292 lines
8.5 KiB
Python
292 lines
8.5 KiB
Python
# coding: utf-8
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import re
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import os
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import sys
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import pymysql.cursors
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class ORM:
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__DB_PASS = None
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__DB_USER = 'root'
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__DB_PORT = 3306
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__DB_NAME = ''
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__DB_HOST = 'localhost'
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__DB_CONN = None
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__DB_CUR = None
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__DB_ERR = None
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__DB_CNF = '/etc/my.cnf'
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__DB_SOCKET = '/www/server/mysql/mysql.sock'
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__DB_CHARSET = "utf8"
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# orm
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__DB_TABLE = "" # 被操作的表名称
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__OPT_WHERE = "" # where条件
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__OPT_LIMIT = "" # limit条件
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__OPT_GROUP = "" # group条件
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__OPT_ORDER = "" # order条件
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__OPT_FIELD = "*" # field条件
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__OPT_PARAM = () # where值
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def __Conn(self):
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'''连接数据库'''
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try:
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if os.path.exists(self.__DB_SOCKET):
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try:
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self.__DB_CONN = pymysql.connect(host=self.__DB_HOST, user=self.__DB_USER, passwd=self.__DB_PASS,
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database=self.__DB_NAME,
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port=int(self.__DB_PORT), charset=self.__DB_CHARSET, connect_timeout=1,
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unix_socket=self.__DB_SOCKET, cursorclass=pymysql.cursors.DictCursor)
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except Exception as e:
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self.__DB_HOST = '127.0.0.1'
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self.__DB_CONN = pymysql.connect(host=self.__DB_HOST, user=self.__DB_USER, passwd=self.__DB_PASS,
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database=self.__DB_NAME,
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port=int(self.__DB_PORT), charset=self.__DB_CHARSET, connect_timeout=1,
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unix_socket=self.__DB_SOCKET, cursorclass=pymysql.cursors.DictCursor)
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else:
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try:
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self.__DB_CONN = pymysql.connect(host=self.__DB_HOST, user=self.__DB_USER, passwd=self.__DB_PASS,
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database=self.__DB_NAME,
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port=int(self.__DB_PORT), charset=self.__DB_CHARSET, connect_timeout=1,
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cursorclass=pymysql.cursors.DictCursor)
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except Exception as e:
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self.__DB_HOST = '127.0.0.1'
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self.__DB_CONN = pymysql.connect(host=self.__DB_HOST, user=self.__DB_USER, passwd=self.__DB_PASS,
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database=self.__DB_NAME,
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port=int(self.__DB_PORT), charset=self.__DB_CHARSET, connect_timeout=1,
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cursorclass=pymysql.cursors.DictCursor)
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self.__DB_CUR = self.__DB_CONN.cursor()
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return True
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except Exception as e:
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self.__DB_ERR = e
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return False
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def setDbConf(self, conf):
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self.__DB_CNF = conf
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def setSocket(self, sock):
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self.__DB_SOCKET = sock
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def setCharset(self, charset):
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self.__DB_CHARSET = charset
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def setHost(self, host):
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self.__DB_HOST = host
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def setPort(self, port):
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self.__DB_PORT = port
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def setUser(self, user):
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self.__DB_USER = user
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def setPwd(self, pwd):
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self.__DB_PASS = pwd
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def getPwd(self):
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return self.__DB_PASS
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def setDbName(self, name):
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self.__DB_NAME = name
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def execute(self, sql, param=()):
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# 执行SQL语句返回受影响行
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if not self.__Conn():
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return self.__DB_ERR
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try:
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result = self.__DB_CUR.execute(sql,param)
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self.__DB_CONN.commit()
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self.__Close()
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return result
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except Exception as ex:
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return ex
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def query(self, sql, param=()):
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# 执行SQL语句返回数据集
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if not self.__Conn():
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return self.__DB_ERR
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try:
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self.__DB_CUR.execute(sql,param)
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result = self.__DB_CUR.fetchall()
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# print(result)
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# 将元组转换成列表
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# data = map(list, result)
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self.__Close()
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return result
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except Exception as ex:
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return ex
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def __Close(self):
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# 关闭连接
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self.__DB_CUR.close()
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self.__DB_CONN.close()
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def checkInput(self, data):
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if not data:
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return data
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if type(data) != str:
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return data
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checkList = [
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{'d': '<', 'r': '＜'},
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{'d': '>', 'r': '＞'},
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{'d': '\'', 'r': '‘'},
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{'d': '"', 'r': '“'},
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{'d': '&', 'r': '＆'},
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{'d': '#', 'r': '＃'},
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{'d': '<', 'r': '＜'}
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]
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for v in checkList:
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data = data.replace(v['d'], v['r'])
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return data
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def table(self, table):
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# 设置表名
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self.__DB_TABLE = table
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return self
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def where(self, where, param):
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# WHERE条件
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if where:
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self.__OPT_WHERE = " WHERE " + where
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self.__OPT_PARAM = param
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return self
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def andWhere(self, where, param):
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# WHERE条件
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if where:
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self.__OPT_WHERE = self.__OPT_WHERE + " and " + where
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# print(param)
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# print(self.__OPT_PARAM)
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self.__OPT_PARAM = self.__OPT_PARAM + param
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return self
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def order(self, order):
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# ORDER条件
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if len(order):
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self.__OPT_ORDER = " ORDER BY " + order
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else:
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self.__OPT_ORDER = ""
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return self
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def group(self, group):
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if len(group):
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self.__OPT_GROUP = " GROUP BY " + group
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else:
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self.__OPT_GROUP = ""
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return self
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def limit(self, limit):
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# LIMIT条件
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if len(limit):
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self.__OPT_LIMIT = " LIMIT " + limit
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else:
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self.__OPT_LIMIT = ""
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return self
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def field(self, field):
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# FIELD条件
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if len(field):
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self.__OPT_FIELD = field
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return self
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def find(self):
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# 取一行数据
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result = self.limit("1").select()
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# print(result)
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if len(result) == 1:
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return result[0]
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return result
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def select(self):
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# 查询数据集
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sql = "SELECT " + self.__OPT_FIELD + " FROM " + self.__DB_TABLE + \
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self.__OPT_WHERE + self.__OPT_GROUP + self.__OPT_ORDER + self.__OPT_LIMIT
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# print(sql)
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# print(self.__OPT_PARAM)
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result = self.query(sql, self.__OPT_PARAM)
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return result
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def getField(self, keyName):
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# 取回指定字段
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result = self.field(keyName).select()
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# print(result[0][keyName])
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if len(result) == 1:
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return result[0][keyName]
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return result
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def setField(self, keyName, keyValue):
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# 更新指定字段
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return self.save(keyName, (keyValue,))
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# 构造数据
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def __format_pdata(self, pdata):
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keys = pdata.keys()
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keys_str = ','.join(keys)
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param = []
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for k in keys:
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param.append(pdata[k])
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return keys_str, tuple(param)
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def delete(self, id=None):
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# 删除数据
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if id:
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self.__OPT_WHERE = " WHERE id=%s"
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self.__OPT_PARAM = (id,)
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sql = "DELETE FROM " + self.__DB_TABLE + self.__OPT_WHERE
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# print(sql)
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result = self.execute(sql, self.__OPT_PARAM)
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return result
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def save(self, keys, param):
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# 更新数据
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opt = ""
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for key in keys.split(','):
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opt += key + "=%s,"
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opt = opt[0:len(opt) - 1]
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sql = "UPDATE " + self.__DB_TABLE + " SET " + opt + self.__OPT_WHERE
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# 处理拼接WHERE与UPDATE参数
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tmp = list(param)
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for arg in self.__OPT_PARAM:
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tmp.append(arg)
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self.__OPT_PARAM = tuple(tmp)
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# print(sql,self.__OPT_PARAM)
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result = self.execute(sql, self.__OPT_PARAM)
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return result
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# 更新数据
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def update(self, pdata):
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if not pdata:
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return False
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keys, param = self.__format_pdata(pdata)
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return self.save(keys, param)
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def add(self, keys, param):
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# 插入数据
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values = ""
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for key in keys.split(','):
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values += "%s,"
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values = self.checkInput(values[0:len(values) - 1])
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sql = "INSERT INTO " + self.__DB_TABLE + \
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"(" + keys + ") " + "VALUES(" + values + ")"
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# print(sql)
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result = self.execute(sql, param)
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return result
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