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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 make_scenarios
# test_schema05.py
# Test indices using a custom extractor.
class test_schema05(wttest.WiredTigerTestCase):
"""
Test indices with a custom extractor.
This test is the same as test_schema04, except that rows
are comma separated values (CSV) and we use a custom
extractor to pull out the index keys.
Our set of rows looks like a multiplication table:
row '0': '0,0,0,0,0,0'
row '1': '0,1,2,3,4,5'
row '2': '0,2,4,6,8,10'
with the twist that entries are mod 100. So, looking further:
row '31': '0,31,62,93,24,55'
Each column is placed into its own index. The mod twist,
as well as the 0th column, guarantees we'll have some duplicates.
"""
nentries = 1000
nindices = 6
scenarios = make_scenarios([
('index-before', { 'create_index' : 0 }),
('index-during', { 'create_index' : 1 }),
('index-after', { 'create_index' : 2 }),
])
# Return the wiredtiger_open extension argument for a shared library.
def extensionArg(self, exts):
extfiles = []
for ext in exts:
(dirname, name, libname) = ext
if name != None and name != 'none':
testdir = os.path.dirname(__file__)
extdir = os.path.join(run.wt_builddir, 'ext', dirname)
extfile = os.path.join(
extdir, name, '.libs', 'libwiredtiger_' + libname + '.so')
if not os.path.exists(extfile):
self.skipTest('extension "' + extfile + '" not built')
if not extfile in extfiles:
extfiles.append(extfile)
if len(extfiles) == 0:
return ''
else:
return ',extensions=["' + '","'.join(extfiles) + '"]'
# Override WiredTigerTestCase, we have extensions.
def setUpConnectionOpen(self, dir):
extarg = self.extensionArg([('extractors', 'csv', 'csv_extractor')])
connarg = 'create,error_prefix="{0}: ",{1}'.format(
self.shortid(), extarg)
conn = self.wiredtiger_open(dir, connarg)
self.pr(`conn`)
return conn
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:schema05:x' + si,
'key_format=S,columns=(key),'
'extractor=csv,app_metadata={"format" : "S",' +
'"field" : "' + si + '"}')
def drop_indices(self):
for i in range(0, self.nindices):
self.session.drop("index:schema05:x" + str(i))
def csv(self, s, i):
return s.split(',')[i]
# We split the population into two phases
# (in anticipation of future tests that create
# indices between the two population steps).
def populate(self, phase):
cursor = self.session.open_cursor('table:schema05', None, None)
if phase == 0:
range_from = 0
range_to = self.nentries / 2
elif phase == 1:
range_from = self.nentries / 2
range_to = self.nentries - 5
else:
range_from = self.nentries - 5
range_to = self.nentries
for i in range(range_from, range_to):
# e.g. element 31 is '0,31,62,93,24,55'
cursor[i] = ','.join([str((i*j)%100) for j in
range(0, self.nindices)])
cursor.close()
def check_entries(self):
cursor = self.session.open_cursor('table:schema05', None, None)
icursor = []
for i in range(0, self.nindices):
icursor.append(self.session.open_cursor('index:schema05:x' + str(i),
None, None))
i = 0
for primkey, value in cursor:
# Check main table
expect = ','.join([str((i*j)%100) for j in range(0, self.nindices)])
self.assertEqual(i, primkey)
self.assertEqual(value, expect)
for idx in range(0, self.nindices):
c = icursor[idx]
indexkey = str((i*idx)%100)
c.set_key(indexkey)
self.assertEqual(c.search(), 0)
value = c.get_value()
while value != expect and \
self.csv(value, idx) == self.csv(expect, idx):
c.next()
value = c.get_value()
self.assertEqual(value, expect)
i += 1
self.assertEqual(self.nentries, i)
for i in range(0, self.nindices):
icursor[i].close()
def test_index(self):
self.session.create("table:schema05", "key_format=i,value_format=S,"
"columns=(primarykey,value)")
if self.create_index == 0:
self.create_indices()
self.populate(0)
if self.create_index == 1:
self.create_indices()
self.populate(1)
if self.create_index == 2:
self.create_indices()
self.populate(2)
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()
|
