JVx Code Snippets

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Access a DBStorage without JVx Server, Lifecycle Object, Security e.g. for Unit tests

//configure DB access
DBAccess dba = new DBAccess();
dba.setUrl("...");
dba.setUsername("user");
dba.setPassword("pwd");
dba.open();
 
//configure storage for Table USERS
DBStorage dbs = new DBStorage();
dbs.setFromClause("USERS");
dbs.setDBAccess(dba);
dbs.open();
 
//direct object connection for direct method calls
DirectObjectConnection con = new DirectObjectConnection();
con.put("users", dbs);
 
//client connection for RemoteDataBook access to the storage
MasterConnection macon = new MasterConnection(con);
macon.open();
 
RemoteDataSource rds = new RemoteDataSource(macon);
rds.open();
 
RemoteDataBook rdbApps = new RemoteDataBook();
rdbApps.setDataSource(rds);
rdbApps.setName("users");
rdbApps.open();

Sometimes we need an application without overhead, e.g for Vaadin UI.

public class SimpleApplication extends Application
                               implements IExceptionListener
{
   //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   // Class members
   //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
   /** the main/content panel. */
   private UIPanel panMain;
 
   //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   // Initialization
   //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
   /**
    * Creates a new instance of <code>SimpleApplication</code>.
    * 
    * @param pLauncher the launcher
    */
   public SimpleApplication(UILauncher pLauncher)
   {
      super(pLauncher);
 
      setName("Simple application");
 
      init();
   }
 
   /**
    * Initializes the application.
    */
   private void init()
   {
      ExceptionHandler.addExceptionListener(this);
 
      panMain = new UIPanel();
      panMain.setLayout(new UIBorderLayout());
 
      panMain.add(YOUR COMPONENT, UIBorderLayout.CENTER);
 
      setLayout(new UIBorderLayout());
      add(panMain);
   }
 
   //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   // Interface implementation
   //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 
   public IContainer getContentPane()
   {
      return panMain;
   }
 
   public <OP> IContent showMessage(OP pOpener, 
                                    int pIconType, 
                                    int pButtonType, 
                                    String pMessage, 
                                    String pOkAction, 
                                    String pCancelAction) throws Throwable
   {
      System.out.println(pMessage);
 
      return null;
   }
 
   public void handleException(Throwable pThrowable)
   {
      System.out.println(CommonUtil.dump(pThrowable, false));
   }
 
}   // SimpleApplication