Java Snippet on Server

[KKERROXXX]

Hi everyone,

When I use Java Snippet node for showing a pop up message, it works in Analytics Platform. But, when I run this workflow on knime server the pop up screen does not open like doesn’t exists. Can anyone have idea?

Best,

[dnaki]

Hi @KKERROXXX . Are you by chance using JOptionPane from within Java Snippet to show a popup dialog? If so, JOptionPane is part of the Java Swing UI framework, which in this scenario only works on the KNIME desktop client, not in a web browser such as in the KNIME web portal.

[KKERROXXX]

Hi @dnaki,

Thank you for the quick response. Yes, I use JOptionPane within Java Snippet. I wonder that Is there an another solution to show up a popup message on KNIME Server?

Best,

[marvin.kickuth]

Hi @KKERROXXX

there is a KNIME way of doing this: Components!
You can set up components with multiple interactive views and widgets.
Here is the documentation KNIME Components Guide and a short how-to video on youtube.

These offer easy to build, yet very powerful data visualizations, that can also be shared and reused

Kind regards
Marvin

[enr0c]

Hello Marvin,
would that mean that its not possible to implement method #4 from this forum entry on the server with a popup when executing the workflow?

Custom Web Services Authentication and Credentials variable

Hi @semon , I’m not sure how you can force the workflow to save as unexecuted. In terms of popup, alternatively you can also use a Java popup for input of the password. I created a 4th Method for this, and it will popup a prompt for the password like this when you run the workflow: [image] This is what the 4th Method looks like: [image] The Java Snippet looks like this: [image] It will capture the password and write to the column “password”, which I then convert to a variable. Here’s th…

That would be great if that would work.

BR
Cornelius

[bruno29a]

Hi @enr0c , the popup that you are referring to in the other thread can be implemented on the server, however, this popup only works on the back-end (that is via Knime AP), not on the front-end (web portal).

For front-end, you can use interactive nodes

[marvin.kickuth]

Hi Cornelius (@enr0c),

it is as @bruno29a says. Plain Java views won’t be shown in the WebPortal. There, you can use the blue visualization nodes and combine them into components in order to create a page on the WebPortal (one page per component). More details on the WebPortal can be found here: KNIME WebPortal User Guide

Note that we offer a generic JavaScript view node that can be used to code your own visualizations (see also examples on the hub):

Generic JavaScript View

Kind regards
Marvin

ps. if you want to use custom CSS code, see also CSS Styling for JavaScript Views and Widget/Quickform Nodes (Legacy).

[enr0c]

Many thanks @marvin.kickuth
We have designed a solution using JavaScript view node including CSS.
Works just fine.
Thank you