package org.wamblee.system;

public interface RequiredInterface {

	/**
	 * Name for the interface. 
	 */
	public String getName(); 
	
	/**
	 * Checks if the service is provided by a given provided interface. 
	 * @param aInterface Provided interface. 
	 * @return
	 */
	boolean implementedBy(ProvidedInterface aInterface);
	
	/**
	 * Sets the provider of this interface. 
	 * @param aProvider Provider. 
	 */
	void setProvider(ProvidedInterface aProvider);
	
	/**
	 * Getst the provider interface. 
	 * @return Provider or null if not set. 
	 */
	ProvidedInterface getProvider(); 
	
	/**
	 * Gets the implementation of the required interface. 
	 * @param <T>
	 * @param aClass Interface type. 
	 * @return Interface implementation or null if not known yet. 
	 */
	<T> T getImplementation(Class<T> aClass); 
}