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JArchitect v4.0 Released

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JArchitect version 4.0 is now available, as announced by JArchitect v4.0 Released. JArchitect can help java developers manage a complex Java code base. You can easily analyze code structure, specify design rules, do effective code reviews and master evolution by comparing different versions of the code. On its previous version, v3.0, which was released in September 2012, features like the ...

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Scala: Predicate Composition with Lens-Like Structures

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I’ve been playing around with a few ideas on how to apply a lens-like construct on arbitrary Scala collections that also combines the power of predicate composition as opposed to the more standard notion of functional composition. To ask a silly question, what if we could do something similar to a Scalaz Lens with a “get,” “set,” and “mod” but ...

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Biggest hindrances to being agile

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I often wonder how projects fail to be agile enough even though the team consists of talented team members.  So today I am planning to summarize few points that are the biggest hindrances to being agile in a team based environment. 1.  Laziness / Procrastination I think this is by far the number one hindrance to being agile.  This habit ...

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How do iBeacons work?

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iBeacons are certainly a trending topic recently. They allow indoor positioning, letting your phone know that you are in range of a beacon. This can have many applications: from helping you to find your car in a parking garage, through coupons and location-aware special offers in retail, to a whole lot of apps that we can’t imagine right now. There ...

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Code faster with Intellij IDEA live templates

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Intellij IDEA – in my opinion the most productive IDE for Java – comes with bunch of features helping getting rid of writing repetitive code – which is a everyday business no matter what language you use. One of them is live templates. Live templates contain predefined code fragments. You can use them to insert frequently-used or custom code constructs ...

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Project Student: Maintenance Webapp (read-only)

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This is part of Project Student. Other posts are Webservice Client With Jersey, Webservice Server with Jersey, Business Layer, Persistence with Spring Data, Sharding Integration Test Data, Webservice Integration and JPA Criteria Queries. When I started this project I had four goals. In no particular order they were to:             learn about jQuery and other ...

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Sustainable peace with database changes into a Java environment

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Sustainable peace for us is remove uncertainty. In this case over database changes the idea Active Record Migrations of Ruby was welcomed. And what does migration means for us?. Well, it is a convenient way to alter our database schema overtime in a consistent and easy way that removes a lot of uncertainty about database changes in our software development ...

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Using jOOQ with Spring: Configuration

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I have had my share of performance problems caused by ORMs. Although I have to admit that most of these problems were really caused by yours truly, I have started to think that using ORMs in read-only operations is not worth it. I started to look for alternative ways to implement these operations. That is how I ran into jOOQ ...

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Project Student: JPA Criteria Queries

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This is part of Project Student. Other posts are Webservice Client With Jersey, Webservice Server with Jersey, Business Layer, Persistence with Spring Data, Sharding Integration Test Data and Webservice Integration. We’ve covered basic CRUD operations but that doesn’t take us very far. Spring Data makes it easy to include basic searches but it’s important to have other standard options. One ...

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