本文整理汇总了Python中sqlite3.Connection.close方法的典型用法代码示例。如果您正苦于以下问题：Python Connection.close方法的具体用法？Python Connection.close怎么用？Python Connection.close使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类sqlite3.Connection的用法示例。
在下文中一共展示了Connection.close方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: _purge_old_search_metadata_communities
# 需要导入模块: from sqlite3 import Connection [as 别名]
# 或者: from sqlite3.Connection import close [as 别名]
def _purge_old_search_metadata_communities(self):
"""
Cleans up all SearchCommunity and MetadataCommunity stuff in dispersy database.
"""
db_path = os.path.join(self.session.get_state_dir(), u"sqlite", u"dispersy.db")
if not os.path.isfile(db_path):
return
communities_to_delete = (u"SearchCommunity", u"MetadataCommunity", u"TunnelCommunity")
connection = Connection(db_path)
cursor = connection.cursor()
for community in communities_to_delete:
try:
result = list(cursor.execute(u"SELECT id FROM community WHERE classification == ?;", (community,)))
for community_id, in result:
cursor.execute(u"DELETE FROM community WHERE id == ?;", (community_id,))
cursor.execute(u"DELETE FROM meta_message WHERE community == ?;", (community_id,))
cursor.execute(u"DELETE FROM sync WHERE community == ?;", (community_id,))
except StopIteration:
continue
cursor.close()
connection.commit()
connection.close()示例2: _update_dispersy
# 需要导入模块: from sqlite3 import Connection [as 别名]
# 或者: from sqlite3.Connection import close [as 别名]
def _update_dispersy(self):
"""
Cleans up all SearchCommunity and MetadataCommunity stuff in dispersy database.
"""
db_path = os.path.join(self.session.get_state_dir(), u"sqlite", u"dispersy.db")
if not os.path.isfile(db_path):
return
communities_to_delete = (u"SearchCommunity", u"MetadataCommunity")
connection = Connection(db_path)
cursor = connection.cursor()
data_updated = False
for community in communities_to_delete:
try:
result = list(cursor.execute(u"SELECT id FROM community WHERE classification == ?", (community,)))
for community_id, in result:
self._logger.info(u"deleting all data for community %s...", community_id)
cursor.execute(u"DELETE FROM community WHERE id == ?", (community_id,))
cursor.execute(u"DELETE FROM meta_message WHERE community == ?", (community_id,))
cursor.execute(u"DELETE FROM sync WHERE community == ?", (community_id,))
data_updated = True
except StopIteration:
continue
if data_updated:
connection.commit()
cursor.close()
connection.close()示例3: Graph
# 需要导入模块: from sqlite3 import Connection [as 别名]
# 或者: from sqlite3.Connection import close [as 别名]
class Graph(object):
"""
Initializes a new Graph object.
:param uri: The URI of the SQLite db.
:param graphs: Graphs to create.
"""
def __init__(self, uri, graphs=()):
self.uri = uri
self.db = Connection(database=uri)
self.setup_sql(graphs)
def setup_sql(self, graphs):
"""
Sets up the SQL tables for the graph object,
and creates indexes as well.
:param graphs: The graphs to create.
"""
with closing(self.db.cursor()) as cursor:
for table in graphs:
cursor.execute(SQL.CREATE_TABLE % (table))
for index in SQL.INDEXES:
cursor.execute(index % (table))
self.db.commit()
def close(self):
"""
Close the SQLite connection.
"""
self.db.close()
__del__ = close
def __contains__(self, edge):
"""
Checks if an edge exists within the database
with the given source and destination nodes.
:param edge: The edge to query.
"""
with closing(self.db.cursor()) as cursor:
cursor.execute(*SQL.select_one(edge.src, edge.rel, edge.dst))
return bool(cursor.fetchall())
def find(self, edge_query):
"""
Returns a Query object that acts on the graph.
"""
return Query(self.db)(edge_query)
def transaction(self):
"""
Returns a Transaction object. All modifying
operations, i.e. ``store``, ``delete`` must
then be performed on the transaction object.
"""
return Transaction(self.db)