A .NET solution of lightweight, composable libraries for working with expression trees and specifications. It provides serializable equivalents of System.Linq.Expressions, abstractions for mapping and serialization, and an implementation of the Specification pattern.

Komair provides:

• Expressions — A .NET library providing serializable equivalents of the System.Linq.Expressions namespace (Komair.Expressions).
• Expression serialization — Abstractions and concrete implementations for serializing expression nodes (Komair.Expressions.Serialization, Komair.Expressions.Serialization.Json).
• Expression mapping — Abstractions and Mapster-based implementations for mapping between expression representations (Komair.Expressions.Mapping, Komair.Expressions.Mapping.Mapster).
• Specifications — A .NET implementation of the Specification pattern (Komair.Specifications).
• Specifications + EF Core — Optional IQueryable<T> helpers that compose specifications with Entity Framework Core (Komair.Specifications.EntityFrameworkCore).
• Validation bridge adapters — Optional adapters that project shared rules to FluentValidation and DataAnnotations (Komair.Specifications.Validation.*).

Package	NuGet	Description
Komair.Expressions		Serializable equivalents of System.Linq.Expressions.
Komair.Expressions.Serialization		Abstractions for serializing ExpressionNode objects.
Komair.Expressions.Serialization.Json		System.Text.Json implementation of expression serialization.
Komair.Expressions.Mapping		Abstractions for mapping ExpressionNode objects.
Komair.Expressions.Mapping.Mapster		Mapster-based implementation of expression mapping.
Komair.Specifications		Implementation of the Specification pattern.
Komair.Specifications.EntityFrameworkCore		Optional EF Core helpers for composing specifications with IQueryable<T>.
Komair.Specifications.Validation.Abstractions		Shared validation bridge rule and translation contracts.
Komair.Specifications.Validation.FluentValidation		FluentValidation adapter for shared validation bridge rules.
Komair.Specifications.Validation.DataAnnotations		DataAnnotations adapter with metadata fallback and diagnostics.

• Sample index: samples/validation-bridge-end-to-end.md
• AbstractValidator<T> integration example: samples/validation-bridge-fluentvalidator-class.md
• DataAnnotations class integration example: samples/validation-bridge-dataannotations-class.md

dotnet build
dotnet test