/**
* 根据id删除 当前账号的登陆集中的SessionUser
*
* @param id SessionUser id
*/
public void deleteUser(int id) {
LinkedList<SessionUser> users = sessionUserCollection.getUsers();
Iterator<SessionUser> iterator = users.iterator();
SessionUser sessionUser;
while (iterator.hasNext()) {
sessionUser = iterator.next();
if (id == sessionUser.getId()) {
iterator.remove();
sessionUserCollection.decrementTotal();
}
}
}
/** 向当前账号的登陆集添加一个SessionUser */
public void addUser() {
SessionUser user = new SessionUser();
user.setExpire(expire);
LinkedList<SessionUser> users = sessionUserCollection.getUsers();
sessionUserCollection.incrementTotal();
if (users.size() == 0) {
user.setId(sessionUserCollection.getTotal());
} else {
user.setId(users.getLast().getId() + 1);
}
users.add(user);
}
/**
* 获取当前未过期的登陆数，同时删除已过期的登陆
*
* @return 当前未过期的登录数
*/
public int getAliveSessions() {
LinkedList<SessionUser> users = sessionUserCollection.getUsers();
if (users.size() == 0) {
return 0;
}
Iterator<SessionUser> iterator = users.iterator();
SessionUser user;
while (iterator.hasNext()) {
user = iterator.next();
if (isUserExpired(user)) {
iterator.remove();
sessionUserCollection.decrementTotal();
}
}
return sessionUserCollection.getTotal();
}
/**
* 根据id获取当前账号登陆集的 登陆session
*
* @param id 某个SessionUser的id
* @return SessionUser
*/
public SessionUser getUser(int id) {
LinkedList<SessionUser> users = sessionUserCollection.getUsers();
for (SessionUser user : users) {
if (id == user.getId()) {
return user;
}
}
return null;
}
/**
* 某个用户是否过期，(id,createTime) 才能唯一标示一个用户
*
* @param id sessionUser id
* @param createTime SessionUser 创建时间
* @return 过期返回true,未过期返回false
*/
public boolean isUserExpired(int id, Date createTime) {
LinkedList<SessionUser> users = sessionUserCollection.getUsers();
for (SessionUser user : users) {
if (user.getId() == id && user.getCreateTime().getTime() == createTime.getTime()) {
return isUserExpired(user);
}
}
return true;
}
/**
* 获取当前账号的登陆集中的SessionUser 的属性
*
* @param id SessionUser id
* @param key 属性 key
* @return 属性 value
*/
public Object getProperty(int id, String key) {
LinkedList<SessionUser> users = sessionUserCollection.getUsers();
for (SessionUser user : users) {
if (id == user.getId()) {
return user.getProperties().get(key);
}
}
return null;
}
/**
* 给当前账号的登陆集中的 SessionUser 添加属性
*
* @param id SessionUser id
* @param key 属性 key
* @param object 属性 value
* @return 是否添加成功，无此id返回false
*/
public boolean addProperty(int id, String key, Object object) {
LinkedList<SessionUser> users = sessionUserCollection.getUsers();
Iterator<SessionUser> iterator = users.iterator();
SessionUser sessionUser;
while (iterator.hasNext()) {
sessionUser = iterator.next();
if (id == sessionUser.getId()) {
sessionUser.getProperties().put(key, object);
return true;
}
}
return false;
}
/**
* 只传入expire,则新建一个SessionCollection和第一个SessionUser
*
* @param expire 过期时间
*/
public SessionUserCollectionHelper(long expire) {
this.sessionUserCollection = new SessionUserCollection();
sessionUserCollection.setTotal(0);
this.expire = expire;
addUser();
}
/** 删除当前账号的登陆集的最后一个SessionUser */
public void deleteLastUser() {
LinkedList<SessionUser> users = sessionUserCollection.getUsers();
users.removeLast();
sessionUserCollection.decrementTotal();
}
/**
* 返回前账号登陆集中最后一个登陆的sessionUser
*
* @return SessionUser
*/
public SessionUser getLastUser() {
LinkedList<SessionUser> users = sessionUserCollection.getUsers();
return users.getLast();
}