Contact us
Get started
Loading...
Important Notice - Forums is archived

To simplify things and help our users to be more productive, we have archived the current forum and focus our efforts on helping developers on Stack Overflow. You can post new questions on Stack Overflow or join our Discord channel.

Product icon
TUTORIAL

Vaadin lets you build secure, UX-first PWAs entirely in Java.
Free ebook & tutorial.

Calling javascript synchronously by Enver Haase, 1 month ago
Recent Posts
Vaadin Forum3. Vaadin 6, 7, 8Framework Data Binding

Add button to table by QueryContainer

Stefano Ferrari
1 decade ago Apr 28, 2010 8:13am

Hi to all,

I need to add three Button over each row of my table to manage each record by that buttons: using IndexedContainer I've no problem to do that but performance is not that I want.

I've to load about 100.000 record from MySql and using QueryContainer is faster, but I can't add the button using this container.

How can I add three Button in three new Coloumn for each record using QueryContainer?

Thanks, Stefano

Henri Sara
1 decade ago Apr 28, 2010 8:42am

Use generated columns like in this example - click "View Source", the links in the last column are components.

See also the chapter on Table in the book.

+1
Stefano Ferrari
1 decade ago Apr 28, 2010 9:19am

WOW!!!!!

It work perfectly and very faster :lol:

Thanks a lot! ;-)
Have a nice day

Last updated on Apr, 29th 2010
Stefano Ferrari
1 decade ago Apr 29, 2010 4:42pm

Ah, a last question. How can I order my row by coloumn value using QueryContainer?

Thanks, Stefano.

Henri Sara
1 decade ago Apr 30, 2010 5:59am

The QueryContainer does not implement Container.Sortable, so the table will not show the sort arrows for it etc. As the query can be an arbitrary (and potentially complex) SQL query, it would be quite hard to implement sorting on top of it reliably.

If something else controls the sorting, you could simply generate other queries and switch the container to a new instance. However, then you might also need to take care of the selection etc.

Alternatively, you could consider using some other database container, such as the JPAContainer (licensed under AGPL or a commercial license) or one of the other containers in the Directory.