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#!/usr/bin/env python
#
# Public Domain 2014-2019 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
# test_collator.py
# Test indices using a custom extractor and collator.
class test_collator(wttest.WiredTigerTestCase):
"""
Test indices with a custom extractor to create an index,
with our own collator.
Our set of rows looks like a multiplication table:
row '0': '0,0,0,0'
row '1': '0,1,2,3'
row '2': '0,2,4,6'
with the twist that entries are mod 100. So, looking further:
row '40': '0,40,80,20'
Each column is placed into its own index. Our collator reverses
the values.
"""
nentries = 100
nindices = 4
def conn_extensions(self, extlist):
extlist.skip_if_missing = True
extlist.extension('extractors', 'csv')
extlist.extension('collators', 'revint')
def create_indices(self):
# Create self.nindices index files, each with a column from the CSV
for i in range(0, self.nindices):
si = str(i)
self.session.create('index:collator:x' + si,
'key_format=i,columns=(key),' +
'collator=revint,' +
'extractor=csv,app_metadata={"format" : "i",' +
'"field" : "' + si + '"}')
def drop_indices(self):
for i in range(0, self.nindices):
self.session.drop("index:collator:x" + str(i))
def csv(self, s, i):
return s.split(',')[i]
def expected_main_value(self, i):
return ','.join([str((i*j)%100) for j in range(0, self.nindices)])
# We split the population into two phases
# (in anticipation of future tests that create
# indices between the two population steps).
def populate(self):
cursor = self.session.open_cursor('table:collator', None, None)
for i in range(0, self.nentries):
cursor[i] = self.expected_main_value(i)
cursor.close()
def check_entries(self):
cursor = self.session.open_cursor('table:collator', None, None)
icursor = []
for i in range(0, self.nindices):
icursor.append(self.session.open_cursor('index:collator:x' + str(i),
None, None))
i = 0
for primkey, value in cursor:
# Check main table
expect = self.expected_main_value(i)
self.assertEqual(i, primkey)
self.assertEqual(value, expect)
for idx in range(0, self.nindices):
c = icursor[idx]
indexkey = (i*idx)%100
c.set_key(indexkey)
self.assertEqual(c.search(), 0)
value = c.get_value()
key = c.get_key()
while value != expect and key == indexkey and \
self.csv(value, idx) == self.csv(expect, idx):
self.assertEqual(0, c.next())
value = c.get_value()
key = c.get_key()
self.assertEqual(value, expect)
i += 1
cursor.close()
self.assertEqual(self.nentries, i)
for i in range(0, self.nindices):
c = icursor[i]
c.reset()
expected = set(range(0, self.nentries))
for key, val in c:
primkey = int(val.split(',')[1])
expected.remove(primkey)
self.assertEquals(0, len(expected))
c.close()
def test_index(self):
self.session.create("table:collator", "key_format=i,value_format=S,"
"columns=(primarykey,value)")
self.create_indices()
self.populate()
self.check_entries()
# Drop and recreate all indices, everything should be there.
self.drop_indices()
self.create_indices()
self.check_entries()
if __name__ == '__main__':
wttest.run()
|
