{{ message }}
forked from oracle/python-cx_Oracle
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathCursor.py
More file actions
457 lines (413 loc) · 19.2 KB
/
Copy pathCursor.py
File metadata and controls
457 lines (413 loc) · 19.2 KB
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
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
#------------------------------------------------------------------------------
# Copyright 2016, 2017, Oracle and/or its affiliates. All rights reserved.
#
# Portions Copyright 2007-2015, Anthony Tuininga. All rights reserved.
#
# Portions Copyright 2001-2007, Computronix (Canada) Ltd., Edmonton, Alberta,
# Canada. All rights reserved.
#------------------------------------------------------------------------------
"""Module for testing cursor objects."""
import cx_Oracle
import decimal
import sys
class TestCursor(BaseTestCase):
def testCreateScrollableCursor(self):
"""test creating a scrollable cursor"""
cursor = self.connection.cursor()
self.assertEqual(cursor.scrollable, False)
cursor = self.connection.cursor(True)
self.assertEqual(cursor.scrollable, True)
cursor = self.connection.cursor(scrollable = True)
self.assertEqual(cursor.scrollable, True)
cursor.scrollable = False
self.assertEqual(cursor.scrollable, False)
def testExecuteNoArgs(self):
"""test executing a statement without any arguments"""
result = self.cursor.execute("begin null; end;")
self.assertEqual(result, None)
def testExecuteNoStatementWithArgs(self):
"""test executing a None statement with bind variables"""
self.assertRaises(cx_Oracle.ProgrammingError, self.cursor.execute,
None, x = 5)
def testExecuteEmptyKeywordArgs(self):
"""test executing a statement with args and empty keyword args"""
simpleVar = self.cursor.var(cx_Oracle.NUMBER)
args = [simpleVar]
kwArgs = {}
result = self.cursor.execute("begin :1 := 25; end;", args, **kwArgs)
self.assertEqual(result, None)
self.assertEqual(simpleVar.getvalue(), 25)
def testExecuteKeywordArgs(self):
"""test executing a statement with keyword arguments"""
simpleVar = self.cursor.var(cx_Oracle.NUMBER)
result = self.cursor.execute("begin :value := 5; end;",
value = simpleVar)
self.assertEqual(result, None)
self.assertEqual(simpleVar.getvalue(), 5)
def testExecuteDictionaryArg(self):
"""test executing a statement with a dictionary argument"""
simpleVar = self.cursor.var(cx_Oracle.NUMBER)
dictArg = { "value" : simpleVar }
result = self.cursor.execute("begin :value := 10; end;", dictArg)
self.assertEqual(result, None)
self.assertEqual(simpleVar.getvalue(), 10)
dictArg = { u"value" : simpleVar }
result = self.cursor.execute("begin :value := 25; end;", dictArg)
self.assertEqual(result, None)
self.assertEqual(simpleVar.getvalue(), 25)
def testExecuteMultipleMethod(self):
"""test executing a statement with both a dict arg and keyword args"""
simpleVar = self.cursor.var(cx_Oracle.NUMBER)
dictArg = { "value" : simpleVar }
self.assertRaises(cx_Oracle.InterfaceError, self.cursor.execute,
"begin :value := 15; end;", dictArg, value = simpleVar)
def testExecuteAndModifyArraySize(self):
"""test executing a statement and then changing the array size"""
self.cursor.execute("select IntCol from TestNumbers")
self.cursor.arraysize = 20
self.assertEqual(len(self.cursor.fetchall()), 10)
def testCallProc(self):
"""test executing a stored procedure"""
var = self.cursor.var(cx_Oracle.NUMBER)
results = self.cursor.callproc("proc_Test", ("hi", 5, var))
self.assertEqual(results, ["hi", 10, 2.0])
def testCallProcNoArgs(self):
"""test executing a stored procedure without any arguments"""
results = self.cursor.callproc(u"proc_TestNoArgs")
self.assertEqual(results, [])
def testCallFunc(self):
"""test executing a stored function"""
results = self.cursor.callfunc(u"func_Test", cx_Oracle.NUMBER,
(u"hi", 5))
self.assertEqual(results, 7)
def testCallFuncNoArgs(self):
"""test executing a stored function without any arguments"""
results = self.cursor.callfunc("func_TestNoArgs", cx_Oracle.NUMBER)
self.assertEqual(results, 712)
def testExecuteManyByName(self):
"""test executing a statement multiple times (named args)"""
self.cursor.execute("truncate table TestTempTable")
rows = [ { u"value" : n } for n in range(250) ]
self.cursor.arraysize = 100
statement = "insert into TestTempTable (IntCol) values (:value)"
self.cursor.executemany(statement, rows)
self.connection.commit()
self.cursor.execute("select count(*) from TestTempTable")
count, = self.cursor.fetchone()
self.assertEqual(count, len(rows))
def testExecuteManyByPosition(self):
"""test executing a statement multiple times (positional args)"""
self.cursor.execute("truncate table TestTempTable")
rows = [ [n] for n in range(230) ]
self.cursor.arraysize = 100
statement = "insert into TestTempTable (IntCol) values (:1)"
self.cursor.executemany(statement, rows)
self.connection.commit()
self.cursor.execute("select count(*) from TestTempTable")
count, = self.cursor.fetchone()
self.assertEqual(count, len(rows))
def testExecuteManyWithPrepare(self):
"""test executing a statement multiple times (with prepare)"""
self.cursor.execute("truncate table TestTempTable")
rows = [ [n] for n in range(225) ]
self.cursor.arraysize = 100
statement = "insert into TestTempTable (IntCol) values (:1)"
self.cursor.prepare(statement)
self.cursor.executemany(None, rows)
self.connection.commit()
self.cursor.execute("select count(*) from TestTempTable")
count, = self.cursor.fetchone()
self.assertEqual(count, len(rows))
def testExecuteManyWithRebind(self):
"""test executing a statement multiple times (with rebind)"""
self.cursor.execute("truncate table TestTempTable")
rows = [ [n] for n in range(235) ]
self.cursor.arraysize = 100
statement = "insert into TestTempTable (IntCol) values (:1)"
self.cursor.executemany(statement, rows[:50])
self.cursor.executemany(statement, rows[50:])
self.connection.commit()
self.cursor.execute("select count(*) from TestTempTable")
count, = self.cursor.fetchone()
self.assertEqual(count, len(rows))
def testExecuteManyWithInputSizesWrong(self):
cursor = self.connection.cursor()
cursor.setinputsizes(cx_Oracle.NUMBER)
data = [[decimal.Decimal("25.8")], [decimal.Decimal("30.0")]]
cursor.executemany("declare t number; begin t := :1; end;", data)
def testExecuteManyWithResize(self):
"""test executing a statement multiple times (with resize)"""
self.cursor.execute("truncate table TestTempTable")
rows = [ ( 1, "First" ),
( 2, "Second" ),
( 3, "Third" ),
( 4, "Fourth" ),
( 5, "Fifth" ),
( 6, "Sixth" ),
( 7, "Seventh and the longest one" ) ]
sql = "insert into TestTempTable (IntCol, StringCol) values (:1, :2)"
self.cursor.executemany(sql, rows)
self.cursor.execute("""
select IntCol, StringCol
from TestTempTable
order by IntCol""")
fetchedRows = self.cursor.fetchall()
self.assertEqual(fetchedRows, rows)
def testExecuteManyWithExecption(self):
"""test executing a statement multiple times (with exception)"""
self.cursor.execute("truncate table TestTempTable")
rows = [ { "value" : n } for n in (1, 2, 3, 2, 5) ]
statement = "insert into TestTempTable (IntCol) values (:value)"
self.assertRaises(cx_Oracle.DatabaseError, self.cursor.executemany,
statement, rows)
self.assertEqual(self.cursor.rowcount, 3)
def testPrepare(self):
"""test preparing a statement and executing it multiple times"""
self.assertEqual(self.cursor.statement, None)
statement = "begin :value := :value + 5; end;"
self.cursor.prepare(statement)
var = self.cursor.var(cx_Oracle.NUMBER)
self.assertEqual(self.cursor.statement, statement)
var.setvalue(0, 2)
self.cursor.execute(None, value = var)
self.assertEqual(var.getvalue(), 7)
self.cursor.execute(None, value = var)
self.assertEqual(var.getvalue(), 12)
self.cursor.execute("begin :value2 := 3; end;", value2 = var)
self.assertEqual(var.getvalue(), 3)
def testExceptionOnClose(self):
"confirm an exception is raised after closing a cursor"
self.cursor.close()
self.assertRaises(cx_Oracle.InterfaceError, self.cursor.execute,
"select 1 from dual")
def testIterators(self):
"""test iterators"""
self.cursor.execute("""
select IntCol
from TestNumbers
where IntCol between 1 and 3
order by IntCol""")
rows = []
for row in self.cursor:
rows.append(row[0])
self.assertEqual(rows, [1, 2, 3])
def testIteratorsInterrupted(self):
"""test iterators (with intermediate execute)"""
self.cursor.execute("truncate table TestTempTable")
self.cursor.execute("""
select IntCol
from TestNumbers
where IntCol between 1 and 3
order by IntCol""")
testIter = iter(self.cursor)
if sys.version_info[0] >= 3:
value, = next(testIter)
else:
value, = testIter.next()
self.cursor.execute("insert into TestTempTable (IntCol) values (1)")
if sys.version_info[0] >= 3:
self.assertRaises(cx_Oracle.InterfaceError, next, testIter)
else:
self.assertRaises(cx_Oracle.InterfaceError, testIter.next)
def testBindNames(self):
"""test that bindnames() works correctly."""
self.assertRaises(cx_Oracle.ProgrammingError, self.cursor.bindnames)
self.cursor.prepare(u"begin null; end;")
self.assertEqual(self.cursor.bindnames(), [])
self.cursor.prepare("begin :retval := :inval + 5; end;")
self.assertEqual(self.cursor.bindnames(), ["RETVAL", "INVAL"])
self.cursor.prepare("begin :retval := :a * :a + :b * :b; end;")
self.assertEqual(self.cursor.bindnames(), ["RETVAL", "A", "B"])
self.cursor.prepare("begin :a := :b + :c + :d + :e + :f + :g + " + \
":h + :i + :j + :k + :l; end;")
self.assertEqual(self.cursor.bindnames(),
["A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L"])
self.cursor.prepare("select :a * :a + :b * :b from dual")
self.assertEqual(self.cursor.bindnames(), ["A", "B"])
def testBadPrepare(self):
"""test that subsequent executes succeed after bad prepare"""
self.assertRaises(cx_Oracle.DatabaseError,
self.cursor.execute,
"begin raise_application_error(-20000, 'this); end;")
self.cursor.execute("begin null; end;")
def testBadExecute(self):
"""test that subsequent fetches fail after bad execute"""
self.assertRaises(cx_Oracle.DatabaseError,
self.cursor.execute, "select y from dual")
self.assertRaises(cx_Oracle.InterfaceError,
self.cursor.fetchall)
def testScrollAbsoluteExceptionAfter(self):
"""test scrolling absolute yields an exception (after result set)"""
cursor = self.connection.cursor(scrollable = True)
cursor.arraysize = self.cursor.arraysize
cursor.execute("""
select NumberCol
from TestNumbers
order by IntCol""")
self.assertRaises(cx_Oracle.DatabaseError, cursor.scroll, 12,
"absolute")
def testScrollAbsoluteInBuffer(self):
"""test scrolling absolute (when in buffers)"""
cursor = self.connection.cursor(scrollable = True)
cursor.arraysize = self.cursor.arraysize
cursor.execute("""
select NumberCol
from TestNumbers
order by IntCol""")
cursor.fetchmany()
self.assertTrue(cursor.arraysize > 1,
"array size must exceed 1 for this test to work correctly")
cursor.scroll(1, mode = "absolute")
row = cursor.fetchone()
self.assertEqual(row[0], 1.25)
self.assertEqual(cursor.rowcount, 1)
def testScrollAbsoluteNotInBuffer(self):
"""test scrolling absolute (when not in buffers)"""
cursor = self.connection.cursor(scrollable = True)
cursor.arraysize = self.cursor.arraysize
cursor.execute("""
select NumberCol
from TestNumbers
order by IntCol""")
cursor.scroll(6, mode = "absolute")
row = cursor.fetchone()
self.assertEqual(row[0], 7.5)
self.assertEqual(cursor.rowcount, 6)
def testScrollFirstInBuffer(self):
"""test scrolling to first row in result set (when in buffers)"""
cursor = self.connection.cursor(scrollable = True)
cursor.arraysize = self.cursor.arraysize
cursor.execute("""
select NumberCol
from TestNumbers
order by IntCol""")
cursor.fetchmany()
cursor.scroll(mode = "first")
row = cursor.fetchone()
self.assertEqual(row[0], 1.25)
self.assertEqual(cursor.rowcount, 1)
def testScrollFirstNotInBuffer(self):
"""test scrolling to first row in result set (when not in buffers)"""
cursor = self.connection.cursor(scrollable = True)
cursor.arraysize = self.cursor.arraysize
cursor.execute("""
select NumberCol
from TestNumbers
order by IntCol""")
cursor.fetchmany()
cursor.fetchmany()
cursor.scroll(mode = "first")
row = cursor.fetchone()
self.assertEqual(row[0], 1.25)
self.assertEqual(cursor.rowcount, 1)
def testScrollLast(self):
"""test scrolling to last row in result set"""
cursor = self.connection.cursor(scrollable = True)
cursor.arraysize = self.cursor.arraysize
cursor.execute("""
select NumberCol
from TestNumbers
order by IntCol""")
cursor.scroll(mode = "last")
row = cursor.fetchone()
self.assertEqual(row[0], 12.5)
self.assertEqual(cursor.rowcount, 10)
def testScrollRelativeExceptionAfter(self):
"""test scrolling relative yields an exception (after result set)"""
cursor = self.connection.cursor(scrollable = True)
cursor.arraysize = self.cursor.arraysize
cursor.execute("""
select NumberCol
from TestNumbers
order by IntCol""")
self.assertRaises(cx_Oracle.DatabaseError, cursor.scroll, 15)
def testScrollRelativeExceptionBefore(self):
"""test scrolling relative yields an exception (before result set)"""
cursor = self.connection.cursor(scrollable = True)
cursor.arraysize = self.cursor.arraysize
cursor.execute("""
select NumberCol
from TestNumbers
order by IntCol""")
self.assertRaises(cx_Oracle.DatabaseError, cursor.scroll, -5)
def testScrollRelativeInBuffer(self):
"""test scrolling relative (when in buffers)"""
cursor = self.connection.cursor(scrollable = True)
cursor.arraysize = self.cursor.arraysize
cursor.execute("""
select NumberCol
from TestNumbers
order by IntCol""")
cursor.fetchmany()
self.assertTrue(cursor.arraysize > 1,
"array size must exceed 1 for this test to work correctly")
cursor.scroll(2 - cursor.rowcount)
row = cursor.fetchone()
self.assertEqual(row[0], 2.5)
self.assertEqual(cursor.rowcount, 2)
def testScrollRelativeNotInBuffer(self):
"""test scrolling relative (when not in buffers)"""
cursor = self.connection.cursor(scrollable = True)
cursor.arraysize = self.cursor.arraysize
cursor.execute("""
select NumberCol
from TestNumbers
order by IntCol""")
cursor.fetchmany()
cursor.fetchmany()
self.assertTrue(cursor.arraysize > 1,
"array size must exceed 2 for this test to work correctly")
cursor.scroll(3 - cursor.rowcount)
row = cursor.fetchone()
self.assertEqual(row[0], 3.75)
self.assertEqual(cursor.rowcount, 3)
def testScrollNoRows(self):
"""test scrolling when there are no rows"""
self.cursor.execute("truncate table TestTempTable")
cursor = self.connection.cursor(scrollable = True)
cursor.execute("select * from TestTempTable")
cursor.scroll(mode = "last")
self.assertEqual(cursor.fetchall(), [])
cursor.scroll(mode = "first")
self.assertEqual(cursor.fetchall(), [])
self.assertRaises(cx_Oracle.DatabaseError, cursor.scroll, 1,
mode = "absolute")
def testScrollDifferingArrayAndFetchSizes(self):
"""test scrolling with differing array sizes and fetch array sizes"""
self.cursor.execute("truncate table TestTempTable")
for i in range(30):
self.cursor.execute("insert into TestTempTable values (:1, null)",
(i + 1,))
for arraySize in range(1, 6):
cursor = self.connection.cursor(scrollable = True)
cursor.arraysize = arraySize
cursor.execute("select IntCol from TestTempTable order by IntCol")
for numRows in range(1, arraySize + 1):
cursor.scroll(15, "absolute")
rows = cursor.fetchmany(numRows)
self.assertEqual(rows[0][0], 15)
self.assertEqual(cursor.rowcount, 15 + numRows - 1)
cursor.scroll(9)
rows = cursor.fetchmany(numRows)
numRowsFetched = len(rows)
self.assertEqual(rows[0][0], 15 + numRows + 8)
self.assertEqual(cursor.rowcount,
15 + numRows + numRowsFetched + 7)
cursor.scroll(-12)
rows = cursor.fetchmany(numRows)
self.assertEqual(rows[0][0], 15 + numRows + numRowsFetched - 5)
self.assertEqual(cursor.rowcount,
15 + numRows + numRowsFetched + numRows - 6)
def testSetInputSizesMultipleMethod(self):
"""test setting input sizes with both positional and keyword args"""
self.assertRaises(cx_Oracle.InterfaceError,
self.cursor.setinputsizes, 5, x = 5)
def testSetInputSizesByPosition(self):
"""test setting input sizes with positional args"""
var = self.cursor.var(cx_Oracle.STRING, 100)
self.cursor.setinputsizes(None, 5, None, 10, None, cx_Oracle.NUMBER)
self.cursor.execute("""
begin
:1 := :2 || to_char(:3) || :4 || to_char(:5) || to_char(:6);
end;""", [var, 'test_', 5, '_second_', 3, 7])
self.assertEqual(var.getvalue(), u"test_5_second_37")
You can’t perform that action at this time.