Mixing identifier types increases the potential for negative consequences when porting between Oracle and PostgreSQL databases.

Object Oriented Programming is a programming style in which the program is made with components which match to real world objects.

Big Server, Big Data, Mobile, IoT what problems does it not solve?

Here's a similar follow up to the previous rsyslog + Redis + Logstash recipe, this time with Kafka instead of Redis.

A list of tools you can use with you OSX devices for DevOps and agile processes.

An MVC Controller is a JAX-RS resource method annotated with @Controller. If a class is annotated with @Controller, then all resource methods of this class are regarded as controllers.

How to use Kerberos authentication with microservice architectures and API gateways.

This is a quick tip on how to get a vanilla Java Docker image running on the OpenShift Origin open source cloud platform, complete with the WildFly Java EE application server.

By default, sources of a dependency are downloaded and added to a project, but not Javadoc sources. Gradle can use IntelliJ IDEA and Eclipse project files to download them.

Detailed guide on how to install and configure Keycloak, an open-source identity and access management solution, on Apache Tomcat server

You can write text on an image with ASP.NET and C#. Learn how.

The Eclipse ecosystem is catching up with the wave of Docker popularity with some bleeding edge tools. Try them out, and give some feedback!

Looking to learn about building a Scala/Java Gradle project in GitLab? Here's how to do so with Jenkins.

These two simple steps will allow you to configure versioned resource URLs in Spring MVC, allowing the browser to cache resources for an unlimited time and update version info on the URL when a resource is changed.

Chronicle FIX is a low latency FIX database for Java. Check out why it's so awesome and boosts performance.

Basically, there are two ways of preparing a statement: on the server-side or on the client-side.

Here's a fun little experiment showing the power of Swift's Protocol Extensions to apply a CIGaussianBlur Core Image filter to any UIView with no developer overhead. The code could be extended to apply any Core Image filter such as a half tone screen or colour adjustment. Blurable is a simple protocol that borrows some of the methods and variables from a UIView: var layer: CALayer { get } var subviews: [UIView] { get } var frame: CGRect { get } func addSubview(view: UIView) func bringSubviewToFront(view: UIView) ...and adds a few of its own: Obviously, just being a protocol, it doesn't do much on its own. However, by adding an extension, I can introduce default functionality. Furthermore, by extending UIView to implement Blurable, every component from a segmented control to a horizontal slider can be blurred: extension UIView: Blurable { } The Mechanics of Blurable Getting a blurred representation of a UIView is pretty simple: I need to begin an image context, use the view's layer's renderInContext method to render into the context and then get a UIImage from the context: UIGraphicsBeginImageContextWithOptions(CGSize(width: frame.width, height: frame.height), false, 1) layer.renderInContext(UIGraphicsGetCurrentContext()!) let image = UIGraphicsGetImageFromCurrentImageContext() UIGraphicsEndImageContext(); Once I have the image populated, it's a fairly standard workflow to apply a Gaussian blur to it: guard let blur = CIFilter(name: "CIGaussianBlur") else { return } blur.setValue(CIImage(image: image), forKey: kCIInputImageKey) blur.setValue(blurRadius, forKey: kCIInputRadiusKey) let ciContext = CIContext(options: nil) let result = blur.valueForKey(kCIOutputImageKey) as! CIImage! let boundingRect = CGRect(x: -blurRadius * 4, y: -blurRadius * 4, width: frame.width + (blurRadius * 8), height: frame.height + (blurRadius * 8)) let cgImage = ciContext.createCGImage(result, fromRect: boundingRect) let filteredImage = UIImage(CGImage: cgImage) A blurred image will be larger than its input image, so I need to be explicit about the size I require in createCGImage. The next step is to add a UIImageView to my view and hide all the other views. I've subclassed UIImageView to BlurOverlay so that when it comes to removing it, I can be sure I'm not removing an existing UIImageView: let blurOverlay = BlurOverlay() blurOverlay.frame = boundingRect blurOverlay.image = filteredImage subviews.forEach{ $0.hidden = true } addSubview(blurOverlay) When it comes to de-blurring, I want to ensure the last subview is one of my BlurOverlay remove it and unhide the existing views: func unBlur() { if let blurOverlay = subviews.last as? BlurOverlay { blurOverlay.removeFromSuperview() subviews.forEach{ $0.hidden = false } } } Finally, to see if a UIView is currently blurred, I just need to see if its last subview is a BlurOverlay: var isBlurred: Bool { return subviews.last is BlurOverlay } Blurring a UIView To blur and de-blur, just invoke blur() and unBlur() on an UIView: segmentedControl.unBlur() segmentedControl.blur(blurRadius: 2) Source Code As always, the source code for this project is available at my GitHub repository here. Enjoy!

This post will try to remove the magic from the phrases "unsustainable allocation rate" and "keeping your allocation rates low."

When you restart your enterprise application, what do your clients see when they open the web browser?

Learn how to use operator overloading in Java, using it's existing conventions.