[SqueakDBX] Re: Connection Pool for Glorp

John Toohey jt at parspro.com
Tue Mar 30 14:04:13 UTC 2010


Got them, I've published the first release of the connection pool, take a
look and let me know if I need to change or fix anything. I have a few more
features to add to it, but it should be stable, as is.

On Tue, Mar 30, 2010 at 06:45, Mariano Martinez Peck
<marianopeck at gmail.com>wrote:

> Here they are the changes we talked yesterday:
>
> GlorpDriverSqueakDBX-MarianoMartinezPeck.8
> Glorp-MarianoMartinezPeck.53
>
> Cheers
>
> Mariano
>
>
> On Mon, Mar 29, 2010 at 4:21 PM, Mariano Martinez Peck <
> marianopeck at gmail.com> wrote:
>
>> I am at #pharo-project
>>
>> I am not sure which would be the better solution , thus. But we can
>> discuss.
>>
>> cheers
>>
>> mariano
>>
>>
>> On Mon, Mar 29, 2010 at 1:59 PM, John Toohey <jt at parspro.com> wrote:
>>
>>> Hey,
>>> Missed you yesterday, so let me know when you'll be around again. The
>>> remaining issue with the connection pool, is that I am pooling only
>>> DBXConnection objects, but perhaps I should be pooling DatabaseDriver
>>> objects. I'd prefer not to use the driver at all, but I know thats part of
>>> the DBX re-factoring that you did. Its really just that issue that I want to
>>> discuss.
>>>
>>>
>>> On Sun, Mar 28, 2010 at 17:33, Mariano Martinez Peck <
>>> marianopeck at gmail.com> wrote:
>>>
>>>> I am in #pharo-project under MarianoPeck...but for no more than one hour
>>>> :)
>>>>
>>>> http://webchat.freenode.net/?channels=pharo-project
>>>>
>>>> Cheers
>>>>
>>>> Mariano
>>>>
>>>>
>>>> On Sun, Mar 28, 2010 at 1:55 PM, John Toohey <jt at parspro.com> wrote:
>>>>
>>>>> Hey,
>>>>> Just wondering if you are around for a quick chat on IRC/Skype/Jabber.
>>>>> Dealing with some funny stuff here with the handing of the DBXConnection is
>>>>> the driver.
>>>>>
>>>>>
>>>>> On Sat, Mar 27, 2010 at 13:26, John Toohey <jt at parspro.com> wrote:
>>>>>
>>>>>> Great, I just want to make sure the ConnectionPool cleans up properly,
>>>>>> before returning the connection. Making good progress with the pool, at
>>>>>> least for reading. Lose the connection, when I do an insert or update
>>>>>> though, so need to track if that is happening in the Driver or my code.
>>>>>>
>>>>>>
>>>>>> On Sat, Mar 27, 2010 at 12:20, Mariano Martinez Peck <
>>>>>> marianopeck at gmail.com> wrote:
>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On Sat, Mar 27, 2010 at 1:04 PM, John Toohey <johnptoohey at gmail.com>wrote:
>>>>>>>
>>>>>>>> Is there a way to see if the DBXConnection is in the middle of a
>>>>>>>> transaction? If I am releasing a connection, I'd like to rollback if a
>>>>>>>> transaction is open.
>>>>>>>>
>>>>>>>>
>>>>>>> I answer you in SqueakDBX so that not to make noise in Glorp.
>>>>>>>
>>>>>>> No, there is no way right now, but it can be easily added (I think).
>>>>>>> You can add a boolean variable hasTransactionOpened to DBXConnection,
>>>>>>> initializated in false.
>>>>>>> Then, then calling DBXConnection >> startTransaction     you set that
>>>>>>> to true.
>>>>>>> Then, in messages commit, rollback you put that to false.
>>>>>>> Then in messsages finalize, close, and maybe some other place, you
>>>>>>> ask for the value, if it is true, then you rallback and put variable to
>>>>>>> false
>>>>>>>
>>>>>>> Of course we would need to write tests for that.
>>>>>>>
>>>>>>> I can give it a try this weekend.
>>>>>>>
>>>>>>> What do you think ?
>>>>>>>
>>>>>>> Cheers
>>>>>>>
>>>>>>> Mariano
>>>>>>>
>>>>>>>
>>>>>>>>
>>>>>>>> On Sat, Mar 27, 2010 at 10:02, Mariano Martinez Peck <
>>>>>>>> marianopeck at gmail.com> wrote:
>>>>>>>>
>>>>>>>>> Wait....let's calm down....too much misunderstands here.
>>>>>>>>>
>>>>>>>>> Glorp is maintained and developed in VW. There is a port to squeak
>>>>>>>>> from 2 years old or more. Then, we took that version and did several
>>>>>>>>> refactors to Glorp so that it uses an abstract DatabaseDriver. This only
>>>>>>>>> affects SqueakDatabaseAccessor. We called that GlorpDBX.
>>>>>>>>>
>>>>>>>>> Diogenes: don't worry. John is aware of GlorpDBX, what it is, how
>>>>>>>>> to install, etc. Check SqueakDBX mailing list. He even posted in OpenDBX
>>>>>>>>> mailing list ;)
>>>>>>>>>
>>>>>>>>> Now....regarding the Connection Pool, you have different things:
>>>>>>>>>
>>>>>>>>> - The package Alan told you about Seaside package. He was talking
>>>>>>>>> about the one that is in VW public store. To look at it, you should take a
>>>>>>>>> VW, go to store and look at it. And if you like it, I don't know how, export
>>>>>>>>> it and load in pharo.
>>>>>>>>> - There is a Seaside package in squeaksource, which is not the
>>>>>>>>> same, I think it has some kind of connection pool but I am not sure. Maybe
>>>>>>>>> Keithy did it.
>>>>>>>>> - There is a connection pool that Ramón León did some time ago.
>>>>>>>>> Check
>>>>>>>>>
>>>>>>>>> http://onsmalltalk.com/making-a-connection-pool-for-glorp-in-seaside
>>>>>>>>> - There is a connetion pool Esteban Lorenzano did directly for
>>>>>>>>> GlorpDBX
>>>>>>>>>
>>>>>>>>> Finally, if you plan to do a connection pool for GlorpDBX you have
>>>>>>>>> to possibilities:
>>>>>>>>> - be hardcoded to the SqueakDBX driver and use directly
>>>>>>>>> DBXConnection objects
>>>>>>>>> - not be hardcoded to SqueakDBX driver but use DatabaseDriver or
>>>>>>>>> DatabaseDriver >> connection instead. I am not sure if this is possible. But
>>>>>>>>> having a connection pool for Glorp, not hardcoding with the connection class
>>>>>>>>> would be cool.
>>>>>>>>>
>>>>>>>>> Cheers
>>>>>>>>>
>>>>>>>>> Mariano
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On Fri, Mar 26, 2010 at 5:53 PM, John Toohey <
>>>>>>>>> johnptoohey at gmail.com> wrote:
>>>>>>>>>
>>>>>>>>>> Hang on, this is exactly what I load :-
>>>>>>>>>>
>>>>>>>>>> Gofer new
>>>>>>>>>> squeaksource: 'MetacelloRepository';
>>>>>>>>>>  package: 'ConfigurationOfGlorpDBX';
>>>>>>>>>>    load.
>>>>>>>>>> ((Smalltalk at: #ConfigurationOfGlorpDBX) project version: '1.0')
>>>>>>>>>> load.
>>>>>>>>>>
>>>>>>>>>> I need to get used to calling it GlorpDBX :-)
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> On Fri, Mar 26, 2010 at 16:37, Diogenes Moreira <
>>>>>>>>>> diogenes.moreira at gmail.com> wrote:
>>>>>>>>>>
>>>>>>>>>>> Oki, please get the Glorp Package from Squeak DBX Project.. this
>>>>>>>>>>> package have change to adapt DBAccessor to SqueakDBX classes, an remove
>>>>>>>>>>> hiddens "IF" in the Squeak Glorp Version..
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> Best Regards..
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> On Fri, Mar 26, 2010 at 5:34 PM, John Toohey <
>>>>>>>>>>> johnptoohey at gmail.com> wrote:
>>>>>>>>>>>
>>>>>>>>>>>> I'm using SqueakDBX on Pharo RC3.
>>>>>>>>>>>>
>>>>>>>>>>>> On Fri, Mar 26, 2010 at 16:32, Diogenes Moreira <
>>>>>>>>>>>> diogenes.moreira at gmail.com> wrote:
>>>>>>>>>>>>
>>>>>>>>>>>>> from glorp or squeakdbx project....??
>>>>>>>>>>>>>
>>>>>>>>>>>>> take Care.
>>>>>>>>>>>>> The SqueakDBX version has a couple of refactorings and
>>>>>>>>>>>>> modifications to adapt to different platforms.
>>>>>>>>>>>>>
>>>>>>>>>>>>> the detail is on the web squeakdbx www.squeakdbx.org
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> an other question..? do you using pharo or squeak ???
>>>>>>>>>>>>>
>>>>>>>>>>>>> Best Regards..
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>> On Fri, Mar 26, 2010 at 5:26 PM, John Toohey <
>>>>>>>>>>>>> johnptoohey at gmail.com> wrote:
>>>>>>>>>>>>>
>>>>>>>>>>>>>> I took the one from squeaksource, latest update was Feb 22
>>>>>>>>>>>>>> 2010.  Where do I find the one you are looking at?
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> On Fri, Mar 26, 2010 at 16:20, Alan Knight <knight at acm.org>wrote:
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>  I think you're looking at a different package than I am.
>>>>>>>>>>>>>>> Quite possibly it's the original work that Ramon did. I have no
>>>>>>>>>>>>>>> GSDescriptorSystem or GSPooledDatabaseAccessor. I suspect that might also be
>>>>>>>>>>>>>>> for an old version of Seaside.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> At 04:11 PM 2010-03-26, John Toohey wrote:
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> I mean should my own Database class which is a sub-class of
>>>>>>>>>>>>>>> DescriptorSystem be changed to sub-class GSDescriptorSystem and then use
>>>>>>>>>>>>>>> GSPooledDatabaseAccessor instead of SqueakDatabaseAccessor?
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> I don't see any specific VW code in here, so far anyhow.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> I'll write this up and post it here, when I get it working.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> On Fri, Mar 26, 2010 at 16:03, Alan Knight <knight at acm.org>
>>>>>>>>>>>>>>> wrote:
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>  I'm not sure what you mean by inheriting from these. Right
>>>>>>>>>>>>>>> now, this provides a VW-specific pooling accessor. You could make a
>>>>>>>>>>>>>>> SqueakDBX one, and it probably would be nice to try and abstract some of
>>>>>>>>>>>>>>> that stuff to reduce any code duplication. And documentation is good too.
>>>>>>>>>>>>>>> This is based on work that Ramon Leon did, back in 2007, I'm not sure if it
>>>>>>>>>>>>>>> was in Squeak or not.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> At 03:29 PM 2010-03-26, John Toohey wrote:
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> This looks great. Is the correct procedure to have all my
>>>>>>>>>>>>>>> class that inherit from Glorp, inherit from these instead? I'm using
>>>>>>>>>>>>>>> GlorpDBX. I had no idea this was available, so we should get it documented
>>>>>>>>>>>>>>> on the SqueakDBX site.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> On Fri, Mar 26, 2010 at 14:42, Alan Knight <knight at acm.org>
>>>>>>>>>>>>>>> wrote:
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>  Take a look at the SeasideGlorp package.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> At 02:36 PM 2010-03-26, John Toohey wrote:
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> I need to write a connection pool for Glorp and am thinking
>>>>>>>>>>>>>>> that the Database accessor is the place to do this. Is this correct, or has
>>>>>>>>>>>>>>> anyone any experience with this?
>>>>>>>>>>>>>>> -- -JT
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> -- You received this message because you are subscribed to
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>>>>>>>>>>>>>>> For more options, visit this group at
>>>>>>>>>>>>>>> http://groups.google.com/group/glorp-group?hl=en.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> -- Alan Knight [|], Engineering Manager, Cincom Smalltalk
>>>>>>>>>>>>>>> knight at acm.org aknight at cincom.com
>>>>>>>>>>>>>>> http://www.cincom.com/smalltalk
>>>>>>>>>>>>>>> -- You received this message because you are subscribed to
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>>>>>>>>>>>>>>> unsubscribe from this group, send email to
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>>>>>>>>>>>>>>> For more options, visit this group at
>>>>>>>>>>>>>>> http://groups.google.com/group/glorp-group?hl=en.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> --
>>>>>>>>>>>>>>> -JT
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> --
>>>>>>>>>>>>>>> You received this message because you are subscribed to the
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>>>>>>>>>>>>>>> To post to this group, send email to
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>>>>>>>>>>>>>>> To unsubscribe from this group, send email to
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>>>>>>>>>>>>>>> .
>>>>>>>>>>>>>>> For more options, visit this group at
>>>>>>>>>>>>>>> http://groups.google.com/group/glorp-group?hl=en.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> --
>>>>>>>>>>>>>>> Alan Knight [|], Engineering Manager, Cincom Smalltalk
>>>>>>>>>>>>>>> knight at acm.org
>>>>>>>>>>>>>>> aknight at cincom.com
>>>>>>>>>>>>>>>  http://www.cincom.com/smalltalk
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> --
>>>>>>>>>>>>>>> You received this message because you are subscribed to the
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>>>>>>>>>>>>>>> To post to this group, send email to
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>>>>>>>>>>>>>>> To unsubscribe from this group, send email to
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>>>>>>>>>>>>>>> .
>>>>>>>>>>>>>>> For more options, visit this group at
>>>>>>>>>>>>>>> http://groups.google.com/group/glorp-group?hl=en.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> --
>>>>>>>>>>>>>>> -JT
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> --
>>>>>>>>>>>>>>> You received this message because you are subscribed to the
>>>>>>>>>>>>>>> Google Groups "glorp-group" group.
>>>>>>>>>>>>>>> To post to this group, send email to
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>>>>>>>>>>>>>>> To unsubscribe from this group, send email to
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>>>>>>>>>>>>>>> .
>>>>>>>>>>>>>>> For more options, visit this group at
>>>>>>>>>>>>>>> http://groups.google.com/group/glorp-group?hl=en.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> --
>>>>>>>>>>>>>>> Alan Knight [|], Engineering Manager, Cincom Smalltalk
>>>>>>>>>>>>>>> knight at acm.org
>>>>>>>>>>>>>>> aknight at cincom.com
>>>>>>>>>>>>>>>  http://www.cincom.com/smalltalk
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>> --
>>>>>>>>>>>>>>> You received this message because you are subscribed to the
>>>>>>>>>>>>>>> Google Groups "glorp-group" group.
>>>>>>>>>>>>>>> To post to this group, send email to
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>>>>>>>>>>>>>>> To unsubscribe from this group, send email to
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>>>>>>>>>>>>>>> .
>>>>>>>>>>>>>>> For more options, visit this group at
>>>>>>>>>>>>>>> http://groups.google.com/group/glorp-group?hl=en.
>>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>> --
>>>>>>>>>>>>>> -JT
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>
>>>>>>>>>>>>>>  --
>>>>>>>>>>>>>> You received this message because you are subscribed to the
>>>>>>>>>>>>>> Google Groups "glorp-group" group.
>>>>>>>>>>>>>> To post to this group, send email to
>>>>>>>>>>>>>> glorp-group at googlegroups.com.
>>>>>>>>>>>>>> To unsubscribe from this group, send email to
>>>>>>>>>>>>>> glorp-group+unsubscribe at googlegroups.com<glorp-group%2Bunsubscribe at googlegroups.com>
>>>>>>>>>>>>>> .
>>>>>>>>>>>>>> For more options, visit this group at
>>>>>>>>>>>>>> http://groups.google.com/group/glorp-group?hl=en.
>>>>>>>>>>>>>>
>>>>>>>>>>>>>
>>>>>>>>>>>>>  --
>>>>>>>>>>>>> You received this message because you are subscribed to the
>>>>>>>>>>>>> Google Groups "glorp-group" group.
>>>>>>>>>>>>> To post to this group, send email to
>>>>>>>>>>>>> glorp-group at googlegroups.com.
>>>>>>>>>>>>> To unsubscribe from this group, send email to
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>>>>>>>>>>>>> .
>>>>>>>>>>>>> For more options, visit this group at
>>>>>>>>>>>>> http://groups.google.com/group/glorp-group?hl=en.
>>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> --
>>>>>>>>>>>> -JT
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>  --
>>>>>>>>>>>> You received this message because you are subscribed to the
>>>>>>>>>>>> Google Groups "glorp-group" group.
>>>>>>>>>>>> To post to this group, send email to
>>>>>>>>>>>> glorp-group at googlegroups.com.
>>>>>>>>>>>> To unsubscribe from this group, send email to
>>>>>>>>>>>> glorp-group+unsubscribe at googlegroups.com<glorp-group%2Bunsubscribe at googlegroups.com>
>>>>>>>>>>>> .
>>>>>>>>>>>> For more options, visit this group at
>>>>>>>>>>>> http://groups.google.com/group/glorp-group?hl=en.
>>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>>  --
>>>>>>>>>>> You received this message because you are subscribed to the
>>>>>>>>>>> Google Groups "glorp-group" group.
>>>>>>>>>>> To post to this group, send email to
>>>>>>>>>>> glorp-group at googlegroups.com.
>>>>>>>>>>> To unsubscribe from this group, send email to
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>>>>>>>>>>> .
>>>>>>>>>>> For more options, visit this group at
>>>>>>>>>>> http://groups.google.com/group/glorp-group?hl=en.
>>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> --
>>>>>>>>>> -JT
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>  --
>>>>>>>>>> You received this message because you are subscribed to the Google
>>>>>>>>>> Groups "glorp-group" group.
>>>>>>>>>> To post to this group, send email to glorp-group at googlegroups.com
>>>>>>>>>> .
>>>>>>>>>> To unsubscribe from this group, send email to
>>>>>>>>>> glorp-group+unsubscribe at googlegroups.com<glorp-group%2Bunsubscribe at googlegroups.com>
>>>>>>>>>> .
>>>>>>>>>> For more options, visit this group at
>>>>>>>>>> http://groups.google.com/group/glorp-group?hl=en.
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>>  --
>>>>>>>>> You received this message because you are subscribed to the Google
>>>>>>>>> Groups "glorp-group" group.
>>>>>>>>> To post to this group, send email to glorp-group at googlegroups.com.
>>>>>>>>> To unsubscribe from this group, send email to
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>>>>>>>>> .
>>>>>>>>> For more options, visit this group at
>>>>>>>>> http://groups.google.com/group/glorp-group?hl=en.
>>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> --
>>>>>>>> -JT
>>>>>>>>
>>>>>>>>
>>>>>>>>  --
>>>>>>>> You received this message because you are subscribed to the Google
>>>>>>>> Groups "glorp-group" group.
>>>>>>>> To post to this group, send email to glorp-group at googlegroups.com.
>>>>>>>> To unsubscribe from this group, send email to
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>>>>>>>> .
>>>>>>>> For more options, visit this group at
>>>>>>>> http://groups.google.com/group/glorp-group?hl=en.
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> _______________________________________________
>>>>>>> SqueakDBX mailing list
>>>>>>> SqueakDBX at lists.squeakfoundation.org
>>>>>>> http://lists.squeakfoundation.org/mailman/listinfo/squeakdbx
>>>>>>>
>>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> -JT
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> -JT
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> SqueakDBX mailing list
>>>>> SqueakDBX at lists.squeakfoundation.org
>>>>> http://lists.squeakfoundation.org/mailman/listinfo/squeakdbx
>>>>>
>>>>>
>>>>
>>>> _______________________________________________
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>>>> http://lists.squeakfoundation.org/mailman/listinfo/squeakdbx
>>>>
>>>>
>>>
>>>
>>> --
>>> -JT
>>>
>>>
>>>
>>> _______________________________________________
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>>> http://lists.squeakfoundation.org/mailman/listinfo/squeakdbx
>>>
>>>
>>
>
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-- 
-JT
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