Class TracedDomainEventExtensions

Namespace

Savvyio.Domain.EventSourcing

Assembly

Savvyio.Domain.EventSourcing.dll

Extension methods for the ITracedDomainEvent interface.

public static class TracedDomainEventExtensions

Inheritance

object

TracedDomainEventExtensions

Examples

Use TracedDomainEventExtensions to set and read back the aggregate version and member type on a ITracedDomainEvent. Call SetAggregateVersion when recording the event and GetAggregateVersion when replaying the aggregate stream.

using System;
using Savvyio.Domain.EventSourcing;

namespace ExampleApp;

public sealed class TracedDomainEventExtensionsExample
{
    public (long Version, string MemberType) StampAndRead()
    {
        var e = new AccountStateCapturedEvent("ACC-42")
            .SetAggregateVersion(7);
        e.Metadata[Savvyio.MetadataDictionary.MemberType] = typeof(AccountStateCapturedEvent).FullName;

        long version = e.GetAggregateVersion<AccountStateCapturedEvent>();
        string memberType = e.GetMemberType<AccountStateCapturedEvent>();
        Console.WriteLine($"Version: {version}, MemberType: {memberType}");
        return (version, memberType);
    }
}

public sealed record AccountStateCapturedEvent(string AccountId) : Savvyio.Request, ITracedDomainEvent;

Methods

GetAggregateVersion<T>(T)

Gets the aggregate version from the request.

public static long GetAggregateVersion<T>(this T request) where T : ITracedDomainEvent

Parameters

request T

The ITracedDomainEvent to extend.

Returns

long

The version of the associated ITracedAggregateRoot<TKey>.

Type Parameters

T

The model that implements the ITracedDomainEvent interface.

GetMemberType<T>(T)

Gets the string representation of the type from the request.

public static string GetMemberType<T>(this T request) where T : ITracedDomainEvent

Parameters

request T

The ITracedDomainEvent to extend.

Returns

string

The string representation of the type from the request.

Type Parameters

T

The model that implements the ITracedDomainEvent interface.

SetAggregateVersion<T>(T, long)

Assigns a new version to the request.

public static T SetAggregateVersion<T>(this T request, long version) where T : ITracedDomainEvent

Parameters

request T

The ITracedDomainEvent to extend.

version long

The aggregate version of the model.

Returns

T

A reference to request after the operation has completed.

Type Parameters

T

The model that implements the ITracedDomainEvent interface.