Red Samurai ADF Performance Audit Tool Major Update v 5.0

Our ADF performance audit tool is growing and getting more advanced with each release. Current major update v 5.0 brings ADF Click History integration and allows to track ADF UI client request time. This allows to understand, how long it takes to execute action from user perspective. Combined with ADF BC performance monitoring, we could give precise answer about performance bottlenecks from top to bottom.

New features in v 5.0:

1. Redesigned (more...)

Optimize ADF HTTP Response Size with ChangeEventPolicy

You should read this post, if you are looking how to reduce ADF HTTP response size. This can be important for ADF application performance tuning, to improve PPR request response time. By default in ADF 12.2.1, iterator is assigned with ChangeEventPolicy = ppr. This works great for UI component bindings refresh, no need to set individual partial triggers. On other side, this generates extra content in ADF HTTP response and eventually increases response (more...)

Machine Intelligence for Oracle Developers

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ADF 12c Custom Property Groovy and AllowUntrustedScriptAccess Annotation

To execute Groovy expression in ADF 12c (to call Java method from Groovy), you must specify trusted mode. Read more about it in my previous post - ADF BC 12c New Feature - Entity-Level Triggers. Setting mode to trusted, works in most of the cases. It doesn't work if we want to execute Groovy expression (calling Java method in ViewRow or Entity class) for custom property. In a case of custom property and Groovy calling (more...)

Partially Applied Functions in JavaScript

First of all, what are partially applied functions? There’s a little bit of theory here. The concept of partially applying functions stems from the functional way of programming. There it’s tightly linked with a concept called currying. Currying says that every function can be written as a function with only one parameter. By currying and un-currying you can achieve this goal. If this sounds very hard and complex, do not fear, in essence it’s quite (more...)

Integration Architecture with Java EE and Spring

The O'Reilly Software Architecture Conference in New York happens this week. And I had the pleasure to give a tutorial together with Josh Long about how to integrate Java EE and Spring. We've been joking about this one since a while. The super stupid biased view onto both technologies which some people have in mind was something that bugged both of us since a while. Another important reason for this talk was, that we both (more...)

Taking IBM Bluemix OpenWhisk for a Test Drive


OpenWhisk is a new event-driven platform that lets developers quickly and easily build feature-rich apps that automatically trigger responses to events. To read more about it view the link below. In this simple example we will explore it it's use from IBM Bluemix by returning Todays date.

https://developer.ibm.com/open/openwhisk/

Steps

1. Login to Bluemix using http://bluemix.net

2. Click on "Try OpenWhisk" as shown below


3. Once logged in to the new (more...)

Open Source Machine Learning for Oracle Developers

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Monitoring ADF 12c Client Request Time with Click History

You must be excited to read this post, I will describe one very useful feature, available in ADF 12c. This feature - Click History. You can follow steps described by Duncan Mills, to enable and read click history data in server log. There is one more option available - we can read click history data from ADF request (captured by filter class) and log it in custom way (for later analysis). Click history gives such (more...)

Inflexible Security (MailChimp fail)

Maybe I shouldn’t have written about flexible security, because I immediately starting hitting inflexible security, locking me out.

Today’s fail is courtesy of MailChimp.com, which I use for my newsletters. It’s OK that they decided they want a confirmation when I log on to my account from India, but it is not OK that they require a text message passcode with no other option.

I have my phone in flight mode, because I don’t (more...)

ADF BC View Criteria Query Execution Mode = Both

View Criteria is set to execute in Database mode by default. There is option to change execution mode to Both. This would execute query and fetch results from database and from memory.  Such query execution is useful, when we want to include newly created (but not commited yet) row into View Criteria result. Newly created row will be included into View Criteria resultset.

Download sample application - ViewCriteriaModeApp.zip. JobsView in sample application is set (more...)

Converting string configuration properties to other types, with a bit of Optional.

Somedays you come across some code and think that's pretty, why didn't I think of that? So my long time colleague Mark Warner has a nice twist on the standard name/value store pattern using method references to deal with converting from a String.

    int size = store.getProperty("cache.limit", 500, Integer::parseInt);
    boolean enabled = store.getProperty("cache.enabled", true, Boolean::getBoolean);

I took his example and refactored it slightly to return Optional, and I ended up with (more...)

Your first Lagom service – getting started with Java Microservices

I've been heads-down in writing my next O'Reilly report and didn't had enough time to blog in a while. Time to catch up here and give you a real quick start into the new microservices framework named Lagom. It is different to what you might know from Java EE or other application frameworks. And this is both a challenge and opportunity for you to learn something new. If you can wait for a couple of (more...)

Tomcat Runtime added to Web Console of IBM Bluemix

I almost always use the tomcat buildpack within IBM Bluemix for my Java based applications. By default IBM bluemix will use the IBM Liberty buildpack for java apps unless you specify otherwise. The buildpacks on Bluemix can be viewed using "cf buildpacks" and the tomcat buildpack is referred to as "java_buildpack"

So to use the tomcat buildpack in a manifest.yml you would target it as follows

applications:
- name: pas-javaapp
(more...)

Machine Learning for Oracle Developers

Oracle doesn't offer any solutions for machine learning. It is time for Oracle developers to look elsewhere.

If you don't know where to start, attend our webinar and find out how you can apply Numenta's open source machine learning technology to real world enterprise IT problems.



Change ADF BC Data Update Locking with FOR UPDATE WAIT

Each time when data is changed and updated through ADF BC, before posting changes to DB, SQL query with FOR UPDATE NOWAIT is generated and executed. In case if other process locks row to be updated, or another user in the same moment is updating it, error will be generated and update will be stopped. There might be use cases, when you would like to wait for certain period of time, until row will be (more...)

Machine Intelligence for Enterprise IT

The need to gain actionable insights from ever increasing data sets is a huge problem for BI professionals. Attend our webinar presented by Numenta, a machine intelligence company founded by Jeff Hawkins (the founder of Palm Inc.), and learn how machine intelligence can help you solve real world enterprise IT problems.

Watch the short video about Numenta's story and the importance of their approach to machine learning:



If you want to learn how (more...)

ADF BC Version Number and Change Indicator to Track Changed Rows

One of the common use cases in enteprise applications is to track concurrent user changes. There are two types of changes possible - when two real users are changing data in the same row, or when single user is changing data and same row is updated by PL/SQL procedure/function (all happen in the same user session). In the first case, we would like to inform a user - row data was changed (two different users (more...)

Free Mini Book about Reactive Microservices

Working with and talking about microservices has been my focus for a while already. And since I started working at Lightbend I already had the pleasure to work with some amazing people. One of them is Jonas Bonér and it has been a real pleasure helping with the creation of this little mini book about reactive microservices. Many of the concepts described in this book are the foundation for our newly open source microservices framework Lagom. It makes (more...)

IBM Bluemix NodeRed Demo using Twitter and Telstra SMS API

In this example I integrate Twitter Feed with Telstra SMS API to send an SMS based. It is based on the wrapper application which exposes the Telstra SMS API on Bluemix as per a previous Post.

http://theblasfrompas.blogspot.com.au/2015/08/integrating-telstra-public-sms-api-into.html

It is assumed you have NodeRed NodeJS application running on Bluemix and are at the Editor as shown below.



Steps

1. Drag a "Social -> Twitter" node onto the editor
2. Double (more...)