Class MetadataFactory

Namespace

Savvyio

Assembly

Savvyio.Core.dll

Provides access to factory methods for maintaining metadata in models.

public static class MetadataFactory

Inheritance

object

MetadataFactory

Examples

This example shows how to persist a custom metadata value on a request and retrieve it later in the pipeline.

using Savvyio;

namespace ExampleApp;

public sealed class MetadataFactoryExample
{
    public string GetTenant()
    {
        var command = new CreateOrderCommand("ORD-42");
        MetadataFactory.Set(command, "tenant", "eu-west");
        return (string)MetadataFactory.Get(command, "tenant");
    }
}

public sealed record CreateOrderCommand(string OrderId) : Request;

Methods

Get<T>(T, string)

Gets the value associates to the request from the item with the specified key.

public static object Get<T>(T request, string key) where T : IMetadata

Parameters

request T

The IMetadata to extend.

key string

The key of the element to retrieve.

Returns

object

A reference to the value in the request that is identified by key, if the entry exists; otherwise, null.

Type Parameters

T

The model that implements the IMetadata interface.

Set<T>(T, string, object)

Assigns a new value to the request on the item with the specified key.

public static T Set<T>(T request, string key, object value) where T : IMetadata

Parameters

request T

The IMetadata to extend.

key string

The key of the element to retrieve.

value object

The value of the element to change.

Returns

T

A reference to request after the operation has completed.

Type Parameters

T

The model that implements the IMetadata interface.

Exceptions

ArgumentNullException

request cannot be null -or- key cannot be null.