MongoDB integration

MongoDB can be integrated by using the supplied MongoDB listeners from the barbelhisto-persistence-mongo package. Download the MongoDB listeners on Maven Central.

To register the listeners to BarbelHisto:

SimpleMongoListenerClient client = SimpleMongoListenerClient.create("mongodb://localhost:12345");
SimpleMongoLazyLoadingListener lazyloader = SimpleMongoLazyLoadingListener.create(client.getMongoClient(), "testDb", "testCol", DefaultPojo.class, BarbelHistoContext.getDefaultGson());
BarbelHisto<DefaultPojo> lazyHisto = BarbelHistoBuilder.barbel().withSynchronousEventListener(lazyloader).build();

To use BarbelHisto in conjunction with the listeners, applications should define an instance of BarbelHisto as singleton in their application. The singleton instance will be pre-fetched woth data as it is required on retrieve or save operations performed by the client. Also, the listeners will save new versions automatically to the defined MongoCollection.