Real Android apps leveraging db4o persistence engine (Part 1)

Real Android apps leveraging db4o persistence engine (Part 1) | Javalobby

Real Android apps leveraging db4o persistence engine (Part 1)
07.19.2010
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This the first delivery in a series of articles targeted at showing developers how db4o (an open source database that leverages today's object-oriented languages, systems, and mindset) is being used in several Android projects to avoid all the pitfalls and hassles of object-relational mapping while benefiting from an elegant and straight forward way to evolve a domain model which, in the end, translates into faster, easier upgrades for users.

There are many benefits to using an object database like db4o, including easier code maintenance, and the ability to create applications based on more complex data models. Unlike in rigid, predefined SQL tables, you can store dynamic, free-form data, which can be changed or amended any time. In addition, db4o allows for data replication, another missing element in Android's software stack.

Let's take a look at the code in these projects to learn how developers leverage object database technology on their apps and also use the opportunity to introduce key concepts about db4o. Let's start with project DyCaPo.

DyCaPo stands for “Dynamic Car Pooling”, a system that facilitates the ability of drivers and passengers to make one-time ride matches close to their departure time, with sufficient convenience and flexibility to be used on a daily basis. The project is the result of research activities on the adoption of a FREE/OPEN Dynamic Carpooling system in the province of Trento, Italy.

Riccardo Buttarelli, chose db4o as the persistence engine in the client application for the DyCaPo Service running on Android OS (aka dycadroid). If you check dycadroid's db4o configuration:

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