EventMachine Aggregate Schema

[codeliner]

• Optionally pass JsonSchema of aggregate state when aggregate is described for first time
• OR aggregate state implements JsonSchemaProvider (ImmutableRecord implements it by default, can be overridden)
  • Consider nullable properties
• Index definition can also be passed as optional parameter or DocumentIndexProvider is implemented
• JsonSchema is translated into GraphQL Schema to access aggregate state using GraphQL
• Auto Schema Versioning by creating a diff of old and new schema OR using a commit tag?

[codeliner]

Not needed anymore because aggregate state projections are also document projections and document query schema can be defined per aggregate.