def exists(self, nid):
if self.__useBuffer:
return nid in self.__buffer
else:
cursor = self.__dbcon.cursor()
cursor.execute(
"select nodekey from nodes where parentkey=? and name=? and isdir=?",
(self.getCurrentParentId(), Node.nid2Name(nid), Node.nid2IsDirectory(nid)),
)
result = cursor.fetchone() == None
cursor.close()
return result
def getNodeByNid(self, nid):
if self.__useBuffer:
if self.exists(nid):
return self.__buffer[nid]
else:
return None
else:
cursor = self.__dbcon.cursor()
cursor.execute(
"select " + self.__databaseSelectString + " from nodes where parentkey=? and name=? and isdir=?",
(self.getCurrentParentId(), Node.nid2Name(nid), Node.nid2IsDirectory(nid)),
)
row = cursor.fetchone()
if row is None:
return None
node = self.__fetch(row)
cursor.close()
return node
