http://groovy.web2announcer.com/ Web 2.0 announcer top stories for groovy en Wed, 23 Jul 2008 14:51:27 GMT http://web2announcer.com/go/2713668 unknown@DZone.com Grails: Lessons Learned Wed, 23 Jul 2008 14:51:27 GMT http://web2announcer.com/go/2713668groovyhow-tojavaopen sourceProgramming http://web2announcer.com/go/2713303 unknown@DZone.com [...] Enter Easyb. Easyb is a BDD framework for Java. Basically, you describe your class's intended behaviour in a simple domain-specific language, using terms like "given", "when" and "then". The test cases are readable, and serve both as design documentation and as unit tests. Suppose for example you want to test your new bank account class. You need to ensure that, if you overdraw, the code throws an exception and that the account balance remains unchanged (we haven't implemented bank fees yet ;-) ). Wed, 23 Jul 2008 10:59:22 GMT http://web2announcer.com/go/2713303frameworksgroovyjavaopen sourceProgramming http://web2announcer.com/go/2713306 unknown@DZone.com I'm in the midst of a little refactor of groovyblogs to move to a message based architecture. Should make things a lot more reliable. Along the way I'm coming across a few common things that need to be written down. One of the first to sort out is the "circular dependencies" issue. Wed, 23 Jul 2008 10:39:06 GMT http://web2announcer.com/go/2713306frameworksgroovyProgramming http://web2announcer.com/go/2712958 unknown@DZone.com Getting started with a first simple constraint defined via a plugin. Wed, 23 Jul 2008 06:22:52 GMT http://web2announcer.com/go/2712958frameworksgroovyjavaProgramming http://web2announcer.com/go/2711643 unknown@DZone.com After having read the book Beginning Groovy and Grails: From Novice to Professional, I was wondering if it was ever going to be as simple as a few clicks in any IDE for Grails development. Just yesterday, I read an article by Geertjan Wielenga(who is also my colleague at Javalobby/DZone) about how to get started with Grails in NetBeans IDE 6.5 in 5 simple steps. I had worked with NetBeans quite a lot for EJB3 development but I had never used it for either Groovy or Grails; the choice earlier was always Eclipse IDE. Tue, 22 Jul 2008 16:30:36 GMT http://web2announcer.com/go/2711643frameworksgroovytoolsProgramming http://web2announcer.com/go/2710756 unknown@DZone.com Groovy makes learning Grails an agile process. Tue, 22 Jul 2008 07:54:57 GMT http://web2announcer.com/go/2710756frameworksgroovyjavaweb 2.0Programming http://web2announcer.com/go/2709645 unknown@DZone.com Here's how to get started with Grails in NetBeans IDE 6.5. Mon, 21 Jul 2008 20:03:09 GMT http://web2announcer.com/go/2709645frameworksgroovytoolsProgramming http://web2announcer.com/go/2709066 unknown@DZone.com Check out how easy it is to add multiple new methods to an existing class: Mon, 21 Jul 2008 14:03:27 GMT http://web2announcer.com/go/2709066groovyProgramming http://web2announcer.com/go/2708789 unknown@DZone.com In my previous blog I forgot to mention the most important benefit of Netbeans 6.5 - the ability to seamlessly mix Groovy and Java within the same project (zero developer effort required). Whilst this is a property of Groovy/JVM, Netbeans removes all the hassle of buildscripts, library management, classpaths, ever growing command lines, etc. The support for calling Groovy from Java is excellent - with full code completion (and includes things like automatic getter and setters you don’t need to write in Groovy). Mon, 21 Jul 2008 10:06:05 GMT http://web2announcer.com/go/2708789groovyjavatoolsProgramming http://web2announcer.com/go/2707754 unknown@DZone.com Get up and running with Grails in NetBeans IDE, via wizards and templates, source generators, editors, menu items, etc., which leverage the Grails commands, such as "grails create-app" inside the IDE. Sun, 20 Jul 2008 18:17:30 GMT http://web2announcer.com/go/2707754frameworksgroovyjavaProgramming http://web2announcer.com/go/2706591 unknown@DZone.com Problem: You want to use groovy all the time, but ignorant (but paying) forces keep you writing verbose tedious Java code instead.
 
 Solution: Use groovy instead of shell scripts! Sat, 19 Jul 2008 21:03:22 GMT http://web2announcer.com/go/2706591groovyunix-linuxProgramming http://web2announcer.com/go/2706349 unknown@DZone.com Bringing SWT-style menu API to Swing for maximum productivity. Java SwingBuilder is an attempt to bring dynamic language-type productivity to Java Swing UI development by defining the layout/event wiring/binding in a separate YAML file and leaving the Java class to focus on pure business-side code. Inspired by Groovy SwingBuilder (the concept in general), Ruby on Rails (YAML is the new JSON/XML, but leaner) and GTK+ libGlade (for the idea of keeping layout and event wiring in a separate file). Uses MigLayout as the main layout manager. End goal of the project: to define max functionality with the least amount of code and maximize Swing developer productivity. Sat, 19 Jul 2008 17:45:19 GMT http://web2announcer.com/go/2706349groovyguijavaopen sourceProgramming http://web2announcer.com/go/2706089 unknown@DZone.com Here is a quick example on parsing JSON in grails using groovy (surprisingly, google isn't returning any good hits). Also, if you needed this ability in just straight groovy, I am sure you could include the specific grails jar in your classpath. Sat, 19 Jul 2008 13:45:42 GMT http://web2announcer.com/go/2706089frameworksgroovyProgramming http://web2announcer.com/go/2706031 unknown@DZone.com Both!
 Groovy is a fabulous language. Just read Groovy In Action and some of the other Groovy books. Just about every page brought a Wow response from this Java developer. And the Grails web stack builds on Groovy to provide a quick and powerful website building experience. Sat, 19 Jul 2008 12:56:37 GMT http://web2announcer.com/go/2706031groovyopinionother languagesProgramming http://web2announcer.com/go/2705315 unknown@DZone.com Enjoy the world of scripting languages with Apache Axis2. Deploy scripting , invoke service using scripting and more Sat, 19 Jul 2008 02:18:46 GMT http://web2announcer.com/go/2705315groovyjavascriptrubyweb servicesProgramming http://web2announcer.com/go/2704090 unknown@DZone.com A side by side comparison of a solution to a problem using Groovy (in a functional style) and F# (the functional OCaml derivative for .NET). A fair comparison? Maybe not. Interesting? Hopefully. Fri, 18 Jul 2008 10:41:26 GMT http://web2announcer.com/go/2704090.netgroovyProgramming http://web2announcer.com/go/2702736 unknown@DZone.com Do you want to build your Web sites faster and cheaper, but still leverage industrial-strength technology? You can do just that using Grails and Apache Geronimo. Grails leverages the power of the dynamic language Groovy to accelerate your development. However, it runs on the Java® Virtual Machine and leverages proven Java technologies. This makes it easy to take your Grails application to the next level by deploying it to Apache Geronimo, the premiere open source Java EE V5-certified application server. In this article, you will see how easy Grails can make Web development and how easy Geronimo can make Grails deployment. You will also see how a Grails application can leverage the resources and services provided by Geronimo. Thu, 17 Jul 2008 17:33:32 GMT http://web2announcer.com/go/2702736frameworksgroovyserverProgramming http://web2announcer.com/go/2702388 unknown@DZone.com SQLite is a very interesting database engine. Its performance, simplicity and that fact it runs as a library (not a server) make it the perfect candidate for small project with few users.
 
 Today I experimented with accessing SQLite database from within groovy. Thu, 17 Jul 2008 14:01:00 GMT http://web2announcer.com/go/2702388databasegroovyProgramming http://web2announcer.com/go/2702229 unknown@DZone.com In this Mastering Grails installment, Scott Davis explores the various ways that Grails can use database tables that don't conform to the Grails naming standard. If you have Java classes that already map to your legacy databases, Grails allows you to use them unchanged. You'll see examples that use Hibernate HBM files and Enterprise JavaBeans 3 annotations with legacy Java classes. Thu, 17 Jul 2008 11:59:45 GMT http://web2announcer.com/go/2702229groovyhow-tojavaProgramming http://web2announcer.com/go/2701785 unknown@DZone.com I have made a quick stab at where I think the Groovy Eclipse plugin should be headed. The plugin has been rather dead as of late, which is highly unfortunate. So here is an opportunity to be heard as to which way it should head. Thu, 17 Jul 2008 07:32:35 GMT http://web2announcer.com/go/2701785eclipsegroovyjavaProgramming http://web2announcer.com/go/2700645 unknown@DZone.com Metawidget is an Open Source 'smart UI widget' that populates itself at runtime with UI components to match the properties of a given business object. The latest release includes support for GWT and Groovy. Wed, 16 Jul 2008 18:32:49 GMT http://web2announcer.com/go/2700645groovyjavaProgramming http://web2announcer.com/go/2700598 unknown@DZone.com One of the tenants of the Pragmatic Programmer is to learn at least one new language every year. What language should you learn this year? Wed, 16 Jul 2008 18:04:10 GMT http://web2announcer.com/go/2700598groovyjavaother languagesrubyProgramming http://web2announcer.com/go/2700145 unknown@DZone.com Agile Development is all about developing code and seeking feedback from your users to make sure you’re developing what’s relevant. When changes are suggested, they must be affordable and reliable. Grails, along with its facility to develop test driven, is a killer combination for rapidly developing web applications. Wed, 16 Jul 2008 13:54:23 GMT http://web2announcer.com/go/2700145groovyhow-tojavaweb designProgramming http://web2announcer.com/go/2699691 unknown@DZone.com My latest blog post shares a technique I've used to create a Grails application with a dynamic, runtime switchable datasource. Wed, 16 Jul 2008 08:06:05 GMT http://web2announcer.com/go/2699691databasegroovyhow-toopen sourceProgramming http://web2announcer.com/go/2698703 unknown@DZone.com The notion of executable documentation, where a stakeholder’s language is leveraged as a means for decreasing the impedance mismatch between what they want and what they ultimately receive, has, for some time, been ambition of many a development team (and corresponding stakeholders!). While executable documentation proves to be an effective means in assuring customers get what they actually want, this technique also proves to facilitate a deeper level of collaboration between all parties because everyone is using the same language. Tue, 15 Jul 2008 21:20:59 GMT http://web2announcer.com/go/2698703frameworksgroovyjavaopen sourceProgramming http://web2announcer.com/go/2698599 unknown@DZone.com I like the Groovy concept of builders not only for providing a natural implementation of the builder pattern, but you can also look at builders as a way to create handy DSLs. Check out the SwingBuilder, the GraphicsBuilder or the Hibernate Criteria Builder to see how well targeted these DSLs can be. Tue, 15 Jul 2008 20:52:59 GMT http://web2announcer.com/go/2698599groovyopinionother languagesProgramming http://web2announcer.com/go/2698148 unknown@DZone.com "In my previous post I talked about setting up Grails development environment in GNU/Linux distributions by manually downloading the packages and configuring the environment variables.
 An easier, alternative way to install Groovy and Grails packages is to use the package management system of your favourite GNU/Linux distribution. The trade-off is that you have to accept the version of the packages that are available in your distribution’s repositories(apt-get) or you may have to compromise with the stability of your system(dpkg). Below I am documenting the procedure to install Grails development environment using package manager tools in Ubuntu 8.04(Hardy Heron)." Tue, 15 Jul 2008 16:07:34 GMT http://web2announcer.com/go/2698148groovyhow-tounix-linuxweb 2.0Programming http://web2announcer.com/go/2697189 unknown@DZone.com I'm toying with the idea of turning the Erlang Challenge into a real website. Why not using Grails? I thought the first thing I would need is a user login. Now, I hate logging into websites with a vengeance. Take Facebook for example. Maybe it's an incredible website but because I can't find out without signing up I haven't signed up. Tue, 15 Jul 2008 05:59:40 GMT http://web2announcer.com/go/2697189frameworksgroovySecurityProgramming http://web2announcer.com/go/2695948 unknown@DZone.com Russel Winder has anounced over the Groovy User list that Gant 1.4.0 has been released. Here are his notes on this new version: Mon, 14 Jul 2008 18:13:29 GMT http://web2announcer.com/go/2695948groovyNewstoolsProgramming http://web2announcer.com/go/2694900 unknown@DZone.com Ow. The pain. After a month of a diet of Groovy, coming back to Java is painful. Interestingly, my Java coding style has now changed. Before you read on, it's important to consider whether the ways in which we're hurting are due to Java's very nature, or due to the conventions we impose on ourselves as Java developers. There's a fair share of both. Mon, 14 Jul 2008 07:23:51 GMT http://web2announcer.com/go/2694900groovyjavaopinionProgramming http://web2announcer.com/go/2692920 unknown@DZone.com The freely-available development environment UNA receives support for three new JVM languages: Groovy, Scala, and Fan. Sun, 13 Jul 2008 01:42:18 GMT http://web2announcer.com/go/2692920groovyjavaother languagesProgramming http://web2announcer.com/go/2692448 unknown@DZone.com Just a few notes on setting up Grails with PostgreSQL and PostgreSQL accounts for JDBC connections. Sat, 12 Jul 2008 18:42:28 GMT http://web2announcer.com/go/2692448databaseframeworksgroovyProgramming http://web2announcer.com/go/2691859 unknown@DZone.com Installing Java, Groovy, Grails, and Netbeans in VMWare for Groovy Development. Sat, 12 Jul 2008 11:56:40 GMT http://web2announcer.com/go/2691859frameworksgroovyhow-tojavaProgramming http://web2announcer.com/go/2690541 unknown@DZone.com Currently I'm working on an Adobe Flex front-end which will communicate to Microsoft Team Foundation Server using some SOAP webservices. Fri, 11 Jul 2008 20:50:30 GMT http://web2announcer.com/go/2690541flash-flexframeworksgroovyProgramming http://web2announcer.com/go/2689800 unknown@DZone.com I might be late in the game with this post, but I have to comment on some niceness I have experienced when working with Groovy, Grails and IntelliJ IDEA 7.0. I received a license for IntelliJ IDEA when I attended the Groovy/Grails Experience in February 2008. That ended up being a very cool event; learning from the creators and contributors and getting software to make life easier all in one weekend. Fri, 11 Jul 2008 14:32:11 GMT http://web2announcer.com/go/2689800frameworksgroovytoolsProgramming http://web2announcer.com/go/2689741 unknown@DZone.com Panning the whirling RSS feeds for nuggets of gold, I came across something I had almost given up on finding: a build tool that I could imagine giving up Ant for. Now I’m an Ant fan from way back, having used it In Anger as far back as 1999. I’ve heard the pitches for Maven, and have been sympathetic, but never made the jump. It always seemed like something that was good in theory, but which scared me in practice. The mixed praises and pans that Maven earned from the Massed Mind of the web seemed to cement that opinion, and in spite of some extremely trusted colleagues backing it, I never managed to pull the trigger. At this point, I’m not sure I will, now that I’ve stumbled across Gradle Fri, 11 Jul 2008 13:56:30 GMT http://web2announcer.com/go/2689741groovytoolsProgramming http://web2announcer.com/go/2689676 unknown@DZone.com I know this is kind of old and obvious but any way I had the problem with paths that are not case sensitive on Windows but case sensitive on Linux. I hit this problem while I used grails controller with the name LearningCenterController and had my gsp pages in folder named learningcenter.
 
 Simple code from controller like this one: Fri, 11 Jul 2008 13:19:37 GMT http://web2announcer.com/go/2689676groovyunix-linuxweb 2.0WindowsProgramming http://web2announcer.com/go/2686556 unknown@DZone.com My last post was dedicated to Groovy dynamic stateless mixins. Today I want to talk about stateful ones, which are now presented in Groovy trunk.
 The main difference is obvious - additionally to providing new method stateful mixins can also keep state. Thu, 10 Jul 2008 06:27:40 GMT http://web2announcer.com/go/2686556groovyProgramming http://web2announcer.com/go/2683598 unknown@DZone.com Two ways of making many to many relationships and when you might want to use one over the other. Wed, 09 Jul 2008 01:44:40 GMT http://web2announcer.com/go/2683598groovyProgramming http://web2announcer.com/go/2682604 unknown@DZone.com Performance comparison for a small piece of logic across a number of languages. Some of the interesting findings (I emphasise - in this context) are : Java faster than C++, Java about a 100 times faster than Python / Ruby, JRuby faster than Ruby 1.9, Ruby 1.9 twice as fast as Python, Python / Ruby faster than Groovy, and PHP and Jython bringing up the rear. Tue, 08 Jul 2008 15:53:02 GMT http://web2announcer.com/go/2682604groovyjavapythonrubyProgramming http://web2announcer.com/go/2682482 unknown@DZone.com In my previous post I talked about dynamically adding behavior to Groovy classes using either the ExpandoMetaClass or Categories. These techniques are especially useful if you know which methods you would like to add to your classes prior to actually writing any code. But what if you don't know which methods you will need before code writing time? What if you want to allow yourself the flexibility to call methods arbitrarily without defining their implementation beforehand? Tue, 08 Jul 2008 15:01:26 GMT http://web2announcer.com/go/2682482groovyProgramming http://web2announcer.com/go/2682430 unknown@DZone.com I'm pleased to announce that GraphicsBuilder 0.6 has been released. It has many updates and finally makes public both SVGRenderer and SWFRenderer. Here are a couple of posts that describe what's included in this release Tue, 08 Jul 2008 14:18:22 GMT http://web2announcer.com/go/2682430announcementgroovyguijavaProgramming http://web2announcer.com/go/2682431 unknown@DZone.com Domain Specific Languages (DSL) have been gaining popularity steadily for quite some time. We'll jump right to some little experiments, but those who'd prefer to get sound theoretical background, please check out the Martin Fowler's article or wikipedia. Tue, 08 Jul 2008 13:40:22 GMT http://web2announcer.com/go/2682431groovyjavatrendsProgramming http://web2announcer.com/go/2681816 unknown@DZone.com After my first real encounter with Groovy I got really excited about it and decided to spend some of my personal training days to get more experience with Groovy. As study material I read the Programming Groovy book. While reading I really wanted to get my hands dirty, so as a study case I decided to solve one of my longest and biggest frustrations as a developer and that is working behind a proxy server. The idea I had is to create a groovy program that will allow to turn the proxy settings on or off for applications like (Maven, Subversion, Internet Explorer, Firefox and so on) by running a single command: groovy com/xebia/proxy/SwitchProxy on/off. Here is a short summary of some of the techniques I used while creating this program. Tue, 08 Jul 2008 08:38:10 GMT http://web2announcer.com/go/2681816groovyProgramming http://web2announcer.com/go/2681606 unknown@DZone.com NetBeans IDE 6.5 Milestone 1 is now available for download. Charles walks through the main features. Tue, 08 Jul 2008 06:01:34 GMT http://web2announcer.com/go/2681606groovyjavaphprubyProgramming http://web2announcer.com/go/2680273 unknown@DZone.com This plugin aims to provide a simple (grails) way of developing JSR-168/JSR268 portlets using well known Grails conventions that can be deployed to any compliant Portal. Mon, 07 Jul 2008 15:14:58 GMT http://web2announcer.com/go/2680273frameworksgroovyProgramming http://web2announcer.com/go/2680048 unknown@DZone.com I have been playing with groovy recently, specifically with the MarkupBuilder, the groovy native support for markup languages. It basically means writing XML using native groovy syntax. Pretty neat. Mon, 07 Jul 2008 13:10:54 GMT http://web2announcer.com/go/2680048groovyxmlProgramming http://web2announcer.com/go/2679800 unknown@DZone.com Production-quality 0.1.FINAL release for the Java SwingBuilder project. Java SwingBuilder is an attempt to bring dynamic language-type productivity to Java Swing UI development by defining the layout/event wiring/binding in a separate YAML file and leaving the Java class to focus on pure business-side code. Inspired by Groovy SwingBuilder (the concept in general), Ruby on Rails (YAML is the new JSON/XML, but leaner) and GTK+ libGlade (for the idea of keeping layout and event wiring in a separate file). Uses MigLayout as the main layout manager. End goal of the project: to define max functionality with the least amount of code. Mon, 07 Jul 2008 10:06:45 GMT http://web2announcer.com/go/2679800groovyguijavaopen sourceProgramming http://web2announcer.com/go/2678048 unknown@DZone.com To make my point clear immediately at the beginning. I am not claiming that creation of fat rich client is easier in some web framework than with Java or .NET. I am talking about simple CRUD application with three domain objects, and two features that cannot be directly connected with CRUD.
 
 So problem is following. There are three domain objects that should be stored into local database. Domain objects are Calculation, Shop and Item. Relationship between domain is displayed on the following picture: Sat, 05 Jul 2008 07:53:26 GMT http://web2announcer.com/go/2678048groovyopinionweb 2.0Programming http://web2announcer.com/go/2676844 unknown@DZone.com Being a long weekend, I had a couple hours yesterday to mess around with my Maven build in the hopes of integrating Groovy and ridding myself of a lot of Hibernate boilerplate (you know, all the annoying getters/setters). Fri, 04 Jul 2008 12:41:38 GMT http://web2announcer.com/go/2676844frameworksgroovytoolsProgramming