WireBox : Dependency Injection & AOP
7.x
7.x
  • Introduction
    • Contributing Guide
    • Release History
      • What's New With 7.2.0
      • What's New With 7.1.0
      • What's New With 7.0.0
    • Upgrading to WireBox 7
    • About This Book
      • Author
  • Getting Started
    • Overview
    • Installing WireBox
    • Getting Jiggy Wit It!
      • Instance Creations
      • Binder Introduction
      • Scoping
      • Eager Init
      • How WireBox Resolves Dependencies
    • Migrating From ColdSpring
  • Configuration
    • Configuring WireBox
      • Binder Configuration Properties
      • Binder Environment Properties
      • ColdBox Enhanced Binder
      • Types & Scopes
      • Data Configuration Settings
      • Programmatic Configuration
    • Mapping DSL
      • Mapping Initiators
      • Mapping Destinations
      • MapDirectory() Influence & Filters
      • Persistence DSL
      • Dependencies DSL
        • Mapping Extra Attributes
      • Mapping DSL Examples
      • Influence Instances at Runtime
      • Processing Mappings
    • Component Annotations
      • Persistence Annotations
      • CacheBox Annotations
    • Parent Object Definitions
  • Usage
    • WireBox Injector
      • Injector Constructor Arguments
      • Injection Idioms
      • Common Methods
    • Injection DSL
      • ColdBox Namespace
      • CacheBox Namespace
      • EntityService Namespace
      • Executor Namespace
      • Java Namespace
      • LogBox Namespace
      • Models Namespace
      • Provider Namespace
      • WireBox Namespace
    • WireBox Delegators
    • WireBox Event Model
      • WireBox Events
      • WireBox Listeners
        • ColdBox Mode Listener
        • Standalone Mode Listener
  • Advanced Topics
    • Child Injectors
    • Lazy Properties
    • Object Persistence & Thread Safety
    • ORM Entity Injection
    • Providers
      • Custom Providers
      • toProvider() closures
      • Virtual Provider Injection DSL
      • Virtual Provider Mapping
      • Virtual Provider Lookup Methods
      • Provider onMissingMethod Proxy
      • Scope Widening Injection
    • Property Observers
    • Runtime Mixins()
    • WireBox Object Populator
      • populateFromXML
      • populateFromQuery
      • populateFromStruct
      • populateFromQueryWithPrefix
      • populateFromJSON
    • Virtual Inheritance
  • Extending WireBox
    • Custom DSL
      • The DSL Builder Interface
      • Registering a Custom DSL
    • Custom Scopes
      • The Scope Interface
      • Scoping Process
      • Registering a Custom Scope
    • WireBox Injector Interface
  • Aspect Oriented Programming
    • AOP Intro
      • Overview
        • AOP Vocabulary
      • Activate The AOP Listener
      • Create Your Aspect
        • MethodInvocation Useful Methods
        • MethodLogger Aspect
      • Aspect Registration
      • Aspect Binding
      • Auto Aspect Binding
        • ClassMatcher Annotation DSL
        • MethodMatcher Annotation DSL
      • Included Aspects
        • CFTransaction
        • HibernateTransaction
        • MethodLogger
      • Summary
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  1. Extending WireBox

WireBox Injector Interface

We also provide an interface to create objects that adhere to our injector interface: wirebox.system.ioc.IInjector.

Please note that you DO NOT need to add the implements to your code. We actually highly suggest you don't. There are many issues with interfaces yet in multiple CFML engines. So we do runtime checks for it, instead at compile time.

Then these objects can be used as parent injectors, which are great for legacy factories or creating hierarchies according to your specs. All you have to do is implement the following interface:

/**
 * Copyright Since 2005 ColdBox Framework by Luis Majano and Ortus Solutions, Corp
 * www.ortussolutions.com
 * ---
 * An interface that enables any CFC to act like a parent injector within WireBox.
 **/
interface {

	/**
	 * Link a parent Injector with this injector and return itself
	 *
	 * @injector             A WireBox Injector to assign as a parent to this Injector
	 * @injector.doc_generic coldbox.system.ioc.Injector
	 *
	 * @return coldbox.system.ioc.IInjector
	 */
	function setParent( required injector );

	/**
	 * Get a reference to the parent injector instance, else an empty simple string meaning nothing is set
	 *
	 * @return coldbox.system.ioc.IInjector
	 */
	function getParent();

	/**
	 * Locates, Creates, Injects and Configures an object model instance
	 *
	 * @name          The mapping name or CFC instance path to try to build up
	 * @initArguments The constructor structure of arguments to passthrough when initializing the instance
	 * @dsl           The dsl string to use to retrieve the instance model object, mutually exclusive with 'name'
	 * @targetObject  The object requesting the dependency, usually only used by DSL lookups
	 * @injector      The child injector name to use when retrieving the instance
	 */
	function getInstance(
		name,
		struct initArguments = {},
		dsl,
		targetObject = "",
		injector
	);

	/**
	 * Checks if this injector can locate a model instance or not
	 *
	 * @name The object name or alias to search for if this container can locate it or has knowledge of it
	 */
	boolean function containsInstance( required name );

	/**
	 * Shutdown the injector gracefully by calling the shutdown events internally
	 *
	 * @return coldbox.system.ioc.IInjector
	 */
	function shutdown();

}

Once you create this CFC that implements this interface then you can call on the injector's setParent() method and you are ready to roll.

injector.setParent( myCustomInjector );
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Last updated 2 years ago

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