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How to optimize Hibernate EllementCollection statements


Introduction Hibernate supports three data mapping types: basic (e.g String, int), Embeddable and Entity. Most often, a database row is mapped to an Entity, each database column being associated to a basic attribute. Embeddable types are more common when combining several field mappings into a reusable group (the Embeddable being merged into the owning Entity mapping structure). Both basic types ...

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How to show a Toast for a specific duration in Android


In the Android SDK, an android.widget.Toast is a small message that pops up at the bottom of the screen to display an information. The toast will disappears by itself after a specified duration. Here is an example of what a toast looks like and how to display one :           Context context = getApplicationContext(); Toast.makeText(context, "Hello ...

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Coding: Visualising a bitmap


Over the last month or so I’ve spent some time each day reading a new part of the Neo4j code base to get more familiar with it, and one of my favourite classes is the Bits class which does all things low level on the wire and to disk. In particular I like its toString method which returns a binary ...

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Sublime VS. Atom: Can GitHub Take the Lead?


Comparing Sublime and Github’s Atom in 10 major categories Sublime has been the undisputed text editing champion for a while now. But a new contender – GitHub’s Atom – is stepping into the spotlight, making noise and trying to steal the not-so-old champion’s thunder. Some 30 versions after the release of Atom’s beta, we felt it would be a good time to test these two head-to-head. On ...

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Grails Goodness: Custom Data Binding with @DataBinding Annotation


Grails has a data binding mechanism that will convert request parameters to properties of an object of different types. We can customize the default data binding in different ways. One of them is using the @DataBinding annotation. We use a closure as argument for the annotation in which we must return the converted value. We get two arguments, the first ...

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Software Development Lessons Learned from Consumer Experience


Because we software developers are also inevitably consumers of others’ software applications, we are undoubtedly influenced in the creation of our own software by the software we use. For example, our opinions of what makes an effective interface for users are influenced by our experiences “on the other side” using someone else’s software interface. This is particularly true for web ...

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Simple Class to Measure Latency


This is a very simple class I wrote to measure latency.  It’s not the Rolls Royce solution that is HDRHistogram but if you want to add just one class to your project this does the trick quite nicely. Here’s a simple test program to show you how it’s used: package util; public class LatencyMeasureExample { public static void main(String[] args) throws ...

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#102030: Celebrating 20 Years of Java by Running 20 10K in 30 Days


May 23rd, 1995 was a momentous day in the history of technology. It does not seem the industry realized that a language released on that day would completely change the landscape of technology in the coming years. Java will be celebrating 20th birthday on the same date this year. 20 years of Java, wow! Go back 20 years in the memory lane and think ...

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Functions Named as Adjectives


I’ve got a shorter one this week. Partially, that’s because I was part way through a post before deciding to scrap it. Partially, it’s because I’ve written a few mid-week blurbs this week. Lastly, it’s because I don’t think I could stretch this article to be all that big. :) Naming Functions Generally, people are told to name methods and ...

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Continuous Delivery with Docker Containers and Java EE


Organizations need a way to make application delivery fast, predictable and secure and the agility provided by containers, such as docker, help developers realize this goal. For Java EE applications, this enables packaging of applications, the application server, and other dependencies in a container that can be replicated in build, test, and production environments. This takes you one step closer ...

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