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#!/usr/bin/env python
#
# Public Domain 2014-present 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 wiredtiger, wttest, exceptions
from wtdataset import SimpleDataSet, ComplexDataSet, ComplexLSMDataSet
from wtscenario import filter_scenarios, make_scenarios
# Test cursor comparisons.
class test_cursor_comparison(wttest.WiredTigerTestCase):
name = 'test_compare'
types = [
('file', dict(type='file:', lsm=False, dataset=SimpleDataSet)),
('lsm', dict(type='table:', lsm=True, dataset=ComplexLSMDataSet)),
('table', dict(type='table:', lsm=False, dataset=ComplexDataSet))
]
keyfmt = [
('integer', dict(keyfmt='i')),
('recno', dict(keyfmt='r')),
('string', dict(keyfmt='S'))
]
# Skip record number keys with LSM.
scenarios = filter_scenarios(make_scenarios(types, keyfmt),
lambda name, d: not (d['lsm'] and d['keyfmt'] == 'r'))
def test_cursor_comparison(self):
uri = self.type + 'compare'
uriX = self.type + 'compareX'
# Build the object.
ds = self.dataset(self, uri, 100, key_format=self.keyfmt)
dsX = self.dataset(self, uriX, 100, key_format=self.keyfmt)
ds.populate()
dsX.populate()
if self.type == 'file:':
ix0_0 = None
ix0_1 = None
ix1_0 = None
ixX_0 = None
else:
ix0_0 = self.session.open_cursor(ds.index_name(0), None)
ix0_1 = self.session.open_cursor(ds.index_name(0), None)
ix1_0 = self.session.open_cursor(ds.index_name(1), None)
ixX_0 = self.session.open_cursor(dsX.index_name(0), None)
ix0_0.next()
ix0_1.next()
ix1_0.next()
ixX_0.next()
c1 = self.session.open_cursor(uri, None)
c2 = self.session.open_cursor(uri, None)
# Confirm failure unless the keys are set.
msg = '/requires key be set/'
self.assertRaisesWithMessage(
wiredtiger.WiredTigerError, lambda: c1.compare(c2), msg)
self.assertRaisesWithMessage(
wiredtiger.WiredTigerError, lambda: c2.compare(c1), msg)
# Test cursors before they're positioned.
c1.set_key(ds.key(10))
c2.set_key(ds.key(20))
self.assertGreater(c2.compare(c1), 0)
self.assertLess(c1.compare(c2), 0)
c2.set_key(ds.key(10))
self.assertEqual(c1.compare(c2), 0)
self.assertEqual(c2.compare(c1), 0)
# Confirm failure for different objects.
cX = self.session.open_cursor(uriX, None)
cX.set_key(dsX.key(10))
msg = '/must reference the same object/'
self.assertRaisesWithMessage(
wiredtiger.WiredTigerError, lambda: cX.compare(c1), msg)
msg = '/wt_cursor.* is None/'
self.assertRaisesHavingMessage(
exceptions.RuntimeError, lambda: cX.compare(None), msg)
if ix0_0 != None:
self.assertEqual(ix0_0.compare(ix0_1), 0)
ix0_1.reset()
ix0_1.prev()
self.assertLess(ix0_0.compare(ix0_1), 0)
self.assertGreater(ix0_1.compare(ix0_0), 0)
# Main table vs. index not allowed
msg = '/must reference the same object/'
self.assertRaisesWithMessage(
wiredtiger.WiredTigerError, lambda: c1.compare(ix0_0), msg)
# Two unrelated indices not allowed
self.assertRaisesWithMessage(
wiredtiger.WiredTigerError, lambda: ixX_0.compare(ix0_0), msg)
# Two different indices from same table not allowed
self.assertRaisesWithMessage(
wiredtiger.WiredTigerError, lambda: ix0_0.compare(ix1_0), msg)
# Test cursors after they're positioned (shouldn't matter for compare).
c1.set_key(ds.key(10))
self.assertEqual(c1.search(), 0)
c2.set_key(ds.key(20))
self.assertEqual(c2.search(), 0)
self.assertGreater(c2.compare(c1), 0)
self.assertLess(c1.compare(c2), 0)
c2.set_key(ds.key(10))
self.assertEqual(c2.search(), 0)
self.assertEqual(c1.compare(c2), 0)
self.assertEqual(c2.compare(c1), 0)
# Confirm failure for different objects.
cX = self.session.open_cursor(uriX, None)
cX.set_key(dsX.key(10))
self.assertEqual(cX.search(), 0)
msg = '/must reference the same object/'
self.assertRaisesWithMessage(
wiredtiger.WiredTigerError, lambda: cX.compare(c1), msg)
def test_cursor_equality(self):
uri = self.type + 'equality'
uriX = self.type + 'compareX'
# Build the object.
ds = self.dataset(self, uri, 100, key_format=self.keyfmt)
dsX = self.dataset(self, uriX, 100, key_format=self.keyfmt)
ds.populate()
dsX.populate()
if self.type == 'file:':
ix0_0 = None
ix0_1 = None
ix1_0 = None
ixX_0 = None
else:
ix0_0 = self.session.open_cursor(ds.index_name(0), None)
ix0_1 = self.session.open_cursor(ds.index_name(0), None)
ix1_0 = self.session.open_cursor(ds.index_name(1), None)
ixX_0 = self.session.open_cursor(dsX.index_name(0), None)
ix0_0.next()
ix0_1.next()
ix1_0.next()
ixX_0.next()
c1 = self.session.open_cursor(uri, None)
c2 = self.session.open_cursor(uri, None)
# Confirm failure unless the keys are set.
msg = '/requires key be set/'
self.assertRaisesWithMessage(
wiredtiger.WiredTigerError, lambda: c1.equals(c2), msg)
self.assertRaisesWithMessage(
wiredtiger.WiredTigerError, lambda: c2.equals(c1), msg)
# Test cursors before they're positioned.
c1.set_key(ds.key(10))
c2.set_key(ds.key(20))
self.assertFalse(c1.equals(c2))
self.assertFalse(c2.equals(c1))
c2.set_key(ds.key(10))
self.assertTrue(c1.equals(c2))
self.assertTrue(c2.equals(c1))
# Confirm failure for different objects.
cX = self.session.open_cursor(uriX, None)
cX.set_key(dsX.key(10))
msg = '/must reference the same object/'
self.assertRaisesWithMessage(
wiredtiger.WiredTigerError, lambda: cX.equals(c1), msg)
msg = '/wt_cursor.* is None/'
self.assertRaisesHavingMessage(
exceptions.RuntimeError, lambda: cX.equals(None), msg)
if ix0_0 != None:
self.assertTrue(ix0_0.equals(ix0_1))
ix0_1.reset()
ix0_1.prev()
self.assertFalse(ix0_0.equals(ix0_1))
# Main table vs. index not allowed
msg = '/must reference the same object/'
self.assertRaisesWithMessage(
wiredtiger.WiredTigerError, lambda: c1.equals(ix0_0), msg)
# Two unrelated indices not allowed
self.assertRaisesWithMessage(
wiredtiger.WiredTigerError, lambda: ixX_0.equals(ix0_0), msg)
# Two different indices from same table not allowed
self.assertRaisesWithMessage(
wiredtiger.WiredTigerError, lambda: ix0_0.equals(ix1_0), msg)
# Test cursors after they're positioned (internally, it's a different
# search path if keys are positioned in the tree).
c1.set_key(ds.key(10))
self.assertEqual(c1.search(), 0)
c2.set_key(ds.key(20))
self.assertEqual(c2.search(), 0)
self.assertFalse(c1.equals(c2))
self.assertFalse(c2.equals(c1))
c2.set_key(ds.key(10))
self.assertEqual(c2.search(), 0)
self.assertTrue(c1.equals(c2))
self.assertTrue(c2.equals(c1))
# Confirm failure for different objects.
cX = self.session.open_cursor(uriX, None)
cX.set_key(dsX.key(10))
self.assertEqual(cX.search(), 0)
msg = '/must reference the same object/'
self.assertRaisesWithMessage(
wiredtiger.WiredTigerError, lambda: cX.equals(c1), msg)
if __name__ == '__main__':
wttest.run()
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