Recently, a post by Oren Eini (a.k.a. Ayende Raheim) touched off a debate around the respective merits and capabilities of NHibernate and Entity Framework 4.0, two .NET-based Object/Relational Maping frameworks. InfoQ explored this debate in more detail to understand some of the perspectives which were given.
Sadly the terms “ORM” and “performance problems” often travel together. By hiding the underlying SQL from the developers, ORMs can offer a huge productivity boost. Unfortunately they also make it easy to generate ridiculously bad queries without realizing it. And without stored procedures to cross reference, finding the offending code without an ORM-specific profiler can be quite tricky.
James Gregory, the owner of the Fluent NHibernate project, has announced his project has reached the 1.0 milestone and it is currently a Release Candidate.
NHibernate Linq 1.0 has been released. Based on the stable provider from NHibernate Contrib, NHibernate Linq 1.0 is a LINQ provider that supports most operations available through the NHibernate criteria query API.
Eric Nelson, a Developer Evangelist for Microsoft and Technical Editor of MSDN UK Flash, has compiled a list of 23 .NET open source projects mostly based on recommendations sent by UK developers. Other great projects did not make it into the list, while Microsoft’s contribution include: ASP.NET MVC, DLR, IronRuby, IronPython, MEF.
Often times when transferring persistent entities outside of the JVM you must strip off persistence related information or modifications. Gilead, formerly Hibernate4GWT, aims to ease that process and handle the heavy lifting.
Ayende Rahien have posted 13 blog posts describing the different NHibernate mappings in detail with examples. Ayende is one of the contributors to NHibernate, the creator of NHibernate Profiler and have been using NHibernate for many years.
In this article Billy McCafferty presents S#arp Architecture, an ASP.NET MVC architectural framework meant to leverage current best practices in architecting ASP.NET web applications by providing a project code template which uses Domain-Driven Design techniques and has built-in support for NHibernate, Castle Windsor and SQLite.
Fluent NHibernate is an alternative to using XML mappings in NHibernate. Fluent NHibernate is using a fluent interface allowing you to define mappings in code instead of XML. Some people in the community have complained about the lack of documentation for Fluent NHibernate and as a response James Gregory recently announced the official Wiki for Fluent NHibernate.
The latest version of Hibernate Search, an open source domain model search framework from Hibernate group, supports a declarative and dynamic search analyzer model as well as indexing and query time performance improvements. Hibernate Search development team recently announced the release of Version 3.1 of the search framework. The new version also provides new features focused on usability.
Envers is an open-source project from JBoss which has recently been added under the Hibernate umbrella.
The goal of the Polyforms project is to remove the heavily duplicated glue code to tie data access objects to the underlying persistence API.
ModuleFusion 1.0.2, an OSGi service stack designed for enterprise applications, was released. The distribution includes frameworks such as Google Guice, Hibernate, and Jetty, packaged as bundles.
Fabio Maulo, a member of the NHibernate team, has announced the start of a new NHibernate web site called NH Forge. The name is a reminder of the fact that NHibernate was previously hosted on SourceForge.net since 2005. The purpose of the new site is to bring together the NHibernate community, having all necessary in one place.
A port of the popular code coverage tool rcov is now available for JRuby. Ola Bini started a Hibernate-based library for persisting Ruby objects named Ribs. And finally, JRuby trunk contains a new MBean for analysing parse times.