subject:"\[Zope\-dev\] FW\: Zope optimistic transactions."

[Zope-dev] FW: Zope optimistic transactions.

2001-11-30 Thread Clark OBrien




  -Original Message-
 From: Clark OBrien  
 Sent: Monday, November 05, 2001 7:14 AM
 To:   '[EMAIL PROTECTED]'; '[EMAIL PROTECTED]'
 Cc:   '[EMAIL PROTECTED]'
 Subject:  Zope  optimistic transactions.
 
 
 Chris,
 I set up a test harness to exercise zopes optimistic transaction
 management.
 My test immediatly caused a ZODB exception.
 
 I am running zope 2.42. on win 2k, the scripts are attached.
 Results below:
 
 As you recall I posed the following question:
 
 What if you had a directory structure like:
 Folder1
 Folder-2
Folder-3
   ...
 ..
 Folder-n
 Each folder had an attribute foo and there were two scripts, script1 and
 script2. 
 script1 modified foo on one Folder only while script2 traversed all the
 folders modifying the attribute foo on each one of them.
 Would the script2 ever commit while the fist while script1 was
 continuously called. This is interesting because a call to  script2 would
 never finish before several calls to  script1 finished.
 
 I set up a simple test with only 10 folders. I then wrote the script below
 changeLevel2 that is my scri1 above and changeFolders that is my script2
 above.
 I ran changeLevel2 in a loop using the following code:
 script
 ---
 import urllib
 params = urllib.urlencode({'theText': 'Vitamin D'})
 while 1:
  f = urllib.urlopen(http://localhost:8080/Test/changeLevel2?%s; % params)
  print f.read()
 -script---
 -
 
 
 I then ran the script changeFolders from my browsers.
 The result was the following error message:
 
 
 ZODB.POSException.ConflictError
 
 Sorry, a site error occurred.
 
 Traceback (innermost last):
   File C:\zope\lib\python\ZPublisher\Publish.py, line 223, in
 publish_module
   File C:\zope\lib\python\ZPublisher\Publish.py, line 200, in publish
   File C:\zope\lib\python\ZPublisher\Publish.py, line 200, in publish
   File C:\zope\lib\python\ZPublisher\Publish.py, line 200, in publish
   File C:\zope\lib\python\ZPublisher\Publish.py, line 195, in publish
 --
 
 
 
  scripts.txt 


-changeFolder 
--
#changeFolder
#params list:  theFolder,theText

theFolder.manage_changeProperties({'foo':theText})

--end 
changeFolder---




---changeFolders--
#changeFolders
#Paramater list: myString
# this method changes the attribute foo on several folders.


newFolder = context.getChild(TestFolder )
newFolder.manage_changeProperties({'foo':myString})
import string 

for i in range(1,10):
 newFolder = newFolder.getChild(TestFolder )
 for i in range(1,10):
  # lets do something expansive
  #for j in range(1,100):
   #string.find(its a great day to code python,day)
  newFolder.manage_changeProperties({'foo':myString})


return all properties changed
--end 
changeFolders

-changeLevel2
#changeLevel2
#paramater list: theText
theFolder = context.getChild(TestFolder )
context.changeFolder(theFolder,theText)
return 'ok'
-end 
changeLevel2




-createFolders---
temp = context.manage_addFolder('TestFolder','TestFolder')
newFolder = context.getChild(TestFolder )
newFolder.manage_addProperty(foo,this is a test string, string)

for i in range(1,10):
 newFolder.manage_addFolder(TestFolder,TestFolder)
 newFolder = newFolder.getChild(TestFolder )
 newFolder.manage_addProperty(foo,this is a test string, string)
end createFolders 
---

-getChild---
#getChild
#param list: child


getChild: Utility function

Returns ObjectManagerItem whose ID matches child parameter.
Context must be ObjectManager.

for (oid, obj) in context.objectItems():
if oid == child:
return obj
else:
return None
end getChild 
-

makeNewFolder-
#makeNewFolder
#param list: root

root.manage_addFolder('TestFolder','TestFolder')
root.manage_addProperty('foo','The world is round only to those who know

Re: [Zope-dev] FW: Zope optimistic transactions.

2001-11-30 Thread Chris McDonough

There won't be any more discussion about this issue from me.

- C

- Original Message -
From: Clark OBrien [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Friday, November 30, 2001 12:48 PM
Subject: [Zope-dev] FW: Zope  optimistic transactions.

   -Original Message-
  From: Clark OBrien
  Sent: Monday, November 05, 2001 7:14 AM
  To: '[EMAIL PROTECTED]'; '[EMAIL PROTECTED]'
  Cc: '[EMAIL PROTECTED]'
  Subject: Zope  optimistic transactions.

  Chris,
  I set up a test harness to exercise zopes optimistic transaction
  management.
  My test immediatly caused a ZODB exception.

  I am running zope 2.42. on win 2k, the scripts are attached.
  Results below:

  As you recall I posed the following question:

  What if you had a directory structure like:
  Folder1
  Folder-2
 Folder-3
...
  ..
  Folder-n
  Each folder had an attribute foo and there were two scripts,
script1 and
  script2.
  script1 modified foo on one Folder only while script2 traversed
all the
  folders modifying the attribute foo on each one of them.
  Would the script2 ever commit while the fist while script1 was
  continuously called. This is interesting because a call to
script2 would
  never finish before several calls to  script1 finished.

  I set up a simple test with only 10 folders. I then wrote the
script below
  changeLevel2 that is my scri1 above and changeFolders that is my
script2
  above.
  I ran changeLevel2 in a loop using the following code:

 script--
--
  ---
  import urllib
  params = urllib.urlencode({'theText': 'Vitamin D'})
  while 1:
   f = urllib.urlopen(http://localhost:8080/Test/changeLevel2?%s; %
params)
   print f.read()

 -script-
--
  -

  I then ran the script changeFolders from my browsers.
  The result was the following error message:

  ZODB.POSException.ConflictError

  Sorry, a site error occurred.

  Traceback (innermost last):
File C:\zope\lib\python\ZPublisher\Publish.py, line 223, in
  publish_module
File C:\zope\lib\python\ZPublisher\Publish.py, line 200, in
publish
File C:\zope\lib\python\ZPublisher\Publish.py, line 200, in
publish
File C:\zope\lib\python\ZPublisher\Publish.py, line 200, in
publish
File C:\zope\lib\python\ZPublisher\Publish.py, line 195, in
publish
  --

   scripts.txt

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Re: [Zope-dev] FW: Zope optimistic transactions.

2001-11-30 Thread seb bacon


Dude, it's not a bug.  You're *meant* to get a ConflictError exception 
when writes conflict.  That signals the publisher to retry.

Search on zope.org for conflict resolution.

Regards,

seb

* Clark O'Brien [EMAIL PROTECTED] [011130 18:05]:
 That was not the point dude. Your cowardly call for a 
 response from the intellectual prostitutes on this
 list leaves me uninterested in anything you may have
 to say.
Over and Out 
   Clark
 
 
 
 
 --- Chris McDonough [EMAIL PROTECTED] wrote:
  There won't be any more discussion about this issue
  from me.
  
  - C
  
  
  - Original Message -
  From: Clark OBrien
  [EMAIL PROTECTED]
  To: [EMAIL PROTECTED]
  Sent: Friday, November 30, 2001 12:48 PM
  Subject: [Zope-dev] FW: Zope  optimistic
  transactions.
  
  
  
  
 -Original Message-
From: Clark OBrien
Sent: Monday, November 05, 2001 7:14 AM
To: '[EMAIL PROTECTED]'; '[EMAIL PROTECTED]'
Cc: '[EMAIL PROTECTED]'
Subject: Zope  optimistic transactions.
   
   
Chris,
I set up a test harness to exercise zopes
  optimistic transaction
management.
My test immediatly caused a ZODB exception.
   
I am running zope 2.42. on win 2k, the scripts
  are attached.
Results below:
   
As you recall I posed the following question:
   
What if you had a directory structure like:
Folder1
Folder-2
   Folder-3
  ...
..
Folder-n
Each folder had an attribute foo and there were
  two scripts,
  script1 and
script2.
script1 modified foo on one Folder only while
  script2 traversed
  all the
folders modifying the attribute foo on each one
  of them.
Would the script2 ever commit while the fist
  while script1 was
continuously called. This is interesting because
  a call to
  script2 would
never finish before several calls to  script1
  finished.
   
I set up a simple test with only 10 folders. I
  then wrote the
  script below
changeLevel2 that is my scri1 above and
  changeFolders that is my
  script2
above.
I ran changeLevel2 in a loop using the following
  code:
  
  
 
 script--
  --
---
import urllib
params = urllib.urlencode({'theText': 'Vitamin
  D'})
while 1:
 f =
 
 urllib.urlopen(http://localhost:8080/Test/changeLevel2?%s;
  %
  params)
 print f.read()
  
  
 
 -script-
  --
-
   
   
I then ran the script changeFolders from my
  browsers.
The result was the following error message:
   
   
 
 
ZODB.POSException.ConflictError
   
Sorry, a site error occurred.
   
Traceback (innermost last):
  File C:zopelibpythonZPublisherPublish.py,
  line 223, in
publish_module
  File C:zopelibpythonZPublisherPublish.py,
  line 200, in
  publish
  File C:zopelibpythonZPublisherPublish.py,
  line 200, in
  publish
  File C:zopelibpythonZPublisherPublish.py,
  line 200, in
  publish
  File C:zopelibpythonZPublisherPublish.py,
  line 195, in
  publish
   
 
 --
   
   
   
 scripts.txt
  
  
  
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-- 

   [] j a m k i t 
   
seb bacon
T:  020 7749 7218
F:  020 7739 8683
M:  07968 301 336
W: www.jamkit.com 

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Re: [Zope-dev] FW: Zope optimistic transactions.

2001-11-30 Thread seb bacon


He he, Another classic Withers-style measured response ;-)  Easy on
those flames, dude...Everyone move along now, there's nothing to see
here... 

seb

* Chris Withers [EMAIL PROTECTED] [011130 18:19]:
 Clark O'Brien wrote:
  
  That was not the point dude. Your cowardly call for a
  response from the intellectual prostitutes on this
  list leaves me uninterested in anything you may have
  to say.
 
 Excuse me, what the FUCK is your problem 'dude'?
 
 You obviously have no fucking clue. Kindly piss off and grow up.
 
 That's about the sum total of anything useful I can say in response to your
 postings so far...
 
 Chris
 
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-- 

   [] j a m k i t 
   
seb bacon
T:  020 7749 7218
F:  020 7739 8683
M:  07968 301 336
W: www.jamkit.com 

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Re: [Zope-dev] FW: Zope optimistic transactions.

2001-11-30 Thread Chris Withers


seb bacon wrote:
 
 He he, Another classic Withers-style measured response ;-)  

*vbg*

Let him justify his space in my inbox ;-)

Chris

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[Zope-dev] FW: Zope optimistic transactions.

Re: [Zope-dev] FW: Zope optimistic transactions.

Re: [Zope-dev] FW: Zope optimistic transactions.

Re: [Zope-dev] FW: Zope optimistic transactions.

Re: [Zope-dev] FW: Zope optimistic transactions.

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