paging

I am trying to use android Room API to load records from sQlite in pages. The issue is Paging library is loading entire database into model class and binding it with the adapter which is making UI thread skip frames. It suppose to load 20 records and then keep on adding more when required This is my view model class public class UserViewModel extends ViewModel { public LiveData<PagedList<User>> userList; public UserViewModel() { } public void init(UserDao userDao) { PagedList.Config pagedListConfig = (new PagedList.Config.Builder()).setEnablePlaceholders(true) .setPrefetchDistance(10)

I wanna do something like that public IQueryable GetPaged<TSource>(IQueryable<TSource> query, int startIndex, int pageSize) { return GetSession() .Linq<TSource>() .UseQuery(query) .Take(pageSize) .Skip(startIndex); } So you can put any IQuerable statement and "it becomes paged" or it will be paged. I am using LINQ to NHibernate. I hope you get it, sry for this bad english :o edit: Maybe my approach is the wrong one, is it? Paco This is copied from working code: public static class QueryableExtensions { public static IQueryable<T> Paged<T>(this IQueryable<T> source, int page, int pageSize) {

I am using PagedList.Mvc and I have added a nice way to navigate across various pages in a mvc web application. However, when I click on an "edit" or "details" tab and save changes I am sent back to the 1st page. I want to remain on the same page where the changes were made. Here is the code I have in the controller: // GET: Item public ActionResult Index(int? page) { var items = db.Items.Include(i => i.PurchaseOrder); return View(items.ToList().ToPagedList(page ?? 1, 3)); } Here is the code I have in the view: @using PagedList; @using PagedList.Mvc; @model IPagedList<PurchaseOrders.Models

Delphi 6 Prof. We have many applications. The programs have 8-12 MB size. In this period we many times got reports about "Invalid stream format" errors. We use shared Windows (or Linux) folders to store the applications, and users running them from these directories with links. This meaning that OS is paging the files, and loading the needed parts only. Formerly we got C000006 exceptions. As I know this meaning that the file paging (loading) failed on any network problem (timeout, etc). Now we face with "Invalid stream format" errors, and "invalid property xxxx" errors. If I know well, both

I cant manage to get to 'previous page' in ndb paging. I have checked the documentation and also this similar question here without success. def show_feedback(kind, bookmark=None): """Renders returned feedback.""" cursor = None more_p= None if bookmark: cursor = Cursor(urlsafe=bookmark) q = Feedback.query() q_forward = q.filter(Feedback.kind==Feedback.KINDS[kind]).order(-Feedback.pub_date) q_reverse = q.filter(Feedback.kind==Feedback.KINDS[kind]).order(Feedback.pub_date) feedbacks, next_cursor, more = q_forward.fetch_page(app.config['FEEDBACK_PER_PAGE'], start_cursor=cursor) if cursor: rev

I've got a System.Generic.Collections.List(Of MyCustomClass) type object. Given integer varaibles pagesize and pagenumber, how can I query only any single page of MyCustomClass objects? If you have your linq-query that contains all the rows you want to display, this code can be used: var pageNum = 3; var pageSize = 20; query = query.Skip((pageNum - 1) * pageSize).Take(pageSize); You can also make an extension method on the object to be able to write query.Page(2,50) to get the first 50 records of page 2. If that is want you want, the information is on the solid code blog. Hi There is a wicked

I can't find anywhere in the documentation that indicates how long request continuation tokens last for DocumentDb paging support. I therefore suspect it is intentionally undefined. In the real world, how long can I expect a token to last for? I ask this so that my app can present an error to the user when they are browsing through results that they have been started again, because the continuation token isn't valid. Continuation tokens in DocumentDB never expire. They encode all the state required to resume query execution. 来源： https://stackoverflow.com/questions/42264464/what-is-the-lifespan