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Last weekend while pondering the question "Is Scala ready for the enterprise?" I decided to write a simple Java EE 6 app entirely in Scala, without using any Java. I had three main reasons for doing this: one was just to see how easy/difficult it would be to write everything in Scala (it was easy).  Another was to document the process for others journeying down the same road (the entire project is on github).  Finally, I wanted to identify advantages of using Scala instead of Java that are specific to Java EE apps (I found several). Background the specific app I created was an adaptation of the Books example from Chapter 10 of Beginning Java™ EE 6 Platform with GlassFish™ 3. It's a simple web app that displays a list of books in a database and lets you add new books. Although it's a pretty trivial app, it does touch on several important Java EE 6 technologies: JPA 2.0, EJB 3.1 and JSF 2.0.

"Logback is intended as a successor to the popular log4j project, picking up where log4j leaves off. Logback's basic architecture is sufficiently generic so as to apply under different circumstances. At present time, logback is divided into three modules, logback-core, logback-classic and logback-access. the logback-core module lays the groundwork for the other two modules. the logback-classic module can be assimilated to a significantly improved version of log4j. Moreover, logback-classic natively implements the SLF4J API so that you can readily switch back and forth between logback and other logging frameworks such as log4j or java.util.logging (JUL). the logback-access module integrates with Servlet containers, such as Tomcat and Jetty, to provide HTTP-access log functionality. Note that you could easily build your own module on top of logback-core. "

OpenNTF is devoted to enabling groups of individuals all over the world to collaborate on IBM Lotus Notes/Domino applications and release them as open source. Browse the catalogs to find the projects, components and controls you're looking for which have been made available under the Apache license or under the GPL license. Browse the project area to find the latest project updates before they have been cleared.

This article shows how to develop a simple plugin which provides a custom transformation step for Kettle 4.0. The transformation step should accept any row stream and append a string field at The end, filling it with a fixed value. The user should be able to define The name of The added field. For starters, that should be enough. Keeping The step functionality at a minimum allows me to explain how The plugin interfaces with Kettle with as little distraction as possible.

"JAX-WS Reference Implementation Project. This project provides the core of Metro project, inside GlassFish community This project develops and evolves the code base for the reference implementation of the Java API for XML Web Services (JAX-WS) specification. the current code base supports JAX-WS 2.0 and JAXWS 2.1 but the project will track future versions of the JAX-WS specifications."

Apache Shiro (pronounced "shee-roh", the Japanese word for 'castle') is a powerful and easy-to-use Java security framework that performs authentication, authorization, cryptography, and session management and can be used to secure any application - from the command line applications, mobile applications to the largest web and enterprise applications. Shiro provides the application security API to perform the following aspects (I like to call these the 4 cornerstones of application security): Authentication - proving user identity, often called user 'login'. Authorization - access control Cryptography - protecting or hiding data from prying eyes Session Management - per-user time-sensitive state Shiro also supports some auxiliary features, such as web application security, unit testing, and multithreading support, but these exist to reinforce the above four primary concerns.

In this article I'll describe the setup I use to do develop Lift applications. While more heavy-weight than if an interpreted language is used, I find this setup provides fairly decent turnaround times. So, it took a little longer than expected to write this article which continues where the previous stopped. But all good things come to he who waits the software used in the previous article all had major updates in the meantime: Scala 2.8 (2.8.1 is just around the corner) Eclipse 3.6 Scale IDE for Eclipse (though a nightly build is currently needed for Eclipse 3.6) Gradle 0.9 RC1 Lift 2.1 RC2

"Gremlin is a graph traversal language. The documentation herein will provide all The information necessary to understand how to use Gremlin for graph query, analysis, and manipulation. Gremlin works over those graph databases/frameworks that implement The Blueprints property graph data model. For example: TinkerGraph, Neo4j, OrientDB, DEX, Rexster, and Sail RDF Stores. 1 Please join The Gremlin users group at http://groups.google.com/group/gremlin-users for all TinkerPop related discussions. Finally, if you are a Gremlin user, please add to The Gremlin in The Wild wiki page with your specific Gremlin uses cases."

Acceleo is a pragmatic implementation of the Object Management Group (OMG) MOF Model to Text Language (MTL) standard. You do not need to be an expert to start using the plug-ins and create your first code generator : using the provided example projects and the powerful completion feature of the Acceleo editor, it is very easy to get started and understand the basic principles.

A few weeks back, I wrote a blog entry lamenting the attitude toward IDEs in the Scala community. A few people told me that the tooling situation was better than I'd implied, so I thought I'd spend a bit of time looking at using Scala (and Lift specifically) in Eclipse. I think the situation is still a ways away from the tooling situation for Java, but it is actually quite good, and I wanted to post a quick tutorial for those interested in developing Lift in Eclipse. Prerequisites This post assumes that you already have Scala 2.8 final and Eclipse 3.6 on your system. For Eclipse, I recommend upping the Xmx setting if you haven't already - I had issues when I had multiple Lift projects imported with Xmx set to 386. Also, this tutorial is going to use Maven, not SBT. SBT may be a better build tool for Scala projects, but I'm not sure how well it works with m2eclipse - I'm going to play with that more later. I also assume you know how to install plugins into Eclipse - I will create a more in-depth screencast for doing all of this if there is enough interest.

The Fornax-Platform is a development platform for tools related to The Model-Driven-Software-Development - MDSD. In this context tools are cartridges, transforms, ready-to-use generators or simple enhancements to make it easier to work in a MDSD environment. AnoTher approach is to provide Howto's and tutorials that simplify The undestanding of MDSD. The Fornax-Platform provides infrastructure and tools to simplify The management and The development of such components and tools. It is independent from companies in this area of software development.

"The Virgo Web Server from EclipseRT is a completely module-based Java application server that is designed to run enterprise Java applications and Spring-powered applications with a high degree of flexibility and reliability. It offers a simple yet comprehensive platform to develop, deploy, and service enterprise Java applications. The Virgo kernel supports The core concepts of Virgo and is not biased towards The web server, thus enabling oTher types of server to be created. The kernel can also be used stand-alone as a rich OSGi application platform. A server runtime can easily be constructed by deploying suitable bundles on top of The kernel. "

COPE, a tool based on EMF that eases the migration of models in response to an evolving metamodel. COPE explicitly records the history of the metamodel as a sequence of changes and allows to attach information of how to migrate models (which is referred to as coupled evolution). the attached information can be used to automatically migrate models to the new version of the metamodel. COPE even goes one step further and allows to reuse combinations of metamodel adaptation and model migration steps across metamodels.

"Learn how to use EMF.Edit and Common Navigator Framework (CNF) to create a model navigation plug-in based on a tree viewer. Build an Eclipse plug-in that allows users to manipulate and navigate the content of an Eclipse Modeling Framework (EMF)-based model. This will involve step-by-step guidance of developing the plug-in, implementing the proper structures to extract the model content through the EMF edit framework, and displaying the content in a CNF-based view part."

Couchbase: The End of The Trade-off Game Before Couchbase, ops teams managing web applications faced tough compromises when it came to databases. Screaming speed or durable, safe data storage. Super scale out virtually overnight or scaling up with lots of hardware upgrades. Bleeding-edge NoSQL or safe, but inflexible relational solutions. Couchbase eliminates those trade-offs. We supply extraordinary speed with complete safety and incorruptibility.  A growth path that will never force you to rethink your application infrastructure from datacenter deployments to mobile devices - one continuous, synchronized flow. Solutions that complement your oTher systems - including your RDBMS.  Technology that meets The needs of developers and conforms to The mission-critical demands of ops teams. This really is The beginning of a new era of NoSQL solutions. Couchbase: database solutions for a post-relational world. Learn more.

" The UnboundID LDAP SDK for Java is a fast, powerful, user-friendly, and completely free Java API for communicating with LDAP directory servers. It offers better performance, better ease of use, and more features than oTher Java-based LDAP APIs, and it's The only one that's being actively developed and enhanced. The UnboundID LDAP SDK for Java is free to use and redistribute in open source or proprietary applications under The GPLv2, LGPLv2.1 and The UnboundID Free Use License. It doesn't have any third-party dependencies and commercial support is available from UnboundID. Get quick answers and all The details you need from our LDAP SDK Documentation »"

"Jsvc is a set of libraries and applications for making Java applications run on UNIX more easily. Jsvc allows the application (e.g. Tomcat) to perform some privileged operations as root (e.g. bind to a port < 1024), and then switch identity to a non-privileged user. It can run on Win32 via the Cygwin emulation layer (see Cygwin for more information), however Win32 users may prefer to use procrun instead, which allows the application to run as a Windows Service. the sources are located in the src/native/unix subdirectory. In the future APR may be used to provide more portable platform support. "

This page contains the latest compiled builds of Pentaho Data Integration (Kettle) community edition.  the builds are based on source code downloaded daily from SVN. Why download these snapshot builds? You want the latest version - to get the latest features in PDI. You want a more stable version - PDI point releases (e.g. 4.0.1) can include important bug fixes - see the PDI JIRA system for a full list of known issues. You need a bug fixed - You're struggling with a critical bug which has been fixed in a more recent version. To save time - You haven't got the time and/or inclination to learn about how to download PDI from SVN and build your own version.

Caching is the most important performance optimization technique. there are many things that can be cached in persistence, objects, data, database connections, database statements, query results, meta-data, relationships, to name a few. Caching in object persistence normally refers to the caching of objects or their data. Caching also influences object identity, that is that if you read an object, then read the same object again you should get the identical object back (same reference). JPA 1.0 does not define a shared object cache, JPA providers can support a shared object cache or not, however most do. Caching in JPA is required with-in a transaction or within an extended persistence context to preserve object identity, but JPA does not require that caching be supported across transactions or persistence contexts. JPA 2.0 defines the concept of a shared cache. the @Cacheable annotation or cacheable XML attribute can be used to enable or disable caching on a class.

The Java Content Repository (JCR) standard, which is based on The Java Specification Requests JSR170 (version 1.0) and JSR 283 (version 2.0), provides a Java-centric object-oriented storage API specifically targeted at content management scenarios. The JCR is not a content management system or a full-fledged content management system API, but raTher a content repository API. A content repository provides a common API for all content-driven applications and CMS components, which require access to The content. It provides methods to read, write, and query content. The primary motivation of The JCR standard is to provide a standard and vendor-neutral programmatic interface for content repositories, allowing applications of multiple vendors to interact efficiently.