![]() With these options and many more available, why would anyone choose to develop with the plain vanilla Android database framework? Well, frameworks and wrappers can sometimes introduce more problems than they solve. This means you wouldn't be able to replace it in the future with a different solution. ![]() The concern for a solution like this is the fact that it's completely replacing a portion of the Android framework. It's good at marshaling and unmarshaling objects and performs well in benchmarks. It was designed from the beginning to interface with object-oriented languages. You'll still need to manage creation of the database, but querying objects becomes a lot simpler.Īnother developer decided to scrap SQLite entirely and created Perst. Its stated goals are to provide persistence of Java objects without using ContentValues and parsing Cursors, to be simple and lightweight, and to integrate with core Android classes without any hassle. ![]() One developer felt this pain and decided to write Cupboard, a thin wrapper around the Android SQLite framework. ![]() It provides many of the same features as OrmLite, but promises better performance (according to its website) at the cost of functionality, such as annotation-based setup.Ī common complaint about third-party libraries is the extra layer of complexity and performance bloat they can add to a project. Another option in the ORM arena is greenDAO. It removes the need to write most SQL and provides a programmatic interface for querying, updating, and deleting objects. OrmLite proffers automatic marshaling and unmarshaling of your persistent objects. One popular option for adding ORM support to SQLite on Android is OrmLite. Recognizing this, a few developers set out to solve this issue by creating mobile-friendly ORM libraries. Sadly, these libraries are much too performance intensive to be used out of the box in a mobile setting. For many years, object-relational mapping libraries have been available on server platforms to ease the pain of interfacing with databases. Many Android developers come from the enterprise world. A query may perform much differently based on which version of SQLite is executing it. This means the exact same database instructions may give wildly different results across platform versions. Different versions of Android ship with different implementations of SQLite. With Android, you'll need to watch out for version-specific functionality. This means you must also implement object caching (if desired), manage object instantiation, and manually perform dirty checking of any objects already in existence. You are completely responsible for writing objects into and reading them from the database. Observation of changes to an object are possible without requiring a refresh each time the object is inspected. It doesn't create a separate instance of an object each time the same piece of data is requested from the store. It manages to perform very well on mobile devices because it provides record-level caching. In fact, it handles marshaling and unmarshaling objects automatically. Since Android only provides a thin client to SQLite, you'll still need to write SQL and ensure your database tables are appropriately normalized.Ĭore Data allows us to think in terms of objects. For instance, Core Data abstracts away most of the SQL syntax and database normalization concerns facing database engineers every day. Unfortunately, many of those things aren't automatic on the Android platform. Most of us are familiar with at least some of the persistence features Core Data offers us out of the box.
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