decorator.java

说明DAO是如何使用的。带源码说明。

import Component;
/**
 * Maintains the reference to a Component object and defines an
 * interface that conforms to Component's interface
 * @role __Decorator
 */

public abstract class Decorator extends Component {

	/**
	 * reference to the decorated component
	 */
	protected Component component;

	public Decorator(Component component) {
		this.component = component;
	}

	public void doSomething() {
		component.doSomething();
	}
}