db4o Developer Community

Hi, If you take a look in our svn repository you'll see that lots of changes were applied to configuration code (starting with version 7.7). Take it easy, we kept the ''old'' configuration interface in place; we just deprecated it, so update your code to use the new interfaces if you have the chance ;) In this post I'd like to discuss some ...

As you probably already know :), Sharpen is a tool (developed by db4o) that aims at easing development efforts by translating java source code into C#. This tools make it easier to provide native solutions in either Java/.Net platforms. While talking about how to run Sharpen test suite in this post I told that I'd show how to improve these ...

Hi, Just to let you know I've posted about Transparent Activation / Persistence to db4o blogs ;) Adriano

Hi, I'm a strong believer that the DIY (Dot it yourself) philosophy helps to improve knowledge on the topic you are working on. So if you If you are a developer using (or planing to use) db4o (and have the time), I highly recommend to try do build it yourself as explained here. One point that can be further explored is the possibility to run the ...

Hi, In the first installment of this series I presented the idea of having a typesafe way to configure db4o. In the second one, I explored how we could use expression trees to figure out a property name being accessed. In this post I'll address the issue on how to dive into the property's IL (intermediate language) to come up with a field name ...

Hi, Today's post is in the series ''what is wrong with this code'' but before presenting the actual problematic code I want to give some background, so bear with me. At Db4o we run migration tests (regularly) in order to guarantee that we are able to load (and query) databases created by older versions of Db4o engine. The way it's accomplished ...

Hi. If you start using sharpen, you'll probably find some limitation / bug and, maybe, want to take a look into the issue. In this case the best approach (IMHO) would be to i) start a discussion in Sharpen Forum and, if appropriated (in the case there's no issue filed already), ii) file a new Jira issue into our issue tracking system. Next, ...

In my last post I proposed to derive field names from a property accessor in order to gain type safety and compiler support when configuring some aspects of D4bo. So, given the following class:public class Test { private int _age; public int Age { get { return _age; } set { _age = value; } } }we could use the following ...

Hi! I've just updated the Linq Console application! Now you don't need to copy your model assemblies to Linq Console folder anymore! You can use the load command as follow: :load ''c:\my projects\test\Test.Model.dll'' and the application will be able to load it :) The source code can be downloaded from our svn ...

As of today, Db4o uses strings to reference fields in some scenarios such: SODA queries Configuration See the sample bellow: IConfiguration cfg = Db4oFactory.NewConfiguration(); cfg.ObjectClass(typeof(Test)).ObjectField(''_age'').Indexed = true;IMHO, using strings in these situations is sub-optimal as: Such solution relies in ...