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Kirill Smelkov
ZODB
Commits
28dd6d89
Commit
28dd6d89
authored
Jul 11, 2005
by
Tim Peters
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Merge rev 33265 from 3.4 branch.
English repairs.
parent
547eb6c5
Changes
2
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2 changed files
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15 additions
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18 deletions
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-18
src/ZODB/tests/testConnectionSavepoint.txt
src/ZODB/tests/testConnectionSavepoint.txt
+5
-6
src/transaction/savepoint.txt
src/transaction/savepoint.txt
+10
-12
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src/ZODB/tests/testConnectionSavepoint.txt
View file @
28dd6d89
...
...
@@ -39,11 +39,11 @@ and abort changes:
>>> root['name']
'bob'
Now, lets look at an application that manages funds for people.
Now, let
'
s look at an application that manages funds for people.
It allows deposits and debits to be entered for multiple people.
It accepts a sequence of entries and generates a sequence of status
messages. For each entry, it applies the change and then validates
the user's account. If the user's account is invalid, we rol
e
back
the user's account. If the user's account is invalid, we rol
l
back
the change for that entry. The success or failure of an entry is
indicated in the output status. First we'll initialize some accounts:
...
...
@@ -60,8 +60,7 @@ Now, we'll define a validation function to validate an account:
... raise ValueError('Overdrawn', name)
And a function to apply entries. If the function fails in some
unexpected way, it rolls back all of it's changes and
prints the error:
unexpected way, it rolls back all of its changes and prints the error:
>>> def apply_entries(entries):
... savepoint = transaction.savepoint()
...
...
@@ -103,7 +102,7 @@ Now let's try applying some entries:
>>> root['sally-balance']
-80.0
If we
give
provide entries that cause an unexpected error:
If we provide entries that cause an unexpected error:
>>> apply_entries([
... ('bob', 10.0),
...
...
src/transaction/savepoint.txt
View file @
28dd6d89
...
...
@@ -24,7 +24,6 @@ support within the transaction system. This data manager is very
simple. It provides flat storage of named immutable values, like strings
and numbers.
>>> import transaction.tests.savepointsample
>>> dm = transaction.tests.savepointsample.SampleSavepointDataManager()
>>> dm['name'] = 'bob'
...
...
@@ -44,11 +43,11 @@ and abort changes:
>>> dm['name']
'bob'
Now, lets look at an application that manages funds for people.
Now, let
'
s look at an application that manages funds for people.
It allows deposits and debits to be entered for multiple people.
It accepts a sequence of entries and generates a sequence of status
messages. For each entry, it applies the change and then validates
the user's account. If the user's account is invalid, we rol
e
back
the user's account. If the user's account is invalid, we rol
l
back
the change for that entry. The success or failure of an entry is
indicated in the output status. First we'll initialize some accounts:
...
...
@@ -65,8 +64,7 @@ Now, we'll define a validation function to validate an account:
... raise ValueError('Overdrawn', name)
And a function to apply entries. If the function fails in some
unexpected way, it rolls back all of it's changes and
prints the error:
unexpected way, it rolls back all of its changes and prints the error:
>>> def apply_entries(entries):
... savepoint = transaction.savepoint()
...
...
@@ -108,7 +106,7 @@ Now let's try applying some entries:
>>> dm['sally-balance']
-80.0
If we
give
provide entries that cause an unexpected error:
If we provide entries that cause an unexpected error:
>>> apply_entries([
... ('bob', 10.0),
...
...
@@ -160,7 +158,7 @@ Once a savepoint has been used, it can't be used again:
...
InvalidSavepointRollbackError
Using a savepoint also invalidates any savepoints that com
e
after it:
Using a savepoint also invalidates any savepoints that com
e
after it:
>>> savepoint1 = transaction.savepoint()
>>> dm['bob-balance'] = 100.0
...
...
@@ -202,8 +200,8 @@ support savepoints:
However, a flag can be passed to the transaction savepoint method to
indicate that databases without savepoint support should be tolerated
until a savepoint is roled back. This allows transactions to proceed
i
s
there are no reasons to roll back:
until a savepoint is rol
l
ed back. This allows transactions to proceed
i
f
there are no reasons to roll back:
>>> dm_no_sp['name'] = 'sally'
>>> savepoint = transaction.savepoint(1)
...
...
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