InfoQ Homepage Development Content on InfoQ
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Versioning JPA Entities
Maintaining a historical view of database records has been a problem that has been solved before but not easily. Being able to restore entities to their previous versions including basic properties as well as their relationships is more than a trivial task. Recently Envers 1.0.0 GA was released, aiming to simplify JPA entity revisioning.
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Learn NHibernate with The Summer of NHibernate
NHibernate has grown in popularity lately with more wide-spread use because of ALT.NET and competing technologies such as the Microsoft Entity Framework. A new screen cast series called The Summer of NHibernate has been created to expose more developers to this technology.
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New Open Source project provides Object Oriented data access
Kasper Sørensen has created a new open source project at eobjects.dk called MetaModel. The project is a common domain model, query engine, and optimizer for different types of datastores, such as relational databases and flat files. MetaModel is a Java library that provides a fluent, object-oriented interface for SQL compliant queries.
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JSR 277 Debate Renews Around Versioning
Debate has once again arisen in the community around JSR 277, which is a proposed dynamic module system for Java 7. The flashpoint of the debate this time around is the version numbering system that is planned for JSR 277 Java Modules (JAMs). InfoQ examined the discussions and arguments to understand more about the current state of JSR 277 and it's acceptance by the community.
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The Windows Mojave Experiment
Microsoft has recently conducted an experiment, called Mojave, in an attempt to quantify the users' true perception of Windows Vista. The results are shedding some light on people's biases and misconceptions related to Vista.
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From Concept to Reality: JavaFX SDK Preview Released
Fifteen months after it was first announced, Sun has released the first public preview of JavaFX for Windows and Mac OS X.
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Lambda Expression Improvements for VB
For VB developers it is a toss-up for the most frustrating thing about anonymous functions. Paul Vick is currently discussing two of them, anonymous subroutines and multi-line anonymous functions.
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Interview: Guy Steele on Programming Languages
Floyd Marinescu, co-founder of InfoQ, interviewed Guy Steele, a Sun Fellow working for the Programming Language Research Group at Sun, about programming languages, the lessons to be learned from the past and what to expect from the future.
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Alternative Flash RIA Development Tool FDT 3.1 Beta Released
FDT is alternative RIA development tool in Flash, ActionScript or Adobe AIR. The latest release improves Flex SDK based application development.
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Article: An Overview of the eXo Platform
This article by Benjamin Mestrallet and Tugdual Grall provides an overview of the eXo platform, the Portlet 1.0 (JSR 168) and Portlet 2.0 (JSR 286) specifications. Topics covered include new features in the eXo Web 2.0 Portal, new capabilities in the Portlet 2.0 API, Inter-portlet communication, the eXo Java Content Repository, eXo Enterprise Content Management and the eXo business model.
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YARD - Code Metadata And Documentation Generation for Ruby
YARD is an extensible tool to provide metadata about Ruby code using Javadoc-style meta tags. The metadata includes optional type annotations using either type names or structural type information. We look at YARD and how Merb and the Ruby In Steel IDE use similar approaches for optional type annotations.
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Presentation: The Top 10 Ways to Botch Enterprise Java Application Scalability and Reliability
In this presentation, Cameron Purdy discusses Java scaling. Topics include performance improvement versus scaling improvement, serial bottlenecks, queue theory, rewriting existing frameworks, avoiding the database, single points of failure, avoiding abstractions, disaster recovery, one-size-fits-all architecture, large JVM heaps, network failures, and trusting product claims.
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Using Windows PowerShell from VBScript, JScript
Sapien Technologies has made available ActiveX PowerShell (ActiveXPosh), a free scripting tool which allows calling the Windows PowerShell from any COM compatible scripting language like VBScript or JScript. ActiveXPosh is useful to enhance existing scripts to make use of the PowerShell functionality.
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Windows Home Server Power Pack 1
Windows Home Server Power Pack 1 has been released to manufacturing and is now available on the Microsoft Download Center. This power pack provides new features, better performance, and fixes the acknowledged data corruption bug.
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Industry Luminaries Weigh into Scalability Debate
As part of its virtual panel series, InfoQ has brought together scalability and performance architects from some of the biggest and most visible projects around, to let us into their secrets for achieving results the rest of us would just dream of.