Today I had a hard time implementing time-consuming processes with AJAX status updates. I stripped down everything to a minimal working example. The technologies used in this example are
- Seam 2.2.2
- Richfaces 3.3
- Quartz 1.6
So here is what I wanted to achieve: The user of my application should click a button and in the background, a long running process should do some database stuff. Since this could take a while, I wanted to show some progress to the user. I did not want a progress bar, but I wanted to display some text to the user, depending on what the long-running tasks current status was.
I stripped it all down to an minimal example, which starts a long running process (huge for loop which generates random UUIDs) when a button is clicked and displays the current UUID to the user. With this basic example I hope you can get the ideas behind the a4j:poll component and how to do asynchronous long-running tasks with Seam. I must admit, that I was heavily(!) inspired by Andrey Chorniys blog post Show dynamic progress of time-consuming process in Seam/RichFaces where I shamelessly stole code and adapted it to my needs.
Here are the neccessary steps to get started
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Today I had a hard time implementing time-consuming processes with AJAX status updates. I stripped down everything to a minimal working example. The technologies used in this example are
Seam 2.2.2
Richfaces 3.3
Quartz 1.6
So here is what I wanted to achieve: The user of my application should click a button and in the background, a ...
Today I struggled with getting my TestNG Integration Tests working in my Seam 2 project. It’s not a very smart idea to use the production/development database for database tests and here’s why:
1. It is damn slow
2. We want to separate “real”/fake data from unit test data.
3. Under normal circumstances we want a clean database or a database with predefined data (see )
4. We want the unit tests to run everywhere. It should not matter if we have a Windows machine, a Linux Buildserver or a MacOSX. It should just work. Oh and I forgot. We even want it to work without Internet Connection.
5. …
So I decided to use HSQLDB for my Unit tests.
The first barrier was getting TestNG working. Mehr…
Today I struggled with getting my TestNG Integration Tests working in my Seam 2 project. The first barrier was getting TestNG working.
JBoss Seam bietet eine wirklich tolle Unterstützung für das Versenden von E-Mails an. Falls jemand nicht weiß wie das funktioniert, hier ist die Referenz dazu.
Wir wollten eine PDF an eine Mail anhängen, die Mail wurde jedoch ohne das Attachment versendet. Hier die Lösung:
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Wir wollten eine PDF an eine Mail anhängen, die Mail wurde jedoch ohne das Attachment versendet. Hier die Lösung:
We had a Problem with JBoss Seam 2.2.1.CR1 Logger. We were not able to log with parameters. (This is a known bug: https://jira.jboss.org/browse/JBSEAM-4606 )
I was looking for a tutorial which covers upgrading Seam, but I did not find any. So this is my solution how to upgrade from Seam 2.2.1.CR1 to Seam 2.2.1.CR2:
It is kind of a trivial job, because in normal case you just have to replace libraries. Here is a step to step tutorial:
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Wir hatten das Problem, dass in der Version 2.2.1.CR1 von JBoss Seam das Logging mit Parametern defekt war (siehe Seam Bugtracker: https://jira.jboss.org/browse/JBSEAM-4606 )
Deshalb hatte ich nach einem Howto gesucht um Seam upzugraden, leider habe ich nichts dazu gefunden. Deshalb hier meine Lösung:
