GWT RequestFactory：将接口继承到RequestContext中
我有我的 OrganizationRequestContext 接口，效果很好：
@Service(OrganizationDAO.class)
public interface OrganizationRequestContext extends RequestContext
{
Request<OrganizationProxy> findOrganization(Long id);
InstanceRequest<OrganizationProxy, Void> persist();
InstanceRequest<OrganizationProxy, Void> remove();
}
现在我想将最后两个函数放入我自己设计的 PersistentRequestContext 中，这样我就可以在客户端中以相同的方式对待所有 RequestContext code:
public interface PersistableRequestContext<T extends BaseProxy>
{
InstanceRequest<T, Void> persist();
InstanceRequest<T, Void> remove();
}
...
@Service(OrganizationDAO.class)
public interface OrganizationRequestContext extends RequestContext, PersistentRequestContext<OrganizationProxy>
{
Request<OrganizationProxy> findOrganization(Long id);
}
但这验证失败：服务器抱怨
[ERROR] com.activegrade.shared.data.PersistableRequestContext is not a RequestContext
如果我让 PersistableRequestContext 扩展 RequestContext，那么服务器抱怨它没有链接到任何特定的 DAO 服务。
在我的各种 RequestContext 接口中，除了 RequestContext 之外，还有什么方法可以扩展通用接口吗？
I have my OrganizationRequestContext interface, which works great:
@Service(OrganizationDAO.class)
public interface OrganizationRequestContext extends RequestContext
{
Request<OrganizationProxy> findOrganization(Long id);
InstanceRequest<OrganizationProxy, Void> persist();
InstanceRequest<OrganizationProxy, Void> remove();
}
Now I want to take those last two functions and put them in a PersistentRequestContext of my own design so that I can treat all of my RequestContexts the same in my client code:
public interface PersistableRequestContext<T extends BaseProxy>
{
InstanceRequest<T, Void> persist();
InstanceRequest<T, Void> remove();
}
...
@Service(OrganizationDAO.class)
public interface OrganizationRequestContext extends RequestContext, PersistentRequestContext<OrganizationProxy>
{
Request<OrganizationProxy> findOrganization(Long id);
}
But this fails validation: the server complains that
[ERROR] com.activegrade.shared.data.PersistableRequestContext is not a RequestContext
If I make PersistableRequestContext extend RequestContext, then the server complains that it is not linked to any particular DAO service.
Is there any way to extend a common interface besides RequestContext in my various RequestContext interfaces?
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此问题已在 GWT 2.4 中修复。感谢谷歌！
http://code.google.com/p/google -web-toolkit/issues/detail?id=6035
This issue has been fixed in GWT 2.4. Thanks Google!
http://code.google.com/p/google-web-toolkit/issues/detail?id=6035