378 lines
11 KiB
Python
378 lines
11 KiB
Python
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# coding: utf-8
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# +-------------------------------------------------------------------
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# | YakPanel
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# +-------------------------------------------------------------------
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# | Copyright (c) 2015-2099 YakPanel(www.yakpanel.com) All rights reserved.
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# +-------------------------------------------------------------------
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import sqlite3
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import os, time, sys
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os.chdir('/www/server/panel')
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if not 'class/' in sys.path:
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sys.path.insert(0, 'class/')
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import public
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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, dbfile=None):
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if not os.path.exists("class/projectModel/content/"):
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os.makedirs("class/projectModel/content/")
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if not dbfile:
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self.__DB_FILE = 'class/projectModel/content/content.db'
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self.__LOCK = '/dev/shm/{}.pl'.format(self.__DB_FILE.replace('/', '_'))
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else:
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self.__DB_FILE ='class/projectModel/content/' + dbfile + '.db'
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self.__LOCK = '/dev/shm/{}.pl'.format(self.__DB_FILE.replace('/', '_'))
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if not os.path.exists(self.__DB_FILE):
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# 创建数据库
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conn = sqlite3.connect(self.__DB_FILE)
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conn.close()
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def __enter__(self):
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return self
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def __exit__(self, exc_type, exc_value, exc_trackback):
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self.close()
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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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self.__DB_CONN.text_factory = str
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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 = 'class/projectModel/content/' + 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 = self.__to_tuple(param)
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return self
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def __to_tuple(self, param):
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# 将参数转换为tuple
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if type(param) != tuple:
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if type(param) == list:
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param = tuple(param)
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else:
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param = (param,)
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return param
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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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self.__get_columns()
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sql = "SELECT " + self.__OPT_FIELD + " FROM " + self.__DB_TABLE + 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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# 构造字典系列
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if self.__OPT_FIELD != "*":
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fields = self.__format_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 fields:
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tmp1[key.strip('`')] = 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 = list(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 get(self):
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self.__get_columns()
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return self.select()
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def __format_field(self, field):
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import re
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fields = []
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for key in field:
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s_as = re.search(r'\s+as\s+', key, flags=re.IGNORECASE)
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if s_as:
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as_tip = s_as.group()
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key = key.split(as_tip)[1]
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fields.append(key)
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return fields
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def __get_columns(self):
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if self.__OPT_FIELD == '*':
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tmp_cols = self.query('PRAGMA table_info(' + self.__DB_TABLE + ')', ())
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cols = []
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for col in tmp_cols:
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if len(col) > 2: cols.append('`' + col[1] + '`')
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if len(cols) > 0: self.__OPT_FIELD = ','.join(cols)
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def getField(self, keyName):
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# 取回指定字段
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try:
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result = self.field(keyName).select()
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if len(result) != 0:
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return result[0][keyName]
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return result
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except:
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return None
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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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try:
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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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except:
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return None
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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.write_lock()
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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 + "(" + keys + ") " + "VALUES(" + values + ")"
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result = self.__DB_CONN.execute(sql, self.__to_tuple(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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self.rm_lock()
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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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# 插入数据
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def insert(self, pdata):
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if not pdata: return False
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keys, param = self.__format_pdata(pdata)
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return self.add(keys, param)
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# 更新数据
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def update(self, pdata):
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if not pdata: 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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# 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: param.append(pdata[k])
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return keys_str, tuple(param)
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def addAll(self, keys, param):
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# 插入数据
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self.write_lock()
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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 + "(" + keys + ") " + "VALUES(" + values + ")"
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result = self.__DB_CONN.execute(sql, self.__to_tuple(param))
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self.rm_lock()
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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.write_lock()
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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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# 处理拼接WHERE与UPDATE参数
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tmp = list(self.__to_tuple(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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self.rm_lock()
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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.write_lock()
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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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self.rm_lock()
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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.write_lock()
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self.__GetConn()
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try:
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result = self.__DB_CONN.execute(sql, self.__to_tuple(param))
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self.__DB_CONN.commit()
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self.rm_lock()
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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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# 是否有锁
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def is_lock(self):
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n = 0
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while os.path.exists(self.__LOCK):
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n += 1
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if n > 100:
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self.rm_lock()
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break
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time.sleep(0.01)
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# 写锁
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def write_lock(self):
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self.is_lock()
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with open(self.__LOCK, 'wb+') as f:
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f.close()
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# 解锁
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def rm_lock(self):
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if os.path.exists(self.__LOCK):
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try:
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os.remove(self.__LOCK)
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except:
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pass
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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, self.__to_tuple(param))
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# 将元组转换成列表
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data = list(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.write_lock()
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self.__GetConn()
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script = public.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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self.rm_lock()
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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.write_lock()
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self.__GetConn()
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script = public.readFile(filename)
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result = self.__DB_CONN.executescript(script)
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self.__DB_CONN.commit()
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self.rm_lock()
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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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