282 lines
8.4 KiB
Python
Executable File
282 lines
8.4 KiB
Python
Executable File
# coding: utf-8
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import sqlite3
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import os
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class Sql():
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#------------------------------
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# 数据库操作类 For sqlite3
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#------------------------------
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__DB_FILE = None # 数据库文件
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__DB_CONN = None # 数据库连接对象
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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_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 __init__(self):
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self.__DB_FILE = 'data/default.db'
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def __GetConn(self):
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# 取数据库对象
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try:
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if self.__DB_CONN == None:
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self.__DB_CONN = sqlite3.connect(self.__DB_FILE)
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except Exception as ex:
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return "error: " + str(ex)
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def dbfile(self, name):
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self.__DB_FILE = 'data/' + name + '.db'
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return self
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def dbPos(self, path, name):
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self.__DB_FILE = path + '/' + name + '.db'
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return self
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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 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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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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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 select(self):
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# 查询数据集
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self.__GetConn()
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try:
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sql = "SELECT " + self.__OPT_FIELD + " FROM " + self.__DB_TABLE + \
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self.__OPT_WHERE + self.__OPT_ORDER + self.__OPT_LIMIT
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result = self.__DB_CONN.execute(sql, self.__OPT_PARAM)
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data = result.fetchall()
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# 构造字曲系列
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if self.__OPT_FIELD != "*":
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field = self.__OPT_FIELD.split(',')
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tmp = []
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for row in data:
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i = 0
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tmp1 = {}
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for key in field:
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tmp1[key] = row[i]
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i += 1
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tmp.append(tmp1)
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del(tmp1)
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data = tmp
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del(tmp)
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else:
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# 将元组转换成列表
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tmp = map(list, data)
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data = tmp
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del(tmp)
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self.__close()
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return data
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except Exception as ex:
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return "error: " + str(ex)
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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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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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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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if len(result) == 1:
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return result[0]
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return result
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def count(self):
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# 取行数
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key = "COUNT(*)"
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data = self.field(key).select()
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try:
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return int(data[0][key])
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except:
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return 0
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def add(self, keys, param):
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# 插入数据
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self.__GetConn()
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self.__DB_CONN.text_factory = str
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try:
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values = ""
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for key in keys.split(','):
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values += "?,"
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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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result = self.__DB_CONN.execute(sql, param)
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id = result.lastrowid
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self.__close()
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self.__DB_CONN.commit()
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return id
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except Exception as ex:
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return "error: " + str(ex)
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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 addAll(self, keys, param):
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# 插入数据
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self.__GetConn()
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self.__DB_CONN.text_factory = str
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try:
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values = ""
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for key in keys.split(','):
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values += "?,"
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values = 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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result = self.__DB_CONN.execute(sql, param)
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return True
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except Exception as ex:
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return "error: " + str(ex)
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def commit(self):
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self.__close()
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self.__DB_CONN.commit()
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def save(self, keys, param):
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# 更新数据
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self.__GetConn()
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self.__DB_CONN.text_factory = str
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try:
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opt = ""
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for key in keys.split(','):
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opt += key + "=?,"
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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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import mw
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mw.writeFile('/tmp/test.pl', sql)
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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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result = self.__DB_CONN.execute(sql, self.__OPT_PARAM)
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self.__close()
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self.__DB_CONN.commit()
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return result.rowcount
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except Exception as ex:
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return "error: " + str(ex)
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def delete(self, id=None):
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# 删除数据
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self.__GetConn()
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try:
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if id:
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self.__OPT_WHERE = " WHERE id=?"
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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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result = self.__DB_CONN.execute(sql, self.__OPT_PARAM)
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self.__close()
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self.__DB_CONN.commit()
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return result.rowcount
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except Exception as ex:
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return "error: " + str(ex)
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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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self.__GetConn()
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# print sql, param
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try:
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result = self.__DB_CONN.execute(sql, param)
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self.__DB_CONN.commit()
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return result.rowcount
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except Exception as ex:
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return "error: " + str(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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self.__GetConn()
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try:
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result = self.__DB_CONN.execute(sql, param)
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# 将元组转换成列表
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data = map(list, result)
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return data
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except Exception as ex:
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return "error: " + str(ex)
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def create(self, name):
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# 创建数据表
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self.__GetConn()
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import mw
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script = mw.readFile('data/' + name + '.sql')
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result = self.__DB_CONN.executescript(script)
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self.__DB_CONN.commit()
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return result.rowcount
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def fofile(self, filename):
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# 执行脚本
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self.__GetConn()
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import mw
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script = mw.readFile(filename)
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result = self.__DB_CONN.executescript(script)
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self.__DB_CONN.commit()
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return result.rowcount
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def __close(self):
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# 清理条件属性
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self.__OPT_WHERE = ""
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self.__OPT_FIELD = "*"
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self.__OPT_ORDER = ""
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self.__OPT_LIMIT = ""
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self.__OPT_PARAM = ()
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def close(self):
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# 释放资源
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try:
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self.__DB_CONN.close()
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self.__DB_CONN = None
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except:
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pass
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