Fixes for ADF Cloud User Experience Rapid Development Kit (RDK) UI Layout Issues

If you was evaluating Oracle RDK UI template, probably you noticed information popup coming up, when RDK home page is loaded. Popup is loaded through showPopupBehavior listener, which is executed on Welcome page load event. Such popup is not required in practice, and usually is disabled. But as soon as you disable it, there will be layout issues with Welcome page. User information widget will not align the name and menu navigation items will not (more...)

Nice Trick to Get ADF LOV Description Text

I will tell you about nice trick to display LOV description. Usually you would create separate attribute in VO for LOV description and base LOV on this attribute (read about it in my previous post - Defining the LOV on a Reference Attribute in Oracle ADF 11g). But there is one more way - it makes it much faster to define LOV on description, but you should be aware about additional SQL statement executed (more...)

Hey JAVA-developer, why don’t you love your database

Why this post?

Partly, this blogpost is a result of a promise to Lukas Eder. Basically my vision adheres quite nicely to the “Thick Database” driven by Bryn Llewellyn and Toon Koppelaars who, understandibly, drive this from an Oracle perspective.
It –more than of course- also nicely fits EnterpriseDB or even vanilla PostgreSQL database landscapes.

There is apparently still so much confusion in the world on the how, why and what of (more...)

ADF PopUp Event Context Launcher

I will describe how you could use ADF popup event context to pass parameters into popup. This could be useful if you want to develop reusable popup, which should accept different type of parameters from various launcher components.

In this example - popup is loaded from context info. Launcher component - output text is assigned with attribute, reading its value from binding. Our goal is to pass attribute value into popup:


In order to be (more...)

ADF Multi Task Flow Binding and Tab Order

I had a post while ago about ADF multi task flow binding and loading dynamic regions - Building Custom UI Shell with ADF 11g R2. In that sample, new region was opened in the first tab position. Meaning tab order was from right to left. It is more natural to have left to right tab opening order. This can be done too, check updated sample app - we need to control disclosed property and add (more...)

Improved Display for Empty Field Values in ADF Form

I had a task in the project, to improve display for empty field in ADF form. By default, if there is no row data in the result - all input text entries in ADF form will be hidden, user will see only labels. This is not ideal, most of time users would prefer to see disabled input text boxes instead.

In this example below, on purpose I search for non existing value and this causing (more...)

Oracle Java Cloud Upgrade to 12.2.1.2

We finished upgrade of our production Oracle Java Cloud instance to 12.2.1.2. This allows us to use new ADF BC REST features (16.5.2 What You May Need to Know About Versioning the ADF REST Framework).

Upgrade to newer version in Oracle Cloud is similar to on-premise upgrade. We need to create new service instance for software release 12.2.1.2 and later re-deploy our app, re-configure data (more...)

New Release ADF EMG Selenium Tools v3.0.0

Uncategorized
| Feb 27, 2017
First of all, the github repository is now under the ADF EMG repository and not anymore under Wilfred his personal account. On the release page there is a new release of the Selenium Tools, version 3.0.0.

This new version is based on Java 8 (version 52+) and compatible with JDeveloper (and thus ADF) 12.2.1.x. The selenium tools work the same as they always did and the components are still in (more...)

ADF Editable Table – Recommendation For Data Entry Optimization

I will explain data entry use case related to ADF table. Specifically I will talk about a bit more complex case, when some columns in the table are set with AutoSubmit=true, to force values to be submitted to the server on change. This can be required when validation rule must be processed on value change or there are dependent re-calculated fields in the same row.

If you are using AutoSubmit=true columns in ADF table, it (more...)

#DEVCAMP17 wrap up

 

Yesterday I attend the annual barcamp DEVCAMP of the DOAG development community. There are mostly developers with SQL, PL/SQL, Forms & Reports, ADF, JET background and some Java, Javascript and APEX developers too. And not to forget: 1 dba and some managers. Here are my summary.

I arrived on evening before just in time for the life cooking event and later at the bar to meet lot of the people I already know and some new too.

The morning begins with (more...)

Setting Invalid Fields for the UI in ADF BC Groovy

What if you have entity level validation rule and want to attach validation error message to specific field. By default this is not possible - all entity level validation error messages are displayed in the popup and are not attached to the fields (differently than attribute level validation rule messages).

Apparently there is a way to achieve such requirement with Groovy expression, this can be executed from entity level validation - adf.error.addAttribute('Salary'). In (more...)

ADF 12c New Groovy API to Work with View Object Methods

I have interesting topic to share - new Groovy API in ADF to work with View Object, apply View Criteria, execute it. I have discovered it while experimenting with new features and functionality in ADF 12c. Starting from ADF 12.2.1, we have an option to code Groovy in separate file with extension .bcs - ADF BC Groovy Improvements in ADF 12.2.1. This makes sense especially with this new Groovy API - (more...)

Contextual Event API Improvements in ADF 12.2.1.x

ADF 12.2.1.x brings improved API support for Contextual Event implementation - this should simplify Contextual Event usage. Now Contextual Events can be produced without referencing ActionEvent or SelectionEvent, also there is no need to define Data Control to implement Contextual Event handler. Read more in ADF 12.2.1.x documentation - 46.4 Creating Contextual Events Using Managed Beans. I will provide example and explanation how to use these improvements.

Download (more...)

Put Component References in the correct memory scope

Uncategorized
| Jan 24, 2017
Memory scopes itself can be confusing enough, therefor I always advise my fellow developers to use the ADF scopes as much as possible and avoid the JSF scopes if they can.

When using taskflows, a lot of times, we want to store values in a pageFlowScope bean, for example to use during the lifecycle of the taskflow on several pages. Now a common mistakes is to have the UI components bind to the same bean (more...)

#DOAG2016 wrap up

doag_wegweiser

Another DOAG is over and here are my summary.

Day 1

Unfortunately the early train from duesseldorf arrives not before 9:30, so I missed the first morning slot. But on the other hand I this was the slot where I had to decide between 8 presentations, which I’m interested in.

The first soft skill presentation was about creative techniques beyond brain storming. The mentioned 3 techniques was all unknown for me, maybe I give it (more...)

OOW16: What is new in ADF

Uncategorized
| Sep 23, 2016
It was not hard to find the ADF sessions this year at Open World, mainly because there was really only one session, Shay his session about new features in JDeveloper & ADF. It was worth seeing who would show op in the room and to be honest, it was quite crowded for an ADF session. 

JDeveloper 12.2.1.1.0 came out in June 2016, however, this new JDeveloper is only a Patch (more...)

JDeveloper Shortcut Keys: Go To File

Uncategorized
| Aug 23, 2016
I have been noticing that a lot of developers are either struggling with finding files in JDeveloper or taking a long time to open all the packages and browsing to the files. However, JDeveloper has a lot of shortcut keys that come in handy.

First of, a shortcut key to 'Go To Java Type', I think most developers know this one. It is the 'ctrl' + '-' on windows or '⌘' + 'J' on mac, (more...)

Set all WebLogic log levels to “Inherit” via WLST

Logging is a very useful feature of WebLogic.

Unfortunately the log levels, which are set after a clean install of WebLogic or some of the Fusion Middleware product creates a lot of noise and therefore it costs I/O performance.

Additional after analyzing an issue with logging often resetting the log level is forgotten.

Here you get a script to reset the log levels at regular intervals or after a trace session.

#!/usr/bin/python
execfile('get_environment.py')
 (more...)

Mastering Oracle ADF Bindings: Advanced Techniques

My Oracle OpenWorld presentation “Mastering Oracle ADF Bindings: Advanced Techniques” is now available for download from the OpenWorld web site. In this presentation, I talk about

  • Reading the Bindings tab
  • Bindings in the ADF lifecycle
  • Working programmatically with bindings
  • Getting the binding from a component
  • Working with dynamic bindings
  • Creating a binding programmatically

If you are interested in creating bindings programmatically, you should read Eugene Fedorenko’s blog post on this. He also makes (more...)

UKOUG Tech 14 in Liverpool

I’ll be going to the UKOUG Tech 14 conference in Liverpool in December to give one of my favorite presentations: “APEX or ADF? From Requirements to Tool Choice”. I’m also leading the Development Tools roundtable, which is always lively at the UKOUG conference. If you want to discuss your options as a developer in the Oracle world, UKOUG Tech 14 is the place to be.

APEX or ADF? From Requirements to Tool Choice
APEX or (more...)