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#!/usr/bin/env python
#
# Public Domain 2014-2016 MongoDB, Inc.
# Public Domain 2008-2014 WiredTiger, Inc.
#
# This is free and unencumbered software released into the public domain.
#
# Anyone is free to copy, modify, publish, use, compile, sell, or
# distribute this software, either in source code form or as a compiled
# binary, for any purpose, commercial or non-commercial, and by any
# means.
#
# In jurisdictions that recognize copyright laws, the author or authors
# of this software dedicate any and all copyright interest in the
# software to the public domain. We make this dedication for the benefit
# of the public at large and to the detriment of our heirs and
# successors. We intend this dedication to be an overt act of
# relinquishment in perpetuity of all present and future rights to this
# software under copyright law.
#
# 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 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.
import os
import wiredtiger, wttest, run
from wtscenario import check_scenarios, multiply_scenarios, number_scenarios
# test_join06.py
# Join operations
# Joins with a read-uncommitted
class test_join06(wttest.WiredTigerTestCase):
nentries = 1000
isoscen = [
('isolation_read_uncommitted', dict(uncommitted=True)),
('isolation_default', dict(uncommitted=False))
]
bloomscen = [
('bloom', dict(bloom=True)),
('nobloom', dict(bloom=False))
]
scenarios = number_scenarios(multiply_scenarios('.', isoscen, bloomscen))
def gen_values(self, i):
s = str(i) # 345 => "345"
f = s[0:1] + s[0:1] + s[0:1] # 345 => "333"
return [s, f]
def gen_values2(self, i):
s = str(i) # 345 => "345"
l = s[-1:] + s[-1:] + s[-1:] # 345 => "555"
return [s, l]
def populate(self, s, gen_values):
c = s.open_cursor('table:join06', None, None)
for i in range(0, self.nentries):
c.set_key(i)
c.set_value(*gen_values(i))
c.insert()
c.close()
# Common function for testing the most basic functionality
# of joins
def test_join(self):
self.session.create('table:join06',
'columns=(k,v0,v1),key_format=i,value_format=SS')
self.session.create('index:join06:index0','columns=(v0)')
self.session.create('index:join06:index1','columns=(v1)')
self.populate(self.session, self.gen_values)
# TODO: needed?
#self.reopen_conn()
if self.uncommitted:
self.session.begin_transaction('isolation=read-uncommitted')
jc = self.session.open_cursor('join:table:join06', None, None)
c0 = self.session.open_cursor('index:join06:index0', None, None)
c0.set_key('520')
self.assertEquals(0, c0.search())
self.session.join(jc, c0, 'compare=ge')
joinconfig = 'compare=eq'
if self.bloom:
joinconfig += ',strategy=bloom,count=1000'
c1 = self.session.open_cursor('index:join06:index1', None, None)
c1.set_key('555')
self.assertEquals(0, c1.search())
self.session.join(jc, c1, joinconfig)
if self.uncommitted and self.bloom:
# Make sure that read-uncommitted with Bloom is not allowed.
# This is detected on the first next() operation.
msg = '/cannot be used with read-uncommitted/'
self.assertRaisesWithMessage(wiredtiger.WiredTigerError,
lambda: jc.next(), msg)
return
# Changes made in another session may or may not be visible to us,
# depending on the isolation level.
if self.uncommitted:
# isolation level is read-uncommitted, so we will see
# additions deletions made in our other session.
mbr = set(range(525,1000,10)) | set(range(55,100,10)) | set([520])
else:
# default isolation level, so we should see a consistent
# set at the time we begin iteration.
mbr = set(range(520,600)) | set(range(53,60))
altered = False
while jc.next() == 0:
[k] = jc.get_keys()
[v0,v1] = jc.get_values()
#self.tty('GOT: ' + str(k) + ': ' + str(jc.get_values()))
if altered and self.uncommitted:
self.assertEquals(self.gen_values2(k), [v0, v1])
else:
self.assertEquals(self.gen_values(k), [v0, v1])
if not k in mbr:
self.tty('**** ERROR: result ' + str(k) + ' is not in: ' +
str(mbr))
self.assertTrue(k in mbr)
mbr.remove(k)
# In another session, we remove entries for keys ending in 6,
# and add entries for keys ending in 5. Depending on the
# isolation level for the transaction, these changes may or
# may not be visible for the original session.
if not altered:
s = self.conn.open_session(None)
s.begin_transaction(None)
self.populate(s, self.gen_values2)
s.commit_transaction()
s.close()
altered = True
if len(mbr) != 0:
self.tty('**** ERROR: did not see these: ' + str(mbr))
self.assertEquals(0, len(mbr))
jc.close()
c1.close()
c0.close()
if self.uncommitted:
self.session.commit_transaction()
self.session.drop('table:join06')
if __name__ == '__main__':
wttest.run()
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