Articles

In the first part of this post, I wanted to show how easy it is to access information from the currently logged in user and store this information in an action the user executes (who created/changed a record). Now, what happens, if we have several groups of users (roles)? Well, I could create some IF..ELSE block for each role, but this would probably be not a good idea. A much better approach is to create a base class within the model and inherit all roles from this. So, the model could for instance look like this: ...

Almost any business application I delivered contains some kind of audit information. Depending on the size and the type of application this information is more or less sufficiently distinctive. Some typical information is almost always “who did what when?”. Sometimes a “why” would also be a justifiable question, but this is out of the scope for now. So, by using a model driven software development approach along with OlivaNova, this is easy. Let’s say, I want to create a new customer in a small CRM system. The class I created for the customer looks like this: ...

If you want to learn more about model driven software development and how to create your first “Hello World!” example, then please have a look at these tutorials. They explain how to start using the OlivaNova Modeler. All tutorials are available here: https://www.care-t.com/Evaluation/index.asp?menu=2

Today I learned an interesting feature of JavaScript along with Firebug. Instead of using “alert” to display some trace information, you can use “console.log (“my message”);”. Together with the free web development tool Firebug, this information can then be shown in Firebug’s console window. This is extremely helpful when trying to debug some AJAX code. Please visit this website to get more information. Saved my day ;-)

An Evaluation Version for OLIVANOVA products is available for everybody on CARE’s website. CARE stands for Computer Aided Requirements Engineering and is the producer of the MDA product OLIVANOVA. OLIVANOVAEvaluation Version consists of: OLIVANOVA Modeler Evaluation Version setup OLIVANOVA Transformation Engines services available for 30 days A flash demo that explains the OLIVANOVA development lifecycle from scratch. A set of tutorials that explains how to model and generate a sample application. A set of howtos that explains how to deploy the obtained source code. The OLIVANOVA Evaluation Version is available from the CARE website. This site contains two tabs: ...

If you want to learn more about model driven architecture/model driven development in general and especially integranova/OlivaNova you are more than welcome to join us on two of the next roadshows in Munich/Germany and Düsseldorf/Germany. For more information and a detailed agenda please visit integranova’s website.

While playing around with some XMI (XML Metadata Interchange) importing/exporting functionality, I found this great blog: Modeling LAnguages (original URL https://modeling-languages.com). His service to convert from one XMI format to another is just awesome. Have a look at this site: XMI2 - A tool for exchanging UML models among CASE tools (original URL https://modeling-languages.com/content/xmi2-tool-exchanging-uml-models-among-case-tools).

Here is a nice conflict between Oracle products. I installed “Oracle Database 10g Express Edition” along with “Oracle Containers 4 Java” as the application server to run my J2EE app on. I installed the database engine first and then configured OC4J. OC4J needs an environment variable called ORACLE_HOME in order to run. This needs to point to the folder where you unzipped it. Everything worked just fine at this stage . ...

I finally managed to add this project on sourceforge … here is the link

I currently ran into an interesting issue when installing MS SQL Server 2008. During the initial checks at startup of the installation process I got the following error: “Restart required”. So I restarted my computer but without success. I got exactly the same error message again. I found out that this happens due to a wrong registry entry. In order to get the prerequisite-checks to succeed I had to delete the value of the following registry entry: ...