ZK UI update on Database data changes - zk

Question

How can I update data on UI when someting changes on database?
I want that my UI automatically update data when I changes record on my database (with a common database viewer) like Facebook does when someone friend publish something on the clipboard (without refresh)

Answer 1

You can use polling or pushing.
For pushing you could extend SelectorComposer
and apply to your zul
public class ComposerPush extends SelectorComposer<Component> {
private static final long serialVersionUID = 1L;
// wire components
#Wire
ZHighCharts chartComp;
// Basic Line
private SimpleExtXYModel dataChartModel = new SimpleExtXYModel();
public void startWorker() {
final Desktop desktop = Executions.getCurrent().getDesktop();
if (desktop.isServerPushEnabled()) {
} else {
desktop.enableServerPush(true);
if(timer != null)timer.cancel();
timer = new Timer();
timer.schedule(databaseCheck(), 0, 5000);
}
}
private TimerTask databaseCheck() {
return new TimerTask() {
#Override
public void run() {
updateInfo();
}
};
}
private void updateInfo() {
try {
Desktop desktop = chartComp.getDesktop();
if(desktop == null) {
timer.cancel();
return;
}
Executions.activate(desktop);
try {
**<your code in here>**
} finally {
Executions.deactivate(desktop);
}
} catch (DesktopUnavailableException ex) {
System.out.println("Desktop currently unavailable");
timer.cancel();
} catch (InterruptedException e) {
System.out.println("The server push thread interrupted");
timer.cancel();
}
}