GWT> 2.4 RequestFactory不保存子对象更改 [英] GWT >2.4 RequestFactory not saving child object changes

问题描述

我有一段时间以来一直在GWT 2.4上运行的项目（以及之前的2.0版本）。当我将它切换到GWT 2.5或2.6时，附加到我的主实体的子对象不再保存对它们所做的更改。我不更改任何代码，但在2.4和2.6之间切换，它会中断。我相信这些更改不会发送到服务器。我正在看POST数据，看起来不完整，错过了我在v2.4上发送的更改。

是否有从2.4-2.5更改RequestFactory会导致此问题？我建立它的方式是不合适的设计？

以下是一个取回/更新模式示例：

  //从服务器获取对象
 MyEntityRequest request = App.getRequestFactory（）。myEntityRequest（）; 
 MyEntityProxy myEntity; 
 request.get（id）.with（child）。fire（new Receiver< MyEntityProxy>（）{
 @Override 
 public void onSuccess（MyEntityProxy response）{
 request = App.getRequestFactory（）。myEntityRequest（）; 
 myEntity = response; 
} 
}）; 
 
 //编辑客户端.. 
 
 //保存更新的对象
 myEntity = request.edit（myEntity）; 
 myEntity.childEntity.setName（new value）; 
 request.save（myEntity）.fire（new Receiver< MyEntityProxy>（）{
 @Override 
 public void onSuccess（Void）{} 
}）; 
  

示例请求界面：

  @Service（value = MyEntityDao.class，locator = DaoLocator.class）
 public interface MyEntityRequest extends RequestContext {
 Request< Void>保存（MyEntityProxy实体）; 
} 
  

域对象：

  @ProxyFor（MyEntity.class，locator = DomainObjectLocator.class）
 public interface MyEntityProxy extends EntityProxy {
 Integer getId（）; 
设置< ChildProxy>的getChildren（）; 
 void setChildren（Set< ChildProxy> children）; 
 
 $ b @ProxyFor（Child.class，locator = DomainObjectLocator.class）
 public interface ChildProxy extends EntityProxy {
 Integer getId（）; 
 String getName（）; 
 void setName（String name）; 
 
 $ / code> 

服务器对象：



  @Entity 
 @Table（name =MyEntity）
 @BatchSize（size = 25）
 public class MyEntity extends DomainObject {
 @OneToMany（mappedBy =myEntity）
 @BatchSize（size = 25）
 @Cascade（CascadeType.ALL）
 private Set< Child>儿童; 
 
  

服务器持续存在：



  public static void save（MyEntity myEntity）{
 
 Session session = HibernateUtil.getSessionFactory（）。getCurrentSession（）; 
 session.beginTransaction（）; 
 
尝试{
 myEntity =（MyEntity）session.merge（myEntity）; 
} catch（Exception e）{
 e.printStackTrace（）; 
 session.getTransaction（）。rollback（）; 
} finally {
 session.getTransaction（）。commit（）; 
} 
} 
  




解决方案

它可能与 https://code.google.com有关.com / p / google-web-toolkit / issues / detail？id = 7827



TL;是的，2.5有一些变化。


I have a project that has been running on GWT 2.4 for some time (and 2.0 etc before that). When I switch it to GWT 2.5 or 2.6, child objects attached to my main Entity no longer save changes made to them. I don't change any code, but switching between 2.4 and 2.6, it breaks. I believe the changes don't get sent to the server. I'm watching the POST data, and it seems incomplete, missing the changes that I see being sent when on v2.4.

Are there changes to RequestFactory from 2.4-2.5 that would cause this? Something in the way I built it out that was not proper design? I appreciate any feedback!

Here's a sample retrieve/update pattern:

// Retrieve object from server
MyEntityRequest request = App.getRequestFactory().myEntityRequest();
MyEntityProxy myEntity;
request.get(id).with("child").fire(new Receiver<MyEntityProxy>() {
  @Override
  public void onSuccess(MyEntityProxy response) {
    request = App.getRequestFactory().myEntityRequest();
    myEntity = response;
  }
});

// Edits made client side..

// Save updated object
myEntity = request.edit(myEntity);
myEntity.childEntity.setName("new value");
request.save(myEntity).fire(new Receiver<MyEntityProxy>() {
  @Override
  public void onSuccess(Void) { }
});

Example Request interface:

@Service(value = MyEntityDao.class, locator = DaoLocator.class)
public interface MyEntityRequest extends RequestContext {
  Request<Void> save(MyEntityProxy entity);
}

Domain objects:

@ProxyFor(MyEntity.class, locator=DomainObjectLocator.class)
public interface MyEntityProxy extends EntityProxy {
  Integer getId();
  Set<ChildProxy> getChildren();
  void setChildren(Set<ChildProxy> children);
}

@ProxyFor(Child.class, locator=DomainObjectLocator.class)
public interface ChildProxy extends EntityProxy {
  Integer getId();
  String getName();
  void setName(String name);
}

Server object:

@Entity
@Table (name="MyEntity")
@BatchSize(size=25)
public class MyEntity extends DomainObject {
  @OneToMany (mappedBy = "myEntity")
  @BatchSize(size=25)
  @Cascade(CascadeType.ALL)
  private Set<Child> children;
}

Server persist:

public static Void save(MyEntity myEntity) {

  Session session = HibernateUtil.getSessionFactory().getCurrentSession();
  session.beginTransaction();

  try {
    myEntity = (MyEntity) session.merge(myEntity);
  } catch (Exception e) {
    e.printStackTrace();
    session.getTransaction().rollback();
  } finally {
    session.getTransaction().commit();
  } 
}

解决方案

It probably has something to do with https://code.google.com/p/google-web-toolkit/issues/detail?id=7827

TL;DR: yes, there were some changes in 2.5.

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