema.MimeContent);
var email = EmailMessage.Bind(_source, item.Id, props);
bytes = new byte[email.MimeContent.Content.Length];
fs = new MemoryStream(bytes, 0, email.MimeContent.Content.Length, true);
fs.Write(email.MimeContent.Content, 0, email.MimeContent.Content.Length);
Demail = new EmailMessage(_destination);
Demail.MimeContent = new MimeContent("UTF-8", bytes);
// 'SetExtendedProperty' used to maintain historical date of items
Demail.SetExtendedProperty(new ExtendedPropertyDefinition(57, MapiPropertyType.SystemTime), historicalDate);
// PR_MESSAGE_DELIVERY_TIME
Demail.SetExtendedProperty(new ExtendedPropertyDefinition(3590, MapiPropertyType.SystemTime), historicalDate);
if (isread == false)
{
Demail.IsRead = isread;
}
if (_source.RequestedServerVersion == flagVersion && _destination.RequestedServerVersion == flagVersion)
{
Demail.Flag = _GetEmail.Flag;
}
_lstdestmail.Add(Demail);
_objtask = new TaskStatu();
_objtask.TaskId = _taskid;
_objtask.SubTaskId = subtaskid;
_objtask.FolderId = Convert.ToInt64(folderId);
_objtask.SourceItemId = Convert.ToString(_GetEmail.InternetMessageId.ToString());
_objtask.DestinationEmail = Convert.ToString(_fromEmail);
_objtask.CreatedOn = DateTime.UtcNow;
_objtask.IsSubFolder = false;
_objtask.FolderName = fold;
_objdbcontext.TaskStatus.Add(_objtask);
try
{
if (counter == countGroup)
{
Demails = new EmailMessage(_destination);
Demails.Service.CreateItems(_lstdestmail, _destinationFolder.Id, MessageDisposition.SaveOnly, SendInvitationsMode.SendToNone);
_objdbcontext.SaveChanges();
counter = 0;
_lstdestmail.Clear();
}
}
catch (Exception ex)
{
ClouldErrorLog.CreateError(_taskid, subtaskid, ex.Message + GetLineNumber(ex, _taskid, subtaskid), CreateInnerException(sub, fold, historicalDate));
counter = 0;
_lstdestmail.Clear();
continue;
}
This error occurs only if try to export in office 365 accounts and works fine in case of outlook 2010, 2013, 2016 etc..
Usually this is the case when exceed the EWS throttling in Exchange. It is explain in here.
Make sure you already knew throttling policies and your code comply with them.
You can find throttling policies using Get-ThrottlingPolicy if you have the server.
One way to solve the throttling issue you are experiencing is to implement paging instead of requesting all items in one go. You can refer to this link.
For instance:
using Microsoft.Exchange.WebServices.Data;
static void PageSearchItems(ExchangeService service, WellKnownFolderName folder)
{
int pageSize = 5;
int offset = 0;
// Request one more item than your actual pageSize.
// This will be used to detect a change to the result
// set while paging.
ItemView view = new ItemView(pageSize + 1, offset);
view.PropertySet = new PropertySet(ItemSchema.Subject);
view.OrderBy.Add(ItemSchema.DateTimeReceived, SortDirection.Descending);
view.Traversal = ItemTraversal.Shallow;
bool moreItems = true;
ItemId anchorId = null;
while (moreItems)
{
try
{
FindItemsResults<Item> results = service.FindItems(folder, view);
moreItems = results.MoreAvailable;
if (moreItems && anchorId != null)
{
// Check the first result to make sure it matches
// the last result (anchor) from the previous page.
// If it doesn't, that means that something was added
// or deleted since you started the search.
if (results.Items.First<Item>().Id != anchorId)
{
Console.WriteLine("The collection has changed while paging. Some results may be missed.");
}
}
if (moreItems)
view.Offset += pageSize;
anchorId = results.Items.Last<Item>().Id;
// Because you’re including an additional item on the end of your results
// as an anchor, you don't want to display it.
// Set the number to loop as the smaller value between
// the number of items in the collection and the page size.
int displayCount = results.Items.Count > pageSize ? pageSize : results.Items.Count;
for (int i = 0; i < displayCount; i++)
{
Item item = results.Items[i];
Console.WriteLine("Subject: {0}", item.Subject);
Console.WriteLine("Id: {0}\n", item.Id.ToString());
}
}
catch (Exception ex)
{
Console.WriteLine("Exception while paging results: {0}", ex.Message);
}
}
}
I have a form with a submitbutton which will get results from a database and updates a listview based on these results. If there is no result, a feedback message is shown. This all works fine.
Now I want to replace the submitlink with an IndicatingAjaxButton, so the user can see something happening when getting the result takes a long time.
The basic idea is this:
IndicatingAjaxButton submitLink = new IndicatingAjaxButton("submit", form) {
private static final long serialVersionUID = -4306011625084297054L;
#Override
public void onSubmit(AjaxRequestTarget target, Form<?> form) {
Integer hourFrom = 0;
Integer hourTo = 0;
Integer minuteFrom = 0;
Integer minuteTo = 0;
hourFrom = Integer.parseInt(hour_from.getModelObject());
hourTo = Integer.parseInt(hour_to.getModelObject());
minuteFrom = Integer.parseInt(minute_from.getModelObject());
minuteTo = Integer.parseInt(minute_to.getModelObject());
Calendar from = Calendar.getInstance();
Calendar to = Calendar.getInstance();
Date dateFrom = date_from.getModelObject();
Date dateTo = date_to.getModelObject();
from.setTime(dateFrom);
to.setTime(dateTo);
from.set(Calendar.HOUR, hourFrom);
from.set(Calendar.MINUTE, minuteFrom);
to.set(Calendar.HOUR, hourTo);
to.set(Calendar.MINUTE, minuteTo);
if (topicQueueSelect.getModelObject() == null) {
error("Please select a message name.");
getSession().setAttribute("error", "");
}
if (to.before(from)) {
error("Date to must be after date from.");
getSession().setAttribute("error", "");
}
cal.setTimeInMillis(System.currentTimeMillis());
if (from.after(cal)) {
error("Date from must be in the past.");
getSession().setAttribute("error", "");
}
if (getSession().getAttribute("error") != null) {
getSession().removeAttribute("error");
return;
}
page.setModelObject(1);
List<Search> searchFields = (List<Search>) searchFieldsField
.getModelObject();
messageKeyDataList = messageController.search(
topicQueueSelect.getModelObject(), searchFields,
from.getTime(), to.getTime(),
maxResults.getModelObject(), page.getModelObject(),
sortorder);
if (messageKeyDataList.size() == 0) {
info("Search criteria didn't produce any results.");
result.setList(messageKeyDataList);
resultContainer.setVisible(false);
return;
}
resultContainer.setVisible(true);
resultSize = messageController.getResultSize();
int pages = (int) Math.ceil((float) resultSize
/ maxResults.getModelObject());
ArrayList<Integer> pageNumbers = new ArrayList<Integer>();
for (int n = 1; n <= pages; n++) {
pageNumbers.add(n);
}
page.setChoices(pageNumbers);
pageunder.setChoices(pageNumbers);
showing.setDefaultModelObject("Showing 1 to "
+ messageKeyDataList.size() + " out of " + resultSize
+ " messages");
lastSearch.put("topicQueue", topicQueueSelect.getModelObject());
lastSearch.put("searchFields", searchFields);
lastSearch.put("from", from.getTime());
lastSearch.put("to", to.getTime());
lastSearch.put("maxResults", maxResults.getModelObject());
result.setList(messageKeyDataList);
target.add(feedback);
}
};
The SubmitLink does show me either the ResultView with the new list, or the info message, the IndicatingAjaxButton doesn't. I know the form submit is called, because the system.out is being printed.
Any suggestions on this?
SubmitLink is non-Ajax component. Using it will repaint the whole page!
IndicatingAjaxButton is an Ajax component. You need to use the passed AjaxRequestTarget to add components which should be repainted with the Ajax response. For example the FeedbackPanel should be added to the AjaxRequestTarget.
I found that I had to do setOutputMarkupPlaceholderTag(true) on both the resultContainer and the feedback. After that adding them to the requesttarget works as expected.
I have several jqgrids running and all are functioning fine. However, when I do a search, I am only displaying ten search results per page. Whenever there are more than ten results, clicking on page two has no effect on the grid. Here is one of my controller actions, pay particular attention to the if satatement where search is true....
EDIT
I think I may have found a clue as to what may be causing my issue. You see I have several subgrids under the main grid. In terms of my java code I have object-A which has a list of object-B
, thus A has a subgrid of B. The way i am building up the json string to feed to the grid is by iterating over the list of B contained in A. I did not write a query of some kind to say order by, and limit the results etc.
So i guess the real question should be how to build a finder on a collection so that the contents can be arranged and ordered as i wish?
Here is the action I am calling for one of my entities described as B above. Pay particular attention to where i said person.getContacts()
#RequestMapping(value = "contactjsondata/{pId}", method = RequestMethod.GET)
public #ResponseBody String contactjsondata(#PathVariable("pId") Long personId, Model uiModel, HttpServletRequest httpServletRequest) {
Person person = Person.findPerson(personId);
String column = "id";
if(httpServletRequest.getParameter("sidx") != null){
column = httpServletRequest.getParameter("sidx");
}
String orderType = "DESC";
if(httpServletRequest.getParameter("sord") != null){
orderType = httpServletRequest.getParameter("sord").toUpperCase();
}
int page = 1;
if(Integer.parseInt(httpServletRequest.getParameter("page")) >= 1){
page = Integer.parseInt(httpServletRequest.getParameter("page"));
}
int limitAmount = 10;
int limitStart = limitAmount*page - limitAmount;
List<Contact> contacts = new ArrayList<Contact>(person.getContacts());
double tally = Math.ceil(contacts.size()/10.0d);
int totalPages = (int)tally;
int records = contacts.size();
StringBuilder sb = new StringBuilder();
sb.append("{\"page\":\"").append(page).append("\", \"records\":\"").append(records).append("\", \"total\":\"").append(totalPages).append("\", \"rows\":[");
boolean first = true;
for (Contact c: contacts) {
sb.append(first ? "" : ",");
if (first) {
first = false;
}
sb.append(String.format("{\"id\":\"%s\", \"cell\":[\"%s\", \"%s\", \"%s\"]}",c.getId(), c.getId(), c.getContactType().getName() ,c.getContactValue()));
}
sb.append("]}");
return sb.toString();
}
To fix the issue with pagination you need to replace the following block of code
for (Contact c: contacts) {
sb.append(first ? "" : ",");
if (first) {
first = false;
}
sb.append(String.format("{\"id\":\"%s\", \"cell\":[\"%s\", \"%s\", \"%s\"]}",c.getId(), c.getId(), c.getContactType().getName() ,c.getContactValue()));
}
with:
for (int i=limitStart; i<Math.min(records, limitStart+limitAmount); i++){
Contact c = contacts[i];
sb.append(first ? "" : ",");
if (first) {
first = false;
}
sb.append(String.format("{\"id\":\"%s\", \"cell\":[\"%s\", \"%s\", \"%s\"]}",c.getId(), c.getId(), c.getContactType().getName() ,c.getContactValue()));
}
Another option is using loadonce:true to let the jqGrid handle pagination and sorting. In this case you don't need to make changes described above