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db.py
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#coding: utf-8
# +-------------------------------------------------------------------
# | 宝塔Linux面板
# +-------------------------------------------------------------------
# | Copyright (c) 2015-2016 宝塔软件(http://bt.cn) All rights reserved.
# +-------------------------------------------------------------------
# | Author: 黄文良 <[email protected]>
# +-------------------------------------------------------------------
import sqlite3
import os
class Sql():
#------------------------------
# 数据库操作类 For sqlite3
#------------------------------
__DB_FILE = None # 数据库文件
__DB_CONN = None # 数据库连接对象
__DB_TABLE = "" # 被操作的表名称
__OPT_WHERE = "" # where条件
__OPT_LIMIT = "" # limit条件
__OPT_ORDER = "" # order条件
__OPT_FIELD = "*" # field条件
__OPT_PARAM = () # where值
def __init__(self):
self.__DB_FILE = 'data/default.db'
def __GetConn(self):
#取数据库对象
try:
if self.__DB_CONN == None:
self.__DB_CONN = sqlite3.connect(self.__DB_FILE)
except Exception as ex:
return "error: " + str(ex)
def dbfile(self,name):
self.__DB_FILE = 'data/' + name + '.db'
return self
def table(self,table):
#设置表名
self.__DB_TABLE = table
return self
def where(self,where,param):
#WHERE条件
if where:
self.__OPT_WHERE = " WHERE " + where
self.__OPT_PARAM = param
return self
def order(self,order):
#ORDER条件
if len(order):
self.__OPT_ORDER = " ORDER BY "+order
return self
def limit(self,limit):
#LIMIT条件
if len(limit):
self.__OPT_LIMIT = " LIMIT "+limit
return self
def field(self,field):
#FIELD条件
if len(field):
self.__OPT_FIELD = field
return self
def select(self):
#查询数据集
self.__GetConn()
try:
sql = "SELECT " + self.__OPT_FIELD + " FROM " + self.__DB_TABLE + self.__OPT_WHERE + self.__OPT_ORDER + self.__OPT_LIMIT
result = self.__DB_CONN.execute(sql,self.__OPT_PARAM)
data = result.fetchall()
#构造字曲系列
if self.__OPT_FIELD != "*":
field = self.__OPT_FIELD.split(',')
tmp = []
for row in data:
i=0
tmp1 = {}
for key in field:
tmp1[key] = row[i]
i += 1
tmp.append(tmp1)
del(tmp1)
data = tmp
del(tmp)
else:
#将元组转换成列表
tmp = list(map(list,data))
data = tmp
del(tmp)
self.__close()
return data
except Exception as ex:
return "error: " + str(ex)
def getField(self,keyName):
#取回指定字段
result = self.field(keyName).select();
if len(result) == 1:
return result[0][keyName]
return result
def setField(self,keyName,keyValue):
#更新指定字段
return self.save(keyName,(keyValue,))
def find(self):
#取一行数据
result = self.limit("1").select()
if len(result) == 1:
return result[0]
return result
def count(self):
#取行数
key="COUNT(*)"
data = self.field(key).select()
try:
return int(data[0][key])
except:
return 0
def add(self,keys,param):
#插入数据
self.__GetConn()
self.__DB_CONN.text_factory = str
try:
values=""
for key in keys.split(','):
values += "?,"
values = values[0:len(values)-1];
sql = "INSERT INTO "+self.__DB_TABLE+"("+keys+") "+"VALUES("+values+")"
result = self.__DB_CONN.execute(sql,param)
id = result.lastrowid
self.__close()
self.__DB_CONN.commit()
return id
except Exception as ex:
return "error: " + str(ex)
def addAll(self,keys,param):
#插入数据
self.__GetConn()
self.__DB_CONN.text_factory = str
try:
values=""
for key in keys.split(','):
values += "?,"
values = values[0:len(values)-1]
sql = "INSERT INTO "+self.__DB_TABLE+"("+keys+") "+"VALUES("+values+")"
result = self.__DB_CONN.execute(sql,param)
return True
except Exception as ex:
return "error: " + str(ex)
def commit(self):
self.__close()
self.__DB_CONN.commit()
def save(self,keys,param):
#更新数据
self.__GetConn()
self.__DB_CONN.text_factory = str
try:
opt = ""
for key in keys.split(','):
opt += key + "=?,"
opt = opt[0:len(opt)-1]
sql = "UPDATE " + self.__DB_TABLE + " SET " + opt+self.__OPT_WHERE
import public
public.writeFile('/tmp/test.pl',sql)
#处理拼接WHERE与UPDATE参数
tmp = list(param)
for arg in self.__OPT_PARAM:
tmp.append(arg)
self.__OPT_PARAM = tuple(tmp)
result = self.__DB_CONN.execute(sql,self.__OPT_PARAM)
self.__close()
self.__DB_CONN.commit()
return result.rowcount
except Exception as ex:
return "error: " + str(ex)
def delete(self,id=None):
#删除数据
self.__GetConn()
try:
if id:
self.__OPT_WHERE = " WHERE id=?"
self.__OPT_PARAM = (id,)
sql = "DELETE FROM " + self.__DB_TABLE + self.__OPT_WHERE
result = self.__DB_CONN.execute(sql,self.__OPT_PARAM)
self.__close()
self.__DB_CONN.commit()
return result.rowcount
except Exception as ex:
return "error: " + str(ex)
def execute(self,sql,param):
#执行SQL语句返回受影响行
self.__GetConn()
try:
result = self.__DB_CONN.execute(sql,param)
self.__DB_CONN.commit()
return result.rowcount
except Exception as ex:
return "error: " + str(ex)
def query(self,sql,param):
#执行SQL语句返回数据集
self.__GetConn()
try:
result = self.__DB_CONN.execute(sql,param)
#将元组转换成列表
data = list(map(list,result))
return data
except Exception as ex:
return "error: " + str(ex)
def create(self,name):
#创建数据表
self.__GetConn()
import public
script = public.readFile('data/' + name + '.sql')
result = self.__DB_CONN.executescript(script)
self.__DB_CONN.commit()
return result.rowcount
def fofile(self,filename):
#执行脚本
self.__GetConn()
import public
script = public.readFile(filename)
result = self.__DB_CONN.executescript(script)
self.__DB_CONN.commit()
return result.rowcount
def __close(self):
#清理条件属性
self.__OPT_WHERE = ""
self.__OPT_FIELD = "*"
self.__OPT_ORDER = ""
self.__OPT_LIMIT = ""
self.__OPT_PARAM = ()
def close(self):
#释放资源
try:
self.__DB_CONN.close()
self.__DB_CONN = None
except:
pass