Ahenk/opt/ahenk/base/database/AhenkDbService.py
2016-03-16 10:40:17 +02:00

88 lines
3.4 KiB
Python

#!/usr/bin/python3
# -*- coding: utf-8 -*-
# Author: İsmail BAŞARAN <ismail.basaran@tubitak.gov.tr> <basaran.ismaill@gmail.com>
from base.Scope import Scope
import sqlite3
class AhenkDbService(object):
"""
Sqlite manager for ahenk
"""
def __init__(self):
scope = Scope.getInstance()
self.logger = scope.getLogger()
self.configurationManager = scope.getConfigurationManager()
self.db_path=self.configurationManager.get("BASE","dbPath")
self.connection=None
self.cursor = None
def connect(self):
try:
self.connection=sqlite3.connect(self.db_path, check_same_thread=False)
self.cursor = self.connection.cursor()
except Exception as e:
self.logger.error('Database connection error ' + str(e))
def check_and_create_table(self,table_name,cols):
if self.cursor:
cols = ', '.join([str(x) for x in cols])
self.cursor.execute('create table if not exists '+table_name+' ('+cols+')')
else:
self.warn("Could not create table cursor is None! Table Name : " + str(table_name))
def drop_table(self,table_name):
sql = "DROP TABLE "+table_name
self.cursor.execute(sql)
self.connection.commit()
def update(self, table_name, cols, args, criteria=None):
try:
if self.connection:
if criteria == None:
cols = ', '.join([str(x) for x in cols])
params = ', '.join(["?" for x in args])
sql = "INSERT INTO "+table_name+" ("+cols+") VALUES ("+params+")"
self.cursor.execute(sql, tuple(args))
else:
update_list = ""
params = ', '.join(["?" for x in args])
for index in range(len(cols)):
update_list = update_list + " " + cols[index] +" = ?,"
update_list = update_list.strip(',')
sql = "UPDATE "+table_name+" SET " + update_list + " " + criteria
self.cursor.execute(sql, tuple(args))
self.connection.commit()
else:
self.warn("Could not update table cursor is None! Table Name : " + str(table_name))
except Exception as e:
self.logger.error("Updating table error ! Table Name : " + str(table_name) + " " + str(e))
def delete(self):
sql = "DELETE FROM " + table_name + str(criteria)
self.cursor.execute(sql)
self.connection.commit()
def findByProperty(self):
# Not implemented yet
pass
def select(self,table_name, cols="*", criteria="", orderby=""):
if self.cursor:
try:
if not cols == "*":
cols = ', '.join([str(x) for x in cols])
sql = "SELECT "+cols+" FROM " + table_name + " where 1=1 and " + str(criteria) + " " + orderby
self.cursor.execute(sql)
rows = self.cursor.fetchall()
return rows
except Exception as e:
raise
else:
self.warn("Could not select table cursor is None! Table Name : " + str(table_name))
def close(self):
try:
self.cursor.close()
self.connection.close()
except Exception as e:
self.logger.error("Closing database connection error " + str(e))