DKNet.Svc.Transformation 9.0.1

DKNet.Services.Transformation

A .NET transformation engine for complex data processing scenarios.

Project Overview

The DKNet.Services.Transformation project provides a robust framework for:

• Data format conversion (currency, date-time, boolean)
• Token extraction and resolution patterns
• Dynamic template processing
• Type-safe transformation pipelines

Key features: ✅ Chainable transformation workflows
✅ Extensible converter architecture
✅ Comprehensive error handling
✅ Test coverage over 90%

Directory Structure

Services/DKNet.Services.Transformation/
├── Converters/
│   ├── ValueFormatter.cs          # Core conversion logic
│   └── CurrencyConverter.cs       # Specific currency handling
├── TokenHandlers/
│   ├── TokenExtractor.cs          # Pattern-based token extraction
│   ├── TokenResolver.cs           # Data source integration
│   └── TokenResultValidator.cs    # Validation pipelines
└── Services.Transform.Tests/      # xUnit test suite
    ├── ConversionTests/
    └── TokenHandlingTests/

Key Components

Core Converters

ValueFormatter (Converters/ValueFormatter.cs)

// Format numeric value with culture-specific rules
var formatted = new ValueFormatter().Format(
    value: 12345.67m, 
    format: "C", 
    culture: CultureInfo.CreateSpecificCulture("en-US")
);
// Returns "$12,345.67"

CurrencyConverter (Converters/CurrencyConverter.cs)

// Handle currency conversions with automatic rounding
var converter = new CurrencyConverter();
var result = converter.Convert(135.99m, "JPY", 2);
// Returns ¥136 (using banker's rounding)

Token Handling System

TokenExtractor (TokenHandlers/TokenExtractor.cs)

// Extract tokens with format validation
var extractor = new TokenExtractor(
    pattern: @"\{(?<token>[a-zA-Z0-9_.:-]+)\}"
);
var tokens = extractor.Extract("Order #{order.id}: {item.price:USD}");
// Returns ["order.id", "item.price:USD"]

TokenResolver (TokenHandlers/TokenResolver.cs)

// Resolve tokens from data source
var resolver = new TokenResolver(new Dictionary<string, object> {
    {"user.email", "test@example.com"},
    {"transaction.date", DateTime.Now}
});
var resolved = resolver.Resolve("{user.email}");
// Returns "test@example.com"

TokenResultValidator (TokenHandlers/TokenResultValidator.cs)

// Validate token syntax and availability
var validator = new TokenResultValidator();
var validationResult = validator.Validate(
    new TokenResult("user.profile.age"),
    new ValidationContext { MaxDepth = 3 }
);
// Returns IsValid=true when token structure is valid

Getting Started

Requirements

• .NET 6 SDK
• NuGet package manager

Installation

dotnet add package DKNet.Services.Transformation

Test categories:

• Unit Tests: Isolated component validation
• Integration Tests: End-to-end transformation workflows
• Performance Tests: Benchmark critical paths

Contribution Guidelines

1. Fork the repository
2. Create feature branch (git checkout -b feature/improvement)
3. Add tests for new functionality
4. Submit PR with:
   • Description of changes
   • Updated documentation
   • Evidence of passing tests

⚠️ All contributions must maintain 100% test coverage on modified code.

Documentation version: 2.2 | Last updated: 2025-02-05