fuzhengwei/small-spring
Small Spring
Small-Spring es una implementación simplificada en Java del framework Spring, diseñada para estudiar la arquitectura interna de los contenedores de inversión de control y los frameworks de inyección de dependencias. Funciona como un contenedor de beans que gestiona el ciclo de vida de los objetos y resuelve dependencias mediante la instanciación automatizada y la inyección de propiedades.
El proyecto implementa un mecanismo para interceptar llamadas a métodos mediante proxies dinámicos para soportar la programación orientada a aspectos. Separa las preocupaciones transversales de la lógica de negocio envolviendo objetos objetivo para modificar la ejecución de métodos.
El sistema cubre el descubrimiento de componentes mediante el escaneo del classpath y la carga de recursos externos, incluyendo el análisis de configuraciones XML. Incluye gestión del contexto de la aplicación, control del alcance de los beans y un sistema de despacho de eventos basado en el patrón observador para manejar eventos del sistema y hooks de ciclo de vida.
Features
- Dependency Injection Frameworks - Implements a full dependency injection framework that automatically manages object creation and resolves component dependencies.
- Dependency Injection - Implements a core dependency injection system to decouple software components through automated wiring.
- Java Component Containers - Functions as a Java component container that handles the creation and management of singleton and prototype scoped objects.
- Classpath Component Scanners - Provides automatic discovery and registration of managed beans by scanning the classpath for annotations.
- Annotation-Based Component Scanning - Automatically detects and registers classes as managed beans by scanning packages for annotations.
- Aspect-Oriented Programming - Implements techniques for modularizing cross-cutting concerns by intercepting method calls.
- Aspect-Oriented Programming Frameworks - Implements a system for modularizing cross-cutting concerns using dynamic proxies and interceptors.
- Object Lifecycle Management - Controls the creation, registration, and destruction of objects to decouple instantiation from usage.
- Inversion-of-Control Containers - Provides an inversion-of-control container that manages bean lifecycles and resolves dependencies through automated instantiation.
- Singleton Instance Sharing - Manages a central map of singleton instances to ensure shared object access across the dependency graph.
- Dependency Injection Population - Uses Java reflection and metadata to automatically populate object properties with their required dependencies.
- Method Interception Proxies - Uses dynamic proxies to intercept method calls, allowing the injection of custom behavior.
- Spring Bean Contexts - Coordinates resource loading and object recognition within a managed bean application context.
- External Configuration Loading - Provides mechanisms to load external configuration files for component discovery and registration.
- Hook Registration - Implements a registration mechanism for executing custom logic during object initialization and destruction.
- Framework Architecture Studies - Provides a simplified implementation of the Spring framework as a resource for studying IoC and DI internals.
- Framework Implementation Studies - Provides a simplified implementation of the Spring framework specifically designed for studying the internals of IoC and DI containers.
- Bean Scope Definitions - Defines how objects are instantiated and shared using scope definitions and factory patterns.
- Initialization and Shutdown Hooks - Provides initialization and shutdown hooks to trigger specific methods during the application lifecycle.
- Event Triggering - Implements mechanisms for programmatically firing events to notify registered listeners within the container.
- Container Event Observers - Implements an observer-pattern event dispatcher to notify listeners of internal system events.
- XML Configurations - Supports the use of external XML files to define object relationships and application settings.
- Java Frameworks - A simplified implementation of the Spring framework for learning.
