CQRS - how to handle new report tables (or: how to import ALL history from the event store)

Question

I\'ve studied some CQRS sample implementations (Java / .Net) which use event sourcing as the event store and a simple (No)SQL stores as the \'report store\'.

Looks all g

Answer 1

For example in Axon Framework, this can be done via:

JdbcEventStore eventStore = ...;

ReplayingCluster replayingCluster = new ReplayingCluster(
            new SimpleCluster("replaying"),
            eventStore,
            new NoTransactionManager(),
            0,
            new BackloggingIncomingMessageHandler());

replayingCluster.startReplay();

Event replay is an area that is not completely documented and lacks mature tooling, but here are some starting points:

• http://www.axonframework.org/docs/2.4/event-processing.html#d5e1852
• https://groups.google.com/forum/#!searchin/axonframework/ReplayingCluster/axonframework/brCxc7Uha7I/Hr4LJpBJIWMJ