https://github.com/flutter-news-app-full-source-code/data-repository

A generic repository that serves as a crucial abstraction layer within the Flutter News App Full Source Code Toolkit.
https://github.com/flutter-news-app-full-source-code/data-repository

Last synced: 4 months ago
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A generic repository that serves as a crucial abstraction layer within the Flutter News App Full Source Code Toolkit.

• Host: GitHub
• URL: https://github.com/flutter-news-app-full-source-code/data-repository
• Owner: flutter-news-app-full-source-code
• License: other
• Created: 2025-04-26T07:44:42.000Z (about 1 year ago)
• Default Branch: main
• Last Pushed: 2026-02-03T10:56:04.000Z (4 months ago)
• Last Synced: 2026-02-08T08:55:28.218Z (4 months ago)
• Language: Dart
• Homepage:
• Size: 88.9 KB
• Stars: 0
• Watchers: 0
• Forks: 0
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG
  • License: LICENSE

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README

          


  

  
Data Repository

  
A generic repository that serves as a crucial abstraction layer within the Flutter News App Full Source Code Toolkit.





  

  

  



This `data_repository` package serves as a crucial abstraction layer within the [**Flutter News App Full Source Code Toolkit**](https://github.com/flutter-news-app-full-source-code). It provides a generic, type-safe interface for interacting with data sources, decoupling business logic from the underlying data client implementations. By mirroring the data access methods of a `DataClient`, it ensures consistency and simplifies data operations across the Flutter mobile app, web dashboard, and Dart Frog backend API.

## ⭐ Feature Showcase: Robust Data Access & Management

This package offers a comprehensive set of features for managing data entities.

🧱 Core Functionality

### 🚀 Generic Data Operations

- **`DataRepository`:** A generic class that provides a consistent interface for CRUD (Create, Read, Update, Delete) operations, querying, counting, and aggregation for any data type `T`.

- **Abstraction over `DataClient`:** Hides the complexities of `DataClient` implementations and `SuccessApiResponse` structures, offering a clean, business-logic-focused API.

### 🔐 User Scoping & Permissions

- **Optional `userId` Parameter:** All data access methods support an optional `userId` parameter, enabling seamless management of both user-specific and global resources.

### 🔍 Advanced Querying

- **`readAll` Method:** A powerful method that returns a `Future>`, supporting rich filtering, multi-field sorting, and cursor-based pagination, compatible with modern NoSQL database capabilities.

- **`count` and `aggregate`:** Efficient methods for counting documents and executing complex data aggregation pipelines directly on the data source.

### 🔄 Reactive Updates

- **`entityUpdated` Stream:** A broadcast stream that emits the `Type` of a data entity whenever a Create, Update, or Delete operation is successfully completed. This allows other parts of the application to react to data changes in real-time, facilitating dynamic UI updates and side effects.

### 🛡️ Robust Error Handling

- **Exception Propagation:** Catches and re-throws standardized exceptions (like `HttpException` subtypes or `FormatException`) from the underlying data client layer. This ensures predictable error handling and allows higher layers (e.g., BLoCs, API route handlers) to implement specific error recovery logic.

### 💉 Dependency Injection Ready

- **Constructor Injection:** Designed to receive an `DataClient` instance via its constructor, promoting loose coupling and testability.

> **💡 Your Advantage:** You get a meticulously designed, production-quality data access layer that simplifies interactions with your data sources, ensures consistency, and provides robust error handling and reactive capabilities. This package accelerates development by providing a solid foundation for data management.

## 🔑 Licensing

This source code is licensed for commercial use and is provided for local evaluation. A **Lifetime Commercial License** is required for any production or public-facing application.

Please visit the main [Flutter News App Full Source Code Toolkit](https://github.com/flutter-news-app-full-source-code) organization page to review the full license terms and to purchase.