Projecting by Event Type

While projections can target specific stream or streams, it is also possible to project by event types. The following sample demonstrates this with the CandleProjection that implements the ViewProjection interface to build Candle projections from events of type Tick.

Introduce a type to hold candle data:

<[sample:sample-type-candle]>

This data will then be populated and updated from observing ticks:

<[sample:sample-type-tick]>

We then introduce a projection that subscribes to the 'Tick' event:

<[sample:sample-candleprojection]>

Lastly, we configure the Event Store to use the newly introduced projection:

<[sample:sample-project-by-event-type]>