Developer Interview (#DI 5) Jeff Genender (@jgenender) about Apache, Karaf, Data and Integration

In my evening hours I had the chance to talk to Jeff Genender (@jgenender) which resulted in a new episode of my developer interviews. We talked about all things Apache and integration and also a bit about Java EE and microservices and what today's customers want from a modern architecture.

Jeff Genender is a Java Champion, Apache Member, and Java Open Source consultant specializing in SOA and enterprise service implementation. Jeff has over 23 (more...)

ADF Region Data Synchronisation with Change Event Policy

This post applies for multiple ADF regions, based on the same Data Control. I will show you can avoid using ADF Contextual Events to synchronise two ADF regions, when both are based on the same Data Control and this Data Control is shared between the two.

Sample application contains two ADF Task Flows, both are using the same VO instance from shared Data Control:


Two ADF regions are implemented based on these TF's, one implements (more...)

Oracle Forms 12c?

Some people wonder whether there will be a 12c version of Oracle Forms or not.

Instead of making guesses, the best way is to ask the people who know best.
So, after getting this question, I asked Michael Ferrante, Oracle Forms Product manager.

Here’s his answer:

Version 12 of Forms and Reports is tentatively planned for releases sometime in CY2015.  At this time, we (Oracle) are not permitted to share exact dates, but (more...)

JDeveloper 12c ADF View Token Performance Improvement

There is known limitation in ADF 11g, related to accessing application in the same session from multiple browser tabs. While working with multiple browser tabs, eventually user is going to consume all view tokens, he will get timeout error once he returns back to the previous browser tab. Unused browser tab is producing timeout, because ADF 11g is sharing the same cache of view tokens for all browser tabs in the same session. This means (more...)

Red Hat to Acquire FeedHenry – It takes a Village to raise an app

Red Hat, Inc.today announced that it has signed a definitive agreement to acquire FeedHenry, a leading enterprise mobile application platform provider. This will expand Red Hat’s portfolio of application development, integration, and Platform-as-a-Service (PaaS) solutions and support our customers with mobile application development in public and private environments.
A warm welcome to the FeedHenry Team at Red Hat!

What is FeedHenry?
It is a cloud-based mobile application platform to design, develop, deploy and (more...)

WildFly 9 – Don’t cha wish your console was hawt like this!

Everybody heard the news probably. The first WildFly 9.0.0.Alpha1 release came out Monday. You can download it from the wildfly.org website The biggest changes are that it is built by a new feature provisioning tool which is layered on the now separate core distribution and also contains a new Servlet Distribution (only a 25 MB ZIP) which is based on it. It is called "web lite" until there'll be a better name.
(more...)

Handling Format for BigDecimal Numbers in ADF BC

This may not be as straightforward as it sounds - to define a format for a number attribute in ADF BC. Especially if you are going to have large number (more than 15 digits). Most likely you are going to experience precision/scale and rounding issues, for BigDecimal and Number type attributes with format mask applied. Sounds frustrating? Yes it is. I hope my blog post will help you to implement proper number formatting.

Firstly I'm (more...)

New in Java 8 : Consumers and Predicates : a simple introduction

The java.util.function package is new in Java 8 and contains interfaces that are used for lambda expressions and functional references. In this blog, I give a brief introductionn of  2 interfaces of this package :

  • Consumer
  • Predicate

For the examples in this blog, we have a list of invoice’s with name, amount and category :

public class Invoice {
   private String name,amount,category;
   public Invoice(String name,String amount,String category) {
     super;
     this.name=name;
     this.amount=amount;
     this. (more...)

JBoss Fuse Component Details and Versions

JBoss Fuse combines several technologies like core Enterprise Service Bus capabilities (based on Apache Camel, Apache CXF, Apache ActiveMQ), Apache Karaf and Fabric8 in a single integrated distribution. The best part is, that no matter what your skill level is, contributing to JBoss Fuse can be very rewarding and a great learning experience. You’ll meet lots of smart, passionate developers who are all driven to create the best middleware possible in open source! A good (more...)

Retro Day – Workload Management in WebLogic Server

Quite recently, I stumbled across this older but still very relevant whitepaper on the workload management capabilities of  WebLogic Server.  Written by one of the key engineers at the time, who later went on to become an architectect, it explains the workings of the new work load management feature introduced into WebLogic Server at the time and covers the concepts of work-manager configuration and effect, work scheduling and prioritization, overload protection and  more.

This (more...)

API Management in WildFly 8.1 with Overlord

I gave a brief introduction about the Overlord project family yesterday. Today it's time to test-drive a bit. The API Management sub-project released a 1.0.0.Alpha1 two days ago and introduces the first set of features according to the 18-Month roadmap.

What is APIMan exactly?
It is an API management system which can either be embedded with existing frameworks or applications or even run as a separate system. So far, so good. But (more...)

Creating a Pivotal GemFireXD Data Source Connection from IntelliJ IDEA 13.x

In order to create a Pivotal GemFireXD Data Source Connection from IntelliJ 13.x , follow the steps below. You will need to define a GemFireXD driver , prior to creating the Data Source itself.

1. Bring up the Databases panel.

2. Define a GemFireXD Driver as follows


3. Once defined select it by using the following options. Your using the Driver you created at #2 above

+ -> Data Source -> com.pivotal.gemfirexd.jdbc. (more...)

ADF BC View Object Change Notification Listener

ADF BC allows to define triggers to listen for row changes on VO level. We can listen for row updates, inserts and deletes. This can be useful, if you would like to invoke specific audit method or call custom methods to populate dependent transient VO's with updated data.

To enable such triggers, you must add a listener for VO, this can be done during VO creation from standard create method:


ADF BC API methods, such (more...)

The Oracle ACE programme

I’m proud to be one of the Oracle ACE Directors. Watch the video for some viewpoints on the Oracle ACE program from both Oracle and other Oracle ACEs.

Overlord – The One Place To Rule And Manage your APIs

We're living in a more and more distributed world today. Instead of having individual, departmental projects running on some hardware below a random desk, today's computer systems run at large scale, centralized or even distributed. The needs for monitoring and managing never changed but got far more complex over time. If you'd put all those cross functional features into a bucket it would most likely be called "Governance". This can happen on many levels. People, (more...)

Apache Mesos and Marathon for UnifiedPush Server and WildFly

After reading a bit about Apache Mesos I wanted to play a bit with it. If you don’t know what Mesos is, it’s a cluster manager that provides efficient resource isolation and sharing across distributed applications, or frameworks.

During reading up on Apache Mesos I ran into the Marathon framework, developed by the folks atMesosphere. Marathon is a nice tool to manage tasks on Apache Mesos. The Github repo says:

Marathon is an Apache (more...)

Developer Interviews (#DI 4) Stan Lewis (@gashcrumb) about #hawtio

Already the fourth edition of my pod- and screencast crossover. Today it was Red Hatter Stan Lewis (@gashcrumb) who took some time to talk about his work and about the hot web-console which is the new front-end for all things JBoss Fabric8/Fuse. He is a Principal Software Engineer at Red Hat and came on board with the Fusesource acquisition end of 2012. As one of the primary developers on the hawtio (more...)

Calculating HTML ID for ADF UI Table Row

Each row in ADF UI table is assigned with ID, this is how rows are referenced in HTML. I had a blog post describing how to set a focus for newly inserted row - Improving ADF UI Table CRUD Functionality with Auto Focus. I'm getting ID for selected row using getClientRowKey method and this method returns row identifier, the one which is used in HTML. Blog reader was trying to use the same method to (more...)

Automatically Applying Get Posted Attribute Method for Row Refresh

There is out of the box ADF BC method available to refresh current row, see this post for details - Refreshing Single Row Without Full Rollback. There could be use cases, when refresh method is not sufficient (particularly for a row with dependent LOV's) - it may not reset data correctly. Also there is extra SQL query sent to DB, to fetch row data by key. Even it works well most of the time, still (more...)

Variable in list with Postgres JDBC and Greenplum

I previously blogged on how to create a variable JDBC IN list with Oracle. Here is how you would do it with Pivotal Greenplum. Much easier , without having to write a function. In the Greenplum demo below we use the any function combined with string_to_array

http://theblasfrompas.blogspot.com.au/2008/02/variable-in-list-with-oracle-jdbc-and.html

Code as follows
  
import java.sql.*;
import java.sql.DriverManager;

/**
* Created by papicella on 4/09/2014.
*/
public class VariableInListGreenplum
{

public (more...)