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Spring3 + JPA2 + Java EE6 App Server = Confusion Over Configuration

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Spring is great, JavaEE6 is great and latest JavaEE6 Application servers are also great. This post is not a rant on Spring Vs JavaEE6, but my experience of porting a Spring3+JPA2(Hibernate) application on JBoss AS-7.1 App Server. My application requirement is very simple: Developing a couple of SOAP based webservices using Spring3.1 and JPA2(Hibernate) and host it on JBoss AS ...

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Things Great Engineers (almost) Never Say

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My job as a recruiter of software engineers and my 12 years as a user group leader have provided me the opportunity to speak with many talented technologists since entering the business in 1998, and through my interactions I’ve been able to notice several behavioral patterns shared by those that are considered to be the most skilled. To develop a ...

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Using Hudson/Jenkins to diagnose that intermittent failure

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I have been working on one of those intermittent bugs that just won’t reproduce on my machine; but will reproduce intermittently on other machines while they are running automated testing. I filled the code with trace statements, now I suspect the problem is in code that I don’t control and doesn’t appear to have much in the way of diagnostics ...

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Bad developer – good boss

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While I am typing this, some developer is creating his kick-off application that will make him a millionaire. Well ok, wealthy enough to sustain his small business and motivate him to create more. At this moment some other developer is publishing his revolutionary application or game on Google Play store or Apple’s Appstore or a website out there. High hopes ...

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Bad Things Happen to Good Code

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We need to understand what happens to code over time and why, and what a healthy, long-lived code base looks like. What architectural decisions have the most lasting impact, and what decisions made early will make the most difference over the life of a system. Forces of Compromise Most of the discussion around technical debt assumes that code degrades over ...

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Android: Multi-touch gestures controller

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Few of our projects (ours or for clients) required to implement a multi-touch features for manipulation over images with the standard gestures (drag&drop, rotate, zoom). While an implementation of a multi-touch controller is challenging and fun thing to do, it consumes a lot of time and if there is something ready and simply works, why reinvent the wheel? So we ...

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Mocking with JodaTime’s DateTime and Google Guava’s Supplier

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Introduction If you’re a seasoned unit tester, you’ve learned to take note when you see any code working with time, concurrency, random, persistence and disc I/O. The reason for this is that tests can be very brittle and sometimes down-right impossible to test properly. This post will show how to abstract out ‘time’ by injecting a replacement for it in ...

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Apache Hive on Windows in 6 easy steps

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Note: You need to have cygwin installed to run this tutorial, as Hadoop (needed by Hive) needs cygwin to run on windows. At a minimum, Basic, Net (OpenSSH,tcp_wrapper packages) and Security related Cygwin packages need to be present in the system. Here are the 6 steps: 1. Download WSO2 BAM 2.0.0. It’s free and open source. 2. Extract it to ...

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Android: Finding the SD Card Path

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Finding the SD Card path in Android is easy right? All you have to do is use Environment.getExternalStoreDirectory(), and you’re good to go! Well, not quite. After all, that’s what StackOverflow says. If you actually try the above method on a Samsung device, life won’t be fun for you. Environment.getExternalStoreDirectory() actually returns the incorrect path on most Samsung devices. That’s ...

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