Created
February 6, 2018 05:55
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class OracleCursor: | |
"""游标类""" | |
def __init__(self, cursor, logger, dict_result): | |
self.cursor = cursor | |
self.logger = logger | |
self.dict_result = dict_result | |
def _dict_result(self, cursor): | |
cols = [d[0].lower() for d in cursor.description] | |
def row_factory(*args): | |
return dict(zip(cols, args)) | |
return row_factory | |
def execute(self, sql, params=None): | |
if params: | |
self.cursor.execute(sql, params) | |
else: | |
self.cursor.execute(sql) | |
def query(self, sql, params=None, with_description=False): | |
if params: | |
self.cursor.execute(sql, params) | |
else: | |
self.cursor.execute(sql) | |
if self.dict_result: | |
self.cursor.rowfactory = self._dict_result(self.cursor) | |
rows = self.cursor.fetchall() | |
if with_description: | |
res = rows, self.cursor.description | |
else: | |
res = rows | |
return res | |
class OracleInstance: | |
"""实例类""" | |
def __init__(self, username, password, host, port, sid, | |
charset='utf8',dict_result=False,logger=None): | |
self.username = username | |
self.password = password | |
self.host = host | |
self.port = port | |
self.sid = sid | |
self.charset = charset | |
self.dict_result = dict_result | |
if logger is None: | |
logger=logging.getLogger(__name__) | |
self.logger = logger | |
def __enter__(self): | |
dsn_tns = cx_Oracle.makedsn(self.host, self.port, self.sid) | |
self.con = cx_Oracle.connect(self.username, self.password, dsn_tns) | |
self.cursor = self.con.cursor() | |
return OracleCursor(self.cursor, self.logger, self.dict_result) | |
def __exit__(self, exc_type, exc_val, exc_tb): | |
self.cursor.execute("commit") | |
self.cursor.close() | |
self.con.close() |
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