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A IOC container as simple and pragmatic as it can get with programmatic configuration through a Fluent API.

There is a newer version: 1.2.6

package org.mentacontainer.impl;

import java.lang.reflect.Method;

import org.mentacontainer.Factory;
import org.mentacontainer.Interceptor;
import org.mentacontainer.util.FindMethod;

public class GenericFactory implements Factory, Interceptor {
	
	private final Object factory;
	
	private final Method method;
	
	private final Class type;
	
	private Interceptor interceptor = null;
	
	public GenericFactory(Object factory, String methodName) {
		
		this.factory = factory;
		
		try {
		
			this.method = FindMethod.getMethod(factory.getClass(), methodName, new Class[] { });
			
			this.method.setAccessible(true);
			
			this.type = method.getReturnType();
			
		} catch(Exception e) {
			
			throw new RuntimeException(e);
		}
	}
	
	public void setInterceptor(Interceptor interceptor) {
		
		this.interceptor = interceptor;
	}
	
	@Override
	public void onCreated(E createdObject) {
		if (interceptor != null) {
			interceptor.onCreated(createdObject);
		}
	}
	
	@Override
	public void onCleared(E clearedObject) {
		if (interceptor != null) {
			interceptor.onCleared(clearedObject);
		}
	}
	
	@Override
	public  T getInstance()  {
		
		try {
			
			return (T) method.invoke(factory, (Object[]) null);
			
		} catch(Exception e) {
			
			throw new RuntimeException("Cannot invoke method: " + method, e);
			
		} 
	}
	
	@Override
	public Class getType() {
		return type;
	}
}