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.

Where to include a web components css file when integrating a third party w by Martin Vyšný, 1 week ago
Recent Posts
Vaadin Forum1. Vaadin Flow - Java

vaadin-grid for data sources of unknown size ?

Catalin Stavaru
6 years ago Feb 27, 2016 5:56pm

Hello,

I am developing a new application with Polymer and found the vaadim-grid element to be quite powerful and (almost) what I need for this project.

However, my data source for the grid cannot provide the total number of records, providing this value will be too computationally expensive. 

I did find some other components on the Internet that can work in such manner, but they leave too much work to the developer.

If I don't set the data source size to the vaadim-grid element, the data source callback is called 

Can the vaadim-grid element work with a data source of unknown size ? 

Thanks !
 

Catalin Stavaru
6 years ago Feb 28, 2016 12:21am

Ok, so I found a (somewhat recent) closed grid issue that added just the support needed for infinite scrolling, thanks to the author for this. It's here:

https://github.com/vaadin/vaadin-grid/issues/265

However, after some scrolling down (and additional data loading), when trying to scroll back to the top of the grid, I get some exceptions thrown from the vaadin-grid javascript: "There is a gap between Class$.. and Class$..". Happens in both Chrome and Edge. Any idea what happens ? Thanks !