November 4th, 2009 | by akoelewijn | published in java, oracle, oss, soa
I did a small proof of concept yesterday: a wicket web application using embedded Mule to connect to some services. Problem is that it had to run on OC4J 10.1.3.4.0 with Java 5. Got it running pretty fast, some tips: Oracle’s xml parser didn’t like some of Mule’s xsd files. You can solve this by [...]
August 21st, 2009 | by akoelewijn | published in java, soa
I created a normal mule project using the maven archetype, eg: Strangely, i got some missing dependencies on this project. The maven output shows me the following: I solved this by excluding the unknown dependencies and replace them with libraries with a slighly different naming. Exclude the missing dependencies: Include replacement dependencies: Anybody know an [...]
August 11th, 2009 | by akoelewijn | published in cloud, java
VMWare just bought SpringSource. Looks to me like they are going to compete with Google Apps Engine: offer a java based cloud platform as a service. This is probably good news for everybody who is using the free and open source versions of spring and grails. My thinking is that VMWare will use the free [...]
June 26th, 2009 | by akoelewijn | published in java, soa, web
Here’s a quick example how you can build a RESTfull Grails application and deploy it to Google App Engine. For this example you need Grails 1.1.1 and GAE SDK for Java version 1.2.1. I’m going to create a small service which will return a wind forecast. The forecast data is hardcoded as this is just [...]
April 20th, 2009 | by akoelewijn | published in java, oracle
Oracle is probably the biggest user of the java applet technology. Oracle Forms runs as an Applet in the browser. Now, Oracle Forms isn’t the hippest tool ever, people have been expecting it to die for a couple of years. But it’s still around. Mainly because Oracle still uses Forms in their Oracle E-Business Suite. [...]
April 20th, 2009 | by akoelewijn | published in java, oracle, oss
So Oracle just bought Sun. At first look it might seem like closed source versus open source. Most of Oracle’s well known products are closed source, whereas most of Sun’s products are open source. But that’s not the full story. Oracle is also involved in Open Source. It just takes a different approach. There are [...]
April 8th, 2009 | by akoelewijn | published in java
Google just announced that their AppEngine will support Java. The good new: AppEngine is going to use a fairly regular JVM, with some functionality disabled like sockets and file writing. It should support other languages that compile to bytecode, like Scala or JRuby. No mention of Groovy, but i hope that’ll work soon too. Update: [...]
March 11th, 2009 | by akoelewijn | published in java, oss, soa
I’m still playing around with groovy scripting. It’s an excellent way to quickly prototype some ESB scenarios. Last week i blogged about using groovy to write files to a gtalk account using Apache Camel, the example below shows you how to start an ActiveMQ broker, which persists messages to a PostgreSQL database. An Apache Camel [...]
March 11th, 2009 | by akoelewijn | published in java, oss, soa
The latest release of Java Magazine contains an article i wrote titled: Client Server 2.0 with jQuery and Grails. Unfortunately, not all code examples fitted into the magazine. You can download the complete article, including screenshots and sourcecode here: Client Server 2.0 met jQuery en Grails (dutch).
February 18th, 2009 | by akoelewijn | published in java, open standards, oss
I wrote a small Python program today, to see if a could create a workaround for a problem i have in Java. I’ve written a couple of Java applications that use OpenOffice’s API to create ODF and MS-Word documents. The OpenOffice API that i used in Java is pretty horrible: very verbose, not intuitive. You [...]
