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db4o: Queries in Java or Queries Without LINQ

By gamlerhart October 26, 2009 db4o

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…

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db4o: Single Object-Container Concurrency

By gamlerhart October 15, 2009 db4o

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…

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Free IntelliJ-IDEA and YouTrack Pricing

By gamlerhart October 15, 2009 java, tools

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…

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Maybe-Monad (Or The Better NullReference)

By gamlerhart October 12, 2009 .NET

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…

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db4o: Persistent Classes Tips

By gamlerhart October 6, 2009 db4o

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…

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Rx-Framework, Lombok & Music For Everyone

By gamlerhart October 4, 2009 .NET, 42, channel 9

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…

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db4o: Transactions

By gamlerhart October 1, 2009 db4o

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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db4o: Object-Identity and High-Level-Caching

By gamlerhart September 28, 2009 db4o

In the last two posts (#1, #2) we never ever used anything like an id for any object. So how the hell does db4o identify objects? How does it ensure…

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C vs Java, Doctor Who and Slow Club

By gamlerhart September 27, 2009 42, java

Normally C- vs. Java-performance comparisons are wonderful and entertaining flame-wars. However this blog-post is very reasonable and each argument justified. I’ve stumbled by accident on a hand-cam-quality teaser of Doctor…

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db4o: Activation- & Update-Depth

By gamlerhart September 22, 2009 db4o

Activation is a very basic concept in db4o. In this post I’ll illustrate what it is, why it’s there and how you handle it. (All posts of this series: the…

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