Author: Lucas Jellema
The use case is very straightforward: we have a SOA & BPM Composite Application for the Order process. Whenever a customer places an order, a new instance of this …
Agility is about ability to adapt. Enterprises need to quickly respond to changing circumstances and requirements. Agility is a state of mind (“embrace changeâ€) that must be supported by …
Below you will find the slides for my Oracle Open World 2011 presentation Push to the limit – rich and pro-active user interfaces with ADF on  ADF’s active data service …
‘I will sing for you tonight on Treasure Island’
During the Oracle Open World conference going on this week I was asked by one of the attendees to one of my sessions for a little guidance on the …
I just completed my Birds of a Feather session at JavaOne 2011 about Push in an enterprise application architecture. Over 150 attendees were in the audience, many of them …
That was a fun presentation to do. I just completed my Reaching out from PL/SQL presentation – in a large room with quite a lot of people. I liked …
JavaOne 2011 proofs that the apparent decline of Java – as a language, a platform and a community – as been turned around into a steady growth again. Attendance …
Sunday 2nd of October 2011 saw, in the prelude to the Oracle Open World conference, the ADF Enterprise Methodology Group’s Super Sunday. Six valuable presentations on planning, designing, building …
Do you see what I see – or am I imagining things?
As the conference draws awfully close, I am trying to compose my final agenda. Some anchorpoints are my own sessions – those I have to attend. Then there is …
datum: dinsdag 27 september; 16.30 uur locatie: AMIS, Edisonbaan 15, Nieuwegein sprekers: Toon Koppelaars en Lucas Jellema Het belang van data integriteit behoeft geen toelichting – als het goed …
Oracle just announced the Database Appliance – something perhaps best described as a Exadata’s dumb little brother – a pre-integrated, optimized piece of hardware for running Oracle Database. The …
Lately, we have been introducing Selenium based testing for many our ADF Faces based web applications. Or rather, our testers created the tests for the web pages using Selenium. …
Below you will find the presentations from the AMIS Oracle Open World 2011 Preview Event that took place on September 19th at AMIS in Nieuwegein, The Netherlands. Note: because …
Oracle Open World 2011 is around the corner. With close to 2000 presentations on this topic and that. And then some. ADF was prominent participant in a large number …
In a previous article, I have introduced RuleGen 3.0 – a 2nd generation business rule implementation framework for the Oracle Database: https://technology.amis.nl/blog/?p=12807. RuleGen provides a solid, structured, scalable framework …
The recently announced acquisition of FatWire by Oracle is leading to interesting new options for customers looking for dynamic, interactive, multi-channel & device end user facing web sites – …
This morning, I noticed the following email sitting in my Inbox: “Hello, Lucas. I found Hierarchy Viewer demo from https://technology.amis.nl/blog/5786/adf-11gr1-new-hierarchical-viewer-for-visually-pleasing-representation-of-data-structures. But i need to implement some kind of solution. …
Hot off the press (well, that is what you always will have with printing on demand I suppose) I received an electronic copy (not off the press after all) …
In a recent article I discussed screenscraping in a in hindsight fairly clumsy way (https://technology.amis.nl/blog/12786/building-java-object-graph-with-tour-de-france-results-using-screen-scraping-java-util-parser-and-assorted-facilities). While preparing for a series of articles on data visualizations, I had need of …
I am quite sure I have addressed this before. But I could not find it readily and I needed it today. So here it goes: I am loading data …
While preparing for the new SOA for Java Professionals training program at AMIS, I was recently working on a section discussing XQuery and more specifically the ability to use …
The final episode in a series on ADF DVT applied to the Tour de France 2011 results. In this series, I have used many of the ADF DVT Graph …
Another article on analyzing and visualizing the results from the Tour de France 2011 using the ADF DVT components. This article uses the same set of data already discussed …
This article uses the statistics about this year’s Tour de France to visualize the gap between each of the top 5 riders and Cadel Evans – throughout the 21 …
An apparently trivial challenge that still took me bit longer than expected. What is the situation: I have a table with two columns (of interest). One is a column …
In two previous articles, I have explained how it is possible to get hold of the results of the Tour de France 2011 (and previous years) using simple Java …
No matter how complex the enterprise and application architectures become, no matter the number of tiers, services, devices and user interfaces – at the heart of most enterprises will …
In a recent article – https://technology.amis.nl/blog/12786/building-java-object-graph-with-tour-de-france-results-using-screen-scraping-java-util-parser-and-assorted-facilities – I described how I retrieved the statistics for recent Tour de France editions from the official Tour de France website from my …
Last night, the AMIS Mobile Special Interest Group convened. This session had as objective to explore the many different mobile agents and devices that we encounter, the types of …
Last Saturday, the Tour de France 2011 departed. For people like myself, enjoying sports and working on Data Visualizations on the one hand and far fetched uses of SQL …
The UNPIVOT operator was introduced in Oracle Database 11g – see for example: https://technology.amis.nl/blog/2421/the-oracle-11g-unpivot-operator-turning-columns-into-rows. In Oracle, the UNPIVOT operation is the process of turning Columns to Rows. Put simply, …
This article shows how to create a widget in an ADF Faces application that looks like this: This table shows a comparison between records – Departments in this case …
I may have bored you before with stories about Data Visualization. It is one of my favorite topics. We deal in data. And visualization of data can help to …
I am presenting later today on the Oracle Fusion Middleware Forum (Spoorwegmuseum, Utrecht). The topic of today’s presentation is cloud computing – especially Platform as a Service – and …
As a followup to my recent article on how to Produce and XML document based on data in a POJO structure using JAXB (https://technology.amis.nl/blog/12499/creating-an-xml-document-based-on-my-pojo-domain-model-how-will-jaxb-help-me) I will describe in this …
The challenge is a common one. We have got data in a domain model, based on POJOs. And we need to marshall that data into an XML document. Note …
The other day on one of the projects I am involved with, we ran into an unexpected exception, from an innocent looking EL expression: javax.el.PropertyNotFoundException: … value=”Book #{book.title}”: Missing …
I have always had a fascination for the Data Visualization capabilities of all the tools and technologies I have worked with. For example: I worked with Oracle Graphics 2.0, …