Author: Lucas Jellema
ADF Faces RC has built in support for AJAX and Partial Page Refresh. Through the autoSubmit and partialSubmit attributes, we can indicate that a value change or an action …
On Wednesday 25th March, I will present an ADF Masterclass seminar for Oracle University in the vicinity of Oslo (Norway). This masterclass will discuss many valuable lessons we have …
Using Flashback Query is really simple. Leveraging Flashback Query in applications has become a more viable option with the advent of the Table Archive in Oracle 11g R1 …
In this article, we will continue a discussion on asynchronous processing started in a previous article that introduced asynchronous and parallel processing Java using Executors, Futures, Callable Objects …
(including all source code left out of the article in IOUG Collaborate 2009 Select Journal) Web applications, like any type of application, contain a great deal of boilerplate …
Processors are not going to get much faster. No higher clockspeeds are foreseen. The speed of processing will be further increasing through parallellization, engaging multiple CPU cores for …
A quick overview of you can create an SCA Composite Application that publishes a WebService interface, accepts SOAP Messages and write their contents to a file, appending a …
An Application Context in the Oracle Database is a name in-memory collection of key-value pairs. Applications can store values in an Application Context – using a package associated with …
ADF Faces 11g does not contain tags such as af:head and af:body. Instead there is af:document, an abstraction from the documents served to potentially different clients. A JSF …
One of the rather cool pieces of functionality that did not make it into the JDeveloper 11g Boxer release of early October 2008 is the Meta Data Service …
When you run a ADF Faces 11g Rich Client components application, you (or rather your users) are hit with a substantial JavaScript download overhead. It is not surprising, …
One thing that always draws me in tools, libraries and frameworks: what are the hooks, the backdoors, the extension points, the APIs, the event listener registration facilities etc. Today …
2009 will be the year of JEE 6. Important specifications in the JEE 6 platform are Servlet and JavaServer Faces. JEE 6 will contain the Servlet 3.0 specification …
This morning I received an email from a reader of one of my articles on the blog. The challenge in the email: I want to programmatically create an …
Here you will find the first demo from my Devoxx 2008 presentation. It shows how you can rapidly create a rich web application based on Java Server Faces …
Here is my Devoxx 2008 presentation challenge: within 30 minutes, walk an audience through ‘JSF On Rails’ with ADF 11g (the application development framework from Oracle) and JHeadstart – …
I am currently attending the Devoxx Conference in Antwerp, the largest gathering of Java developers this side of the pond. I was last here in 2005 – a …
As I was preparing for my Devoxx presentation next Monday, I decided to look at the somewhat harder way of integrating a JPA based business tier into a JavaServer …
ADF 11g Rich Client Components have a facility called the Change(d) Indicator. The changed attribute is specified using a Boolean value or expression (typically the latter). When the …
The ADF 11g Tree Table component can be used for the compact presentation of fairly complex data sets. It allows the user to quickly drill down to a specific …
Inspired by a blog article by Edwin Biemond, I decided to try it out myself: previewing an PDF document in an image. However, Edwin used jPedal (http://www.jpedal.org/), a commercial …
When we wrap a rich table in a panelcollection component, we get some interesting additional functionality. This includes the ability for the end user to hide and display …
Today a discussion arose with one of the UI Designers on the ADF 11g project I work on. He is used to a certain way of styling web applications. …
My challenge of the day: a query that returns aggregate values. And that can be manipulated dynamically to sometimes aggregate grouped by one dimension, sometimes along multiple or …
Aanstaande maandag – 17 november – organiseert AMIS een KC (Kennis Centrum) sessie rondom de recent uitgekomen 11g versie van ADF. Deze release is een belangrijke – voor …
We were faced by an interesting challenge: our JSF application should display boilerplate text – titles, button labels, prompt, error messages, tool tips etc, – in a context …
In a recent article, I discussed how to create a fairly structured hierarchical report – table style – using ADF 10g not-so-rich Faces – see creating-a-read-only-hierarchical-table-report-with-adf-10g. The temptation …
Presenting information to end users can be somewhat challenging, especially if you want to provide a lot of information on a single page in a structured way. You …
The Oracle Technology Network just published my two part series on implementing Cell Highlighting in ADF 11g Rich Faces Table components. The articles describe how you can have the …
One of the sweet spots in ADF 11g RichFaces is of course the library of Data Visualization components. I have written about PivotTable and GanttChart in the past …
Selecting a row in a table with search results to drill down to its details is a fairly common operation in web application. I have implemented such functionality …
The context: ADF 11g RichFaces. Reassigning details to another master can be done in several ways. One is through the Shuttle component, another using drag and drop in trees …
ADF 11g allows us to specify display hints, validation rules and a lot of other declarative settings for Attributes in Pojo based DataControls. These specifications influence the way …
Just over two years ago I wrote an article on this blog – integrating-adf-faces-and-myfaces-tomahawk-creating-a-popup-with-adf-faces-shuttle-component (supported by Changing the order of columns in a JSF Table Component -in the …
One of the valuable new components available in ADF 11g RichFaces is the Popup component. While one must be careful not to overuse all the new tools in …
Het is wat laat, maartoch wil ik jullie met nadruk wijzen op en uitnodigen voor de Kennis Centrum sessie die morgen (dinsdag 28 oktober) plaatsvindt bij AMIS. Deze sessie …
A heat-map according to the definition found in Wikipedia is "a graphical representation of data where the values taken by a variable in a two-dimensional map are represented …
In a previous article I discussed the parallel execution of activities in BPEL, more specifically in Oracle BPEL PM 11g (TP4). This article concluded that true parallellism hardly exists. …
One question that keeps me awake at night is not exactly the position of BPEL within SOA in time to come. However, during the day, that question does …
The Flow activity is used to configure parallel activity in BPEL processes. In theory, activities contained in two or more branches (sequence containers) inside a Flow activity are …
![Dynamic and Conditional grouping in SQL queries – for flexible results from single query (oh and a useful case for the CUBE operator)]({"aperture":"0","credit":"","camera":"","caption":"","created_timestamp":"0","copyright":"http:\/\/seattletimes.nwsource.com\/ABPub\/2012\/08\/02\/2018836700.jpg","focal_length":"0","iso":"0","shutter_speed":"0","title":"","orientation":"0"} "Dynamic and Conditional grouping in SQL queries – for flexible results from single query (oh and a useful case for the CUBE operator)")