Trace: • First JVx Application
This is an old revision of the document!
In the following paragraphs, we will show you how to create your first JVx application with minimal effort and code.
The application's task is to display data from a database table and make the data editable.
Before you start you will need the following libraries and tools:
- Eclipse IDE (>= 3.4) with JDT (recommended: Eclipse IDE for Java EE developers)
- JDK 6.0 (1.6) or higher
- HSQLDB library (http://www.hsqldb.org)
For our JVx sample application we need the following parts:
- Business object
- Database connection
Create an application
We need an application as a frame for the client. Each application must implement the interface javax.rad.application.IApplication
. In our example, we derive from the standard implementation com.sibvisions.rad.application.Application
, whereby we use the following code:
- FirstApplication.java
package apps.firstapp; import javax.rad.application.genui.UILauncher; import javax.rad.genui.UIImage; import javax.rad.genui.component.UIButton; import javax.rad.genui.container.UIToolBar; import javax.rad.genui.menu.UIMenu; import javax.rad.genui.menu.UIMenuItem; import javax.rad.remote.IConnection; import com.sibvisions.rad.application.Application; import com.sibvisions.rad.server.DirectServerConnection; /** * First application with JVx, Enterprise Application Framework. * <p/> * @author René Jahn */ public class FirstApplication extends Application { //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Initialization //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /** * Creates a new instance of <code>FirstApplication</code> with a technology * dependent launcher. * <p/> * @param pLauncher the technology dependent launcher */ public FirstApplication(UILauncher pLauncher) { super(pLauncher); } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Overwritten methods //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /** * {@inheritDoc} */ @Override protected IConnection createConnection() throws Exception { return new DirectServerConnection(); } /** * {@inheritDoc} */ @Override protected String getApplicationName() { return "firstapp"; } /** * {@inheritDoc} */ @Override protected void afterLogin() { super.afterLogin(); //configure MenuBar UIMenu menuMasterData = new UIMenu(); menuMasterData.setText("Master data"); UIMenuItem miDBEdit = createMenuItem ("doOpenDBEdit", null, "DB Edit", UIImage.getImage(UIImage.SEARCH_LARGE)); menuMasterData.add(miDBEdit); //insert before Help getMenuBar().add(menuMasterData, 1); //configure ToolBar UIToolBar tbMasterData = new UIToolBar(); UIButton butDBEdit = createToolBarButton ("doOpenFrame", null, "DB Edit", UIImage.getImage(UIImage.SEARCH_LARGE)); tbMasterData.add(butDBEdit); getLauncher().addToolBar(tbMasterData); } //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ // Actions //~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /** * Opens the edit screen. * <p/> * @throws Throwable if the edit frame can not be opened */ public void doOpenDBEdit() throws Throwable { DBEditFrame frame = new DBEditFrame(this); configureFrame(frame); frame.setVisible(true); } } // FirstApplication