1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
|
#The MIT License (MIT)
#Copyright (c) 2014 Microsoft Corporation
#Permission is hereby granted, free of charge, to any person obtaining a copy
#of this software and associated documentation files (the "Software"), to deal
#in the Software without restriction, including without limitation the rights
#to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
#copies of the Software, and to permit persons to whom the Software is
#furnished to do so, subject to the following conditions:
#The above copyright notice and this permission notice shall be included in all
#copies or substantial portions of the Software.
#THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
#IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
#FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
#AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
#LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
#OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
#SOFTWARE.
"""Internal class for client side partition implementation in the Azure Cosmos database service.
"""
from six.moves import xrange
class _Partition(object):
"""Represents a class that holds the hash value and node name for each partition.
"""
def __init__(self, hash_value = None, node = None):
self.hash_value = hash_value
self.node = node
def GetNode(self):
"""Gets the name of the node(collection) for this object.
"""
return self.node
def __eq__(self, other):
return (self.hash_value == other.hash_value) and (self.node == other.node)
def __lt__(self, other):
if self == other:
return False
return self.CompareTo(other.hash_value) < 0
def CompareTo(self, other_hash_value):
"""Compares the passed hash value with the hash value of this object
"""
if len(self.hash_value) != len(other_hash_value):
raise ValueError("Length of hashes doesn't match.")
# The hash byte array that is returned from ComputeHash method has the MSB at the end of the array
# so comparing the bytes from the end for compare operations.
for i in xrange(0, len(self.hash_value)):
if(self.hash_value[len(self.hash_value) - i - 1] < other_hash_value[len(self.hash_value) - i - 1]):
return -1
elif self.hash_value[len(self.hash_value) - i - 1] > other_hash_value[len(self.hash_value) - i - 1]:
return 1
return 0
|
