BindMediator.java

package org.ripple.power.ioc.injector;

/**
 * 
 * Copyright 2008
 * 
 * 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.
 * 
 * @project loonframework
 * @author chenpeng
 * @email：ceponline@yahoo.com.cn
 * @version 0.1
 */
public class BindMediator implements Start, InstanceEnabled {

	private Bind bind;
	private Object instance;
	private Container container;
	private boolean started;

	public BindMediator(Bind dependency, Container container) {

		this.bind = dependency;
		this.container = container;
	}

	public void start() {
		if (!started) {
			this.instance = this.bind.instance(this.container);
			this.started = true;
		}
	}

	public void stop() {
		this.instance = null;
		this.started = false;
	}

	public Object getInstance() {
		if (!started) {
			this.start();
		}
		return instance;
	}

	public Bind getBind() {
		return this.bind;
	}

}