package?com.zhouchao.db;

import?java.io.BufferedReader;
import?java.io.File;
import?java.io.FileInputStream;
import?java.io.FileOutputStream;
import?java.io.InputStreamReader;
import?java.io.OutputStreamWriter;
import?java.io.PrintWriter;
import?java.util.List;

public?class?Alter?implements?Operate?{
	private?Table?table?=?null;
	private?String?tableName;//?待操作的表名
	private?boolean?isAdd;//?true表示add操作，false表示drop操作
	private?List?fields?=?null;//?待操作的屬性列表

	private?String?account?=?null;

	public?Alter（String?account）?{
		this.account?=?account;
	}

	@Override
	public?void?start（）?throws?Exception?{
		ParseAccount.parseAlter（this）;//?解析alter語句（操作所涉及的表名和操作類型）
		this.table?=?OperUtil.loadTable（this.tableName）;//?加載操作所涉及的關系表
		ParseAccount.parseAlterAddAndDr

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2017-11-06?15:58??DBMS\
?????目錄???????????0??2017-11-06?15:42??DBMS\database\
?????文件????????6148??2017-10-22?21:33??DBMS\database\.DS_Store
?????目錄???????????0??2017-11-08?20:20??__MACOSX\
?????目錄???????????0??2017-11-08?20:20??__MACOSX\DBMS\
?????目錄???????????0??2017-11-08?20:20??__MACOSX\DBMS\database\
?????文件?????????120??2017-10-22?21:33??__MACOSX\DBMS\database\._.DS_Store
?????文件?????????373??2017-04-30?12:10??DBMS\database\test1.config
?????文件?????????231??2017-04-30?12:10??__MACOSX\DBMS\database\._test1.config
?????目錄???????????0??2017-10-30?15:21??DBMS\database\test1\
?????文件?????????521??2017-04-30?02:48??DBMS\database\test1\unrepatedIndex.config
?????目錄???????????0??2017-11-08?20:20??__MACOSX\DBMS\database\test1\
?????文件?????????175??2017-04-30?02:48??__MACOSX\DBMS\database\test1\._unrepatedIndex.config
?????文件??????165640??2017-04-30?12:05??DBMS\database\test1\unrepatedIndex
?????文件?????????175??2017-04-30?12:05??__MACOSX\DBMS\database\test1\._unrepatedIndex
?????文件??????????70??2017-04-29?15:56??DBMS\database\test1\person
?????文件?????????175??2017-04-29?15:56??__MACOSX\DBMS\database\test1\._person
?????文件?????????194??2017-04-30?13:23??DBMS\database\test1\salary
?????文件?????????175??2017-04-30?13:23??__MACOSX\DBMS\database\test1\._salary
?????文件???????57341??2017-04-30?12:17??DBMS\database\test1\index1
?????文件?????????175??2017-04-30?12:17??__MACOSX\DBMS\database\test1\._index1
?????文件?????????529??2017-04-29?15:56??DBMS\database\test1\person.config
?????文件?????????175??2017-04-29?15:56??__MACOSX\DBMS\database\test1\._person.config
?????文件?????????539??2017-04-29?15:57??DBMS\database\test1\salary.config
?????文件?????????175??2017-04-29?15:57??__MACOSX\DBMS\database\test1\._salary.config
?????文件?????????571??2017-04-30?12:47??DBMS\database\test1\employee.config
?????文件?????????231??2017-04-30?12:47??__MACOSX\DBMS\database\test1\._employee.config
?????文件?????????497??2017-04-30?12:10??DBMS\database\test1\index1.config
?????文件?????????175??2017-04-30?12:10??__MACOSX\DBMS\database\test1\._index1.config
?????文件?????????207??2017-04-30?12:48??DBMS\database\test1\employee
?????文件?????????175??2017-04-30?12:48??__MACOSX\DBMS\database\test1\._employee
............此處省略127個文件信息