db4o: Client-Server and Concurrency
So far we’ve always used a single object container. This it the simplest way to used db4o. Just open an embedded database an use it. In this post I’ll give…
Read moreLINQ: cast-catch
In this post I’ll explain a little catch in LINQ, which may some beginners fall into: What’s the difference between those two queries? IEnumerable<Person> listOfEntities = LoadData(); // First version…
Read moreSoap & Skin, My Pal Satan, Erlang and nullptr
My Pal Satan is a little comedy web-series about a Donna and her roommate, Satan. However there are only six episodes =( On infoq.com a talk from Joe Armstrong about…
Read moredb4o: Queries in Java or Queries Without LINQ
Before I continue with client-server concurrency I explain how to run queries against a db4o database without LINQ. Most of the stuff in db4o works on every platform. The API…
Read moredb4o: Single Object-Container Concurrency
Today nearly every application has some concurrent parts. In a classic desktop-application some work is done in the background to keep the application responsive. In a web-application more than one…
Read moreFree IntelliJ-IDEA and YouTrack Pricing
IntelliJ IDEA, the best IDE in the world, is now available for free. Yeah \o/. How cool is that? Even better, it’s has a Apache 2 License. However lots of…
Read moreMaybe-Monad (Or The Better NullReference)
The Maybe-Monad sounds like some magic, but it’s something terrible simple. Its a computation which returns a result or ‘Nothing’. Often the a null-reference is used to represent ‘Nothing’. This…
Read moredb4o: Persistent Classes Tips
In the last four posts I’ve mostly talked about db4o itself and how to used it. All this is actually just the necessary evil for our goal, to persist our…
Read moreRx-Framework, Lombok & Music For Everyone
There’s a new talk/interview about the Rx-framework for reactive programming on channel 9. Yes, it’s the third time I link talks about the same topic here (here is the first…
Read moredb4o: Transactions
So I showed the basics, explained the activation-system and pointed out how db4o manages object-identities. So far so good, but I’ve never explain a very important feature of most databases, the…
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