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Google Dev Day2007
1. The GWT bet ... Luc Claes CTO ContactOffice.com Google Developer Day 2007
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7. Everything can be shared with users and groups! Sophisticated Access Right Model at user level Applications : Individual user, Families, Associations, Companies, Departments, All kinds of teams, ...
22. M odel - V iew - R emoting Remoting Model View notify Synchronous call Add listener xxxService xxxServiceAsync DTOs Shared between front-end and back-end Asynchronous call with command piggybacking Front-end only AbstractModel ModelObject ModelFolder abstractions Asynchronous call AsyncCallback
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24. 'Tip of the Day' (2) public void save(Command chainCommand) { getCalendarService().saveEvent(this, new COAsyncCallback( new GetEventDetailsCallback(), chainCommand)); } public static void showCreationDialog(Event event) { event.save( new ShowDialogCommand(event)); } private static class ShowDialogCommand implements Command { private final Event m_event ; public ShowDialogCommand(Event event) { m_event = event; } public void execute() { new EventPropertiesDialog(m_event).showCentered(); } } EventPropertiesDialog.java (View) : Event.java (Model) : Create an event object in the back-end, then edit its properties
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27. New GWT based Interface Horizontal splitter COMenuBar extends MenuBar Frame
34. New calendar D&D event Access group & member's calendars Resizeable & overlap
35. Back-end (1) RemoteServiceServlet (GWT) GWTServlet AbstractHandler MailHandler MailServices … Instantiates (on each RPC invocation) CalendarHandler CalendarServices … HTTP request/session User credentials DB Transactions handling RemoteService (GWT) Actual RPC implementation ~ Invokes the Business Logic
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