Interface IKeyBuilder<TEvent, TBuilder>
- Namespace
- Cratis.Chronicle.Projections
- Assembly
- Cratis.Chronicle.dll
Defines a builder for keys.
public interface IKeyBuilder<TEvent, TBuilder>Type Parameters
TEventEvent to build for.
TBuilderType of actual builder.
Methods
UsingCompositeKey<TKeyType>(Action<ICompositeKeyBuilder<TKeyType, TEvent>>)
Define what key to use based on a composite of expressions.
TBuilder UsingCompositeKey<TKeyType>(Action<ICompositeKeyBuilder<TKeyType, TEvent>> builderCallback)Parameters
builderCallbackAction<ICompositeKeyBuilder<TKeyType, TEvent>>Builder callback for building the composite key.
Returns
- TBuilder
Builder continuation.
Type Parameters
TKeyTypeType of key.
UsingKeyFromContext<TProperty>(Expression<Func<EventContext, TProperty>>)
Define what key to use based on a value in the EventContext.
TBuilder UsingKeyFromContext<TProperty>(Expression<Func<EventContext, TProperty>> keyAccessor)Parameters
keyAccessorExpression<Func<EventContext, TProperty>>Accessor for the property within EventContext to use.
Returns
- TBuilder
Builder continuation.
Type Parameters
TPropertyType of the property.
UsingKey<TProperty>(Expression<Func<TEvent, TProperty>>)
Define what key to use. This is optional, if not set - it will default to using the event source identifier on the event.
TBuilder UsingKey<TProperty>(Expression<Func<TEvent, TProperty>> keyAccessor)Parameters
keyAccessorExpression<Func<TEvent, TProperty>>Accessor for the property to use.
Returns
- TBuilder
Builder continuation.
Type Parameters
TPropertyType of the property.