Let me start with I have a solution, but I don't really think it is elegant. So, I am looking for a cleaner way to do this.
I have an EntityProxy displayed in a view panel. The view panel is a RequestFactoryEditorDriver only using display mode. The user clicks on a data element and opens a popup editor to edit a data element of the EntityProxy with a few more bits of data than is displayed in the view panel. When the user saves the element I need the view panel to update the display.
I ran into a problem because the RequestFactoryEditorDriver of the popup editor flow doesn't let you get to the edited data. The driver uses the passed in context and sends it to the server. The context returned out of flush only allows a Receiver even if you cast it to the type of context you stored in the editor driver in the edit() call. It doesn't appear to send and EntityProxyChanged
event either, so I couldn't listen for that and update the display view.
The solution I found was to change my domain object persist to return the newly saved entity. Then create the popup editor like this
editor.getSaveButtonClickHandler().addClickHandler(createSaveHandler(driver, editor));
// initialize the Driver and edit the given text.
driver.initialize(rf, editor);
PlayerProfileCtx ctx = rf.playerProfile();
ctx.persist().using(playerProfile).with(driver.getPaths())
.to(new Receiver<PlayerProfileProxy>(){
@Override
public void onSuccess(PlayerProfileProxy profile) {
editor.hide();
playerProfile = profile;
viewDriver.display(playerProfile);
}
});
driver.edit(playerProfile, ctx);
editor.centerAndShow();
Then in the save handler I just fire the context I get from the flush. While this approach works, it doesn't seem right. It would seem I should subscribe to the entitychanged
event in the display view and update the entity and the view from there. Also this approach saves the complete entity, not just the changed bits, which will increase bandwidth usage.
What I would think should happen, is when you flush the entity it should 'optimistically' update the rf managed version of the entity and fire the entity proxy changed
event. Only reverting the entity if something went wrong in the save. The actual save should only send the changed bits. In this way there isn't a need to refetch the whole entity and send that complete data over the wire twice.
Is there a better solution?
