A user adds a record to a table but not shown in B users table when a refre

Flow
1

Hi My code is as follows

I have a notes table and i want to update the table every 2 sceonds so that concurrent users can see the added notes for a specific object.

I have refresher which runs and it doesnt seem to be getting the updates. But when the refresh button is clicked I could see the added notes.

When User A adds a note, user A can see the added notes in the table. But User B cannot see, he simply has to click refresh to see the new notes added by A.

the code in the addnotespopover is this.
VaadinSession.getCurrent().lock();
NoteResponse noteResponse = (NoteResponse) response.getData();
Note newNote = (Note) noteResponse.getNote();
mainTable.getContainerDataSource().addItem(newNote);
mainTable.setSortContainerPropertyId(“created”);
mainTable.sort();
mainTable.refreshRowCache();

finally {
VaadinSession.getCurrent().unlock();
}

This is the method for the refresher
if (VaadinSession.getCurrent().getAttribute(FUser.class) != null) {
final Refresher refersher = new Refresher();
refersher.setRefreshInterval(applicationProperties.getNotesRefreshTime());
refersher.addListener(new RefreshListener() {
@Override
public void refresh(Refresher source) {

                if (noteTable != null) {
                    notesTableLayout.removeComponent(notesPanel);
                    notesTableLayout.removeComponent(addNoteButton);

                    notesTableLayout.addComponent(buildNotesPanel());
                    
                    notesTableLayout.addComponent(addNoteButton);
                }
            }
        });

        MobileUI.getApp().addExtension(refersher);

Can someone please advise me?

2

Have you enabled push (@Push annotation on UI class)?

And in your refresh method run code that performs UI changes in UI.access()

refersher.addListener(new RefreshListener() { public void refresh(Refresher source) { ui.access( new Runnable() { public void run() { if (noteTable != null) { notesTableLayout.removeComponent(notesPanel); notesTableLayout.removeComponent(addNoteButton); notesTableLayout.addComponent(buildNotesPanel()); notesTableLayout.addComponent(addNoteButton); } } }) } }) By the way, I think you don’t need to lock and unlock session when adding note.

Regards
Marco