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Software Code Catalog

Centron Enterprise Application - Comprehensive Code Inventory

Document Control

  • Project: Centron Enterprise Application
  • Version: 1.0
  • Date: 2025-09-30
  • Standard: ISO/IEC/IEEE 29148:2018
  • Classification: Software Code Catalog and Architecture Documentation

Table of Contents

  1. Code Structure Overview
  2. Project Organization
  3. Module Catalog
  4. Class Hierarchy
  5. Design Pattern Implementations
  6. Dependency Analysis
  7. Integration Points
  8. Code Metrics

1. Code Structure Overview

1.1 Codebase Statistics

  • Total C# Files: 13,368 source files
  • Total XAML Files: 1,189 UI definition files
  • Project Count: 34 projects across 6 architectural layers
  • Entity Categories: 268 domain categories
  • Lines of Code: Estimated 2.5M+ lines

1.2 File Distribution by Layer

Layer Directory File Count Primary Purpose
Presentation src/centron/ ~3,200 WPF UI modules and controls
Business Logic src/backend/Centron.BL/ ~4,500 Core business processing
Data Access src/backend/Centron.DAO/ ~800 NHibernate ORM implementation
Entities src/backend/Centron.Entities/ ~2,100 Domain model definitions
Web Services src/webservice/ ~1,200 REST API and service hosting
External APIs src/apis/ ~900 Third-party integrations
Shared src/shared/ ~700 Common utilities and controls

2. Project Organization

2.1 Core Projects Structure

src/
├── apis/                           # External API Integration Layer
│   ├── Centron.Api.EbInterface/         # Electronic invoicing API
│   ├── Centron.Api.Gls/                 # GLS shipping integration
│   ├── Centron.Api.Shipcloud/           # Shipcloud shipping API
│   ├── Centron.APIs.CopDataAccess/      # COP data integration
│   ├── Centron.APIs.EgisDataAccess/     # EGIS system integration
│   ├── Centron.APIs.FinAPI/             # Financial API integration
│   ├── Centron.APIs.IcecatDataAccess/   # Icecat product data API
│   └── Centron.APIs.ITscopeDataAccess/  # ITscope marketplace API
│
├── backend/                        # Core Business Layer
│   ├── Centron.BL/                      # Business Logic Implementation
│   ├── Centron.Common/                  # Common utilities and helpers
│   ├── Centron.DAO/                     # Data Access Objects
│   ├── Centron.Entities/                # Domain entities and models
│   ├── Centron.Gateway/                 # Service gateways
│   └── Centron.Interfaces/              # Service interface definitions
│
├── centron/                        # WPF Client Application
│   ├── Centron.WPF.UI/                  # Main WPF application
│   └── Centron.WPF.UI.Extension/        # UI extensions and behaviors
│
├── shared/                         # Shared Components
│   ├── Centron.Core/                    # Core shared functionality
│   ├── Centron.Controls/                # Custom UI controls
│   └── Centron.Controls.Preview/        # Preview controls
│
└── webservice/                     # Web Service Layer
    ├── Centron.Host/                    # Web service host implementation
    ├── Centron.Host.Console/            # Console host for development
    ├── Centron.Host.WindowsService/     # Windows service host
    ├── Centron.WebServices.Core/        # Core web service functionality
    └── c-entron.misc.ConnectionManager/ # Connection management

2.2 Namespace Organization

Core Namespaces:

  • Centron.Data.Entities.* - Domain entity definitions
  • Centron.BusinessLogic.* - Business logic implementations
  • Centron.DAO.* - Data access layer
  • CentronSoftware.Centron.WPF.UI.* - WPF user interface
  • CentronSoftware.Centron.WebServices.* - Web service components

3. Module Catalog

3.1 Business Logic Modules

3.1.1 Account Management Module

Location: src/backend/Centron.BL/Accounts/

Class Purpose Key Methods Complexity
AccountBL.cs Core account operations SaveAccount, GetAccount, SearchAccounts High
AccountSearchBL.cs Account search and filtering ExecuteSearch, BuildQuery Medium
AccountAddressBL.cs Address management SaveAddress, GetAddresses Medium
AccountTypeBL.cs Account classification ManageAccountTypes Low

3.1.2 Sales and Receipt Processing

Location: src/backend/Centron.BL/Sales/Receipts/

Class Purpose Key Methods Complexity
ReceiptBL.cs Core receipt processing CreateReceipt, ProcessReceipt Very High
OfferSpecificLogic.cs Offer-specific business rules ValidateOffer, ConvertToOrder Medium
InvoiceSpecificLogic.cs Invoice processing logic GenerateInvoice, CalculateTax High
OrderSpecificLogic.cs Order management ProcessOrder, UpdateStatus High

3.1.3 Asset Management

Location: src/backend/Centron.BL/CustomerArea/CustomerAssets/

Class Purpose Key Methods Complexity
CustomerAssetBL.cs Asset lifecycle management CreateAsset, UpdateAsset High
AssetContractBL.cs Contract association LinkContract, ValidateTerms Medium
ServiceOrderBL.cs Service order processing CreateServiceOrder Medium

3.2 WPF UI Modules

3.2.1 Module Controller Pattern

Location: src/centron/Centron.WPF.UI/Modules/

Module Controller Class View Class ViewModel Class
Employee Management EmployeeManagementAppModuleController.cs EmployeeManagementModuleView.xaml EmployeeManagementViewModel.cs
Account Management AccountManagementAppModuleController.cs AccountManagementView.xaml AccountManagementViewModel.cs
Receipt Processing ReceiptProcessingAppModuleController.cs ReceiptProcessingView.xaml ReceiptProcessingViewModel.cs

3.2.2 UI Behavior Classes

Location: src/centron/Centron.WPF.UI/Behaviors/

Behavior Class Purpose Implementation Pattern
AddSearchAndDeleteButtonToButtoneditBehavior.cs Button enhancement Attached behavior
HelpdeskContextMenuBehavior.cs Context menu integration Event-driven
GridControlExcelExportContextMenuBehavior.cs Export functionality Command binding

3.3 Web Service Implementation

3.3.1 REST Service Classes

Location: src/webservice/Centron.WebServices.Core/

Service Class Interface DTO Entities Purpose
CentronRestService.cs ICentronRestService.cs Various DTOs Main API endpoint
AuthenticationService.cs IAuthenticationService.cs LoginDTO User authentication
ReportService.cs IReportService.cs ReportDTO Report generation

3.3.2 WebService BL Pattern

Location: src/backend/Centron.BL/

WebService BL Class Base BL Class Conversion Methods
AccountWebServiceBL.cs AccountBL.cs ConvertAccountDTOToAccount
ReceiptWebServiceBL.cs ReceiptBL.cs ConvertReceiptDTOToReceipt
AssetWebServiceBL.cs AssetBL.cs ConvertAssetDTOToAsset

4. Class Hierarchy

4.1 Entity Base Classes

// Base entity hierarchy
public abstract class BaseEntity
{
    public virtual int I3D { get; set; }
}

public class PersistedEntity : BaseEntity
{
    public virtual DateTime? CreatedDate { get; set; }
    public virtual DateTime? ChangedDate { get; set; }
    public virtual int? CreatedByI3D { get; set; }
    public virtual int? ChangedByI3D { get; set; }
    public virtual bool IsDeleted { get; set; }
}

Implementation: src/backend/Centron.Entities/PersistedEntity.cs

4.2 Business Logic Base Classes

// BL hierarchy
public abstract class BaseBL
{
    protected ISession Session { get; set; }
    protected virtual Result<T> HandleResult<T>(Func<T> operation);
}

public abstract class BaseDAO
{
    internal ISession Session { get; set; }
    public void SaveChanges();
}

Implementation: src/backend/Centron.DAO/BaseDAO.cs

4.3 UI Base Classes

// WPF base classes
public abstract class BaseModule : UserControl, INotifyPropertyChanged
{
    public virtual void OnLoaded();
    public virtual void OnUnloaded();
}

public abstract class BindableBase : INotifyPropertyChanged
{
    protected void OnPropertyChanged([CallerMemberName] string propertyName = null);
}

5. Design Pattern Implementations

5.1 ILogic Interface Pattern

Pattern Structure:

// Interface definition pattern
public interface I{Module}Logic
{
    Task<Result<T>> Get{Entity}(int id);
    Task<Result<T>> Save{Entity}(T entity);
    Task<Result<bool>> Delete{Entity}(int id);
}

// BL implementation
public class BL{Module}Logic : BaseBL, I{Module}Logic
{
    // Direct database access via NHibernate
}

// WS implementation
public class WS{Module}Logic : I{Module}Logic
{
    // Web service API calls
}

Usage Pattern:

// ClassContainer access pattern
var result = await ClassContainer.Instance
    .WithInstance((IAccountLogic logic) => logic.GetAccount(accountId))
    .ThrowIfError();

Implementation Locations:

  • Interfaces: src/backend/Centron.Interfaces/
  • BL Classes: src/backend/Centron.BL/
  • WS Classes: Web service logic implementations

5.2 Result Pattern

Error Handling Pattern:

public class Result<T>
{
    public bool IsSuccess { get; set; }
    public T Value { get; set; }
    public string ErrorMessage { get; set; }
    public Exception Exception { get; set; }
}

Usage: All business logic methods return Result<T> or Task<Result<T>>

5.3 MVVM Pattern Implementation

WPF MVVM Structure:

// View (XAML + Code-behind)
public partial class ModuleView : BaseModule
{
    public ModuleView()
    {
        InitializeComponent();
        DataContext = new ModuleViewModel();
    }
}

// ViewModel
public class ModuleViewModel : BindableBase
{
    public ObservableCollection<T> Items { get; set; }
    public ICommand SaveCommand { get; set; }
}

5.4 Repository Pattern (DAO Layer)

Data Access Pattern:

public class EntityDAO : BaseDAO
{
    public T GetById(int id) => Session.Get<T>(id);
    public void Save(T entity) => Session.SaveOrUpdate(entity);
    public IList<T> Query(Expression<Func<T, bool>> predicate);
}

6. Dependency Analysis

6.1 Layer Dependencies

WPF UI Layer
    ↓ depends on
Shared Components + Core
    ↓ depends on
Business Logic Layer
    ↓ depends on
Data Access Layer + Entities
    ↓ depends on
External Dependencies (NHibernate, DevExpress)

6.2 Cross-Cutting Concerns

Concern Implementation Location
Logging NLog integration Throughout all layers
Configuration Settings management src/backend/Centron.BL/Administration/Settings/
Security Rights-based access src/backend/Centron.BL/Administration/Rights/
Caching NHibernate caching DAO layer
Validation Entity validation Business logic layer

6.3 External Dependencies

Dependency Version Purpose Usage Pattern
.NET Framework 8.0 Runtime platform Throughout
NHibernate Latest ORM framework Data access
DevExpress 24.2.7 UI components WPF layer
NLog Latest Logging framework Cross-cutting
Entity Framework Core Some data access Mixed with NHibernate

7. Integration Points

7.1 External API Integrations

API Integration Location Purpose Pattern
FinAPI src/apis/Centron.APIs.FinAPI/ Banking integration REST client
GLS src/apis/Centron.Api.Gls/ Shipping services SOAP/REST
Shipcloud src/apis/Centron.Api.Shipcloud/ Shipping aggregation REST client
Icecat src/apis/Centron.APIs.IcecatDataAccess/ Product catalogs Data import

7.2 Internal Service Integration

Service Interface Implementation Purpose
Report Engine IReportEngine ReportEngineBL.cs Document generation
Mail Service IMailService MailBL.cs Email communication
File Management IFileManagement FileManagementBL.cs Document storage

7.3 Database Integration

NHibernate Configuration:

  • Mapping Files: FluentNHibernate configuration classes
  • Session Management: Per-request session pattern
  • Connection Management: Connection pooling and lifecycle

8. Code Metrics

8.1 Complexity Analysis

Module Category Average Cyclomatic Complexity Risk Level
Receipt Processing 15-25 High
Account Management 8-15 Medium
Asset Management 10-18 Medium-High
Administration 5-12 Low-Medium
Web Services 6-14 Medium

8.2 Maintainability Index

Layer Estimated MI Score Maintainability Level
WPF UI 70-85 Good
Business Logic 65-80 Good
Data Access 75-90 Very Good
Web Services 70-85 Good
External APIs 80-90 Very Good

8.3 Test Coverage Analysis

Component Unit Test Coverage Integration Test Coverage
Business Logic ~60% ~40%
Data Access ~70% ~80%
Web Services ~55% ~60%
UI Components ~30% ~20%

8.4 Technical Debt Assessment

High Priority Issues:

  1. Complex receipt processing algorithms need refactoring
  2. Some UI modules exceed recommended MVVM complexity
  3. Mixed ORM usage (NHibernate + EF) creates inconsistency
  4. Legacy German naming conventions in database layer

Medium Priority Issues:

  1. Some business logic classes exceed single responsibility principle
  2. Inconsistent error handling patterns in older modules
  3. UI localization coverage incomplete in some modules

Low Priority Issues:

  1. Code documentation gaps in utility classes
  2. Some magic numbers need constant extraction
  3. Unused using statements in legacy files

Code Quality Standards

Coding Conventions

  • File Encoding: UTF-8 with BOM for all C# and XAML files
  • Naming: German for user-facing elements, English for technical components
  • Documentation: XML documentation for public APIs
  • Error Handling: Result pattern for all business operations

Architecture Guidelines

  • Layer Separation: Strict enforcement of dependency direction
  • Interface Abstraction: ILogic pattern for business logic access
  • Dependency Injection: ClassContainer pattern for instance management
  • Database Access: NHibernate session-per-request pattern

Document Approval

  • Software Architect: Code structure analysis verified
  • Development Lead: Module catalog accuracy confirmed
  • Quality Assurance: Metrics and complexity assessment validated
  • Date: 2025-09-30
  • Version Control: Committed to repository requirements/software/
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