lazy-loading

问题 I have implemented IDataErrorInfo interface using Castle.DynamicProxy IIterceptor. I have also implemented a NHibernate interceptor which instantiates my entities using this interceptor. The problem is with lazy loaded entities. These are constructed using a proxy factory class specified in nhibernate config file, which obviously does not provide IDataErrorInfo implementation. This proxies are masking the underlying implementation of IDataErrorInfo by my interceptor which causes the

问题 I have a coupon code site. On some category pages I'm limiting it to display only 50 coupons as there are potentially 1000's of coupons for each category. I don't display them all as it would be hard on the server, and the browser will hang. Is it possible to lazy load more coupons as the user keeps scrolling down? The only lazy load plugins I've found are for images. Anything out there that will work with PHP and loading data from a MySQL db? Any help is appreciated. Thanks! 回答1: You will

问题 I am using server side rendering with lazy loading of Webpack 2.2.0 using import() method, and using babel-plugin-transform-ensure-ignore for server side only, everything runs without errors and perfectly working except one thing. when page is loaded I can see server side rendering, but when webpack calling my dynamic component, all page renders again, which is visible for users. I need to know how to handle such problems. I found it when saw that, my first line is <div data-reactroot="" data

问题 First of all, I am new to ASP.Net MVC 3, and I am also using EF 4.1. I have a complex object, something similar to let's say a Product object containing a Category object. So we have Product.CategoryId, Product.Category and some extra properties. I also have a form to create products with a dropdown list to select the category. In my controller, after the product has been created, I need to have access to some property of the Category to perform some extra stuff. However, although Product

问题 I was reading this article on Nhibernate Lazy Loading http://nhforge.org/wikis/howtonh/lazy-loading-eager-loading.aspx and it uses and example of a class structure like this: The article then shows the following code: using (ISession session = SessionFactory.OpenSession()) { var fromDb = session.Get<Order>(_order.Id); int sum = 0; foreach (var line in fromDb.OrderLines) { // just some dummy code to force loading of order line sum += line.Amount; } } It then goes on to talk about: the n+1

问题 So this works: import Page from 'components/Page'; ... render() { return ( <Route render={props => <Page {...props}/>}/> ); } But this doesn't: import React, { lazy } from 'react'; const Cmp = lazy(() => import('components/Page')); ... render() { return ( <Route render={props => <Cmp {...props}/>}/> ); } React 16.8.6 React Router 5.0.0 I get this: The above error occurred in one of your React components: in Unknown (at configured.route.js:41) in Route (at configured.route.js:41) in

问题 I have these Domain Models public class Topic { public int TopicId { get; set; } public virtual ICollection<Post> Posts { get; set; } } public class Post { public int PostId { get; set; } public int? TopicId { get; set; } public virtual Topic Topic { get; set; } } For example I would like to impliment method TestAsync, there I want to work with Topic object and related Posts objects. Topic model I can get using async method and topicId as param. public async Task<bool> TestAsync(int topicId)

问题 Im using hibernate-core-4.0.1.Final hibernate-validator-4.2.0.Final I have a lazy loadable Entity @NotNull @OneToOne(fetch = FetchType.LAZY,optional = false,cascade = CascadeType.PERSIST) @JoinColumn(name="library_id") private Library library; public Library getLibray() { return library; } and a defaultValidator private final ValidatorFactory factory = Validation .buildDefaultValidatorFactory(); private final Validator val = factory.getValidator(); When I am trying to validate unattached and

问题 Im using hibernate-core-4.0.1.Final hibernate-validator-4.2.0.Final I have a lazy loadable Entity @NotNull @OneToOne(fetch = FetchType.LAZY,optional = false,cascade = CascadeType.PERSIST) @JoinColumn(name="library_id") private Library library; public Library getLibray() { return library; } and a defaultValidator private final ValidatorFactory factory = Validation .buildDefaultValidatorFactory(); private final Validator val = factory.getValidator(); When I am trying to validate unattached and

问题 My main application form (WinForms) has a DataGridView, that uses DataBinding and Fluent NHibernate to display data from a SQLite database. This form is open for the entire time the application is running. For performance reasons, I set the convention DefaultLazy.Always() for all DB access. So far, the only way I've found to make this work is to keep a Session (let's call it MainSession) open all the time for the main form, so NHibernate can lazy load new data as the user navigates with the