I always struggle to understand the official descriptions for the align attribute of the af:showPopupBehavior
tag. A picture is worth a thousands words so I just created screenshots of all the possible values:
: The popup appears underneath the element with the popup's upper-left corner aligned with the lower-left corner of the element. The left edges of the element and the popup are aligned
: The popup appears underneath the element with the (more...)
We are about to release a great addon for JDeveloper that can access a SOAP web service. For demonstration purposes we want to have a publicly available web service that anyone can use. Having this web service hosted on Google App Engine
has two major benefits: it is free and is accessible for anyone on the internet 24x7.
We wanted to implement a simple Java (JAX-WS) webservice on Google App Engine, but unfortunately this is (more...)
We're starting development on a new ADF application and the plan is to run this in a high-available weblogic cluster. The documentation
clearly states it is the responsibility of the developer to make ADF aware of any changes to managed beans in an ADF scope with a lifespan longer than one request. This means it is up to you to notify ADF of each change in a viewScope or pageFlowScope bean with the following code:
Lately I see a lot of ADF projects consuming SOAP web services. This is typically done by creating a JAX-WS Proxy in JDeveloper and invoking this proxy from java beans exposed through the Bean Data Control or through programmatic ADF Business Components. This post will show how to instrument your JAX-WS proxy so it can log the SOAP request, payload and potential fault to an ADFLogger. This can be a very valuable tool during development (more...)
This post will describe how to configure your ADF Faces project for development through web.xml context parameters as well as enabling debug mode in trinidad-config.xml. It will also show how to override these settings for production deployment with a deployment plan even though the setting in trinidad-config.xml (more...)
The JDeveloper auditing framework can be a very valuable tool in delivering high quality code. It not only gives you warnings and errors during development, but can also be run from the command-line on a build server. One thing that always annoyed me is the limited possibilities for suppressing individual (more...)
It is not uncommon for people to override the
method in an ADF BC Entity
to do some additional work just before posting changes to the database. The official documentation even describes this extension point as being an equivalent to the Oracle Forms Post Processing triggers
I've had issues with this blog sometimes being very slow on my iPhone when using Wi-Fi. I finally figured out what is going and it seems like Vodafone (Netherlands) are to blame.
I noticed my browser is trying to download http://220.127.116.11/jsi/flash.php?file=gordon.js&max-age=3600
which never succeeds (more...)
According to wikipedia
24% of the world's population uses a comma as decimal separator, including The Netherlands where I live. This means entering numeric information with the numeric keypad on the keyboard can be challenging. You can only use it to type a decimal point (.) while we need (more...)
It is not uncommon for an ADF application to invoke DBTransactionImpl::postChanges()
to perform database DML without invoking commit (or rollback). This is typically done in environments where we also want to invoke PL/SQL logic in the database that already needs to see these pending changes.
The developer should make sure (more...)
I have previously installed JDeveloper 11 on my MacBook Pro running Mac OS X Mountain Lion (10.8). Basically you download the generic installer from Oracle and run:
java -jar jdevstudio11124install.jar
Today I tried it again and the installer does start but with a very small screen only showing the (more...)
Sometimes you have the need for credentials (username/password) in your ADF, or other Fusion Middleware, application. I've seen numerous solutions with property files, web.xml context parameters, deployment plans, etc. Most of these run into problems with SysOps or anyone else worried with security. You don't want these credentials scattered (more...)
I like to tweak some of the preferences in the Tools menu of JDeveloper. I thought I would document them here for my own reference and in case anyone else is interested. I'll try to list all the settings I typically change from their default. These are ordered and grouped (more...)
Last month I posted about the basics of creating custom ClientBehavior in ADF Faces
This post will show how to create your own ADF Faces client behavior JSP tags which makes them suitable for ADF version 11gR1, also known as version 11.1.1, and version 11gR2 (11.1.2) when not using Facelets.
ADF Faces client behavior tags provide declarative solutions to common (more...)
I write sample applications to accompany blog posts. You can typically download the project as a zip file or get access to the subversion repository. But I also wanted to make it as easy as possible for people to see the running application. This where the Oracle Cloud
comes in. (more...)
This post will show how to use the ADF Logger for performance analysis and how to instrument your own code so it shows up in this analysis. Every ADF developer should know, or learn, about the ADF Logger. If you are new to the logger than read up on it at the (more...)
Running a tech/developer blog means I will be posting source code and other technical text. This requires proper syntax highlighting and use of monospaced fonts. Unfortunately blogger.com doesn't really support this out of the box so we need to resort to 3rd parties. Alex Gorbatchev created an awesome syntax (more...)
We are developing an application where data processing speed is important and users have to enter a lot of dates into the system. This is replacing a legacy Oracle Forms system where people were used to entering dates without any separators. For example they want to enter 120613
for June (more...)
I've been away from blogging for too long. My old blog succumbed to spam way back. It just got too bad and I ended up shutting down my blog.
I am now putting my faith back in modern anti-spam technology and giving it another try with Google's Blogger. There's just (more...)