/*根据接收者id查询*/
public List<Message> message_list_by_receiver_id(int receiver_id) {
List<Message> message_list = messageDao.message_list_by_receiver_id(receiver_id);
if (message_list == null) {
message_list = new ArrayList<Message>();
}
return message_list;
}
/*根据发送者查询私信集合*/
public List<Message> message_list_by_sender_id(int sender_id) {
List<Message> message_list = messageDao.message_list_by_sender_id(sender_id);
if (message_list == null) {
message_list = new ArrayList<Message>();
}
return message_list;
}
/*根据私信的id查找私信*/
public Message message_get_by_message_id(int message_id) {
Message message = messageDao.message_get_by_message_id(message_id);
if (message.getMessage_id() != -1) {
return message;
} else {
return null;
}
}
/*该方法用于私信的创建*/
public boolean create_message(int sender, int receiver, String content) {
Timestamp time = new Timestamp(System.currentTimeMillis());
Message message = new Message(0, sender, receiver, content, time, false);
return messageDao.message_create(message);
}
/*将某一条私信的状态变为已读*/
public void change_message_status(int message_id) {
messageDao.message_change_status(message_id);
}
public MessageBiz() {
messageDao = MessageDao.getInstance();
}