Interface IAddChildBuilder<TChildModel, TEvent>
- Namespace
- Cratis.Chronicle.Projections
- Assembly
- Cratis.Chronicle.dll
Defines a builder for building an add child operation, typically used in to a from expression.
public interface IAddChildBuilder<TChildModel, TEvent>Type Parameters
TChildModelChild read model type.
TEventType of event.
Methods
FromObject(Expression<Func<TEvent, TChildModel>>)
Describe an adding of a child from an object already on the event.
IAddChildBuilder<TChildModel, TEvent> FromObject(Expression<Func<TEvent, TChildModel>> propertyWithChild)Parameters
propertyWithChildExpression<Func<TEvent, TChildModel>>The property that holds object on the event.
Returns
- IAddChildBuilder<TChildModel, TEvent>
Parent builder for continuation.
IdentifiedBy<TProperty>(Expression<Func<TChildModel, TProperty>>)
Sets the property that identifies the child model in the collection within the parent.
IAddChildBuilder<TChildModel, TEvent> IdentifiedBy<TProperty>(Expression<Func<TChildModel, TProperty>> propertyExpression)Parameters
propertyExpressionExpression<Func<TChildModel, TProperty>>The expression that represents the property used to identify.
Returns
- IAddChildBuilder<TChildModel, TEvent>
Builder continuation.
Type Parameters
TPropertyType of property.
UsingKeyFromContext<TProperty>(Expression<Func<EventContext, TProperty>>)
Define what key to use based on a value in the EventContext.
IAddChildBuilder<TChildModel, TEvent> UsingKeyFromContext<TProperty>(Expression<Func<EventContext, TProperty>> keyAccessor)Parameters
keyAccessorExpression<Func<EventContext, TProperty>>Accessor for the property within EventContext to use.
Returns
- IAddChildBuilder<TChildModel, TEvent>
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.
IAddChildBuilder<TChildModel, TEvent> UsingKey<TProperty>(Expression<Func<TEvent, TProperty>> keyAccessor)Parameters
keyAccessorExpression<Func<TEvent, TProperty>>Accessor for the property to use.
Returns
- IAddChildBuilder<TChildModel, TEvent>
Builder continuation.
Type Parameters
TPropertyType of the property.
UsingParentCompositeKey<TKeyType>(Action<ICompositeKeyBuilder<TKeyType, TEvent>>)
Define what composite key based on properties on the event represents the parent key. This is typically used in child relationships to identify the parent read model to work with.
IAddChildBuilder<TChildModel, TEvent> UsingParentCompositeKey<TKeyType>(Action<ICompositeKeyBuilder<TKeyType, TEvent>> builderCallback)Parameters
builderCallbackAction<ICompositeKeyBuilder<TKeyType, TEvent>>Builder callback for building the composite key.
Returns
- IAddChildBuilder<TChildModel, TEvent>
Builder continuation.
Type Parameters
TKeyTypeType of key.
UsingParentKeyFromContext<TProperty>(Expression<Func<EventContext, TProperty>>)
Define what property on the event represents the parent key based on a property in the EventContext. This is typically used in child relationships to identify the parent read model to work with.
IAddChildBuilder<TChildModel, TEvent> UsingParentKeyFromContext<TProperty>(Expression<Func<EventContext, TProperty>> keyAccessor)Parameters
keyAccessorExpression<Func<EventContext, TProperty>>Accessor for the property to use.
Returns
- IAddChildBuilder<TChildModel, TEvent>
Builder continuation.
Type Parameters
TPropertyType of the property.
UsingParentKey<TProperty>(Expression<Func<TEvent, TProperty>>)
Define what property on the event represents the parent key. This is typically used in child relationships to identify the parent read model to work with.
IAddChildBuilder<TChildModel, TEvent> UsingParentKey<TProperty>(Expression<Func<TEvent, TProperty>> keyAccessor)Parameters
keyAccessorExpression<Func<TEvent, TProperty>>Accessor for the property to use.
Returns
- IAddChildBuilder<TChildModel, TEvent>
Builder continuation.
Type Parameters
TPropertyType of the property.