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/**
 * The MIT License
 *
 * Copyright (C) 2015 Asterios Raptis
 *
 * Permission is hereby granted, free of charge, to any person obtaining
 * a copy of this software and associated documentation files (the
 * "Software"), to deal in the Software without restriction, including
 * without limitation the rights to use, copy, modify, merge, publish,
 * distribute, sublicense, and/or sell copies of the Software, and to
 * permit persons to whom the Software is furnished to do so, subject to
 * the following conditions:
 *
 * The above copyright notice and this permission notice shall be
 * included in all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
 */
package io.github.astrapi69.spring.autowire;

import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

/**
 * Utility class for autowire classes like in jpa listeners
 */
@Component
public final class AutowireAware implements ApplicationContextAware
{

	private static ApplicationContext applicationContext;

	private AutowireAware()
	{
	}

	/**
	 * Try to autowire the given object that contains the bean instances which need to be autowired
	 *
	 * @param classHolderToAutowire
	 *            the holder instance of the class which holds @Autowire annotations
	 * @param beansToAutowireInClass
	 *            the beans which have the @Autowire annotation in the specified
	 *            {#classHolderToAutowire}
	 */
	public static void autowire(Object classHolderToAutowire, Object... beansToAutowireInClass)
	{
		for (Object bean : beansToAutowireInClass)
		{
			if (bean == null)
			{
				applicationContext.getAutowireCapableBeanFactory()
					.autowireBean(classHolderToAutowire);
			}
		}
	}

	@Override
	public void setApplicationContext(final ApplicationContext applicationContext)
	{
		AutowireAware.applicationContext = applicationContext;
	}

}