lazy-loading

I have an old table that I'm working with, which looks like this: +------------------+--------------+------+-----+---------+-------+ | Field | Type | Null | Key | Default | Extra | +------------------+--------------+------+-----+---------+-------+ | BINARY_DATA_ID | varchar(255) | NO | PRI | | | | BINARY_DATA | longblob | YES | | NULL | | | BINARY_DATA_NAME | varchar(255) | YES | | NULL | | +------------------+--------------+------+-----+---------+-------+ The main problem with this is that the BinaryData Java class loads the BINARY_DATA column, even if I only require the BINARY_DATA_NAME . I

I just found out that lazy loading in Entity Framework only works from the thread that created the ObjectContext . To illustrate the problem, I did a simple test, with a simple model containing just 2 entities : Person and Address . Here's the code : private static void TestSingleThread() { using (var context = new TestDBContext()) { foreach (var p in context.Person) { Console.WriteLine("{0} lives in {1}.", p.Name, p.Address.City); } } } private static void TestMultiThread() { using (var context = new TestDBContext()) { foreach (var p in context.Person) { Person p2 = p; // to avoid capturing

I want to implememt a tree view with has the following structure..... [RootNode] <---- Root of tree --[ParentNode P1] <---- Object of ModelClass P1 ----[ChildNode C1] <----- Object of ModelClass C1 (have children of different type as well) ----[ChildNode C2] <----- Object of ModelClass C2 (have children of different type as well) ----[ChildNode C3] <----- Object of ModelClass C3 (have children of different type as well) --[ParentNode Q1] <---- Object of ModelClass Q1 ----[ChildNode B1] <----- Object of ModelClass B1 (have children of different type as well) ----[ChildNode B2] <----- Object of

I have Hibernate Entities that look something like this (getters and setters left out): @Entity public class EntityA { @ManyToOne(fetch = FetchType.LAZY) @JoinColumn(name = "parent_id") private EntityB parent; } @Entity public class EntityB extends SuperEntity { @OneToMany(mappedBy = "parent") @Fetch(FetchMode.SUBSELECT) @JoinColumn(name = "parent_id") private Set<EntityA> children; } @MappedSuperclass public class SuperEntity { @Id @GeneratedValue(strategy = GenerationType.AUTO) @Column(name = "id") private long itemId; } When I query for EntityA it loads fine, with the parent association

I have successfully implemented lazy-loading of images in my app using the example provided by apple here . The thing is that, I want the image to load as I am scrolling, but the image loads into the cell only when I finish dragging (Release my finger from the screen. Until then the cell remains empty). I have modified the code as follows: - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { //NSLog(@"cell for row at indexpath, size - %f, current - %d", flowTable.contentSize.height, self.current); NSString *CellIdentifier = @"FlowCell";

I tried to use custom reuse strategy in my angular2 project, but I found it doesn't work with lazy module loading . Anyone who know about this? My project is angular 2.6.4 reuse-strategy.ts import {RouteReuseStrategy, ActivatedRouteSnapshot, DetachedRouteHandle} from "@angular/router"; export class CustomReuseStrategy implements RouteReuseStrategy { handlers: {[key: string]: DetachedRouteHandle} = {}; shouldDetach(route: ActivatedRouteSnapshot): boolean { console.debug('CustomReuseStrategy:shouldDetach', route); return true; } store(route: ActivatedRouteSnapshot, handle: DetachedRouteHandle):