If you keen to know more about the IBM Bluemix garage which is also coming to melbourneshortly this URL is the main page for that. Some good videos here detailing what the Garage stands for.https://www.ibm.com/cloud-computing/bluemix/garage/
I’ve just been troubleshooting an ADF application that ran fine on one environment and not on another. After some searching, I discovered that a script had not been run on one of the environments so the database was different.
That reminded me of a simple database check that I often include in my applications: I simply calculate a hash value of all tables and views with an SQL statement like this:
By default if you push a java application into public Bluemix you will use the Liberty java buildpack. If you want to use tomcat you can do that as follows.
1. Show the buildpacks available as follows> cf buildpacks
2. The buildpack which uses Tomcat is as followsjava_buildpack
3. Specify you would like to use the buildpack as shown below when using cf push pas-props -d mybluemix.net -i 1 -m 256M -b (more...)
In one of my projects I ran into a requirement where the end user needs to be presented with default values in the table filters. This sounds like it is a common requirement, which is easy to implement. However it proved to be not so common, as it is not in the documentation nor are there any Blogpost to be found that talk about this feature. In this blogpost I describe how to implement this.
Weblogic server comes with a shared library so you can deploy JAX-RS 2.0 applications; but is limited to Jersey version 2.5.1 and the instructions for changing this are not entirely obvious or straightforward
. I have recently joined a new team at Oracle and one of the first things I did was to look at upgrading the dependent libraries. Now I have talked to the Jersey team and they don't support this combination; (more...)
In many cases – when talking about Java 8 – lambda-functions are the first thing that comes up. I found it a concept hard to grasp, as it slightly changes the way you think about coding. In this blog, I would like to show you some very simple examples, and explain what is what in the lambda world.
In versions prior to Java 8, we had SAM interfaces : Single Abstract (more...)
In my previous post I showed you how to setup a simple weather-station using Raspberry Pi, GroovyPi sensors and Python. It worked very well, but there is definitely room for improvement. In this short post I describe some of these improvements. First you will learn how to start the weather-station when you reboot the Pi. Next I will show you how to create some decent log info.
Most of you recall, that I have some little history in Oracle WebLogic server. Coming all the way back from BEA times. I don't want to comment on recent developments or features or standard support, but one thing is for sure: It is out there and having the chance to run it containerized is something many customers will appreciate. Maybe this is the one thing, that will make a real difference in our industry with (more...)
Did you enjoy the first ride with Fabric8 and OpenShift v3? There's more a lot more to come. After we got the first WildFly container up and running on Kubernetes, without having to deal with all it's inherent complexity, I think it is about time to start to scale and load balance WildFly.Prerequisites
Make sure, you have the complete Vagrant, Fabric8, OpenShift v3, Kubernetes environment running. I walked you through the installation on Windows (more...)
Have you ever dreamed about running WildFly on OpenShift and leverage the latest Kubernetes features: On Windows? Sounds like blasphemy: Everything about those technologies is screaming GO and Linux. Windows doesn't seem to be the right fit. But I know, that there are many developers out there, being stuck on Windows. Corporate laptops, easy management and whatever reasons the different employers come up with. The good news is, there is a small and brave group (more...)
Today Oracle published our article about the ADF EMG XML Data Control. With the article, also comes an extensive two part tutorial, go check them out at OTN:
Powerful and Easy ADF Data Control for XML DataArticleTutorial
Enjoy reading and if you have any comments or remarks, let me know!
Other Resources:ADF EMG CommunityXML Data Control wiki
Need to debug your application? With NetBeans 8.1 (dev) and WebLogic it's very easy to do.
First start your WebLogic server in debug mode. The startup scripts generated for a domain provide an option to start the server in debug mode.
To run in debug mode, set the environment variable "debugFlag" to a value of "true" and start the server.
$ export debugFlag="true"
This launches the server with (more...)
Stoked thatNetBeans 8.1 will have support for deployment to remote WebLogic Server instances.
Sometimes you want to cancel your Integrated WebLogic Server, however, if you do this while a deployment is currently going on, you might run into trouble. The log window will not tell you anymore than a remote deployment failed and that the Application can not be run:
You need to clear some directories in your JDevHome before the application deployment works again. Before clearing the directories, make sure you close JDeveloper.
Go to the folder: (more...)
DevOps is among the hottest topic these days. And the wide range of topics around it makes it hard to actually find a complete description or something that covers everything on a decent granularity. One thing is for sure: One of the most important parts is to deliver the correct metrics and and information for monitoring of the application.Java EE and JMX
The standard way of monitoring Java EE servers is JMX. This is (more...)
The latest Liberty biuldpack update now adds the ability to switch to JRE 1.8 runtime. Given I am now switching to JDK 1.8 for all my projects this has come in very handy, and of course Spring Boot favors JDK 1.8 as well. The default is still JRE 1.7 so to switch to 1.8 set an ENV variable as follows in your manifest.yml as shown below.manifest.ymlapplications: