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import psycopg2
import psycopg2.extras
class PgSQLConnection(object):
"""Postgres Connection Object"""
__conection_object = None
__db_config = {'dbname': 'testsrv', 'host': '192.168.2.171',
'password': 'Idkfa2009', 'port': 5432, 'user': 'admin'}
def __init__(self, connect_str=None):
self.__conection_object = None
if connect_str is not None:
self.__db_config = connect_str
else:
self.__db_config = {'dbname': 'testsrv', 'host': '192.168.2.171',
'password': 'Idkfa2009', 'port': 5432, 'user': 'admin'}
def db_connect(self, connect_str=None):
result = False
try:
if connect_str == None:
self.__conection_object = psycopg2.connect(**self.__db_config)
else:
self.__db_config = connect_str
self.__conection_object = psycopg2.connect(**self.__db_config)
self.__conection_object.autocommit = True
result = True
except Exception as error:
print(error)
return result
def getConfig(self):
return self.__db_config
def db_execute_query(self, query):
cur = self.__conection_object.cursor()
cur.execute(query)
data = cur.fetchall()
cur.close()
return data
def db_upload_large_file(self, filepath):
# a new connection must be created to use large objects
__conn = psycopg2.connect(**self.__db_config)
lobj = __conn.lobject(oid=0, mode="rw", new_oid=0, new_file=filepath)
fileoid = lobj.oid
lobj.close()
__conn.commit()
__conn.close()
return fileoid
def commit(self):
self.__conection_object.commit()
def db_close(self):
if self.__conection_object is not None:
self.__conection_object.close()
del self.__conection_object
self.__conection_object = None
def __del__(self):
if self.__conection_object is not None:
self.__conection_object.close()
# print("disconnected")
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