package com.ebookstore.service;

import com.ebookstore.service.impl.EBookStoreImpl;

/** 通過單例模式來創建管理整個系統的對象 */
public class EBookStoreFactory {
	/** 設置為私有類型,不允許外部類實例化 */
	private EBookStoreFactory() {
	}

	/** 定義為靜態類型 */
	private static EBookStoreFacade eBookStoreFacade;

	/** 獲得該實例 */
	public static EBookStoreFacade getInstance() {
		if (eBookStoreFacade == null)
			eBookStoreFacade = new EBookStoreImpl();
		return eBookStoreFacade;
	}
}