UC Mobile Apps

JPA Bindings for Vaadin

UC Mobile Apps — Sun, 06 Dec 2020 21:17:52 +0000

Version 1.8 provides bindings for Vaadin Forms and Vaadin Grid.The bindings can be customized for any datatype whether it is a custom model class or a java basic type. The custom code for the checkbox adds a component column in the grid initialization per default whenever a boolean field is displayed. Binding to fields in …

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Android Persistence Library

UC Mobile Apps — Tue, 20 Mar 2018 17:35:12 +0000

Compiler plugin for persistence layer and interprocess communication on Android We provide a source-code generator for the Java and Android eco-system that enhances a given datamodel by database and peer-class functionality without the need of an additional library. This is done by class templates that are transformed to autogenerated code at compile time. The application …

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Default methods aspect oriented programming on JPA entities

UC Mobile Apps — Sat, 02 Apr 2016 13:25:08 +0000

When working with entity classes it is common not to add additional logic to the objects. This avoids dependencies in the code to keep it modular and maintainable. With default methods it is possible to enhance the entities in a simple way without affecting the original notion of a business object that just keeps the data. …

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The right Java bytecode version for Android

UC Mobile Apps — Tue, 08 Dec 2015 14:09:44 +0000

Android up to API level 23 does not support all possibilities of Java 8, the classes that the compiler generates have a version flag to denote which bytecode extensions can be inside of it. If you ever happen to hit an error like this during your build UNEXPECTED TOP-LEVEL EXCEPTION: java.lang.RuntimeException: Exception parsing classes …

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Spliterator for “in-between” lambda processing

UC Mobile Apps — Mon, 30 Nov 2015 08:29:48 +0000

The usecase of summing up the distances in a list of vectors can benefit from parallelization on todays multi-core systems with Java 8 lambdas using a Spliterator. If one writes vecList.stream().mapToDouble( e-> e.getDistance( b ) Then a reference to the next point “b” isn’t there hence the calculation cannot be performed that way. There is a …

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Generic interfaces and algorithms

UC Mobile Apps — Fri, 27 Nov 2015 06:20:17 +0000

A common pattern in object oriented programming is interfacing classes that have the same methods. If these classes encapsulate a datatype and expose methods that take the datatype as a parameter, generic interfaces. The approach results in the ability to apply a generic algorithm on different encapsulated data types. For example vector math classes have …

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