Need locking when call VaadinSession getAttribute in Vaadin 7

Need locking when call VaadinSession getAttribute in Vaadin 7

By : Adrian Jaraine
Date : November 22 2020, 12:01 PM
will be helpful for those in need Adding to the answer by Patton. While I'm not an expert on this topic, I am posting my understanding after a thorough reading of the doc, and reading this post by Roland Krüger.
Upshot: Moot Question
code :

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Optimistic locking in vaadin and mysql db

Optimistic locking in vaadin and mysql db

By : Neeraj Agrawal
Date : March 29 2020, 07:55 AM
I hope this helps . If you are using JPA or its implementation you should be able to annotate your beans with:
code :
private Long version;
What does this warning mean in Vaadin: "Ignoring RPC call for disabled connector com.vaadin.ui.Window"?

What does this warning mean in Vaadin: "Ignoring RPC call for disabled connector com.vaadin.ui.Window"?

By : searchingforpants
Date : March 29 2020, 07:55 AM
Hope that helps When you disable a component, the disabled state is handled both on the client and the server side, meaning, a component isn't just visually disabled, but the server also refuses to handle any requests to a disabled component.
The warning you are seeing means, that there is an RPC request (HTTP request from the client-side) that is targeted for a disabled component. Since the component is disabled, the RPC request will be ignored.
How to configure Vaadin project to use Vaadin-spring-boot-starter with latest Vaadin framework

How to configure Vaadin project to use Vaadin-spring-boot-starter with latest Vaadin framework

By : user7136202
Date : March 29 2020, 07:55 AM
seems to work fine The problem was that I should change the repository because I want to use a prerelease version. To do this the below lines should be added to repository in pom file:
code :
        <name>Vaadin Pre-releases</name>

        <name>Vaadin Pre-releases</name>
<!-- ===============================Spring dependency======================================= -->

<!-- ============================Vaadin dependencies=============================== -->
Can't compile Vaadin project anymore ( Failed to execute goal com.vaadin:vaadin-maven-plugin )

Can't compile Vaadin project anymore ( Failed to execute goal com.vaadin:vaadin-maven-plugin )

By : Ryan Olaveson
Date : March 29 2020, 07:55 AM
may help you . After various tries, I've found that the problem was our company proxy.
After disconnecting my laptop from company network, and connecting it outside of it, directly on internet, I could compile without problems.
UI / VaadinSession timeout

UI / VaadinSession timeout

By : Aqualiker
Date : October 04 2020, 09:00 PM
I hope this helps . My problem was the vaadin.servlet.heartbeatInterval property in the application.properties. Looks like the correct name is vaadin.heartbeatInterval. After changing the property name everything works as expected.
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