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Front Page News
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I think that 2008 was a great year for the JCR specification, but I expect 2009 will be a great year for adoption. I think Jackrabbit is quite a success. There are still places where databases are more appropriate, but now I'm seeing that there are more...
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I am looking for various embedded databases. Each database has good and bad sides. I even tried JDBM (ripped off from W3C Jigsaw and bit fixed inside - it is just few classes). All I need is very fast and embeddable engine (means, very small at footprint...
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I'm pretty happy with simplicity and performance of db4o so far. It seems like an ideal local, queryable persistence layer. The way it works does want to make me abstract my data model into simple data objects that are then converted into business entities....
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This blog post shows some indexing basics and performance tips by Arne Claassen . Among other things Arne shows you which assemblies to include to make sure your native queries can be optimized. Thanks Arne!...
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Arne Claassen has been playing with db4o under Mono and came up with a DLL for db4o v7.4 that works beautifully across .NET and Mono from a single build. See his blog post here ....
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"I had wide number of choices how to implement the persistence - using a file, a regular sql database, embedded database like HSQLDB or H2. I really wanted something simple, no extra server administration, table creation or O/R mapping definition. I wanted...
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The author of Nails and Hammers shows how to use the TestSpy pattern (described in Gerard Meszaros' xUnit Test Patterns ) in combination with db4o. TestSpy is a class that can be ‘injected' in a tested class in order to instrument and capture its behaviour....
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Any (Windows user) CLI enthusiast should already be aware about PowerShell , MS latest bet in this area. I must confess that even being aware about it I haven't had the time to use it other than for really simple tests. You know, most of the time we need...
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I just saw Gavin's recent blog post where he announces: "The public draft of the JPA 2.0 specification is already out and includes a much-awaited feature: an API that lets you create queries by calling methods of Java objects" . It seems that the mapping...
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from " Selective Persistence in db4o " "Recently I decided to swap out part of my persistence layer to db4o. This was easy since my persistence design uses the Repository Pattern and the repositories take a service into their constructors. In the example...
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http://www.sdtimes.com/link/33117...
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ODBMS.ORG, a vendor-independent non-profit group of high-profile software experts lead by Prof. Roberto Zicari, today announced the exclusive publication of four in depth technical reports called TechView, featuring four leading object database products:...
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db4objects is now broadcasting news and updates on Twitter! =D Follow us here: http://twitter.com/db4objects...
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"...But for my app,I need to access,update and query the dictionary at very rapid rate.. Serializing and deserializing ,again and again is just Impossible in my app. So, I am choosing a better option, a light ,easy but powerful database.. And the only...
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"I've been using DB4O a lot over the last few months and I really like it. The tutorials are very easy and getting up to speed is no problem at all" http://blog.wekeroad.com/blog/crazy-talk-reducing-orm-friction/...
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Really interesting post by Jason Jarrett where he shows how to support System.Transactions on .NET with db4o. In the example Jason uses a class ( Db4oEnlist.cs ) that manages the enlistment of a transaction which he places as a private nested class inside...
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After many years of growth in community, customer base and revenue, it is time for db4o to go to the next level: We, the team behind the most popular object database db4o , have joined forces with Versant , the commercial leader of ODBMS. News releases...
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Today it's an exciting day for db4o! Versant Corporation (Nasdaq: VSNT ), the leading commercial ODBMS company and provider of specialized data management software, acquired the db4objects' database business of privately-held Servo Software, Inc. (formerly...
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Now is the time for the newer and better Stable version - 7.4 . As usual it is available in download center and recommended for product shipment. Note, that the production release did not change and is also 7.4. The most prominent db4o features introduced...
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I just run into a nice blog post by Nail Martin (" Prototyping : New wine, old skins ") where he shows how to abstract data access with db4o as the underlying persistence engine (Nail is a big fan of repositories and finders, updaters and basically any...
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"So db4o is in my view one of the simplest and most elegant data storage engines i have ever seen" http://neilmartinagile.wordpress.com/2008/11/26/prototyping-new-wine-old-skins/...
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Jos Koenen just reported that an example of db4o underJavaFX is working just fine (you might also want to check the code in his previous post here ). Don't miss this opportunity to check JavaFX persistence with db4o (source code included). Although this...
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The db4o core engine used to get built to one big fat .jar/.dll. From our users on low resource devices we constantly hear requests for a smaller library size. For people using db4o on handhelds and phones like Android, 1 MB seems to be a critical size...
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Hi. Recently we introduced some changes to our configuration APIs striving for simplicity. You can read more about these changes here . Best Adriano...
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In part 3 of his IOC Containers series of blog posts ( part 1, part 2 ), Jared shows us how to use db4o (introducing a DB4OSingleServiceProvider ) to transparently persist objects and use them between application instances or other systems using IOC....
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