Harry Kimpel
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OlivaNova application: performance comparison for H2 Database

Created: Nov 18, 2010
A couple of days ago I did some performance tests between Oracle 10g (Express) and Oracle TimesTen. As with any commercial products, there is some licensing and costs involved. Obviously, our idea was then to look for a more cost efficient solution in order to get the same results. We specifically looked at H2, a Java SQL Database. This DBMS can operate in several different modes such as embedded, server and in-memory and has compatibility modes for certain commcercial database products like DB2, MySql, MS SQL Server, Oracle and some others.

Windows Phone 7: syncing calendars between different devices

Created: Nov 18, 2010
A couple of days ago, I bought some new Windows Phone 7 (WP7) devices for my wife and myself. I really love the new look & feel and the live tiles and hubs.One of the things I kind of struggled was the ability to sync calendars on both of the devices. After entering your Windows Live ID, you already get your contacts, email and calendar. However, only the primary calendar is synced to the device.

Windows Phone 7: tickWell social networking

Created: Nov 18, 2010
If you care about privacy when sharing status updates then have a look at this Windows Phone 7 app named <strong>tickWell</strong>. tickWell is a social networking platform with a focus on privacy which enables you to record and share selected moments of your life.

OlivaNova application: performance comparison between Oracle 10g and TimesTen

Created: Nov 06, 2010
Just recently, I had been asked to compare the performance of Oracle 10g and Oracle TimesTen In-Memory database. We wanted to evaluate to what extent the performance of a mission critical system could be increased by using an in-memory database like Oracle TimesTen compared to a “regular” RDBMS like Oracle 10g. I used a sample application generated from OLIVANOVA in order to compare these different scenarios. The application is based upon a three-tier architecture with a JSF client, J2EE business logic and a RDBMS.

Microsoft ASP.NET Security Vulnerability: "padding oracle"

Created: Oct 27, 2010
Microsoft has released a security advisory about a vulnerability in ASP.NET. A security patch is already available here. Below are some details on how the vulnerability works: “To understand how this vulnerability works, you need to know about cryptographic oracles. An oracle in the context of cryptography is a system which provides hints as you ask it questions. In this case, there is a vulnerability in ASP.NET which acts as a padding oracle.

Silverlight 4 and WCF RIA Services generated from OlivaNova model

Created: Oct 21, 2010
As stated in a recent post, I’ve been able to create a Silverlight 4 client that accesses an OLIVANOVA generated business logic using WCF RIA Services. Well, the actual code to enable this scenario is in fact not that complicated (once you learned how to write Silverlight enabled WCF RIA Services). The big advantage for me is that the complete business logic can be generated with OLIVANOVA’s model driven software development approach.

Did you know that OlivaNova is able to create application information logs automatically?

Created: Oct 15, 2010
OLIVANOVA can generate code for application information logs automatically: for .NET environments OLIVANOVA uses the System.Diagnostics.Trace class included in the .NET Framework for J2EE platforms OLIVANOVA uses log4j

OlivaNova is compatible with TimesTen In-Memory database

Created: Oct 15, 2010
I just recently did some evaluation on <em>OLIVA<strong>NOVA</strong></em> (original URL https://www.care-t.com) along with TimesTen In-Memory Database as the persistence layer. OLIVANOVA is a model driven software development environment that generates code for business software_._ Certified database management systems include all major relational database management systems such as Microsoft SQL Server, Oracle, DB2 and so on. One of OLIVANOVA’s customers required instant responsiveness and very high throughput. So, this was a welcome opportunity for me to evaluate TimesTen, an In-Memory database.

Silverlight 4, WCF RIA Services and OlivaNova Business Logic

Created: Oct 13, 2010
To me, Silverlight has always been a fascinating technology. I started playing around with Silverlight back in September 2007. Since then, I always wanted to create a Silverlight user interface for OlivaNova. With the first versions, the lack of standard data controls made it really difficult to implement a data-driven application. A lot has changed since then and today the time is ripe to begin afresh. The software architecture basically looks like this:

Audit information specified in a model … part 2

Created: Oct 11, 2010
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.
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Disclaimer: The opinions expressed herein are my own personal opinions and do not represent my employer’s view in any way.