lazy-loading

问题 I need to implement the lazy loading concept for the images in my tableview, so that the user will be provided with the textual data initially and later the images. How can i implement this in to my app.. help needed.. please Thanks in advance Shibin 回答1: What i have created for a project of mine works as follows; Extend the UITableViewCell class by a category in "UITableViewCell+Async.h" (See some examples if you are not sure what the category thing in Obj C is) @interface UITableViewCell

问题 I am using JPA with hibernate in my spring boot application. Whenever I try to fetch the enities using jpa methods, its returning the entity plus all the association present inside it. I wanted to fetch the associated entities on demand(lazy loading), so I have provided fetch=FetchType.LAZY in my domain class. But still its returning all the entries. Below is the code: Case.java @Entity @Table(name="smss_case") public class Case implements Serializable { /** * */ private static final long

问题 I'm looking for a way to conditionally load and keep the execution order of some javascript files (external and internal) without any library dependency. Basically, what I want to do is load them up only if the browser supports localStorage. Here's basically my shell: if (window.localStorage) { //load up JS only if it's needed var body = document.getElementsByTagName('body')[0], js1 = document.createElement('script'), js2 = document.createElement('script'), js3 = document.createElement(

问题 I am looking for a possible way to enable Lazy Loading in my DbContext but not all the time, only in specific instances when I need it. Because of issues like the N+1 queries with large datasets and JSON serialization traversing object properties and serializing my entire database I usually do not want Lazy Loading. However, in some instances I do want it. When generating reports I load a top-level object and many child objects in order to populate the report fields. Due to the nature of the

问题 my question is regarding JPA 2.0 with Hibernate, @OneToOne relationships and lazy loading. First my setup: Spring 3.0.5.RELEASE SprnigData JPA 1.0.1.RELEASE Hibernate 3.5.2-Final DBMS: PostgreSQL 9.0 I recently came across the fact, that a @OneToOne relationship can't be fetched the lazy way (FetchType.LAZY), at least not without byte code instrumentation, compile time weaving or the like. Many sites out there say this, for example: http://community.jboss.org/wiki

问题 I use lazyload() on my ecommerce website. lazyload() works great. I use this code to do that: $(function(){ $("img.lazy").lazyload({ effect : "fadeIn" }); }); Also there are some filter like color, price etc. which is run an ajax and show new result. When new result come, lazyload() doesn't work. I know that I have to use lazyload() with live(), delegate() or on(). But I am a newbie on jquery and I couldn't do that. Can anyone help me please? My jquery version is 1.7.2 and we can use on().

问题 I've got a database table Image with one huge column: Data . I'd rather lazy load that one column so I'm not querying all that when I get a list of all my images. I know I can put the data into its own column and entity like this: But, do I have to? 回答1: Yes I believe you do have to. I don't think it's possible with EF. You could make an explicit query for the columns you need, and then later for the data-column. Like the suggestion in this post: How to load varbinary(max) fields only when

问题 I m developing a book reader using the Lazy list project Here is Link Problem: I m getting this look of Lazy List Small pages in height and blurred image which is very difficult to read. I want this: It should look clear (not Blurred) and full page in height like this. I know: Lazy list loads the sample size of bitmaps. how can I get the images in full resolution which is about 600X921. I tried this but not helpful main.xml <ListView android:id="@+id/list" android:layout_width="wrap_content"

问题 I'm using EF6 code first. There are two tables, Lesson and LessonSections . The LessonSections table has a foreign key to Lesson.Id Here is the Lesson class with none important fields removed: public partial class Lesson { [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors")] public Lesson() { LessonSections = new HashSet<LessonSection>(); } [StringLength(50)] public string Id { get; set; } [System.Diagnostics.CodeAnalysis

问题 TLDR: Is there a thread-safe version of the Enumerator class in Ruby? What I'm trying to do: I have a method in a Ruby On Rails application that I wanted to run concurrently. The method is supposed to create a zip file containing reports from the site, where each file in the zip is a PDF. The conversion from html to PDF is somewhat slow, thus the desire to multi-thread. How I expected to do it: I wanted to use 5 threads, so I figured I would have a shared Enumerator between the threads. Each