Order Data Mapper Pattern

This example maps an OrderAggregate domain model to an OrderRow persistence record and back again, then stores the row through the Repository pattern.

What It Demonstrates

• fluent DataMapper<OrderAggregate,OrderRow> construction
• generated mapper factory with [GenerateDataMapper]
• validation errors for invalid domain/data inputs
• repository integration after mapping
• IServiceCollection import through AddOrderDataMapperDemo()

Import

var services = new ServiceCollection();
services.AddOrderDataMapperDemo();

using var provider = services.BuildServiceProvider(validateScopes: true);
var workflow = provider.GetRequiredService<OrderDataMapperWorkflow>();
var summary = await workflow.RunAsync();

The workflow uses IDataMapper<OrderAggregate,OrderRow> so applications can replace the mapper with the generated factory, an audited fluent mapper, or a test double.

Source

• src/PatternKit.Examples/DataMapperDemo/OrderDataMapperDemo.cs
• test/PatternKit.Examples.Tests/DataMapperDemo/OrderDataMapperDemoTests.cs