databasemock.java

白广元写的java web整合开发完全自学手册的源代码

package tutorial;

import java.util.ArrayList;
import java.util.List;
public class DataBaseMock {
	private static List<User> data = new ArrayList<User>();
	private static int userid = 0;
	static {
		User user = new User();
		user.setUserid(new Integer(0));
		user.setUsername("admin");
		user.setPassword("admin");
		user.setFrom(1);// 北京
		user.setSex(1);// 男
		user.setAge(18);
		data.add(user);
	}
	public static User selectUser(String username,String password)
	{
		for (User u : data) {
			if (u.getUsername().equals(username)&&u.getPassword().equals(password)) {
				return u;
			}
		}
		return null;
	}
	public static List<User> selectAllUser()
	{
		return data;
	}
	public static int getNewUserId() {
		return ++userid;
	}
	public static void saveUser(User user) {
		data.add(user);
	}
	public static void updateUser(User user) {
		deleteUser(user);
		saveUser(user);
	}
	public static void deleteUser(User user) {
		for (User u : data) {
			if (u.getUserid().intValue() == user.getUserid().intValue()) {
				data.remove(u);
				break;
			}
		}
	}
	public static User getUser(Integer userid) {
		return data.get(userid);
	}
}