# -*- coding: UTF-8 -*- 
""" 
Created on 2016年5月7日 
 
@author: baocheng 
1、執(zhí)行帶參數(shù)的ＳＱＬ時(shí)，請(qǐng)先用sql語句指定需要輸入的條件列表，然后再用tuple/list進(jìn)行條件批配 
２、在格式ＳＱＬ中不需要使用引號(hào)指定數(shù)據(jù)類型，系統(tǒng)會(huì)根據(jù)輸入?yún)?shù)自動(dòng)識(shí)別 
３、在輸入的值中不需要使用轉(zhuǎn)意函數(shù)，系統(tǒng)會(huì)自動(dòng)處理 
""" 
 
import MySQLdb 
from MySQLdb.cursors import DictCursor 
from DBUtils.PooledDB import PooledDB 
#from PooledDB import PooledDB 
import Config 
 
""" 
Config是一些數(shù)據(jù)庫(kù)的配置文件 
""" 
 
class Mysql(object): 
 """ 
 MYSQL數(shù)據(jù)庫(kù)對(duì)象，負(fù)責(zé)產(chǎn)生數(shù)據(jù)庫(kù)連接 , 此類中的連接采用連接池實(shí)現(xiàn)獲取連接對(duì)象：conn = Mysql.getConn() 
   釋放連接對(duì)象;conn.close()或del conn 
 """ 
 #連接池對(duì)象 
 __pool = None 
 def __init__(self): 
  #數(shù)據(jù)庫(kù)構(gòu)造函數(shù)，從連接池中取出連接，并生成操作游標(biāo) 
  self._conn = Mysql.__getConn() 
  self._cursor = self._conn.cursor() 
 
 @staticmethod 
 def __getConn(): 
  """ 
  @summary: 靜態(tài)方法，從連接池中取出連接 
  @return MySQLdb.connection 
  """ 
  if Mysql.__pool is None: 
   __pool = PooledDB(creator=MySQLdb, mincached=1 , maxcached=20 , 
        host=Config.DBHOST , port=Config.DBPORT , user=Config.DBUSER , passwd=Config.DBPWD , 
        db=Config.DBNAME,use_unicode=False,charset=Config.DBCHAR,cursorclass=DictCursor) 
  return __pool.connection() 
 
 def getAll(self,sql,param=None): 
  """ 
  @summary: 執(zhí)行查詢，并取出所有結(jié)果集 
  @param sql:查詢ＳＱＬ，如果有查詢條件，請(qǐng)只指定條件列表，并將條件值使用參數(shù)[param]傳遞進(jìn)來 
  @param param: 可選參數(shù)，條件列表值（元組/列表） 
  @return: result list(字典對(duì)象)/boolean 查詢到的結(jié)果集 
  """ 
  if param is None: 
   count = self._cursor.execute(sql) 
  else: 
   count = self._cursor.execute(sql,param) 
  if count>0: 
   result = self._cursor.fetchall() 
  else: 
   result = False 
  return result 
 
 def getOne(self,sql,param=None): 
  """ 
  @summary: 執(zhí)行查詢，并取出第一條 
  @param sql:查詢ＳＱＬ，如果有查詢條件，請(qǐng)只指定條件列表，并將條件值使用參數(shù)[param]傳遞進(jìn)來 
  @param param: 可選參數(shù)，條件列表值（元組/列表） 
  @return: result list/boolean 查詢到的結(jié)果集 
  """ 
  if param is None: 
   count = self._cursor.execute(sql) 
  else: 
   count = self._cursor.execute(sql,param) 
  if count>0: 
   result = self._cursor.fetchone() 
  else: 
   result = False 
  return result 
 
 def getMany(self,sql,num,param=None): 
  """ 
  @summary: 執(zhí)行查詢，并取出num條結(jié)果 
  @param sql:查詢ＳＱＬ，如果有查詢條件，請(qǐng)只指定條件列表，并將條件值使用參數(shù)[param]傳遞進(jìn)來 
  @param num:取得的結(jié)果條數(shù) 
  @param param: 可選參數(shù)，條件列表值（元組/列表） 
  @return: result list/boolean 查詢到的結(jié)果集 
  """ 
  if param is None: 
   count = self._cursor.execute(sql) 
  else: 
   count = self._cursor.execute(sql,param) 
  if count>0: 
   result = self._cursor.fetchmany(num) 
  else: 
   result = False 
  return result 
 
 def insertOne(self,sql,value): 
  """ 
  @summary: 向數(shù)據(jù)表插入一條記錄 
  @param sql:要插入的ＳＱＬ格式 
  @param value:要插入的記錄數(shù)據(jù)tuple/list 
  @return: insertId 受影響的行數(shù) 
  """ 
  self._cursor.execute(sql,value) 
  return self.__getInsertId() 
 
 def insertMany(self,sql,values): 
  """ 
  @summary: 向數(shù)據(jù)表插入多條記錄 
  @param sql:要插入的ＳＱＬ格式 
  @param values:要插入的記錄數(shù)據(jù)tuple(tuple)/list[list] 
  @return: count 受影響的行數(shù) 
  """ 
  count = self._cursor.executemany(sql,values) 
  return count 
 
 def __getInsertId(self): 
  """ 
  獲取當(dāng)前連接最后一次插入操作生成的id,如果沒有則為０ 
  """ 
  self._cursor.execute("SELECT @@IDENTITY AS id") 
  result = self._cursor.fetchall() 
  return result[0]['id'] 
 
 def __query(self,sql,param=None): 
  if param is None: 
   count = self._cursor.execute(sql) 
  else: 
   count = self._cursor.execute(sql,param) 
  return count 
 
 def update(self,sql,param=None): 
  """ 
  @summary: 更新數(shù)據(jù)表記錄 
  @param sql: ＳＱＬ格式及條件，使用(%s,%s) 
  @param param: 要更新的 值 tuple/list 
  @return: count 受影響的行數(shù) 
  """ 
  return self.__query(sql,param) 
 
 def delete(self,sql,param=None): 
  """ 
  @summary: 刪除數(shù)據(jù)表記錄 
  @param sql: ＳＱＬ格式及條件，使用(%s,%s) 
  @param param: 要?jiǎng)h除的條件 值 tuple/list 
  @return: count 受影響的行數(shù) 
  """ 
  return self.__query(sql,param) 
 
 def begin(self): 
  """ 
  @summary: 開啟事務(wù) 
  """ 
  self._conn.autocommit(0) 
 
 def end(self,option='commit'): 
  """ 
  @summary: 結(jié)束事務(wù) 
  """ 
  if option=='commit': 
   self._conn.commit() 
  else: 
   self._conn.rollback() 
 
 def dispose(self,isEnd=1): 
  """ 
  @summary: 釋放連接池資源 
  """ 
  if isEnd==1: 
   self.end('commit') 
  else: 
   self.end('rollback'); 
  self._cursor.close() 
  self._conn.close() 

#coding:utf-8 
''''' 
Created on 2016年5月7日 
 
@author: baocheng 
''' 
DBHOST = "localhost" 
DBPORT = 33606 
DBUSER = "zbc" 
DBPWD = "123456" 
DBNAME = "test" 
DBCHAR = "utf8" 

#coding:utf-8 
''''' 
 
@author: baocheng 
''' 
from MySqlConn import Mysql 
from _sqlite3 import Row 
 
#申請(qǐng)資源 
mysql = Mysql() 
 
sqlAll = "SELECT tb.uid as uid, group_concat(tb.goodsname) as goodsname FROM ( SELECT goods.uid AS uid, IF ( ISNULL(goodsrelation.goodsname), goods.goodsID, goodsrelation.goodsname ) AS goodsname FROM goods LEFT JOIN goodsrelation ON goods.goodsID = goodsrelation.goodsId ) tb GROUP BY tb.uid" 
result = mysql.getAll(sqlAll) 
if result : 
 print "get all" 
 for row in result : 
  print "%s\t%s"%(row["uid"],row["goodsname"]) 
sqlAll = "SELECT tb.uid as uid, group_concat(tb.goodsname) as goodsname FROM ( SELECT goods.uid AS uid, IF ( ISNULL(goodsrelation.goodsname), goods.goodsID, goodsrelation.goodsname ) AS goodsname FROM goods LEFT JOIN goodsrelation ON goods.goodsID = goodsrelation.goodsId ) tb GROUP BY tb.uid" 
result = mysql.getMany(sqlAll,2) 
if result : 
 print "get many" 
 for row in result : 
  print "%s\t%s"%(row["uid"],row["goodsname"])   
   
   
result = mysql.getOne(sqlAll) 
print "get one" 
print "%s\t%s"%(result["uid"],result["goodsname"]) 
 
#釋放資源 
mysql.dispose()