package?com.wuzy.elts.entity;

import?java.io.BufferedInputStream;
import?java.io.BufferedReader;
import?java.io.FileInputStream;
import?java.io.IOException;
import?java.io.InputStreamReader;
import?java.io.Serializable;
import?java.util.ArrayList;
import?java.util.HashMap;
import?java.util.List;
import?java.util.Map;

import?com.wuzy.elts.util.Config;
/**
?*?實體數據訪問類
?*?是數據訪問層，負責將磁盤文件數據讀取到內存集合中
?*?當前類包含兩大功能：
?*?1）?用戶信息讀取，和查詢
?*?2）?題庫信息讀取，和查詢
?*/
public?class?EntityContext?implements?Serializable?{
??private?Config?config;
??
??public?EntityContext（Config?config）?{
????this.config?=?config;
????//UserFile?QuestionFile?是散列表的key，必須包含在
????//?配置文件中
????loadQuestions（config.getString（“QuestionFile“））;
??}
??
??/**?全部試題的集合?key是級別（level）?
???*?value是?對于level下的所有試題?線性集合?*/
??private?Map>?questions?=?
????new?HashMap>（）;

??public?List?findQuestions（int?level）{
????return?new?ArrayList（questions.get（level））;
??}
??
??/**?解析試題文件?到questions集合中?*/
??private?void?loadQuestions（String?file）{
????try?{
??????BufferedReader?in?=?
????????new?BufferedReader（
????????????new?InputStreamReader（
????????????????new?BufferedInputStream（
????????????????????new?FileInputStream（file））?
????????????????????“gbk“））;
??????String?str;
??????while（（str?=?in.readLine（））!=null）{
????????str?=?str.trim（）;
????????if（str.equals（““）?||?str.startsWith（“#“））{
??????????continue;
????????}
????????//解析流信息到?Question?對象?
????????Question?q?=?parseQuestion（str?
????????????in.readLine（）?
????????????in.readLine（）?
????????????in.readLine（）?
????????????in.readLine（）?
????????????in.readLine（））;
????????addQuestion（q）;?//添加到集合
??????}
??????in.close（）;?
????}?catch?（Exception?e）?{
??????e.printStackTrace（）;
??????throw?new?RuntimeException（e）;
????}
??}

??private?void?addQuestion（Question?q）?{
????List?list?=?
??????questions.get（q.getLevel（））;
????if（list==null）{
??????list?=?new?ArrayList（）;
??????questions.put（q.getLevel（）?list）;
????}
????list.add（q）;
??}
/*
@answer=2/3score=5level=5
指出下面語句沒有編譯錯誤的是:
long?n?=?999999999999;
int?n?=?999999999999L;
long?n?=?999999999999L;?
double?n?=?999999999999;
?*/
??private?Question?parseQuestion（
??????String?fields?String?title?
??????String?opt0?String?opt1?String?opt2?String?opt3）?
????throws?IOException{
????String[]?data?=?fields.split（“[@][a-z]+=“）;
????//fields:?@answer=2/3score=5level=5
????//?以上字符串?切為:?如下結果
????//?data:{“““2/3““5““5“}
????Question?q?=?new?Question（）;
????q.setAnswers（parseAnswer（data[1]））;
????q.setScore（Integer.parseInt（data[2]））;???
????q.setLevel（Integer.parseInt（data[3]））;
????q.settitle（title）;//讀取題干
????List?options?=?new?ArrayList（）;
????options.add（opt0）;//連續讀取4個選項
????options.add（opt1）;
????options.add（opt2）;
????options.add（opt3）;
????q.setOptions（options）;
????q.setType（q.getAnsw

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2017-05-19?17:19??簡易考試系統\
?????文件?????????503??2013-06-15?14:10??簡易考試系統\.classpath
?????文件?????????394??2013-06-17?18:53??簡易考試系統\.project
?????目錄???????????0??2017-05-19?17:19??簡易考試系統\.settings\
?????文件??????????97??2013-06-15?14:12??簡易考試系統\.settings\org.eclipse.core.resources.prefs
?????目錄???????????0??2017-06-01?16:22??簡易考試系統\bin\
?????目錄???????????0??2017-06-01?16:22??簡易考試系統\bin\com\
?????目錄???????????0??2017-06-01?16:22??簡易考試系統\bin\com\wuzy\
?????目錄???????????0??2017-06-01?16:22??簡易考試系統\bin\com\wuzy\elts\
?????目錄???????????0??2017-06-01?16:22??簡易考試系統\bin\com\wuzy\elts\entity\
?????文件????????4704??2017-06-01?16:22??簡易考試系統\bin\com\wuzy\elts\entity\EntityContext.class
?????文件????????1979??2017-06-01?16:22??簡易考試系統\bin\com\wuzy\elts\entity\ExamInfo.class
?????文件????????3603??2017-06-01?16:22??簡易考試系統\bin\com\wuzy\elts\entity\Question.class
?????文件????????1979??2017-06-01?16:22??簡易考試系統\bin\com\wuzy\elts\entity\QuestionInfo.class
?????文件????????1870??2017-06-01?16:22??簡易考試系統\bin\com\wuzy\elts\entity\User.class
?????目錄???????????0??2017-06-01?16:22??簡易考試系統\bin\com\wuzy\elts\service\
?????文件????????4222??2017-06-01?16:22??簡易考試系統\bin\com\wuzy\elts\service\ExamService.class
?????文件????????2012??2017-06-01?16:22??簡易考試系統\bin\com\wuzy\elts\service\UserService.class
?????目錄???????????0??2017-06-01?16:22??簡易考試系統\bin\com\wuzy\elts\ui\
?????文件?????????998??2017-06-01?16:22??簡易考試系統\bin\com\wuzy\elts\ui\ClientContext$1.class
?????文件?????????751??2017-06-01?16:22??簡易考試系統\bin\com\wuzy\elts\ui\ClientContext$2.class
?????文件????????6151??2017-06-01?16:22??簡易考試系統\bin\com\wuzy\elts\ui\ClientContext.class
?????文件?????????811??2017-06-01?16:22??簡易考試系統\bin\com\wuzy\elts\ui\Examframe$1.class
?????文件?????????872??2017-06-01?16:22??簡易考試系統\bin\com\wuzy\elts\ui\Examframe$2.class
?????文件?????????872??2017-06-01?16:22??簡易考試系統\bin\com\wuzy\elts\ui\Examframe$3.class
?????文件?????????872??2017-06-01?16:22??簡易考試系統\bin\com\wuzy\elts\ui\Examframe$4.class
?????文件?????????612??2017-06-01?16:22??簡易考試系統\bin\com\wuzy\elts\ui\Examframe$Option.class
?????文件????????7356??2017-06-01?16:22??簡易考試系統\bin\com\wuzy\elts\ui\Examframe.class
?????文件?????????848??2017-06-01?16:22??簡易考試系統\bin\com\wuzy\elts\ui\Loginframe$1.class
?????文件?????????882??2017-06-01?16:22??簡易考試系統\bin\com\wuzy\elts\ui\Loginframe$2.class
?????文件?????????911??2017-06-01?16:22??簡易考試系統\bin\com\wuzy\elts\ui\Loginframe$3.class
............此處省略55個文件信息