Class DefaultKeyForCommandResolver

Namespace

Cratis.Arc.Commands

Assembly

Cratis.Arc.Core.dll

Represents the ICanResolveKeyForCommand Arc ships: a command composes its key itself, or marks the property holding it.

[Singleton]
public class DefaultKeyForCommandResolver : ICanResolveKeyForCommand

Inheritance

object

DefaultKeyForCommandResolver

Implements

ICanResolveKeyForCommand

Inherited Members

object.GetType()

object.MemberwiseClone()

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

Extension Methods

MethodCalls.CallGenericMethod<TOut, T>(T, Expression<Func<T, Func<TOut>>>, params Type[])

MethodCalls.CallGenericMethod<TOut, T, T1>(T, Expression<Func<T, Func<T1, TOut>>>, T1, params Type[])

MethodCalls.CallGenericMethod<TOut, T, T1, T2>(T, Expression<Func<T, Func<T1, T2, TOut>>>, T1, T2, params Type[])

MethodCalls.CallGenericMethod<TOut, T, T1, T2, T3>(T, Expression<Func<T, Func<T1, T2, T3, TOut>>>, T1, T2, T3, params Type[])

ConverterExtensions.ConvertTo(object, Type)

ConceptExtensions.GetConceptValue(object)

ConceptExtensions.IsConcept(object)

JsonValueExtensions.ToJsonValue(object?)

ObservableExtensions.InvokeAndWrapWithSubject<TResult>(object, Func<CancellationToken, IObservable<TResult>>)

ObservableExtensions.InvokeAndWrapWithTransformSubject<TResult, TSource>(object, Func<CancellationToken, IObservable<TSource>>, Func<TSource, TResult>)

Remarks

Both rules are things the application says out loud. Nothing is inferred from the shape of a command — a command carrying two identifiers has no answer that is not a guess, and one that grows a second identifier later would silently stop resolving the read model injected somewhere else entirely.

Constructors

DefaultKeyForCommandResolver()

public DefaultKeyForCommandResolver()

Methods

Resolve(object)

Reads the key from a command.

public string? Resolve(object command)

Parameters

command object

The command to read.

Returns

string

The key, or null when this rule recognizes none on the command.