OO7J is a Java version of the original OO7 benchmark (written in C++). This project includes benchmarking Object Relational Mapping (ORM) tools. Currently there are implementations for Hibernate on PostgreSQL, MySQL, db4o and Versant databases. InfoQ and Roberto V. Zicari from ODBMS.ORG recently interviewed Pieter van Zyl, creator of the OO7J benchmark.
This article explores tuning techniques for Hibernate-based applications, focusing on tuning topics that are effective but poorly documented, such as inheritance mapping, second level cache and enhanced sequence identifier generators. It also provides some background database information which is essential for tuning Hibernate.
Based on a concrete example with Scala, Spring and JPA the article explains how to enhance Spring with Scala’s powerful concepts such as implicit conversions and traits. Moreover, it shows how the gap between a Java based framework and Scala can smoothly be bridged.
Using the new DLR features in .NET 4 you can build a configuration-free ORM that uses the normal object-dot-property syntax without interfaces to define, classes to implement, or XML data mapping. 8
Billy McCafferty presents S#arp Architecture, an ASP.NET MVC framework meant to leverage current best practices in architecting ASP.NET web applications. 6
Alois Reitbauer specifies several architectural anti-patterns that one should stay away from and which can downgrade an application’s performance. 28
Smalltalk, a language that has had a big influence on Ruby, is making a comeback. We take a look at the current situation and talk to Randal L. Schwartz about Smalltalk. 5
Mat Wall and Nik Silver explain how their has been using Domain-Driven Design in an evolving and Agile environment, at high traffic news site guardian.co.uk. 15
Leading persistence solution architects their views on the current state of the union in persistence in the Java community. 2
Using a domain model is not just creating the actual domain model classes and using them, due to infrastructure needs. Mats Helander explains how to use handle this complexity in a simple way. 38
Srini & Kavitha Penchikala give an overview of the support provided by Spring framework in the areas of unit and integration testing, with a sample application. 16
Hibernate is a widely used ORM tool for Java. A new InfoQ article looks at using Hibernate to provide a commonly requested feature of custom fields for domain objects. 19