RichFaces plugin for NetBeans updated
About a year ago, during JavaOne 2008, Geertjan Wielenga and I created NetBeans modules for JBoss RichFaces support. Last week we updated the modules so now version 3.3.0.GA of …
Category: Java
ADF Faces RC – Highlight partially refreshed areas to enlighten the user about automatic updates
One of the rich aspects of ADF Faces RC (and most Web 2.0/AJAX components) is functionality that performs Partial Page Refresh operations: actions by the user trigger asynchronous communication between …
Using a general superclass to refresh SQL-calculated attributes in your dirty ADFBC View Object
In our current ADF10g project we have many refresh issues. After an insert or update some view object attribute values are not shown. Many attributes of our entity based …
How to let your user know his session has expired in an ADF10g application
In a proper and user-friendly application, it is a good idea to let your user know when his session has expired. Or to inform him that his session is …
Tag Cloud analysis in SQL and PL/SQL – Using Collections, Table Operator, Multiset and Collect operator
![Tag Cloud analysis in SQL and PL/SQL – Using Collections, Table Operator, Multiset and Collect 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"} "Tag Cloud analysis in SQL and PL/SQL – Using Collections, Table Operator, Multiset and Collect operator")
Another world shattering topic: analyzing tag clouds. This article describes a very simple first step for some analysis at database level of tags that have been associated with database …
How to declaratively instruct ADF Faces RC to partially refresh other components upon an event
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 …
ADF Masterclass Seminar – 25th March, Norway – Flying with ADF
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 asynchronous mechanisms in Java and JavaScript for improving the user experience
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 …
Management of Boilerplate Text in JavaServer Faces Applications
February 20, 2009
IT, Java, Oracle, Oracle Application Development Framework, Oracle WebLogic Server, Web HTML5 CSS3
No Comments
(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 …
Asynchronous processing in Java applications – leveraging those multi-cores
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 …
Logging in JDeveloper 11g / WebLogic Server
February 17, 2009
Java, Oracle, Oracle Application Development Framework, PL/SQL, Software Development, Tools, Web HTML5 CSS3
4 Comments
When developing an application it makes sense to add logging to this application. The Apache Commons Logging is a way to implement logging to your application independent of the …
Echo2: Building a web application without web skills…without web skills…
Echo2… oh no, naf! (not another framework). I just want java, not some tricky framework I have to learn into depth before being productive. Ok, then you’re up to …
SOA Suite 11g (TP4) – Create Mediator based SCA Composite Application from XSD – write to output file using File Adapter
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 …
Reverting tagged version back to trunk in subversion using Eclipse (Subclipse)
Yesterday I was given a new assignment. Of a certain system all development was stopped a month ago. The latest version, deployed and tested on the test environment, will …
ADF 11g – include meta data tags in HEAD element – using af:document and metaContainer facet
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 …
ADF 11g – persisted run time user UI personalization or: Impatient man's MDS
January 9, 2009
IT, Java, Oracle, Oracle Application Development Framework, Oracle WebLogic Server, Tools
3 Comments
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 …
ADF 11g – reducing the price of richness or how to streamline downloading Javascript Resources for ADF 11g Rich Client components
January 7, 2009
IT, Java, Oracle, Oracle Application Development Framework, Web HTML5 CSS3
3 Comments
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, …
The Double Checked Locking confusion
Last Monday I was attending a presentation of Brian Goetz about the Java Memory Model. One of his points was about lazy initialization which concluded with "don’t use the …
JSF 2.0 and Servlet 3.0 Specifications – (almost) ready for take-off – What is new and exciting in Servlet 3.0?
December 12, 2008
IT, Java, Oracle, Oracle Application Development Framework, Oracle WebLogic Server, Web HTML5 CSS3
No Comments
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 …
Devoxx 2008: Does the java language have a future?
A lot of interesting stuff is going on. More and more (dynamic typed) languages are appearing and getting more attention. Are they better than the Java language?
Rapid development of Rich JSF Web applications on top of EJB/JPA persistence (JSF on Rails – Demo 1)
December 10, 2008
IT, Java, Oracle, Oracle Application Development Framework, Tools, Web HTML5 CSS3
No Comments
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 …
The meeting of the minds – (fka Devoxx fka Javoxx fka JavaPolis)
December 9, 2008
Java, Oracle, Oracle Application Development Framework, Oracle WebLogic Server
No Comments
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 …
EJB Dependency Injection of Session Bean Facade in JSF 1.2 on WebLogic 10.3 (JSF with JPA)
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 – Use the Change(d) Indicator to make AJAX originated value refresh explicit to the user
December 4, 2008
IT, Java, Oracle, Oracle Application Development Framework, Oracle WebLogic Server, Web HTML5 CSS3
1 Comment
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 …
Accessing JVM arguments from Java (to determine if JVM is running in debug mode)
The other day, I was using the JDeveloper debugger to locally debug some code in an application that uses (and therefore becomes part of) an Oracle Coherence data grid. As …
Howto show and save image as blob type with seam
In a project where i am working on, we needed to show an image and the image should be change when a user would like to do that. For …
Java: Generating PDF and Previewing it as an Image – iText and PDF Renderer
November 28, 2008
IT, Java, Oracle, Oracle Application Development Framework, Oracle WebLogic Server, Tools
6 Comments
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 …
ADF 11g – Why use skinning? Why not use simple external CSS stylesheets?
November 25, 2008
IT, Java, Oracle, Oracle Application Development Framework, Web HTML5 CSS3
5 Comments
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. …
Context Sensitive Resource Bundle entries in JavaServer Faces applications – going beyond plain language, region & variant locales
November 11, 2008
IT, Java, Oracle, Oracle Application Development Framework, Web HTML5 CSS3
3 Comments
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 …
Migrating the ADF 10g Hierarchical Table Report to JDeveloper & ADF Trinidad and onwards to 11g (RichFaces)
November 10, 2008
IT, Java, Oracle, Oracle Application Development Framework, Web HTML5 CSS3
No Comments
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 …
Refreshing breadcrumbs in an ADF application that uses JHeadstart
November 1, 2008
IT, Java, Oracle, Oracle Application Development Framework, Oracle WebLogic Server, Web HTML5 CSS3
1 Comment
Breadcrumbs are a navigation technique used in many applications, and its popularity grows. Its purpose is to give users a way to keep track of their location. Breadcrumbs typically …
ADF 11g RichFaces – handling the client side double click to invoke a server side operation
October 31, 2008
IT, Java, Oracle, Oracle Application Development Framework, Tools, Web HTML5 CSS3
2 Comments
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 …
ADF 11g RichFaces: implementing a 'pick which columns to show & hide' feature for RichTables
October 29, 2008
IT, Java, Oracle, Oracle Application Development Framework, Web HTML5 CSS3
No Comments
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 …
ADF 11g RichFaces – Details popping up all around us – Quick introduction to the ADF 11g Popup component
October 28, 2008
IT, Java, Oracle, Oracle Application Development Framework, Web HTML5 CSS3
No Comments
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 …
Investigation into the true parallellism of the Oracle BPEL PM Flow activity in 11g (Technical Preview 4) – on flow, sequence, wait and (a)synchronous calls
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 …
RESTful service based on ADF Business Components, publishing enterprise database contents the REST way
After three introductory and exploratory articles on RestLet, RESTful Services and the creation of the latter using the former in JDeveloper 11g as well as hooking it up with …
Publishing resources exposed by ADF Data Control in RESTful services using RestLet and JDeveloper 11g
October 14, 2008
IT, Java, Oracle, Oracle Application Development Framework, Oracle WebLogic Server, SOA, Tools, Web HTML5 CSS3
No Comments
The previous two articles on RESTful services using RestLet and developing in JDeveloper 11g – First Steps with RestLet 1.1RC2 in JDeveloper 11g – restful services 101 and Extending …
First Steps with RestLet 1.1RC2 in JDeveloper 11g – restful services 101
WebServices are hot. Some more so than others. SOAP based WebServices are frequently seen as not very lean and agile. Robust – perhaps. Widely supported – no doubt about …
Hierarchical ADFTree with JDeveloper 11g
October 9, 2008
Java, Oracle Application Development Framework, Oracle WebLogic Server, Web HTML5 CSS3, Web/Java
6 Comments
There are different manners to display hierarchical data. One of the most intuitive ways is using a tree structure like a file browser. This enables the ability of simple …
JDeveloper 11g first impressions.
Oracle has just released JDeveloper 11g. I was off course very interested so here are my first impressions. Instead of just unzipping the download as we used to do, …