/*
 * Copyright 2005-2010 the original author or authors.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.wamblee.inject;

import java.util.ServiceLoader;


/**
 * This abstract base class performs injection at construction. Be sure not to
 * initialize fields of derived classes to null as these will override the
 * initializations of this base class.
 * 
 * Use this by subclassing through {@link #Injectable()).
 * 
 * To use this class, the {@link ServiceLoader} mechanism must be used to locate
 * a {@link InjectorFactory}. The first implementation that is found will be
 * used for injection.
 * 
 * @author Erik Brakkee
 */
public abstract class Injectable {

    private static final SimpleInjector INJECTOR = new SimpleInjector(
        InjectorFactoryBuilder.getInjectorFactory());

    /**
     * Inheritance style constructor.
     */
    protected Injectable() {
        INJECTOR.inject(this);
    }    
}