sqlobject-discuss — All things SQLObject-related

Re: [SQLObject] releaseConnection and Transactions

[Ian B. <ia...@co...>]

On Thursday, September 25, 2003, at 05:11 PM, Sidnei da Silva wrote:
> I've been having some trouble with the fact that releaseConnection
> does a rollback() if autoCommit is false and not 'exception' and
> supportTransactions is set to True. Namely, if in my application (Zope
> 3-based) I've set autoCommit to false because Zope takes care of
> commiting the transaction at the right time, but then it reaches this
> path and anything that I do gets rolled back. So, the solution for me
> was to set supportTransactions to False, which doesn't seem to affect
> anything, but feels icky anyway. Is there any special reason for the
> rollback() there? The line in question is 98 of DBConnection.

Looking at that again, I don't know that the code is really correct.  
The difficulty is that objects should know when they are rolled back.  
I know ZODB handles this as well; I'm not as clear about how that fits 
into SQLObject.  Specifically, Transaction.rollback expires all the 
instances so that invalid cached values are removed.

So, I don't know if the current behavior is really right, but I don't 
think removing it is quite right either.  Though it may be appropriate 
to set supportTransactions to false, because in a Zope environment the 
transactions are being handled by Zope, not by SQLObject.  Though Zope 
is not always the final work on transactions either -- it's sometimes 
necessary to commit or rollback transactions in the middle of a 
request.  So that has to be factored in too.  So, in summary, I'm not 
sure.

   Ian

Re: [SQLObject] Unknown SQL builtin type error (multiple foreign keys)

[Ian B. <ia...@co...>]

On Thursday, September 25, 2003, at 05:18 PM, Luke Opperman wrote:
> The error happens during the second call to addColumn, and only if I 
> import
> StoryMotivation before Motivation (otherwise the rogue code below 
> never gets
> called due to how needSet works).
>
> addNeedSet snippet:
>         cls = findClass(setCls, registry=registry)
>         if callable(getattr(obj, attr, None)):
>             getattr(obj, attr)(cls)
>         else:
>             setattr(obj, attr, cls)
>
> I'm trying to understand the reason for trying to create an instance 
> of the
> class in the positive if statement. My code works if I comment that 
> out (ie,
> if obj.attr already exists, then pass, otherwise set it) or just 
> always set
> it. But ?

This is so that addNeedSet/setNeedSet allow both callbacks and 
attribute setting (callbacks being more general).  The particular 
problem here is already fixed in CVS.

   Ian

Re: [SQLObject] SQLObject / FireBird / WebWare

[Randall R. <ra...@ra...>]

On Thursday, September 25, 2003, at 05:49 PM, Ian Sparks wrote:

> General questions :
>
> How do SQLObject models fit into Webware?
> Are there threading issues?
> Does it work like dbPool?
>
> If anyone has some simple (even pseudocode) examples that would be a 
> great
> help.

Well, I haven't run into any big issues yet, and I've
been building my latest app (a combination articles site
and shopping cart) with it.  On the other hand, I'm not
trying to store my servlets in the db or anything.  I
also haven't needed transactions yet, but expect to.

The two easy ways of getting around the caching (when
updating articles, etc) are creating any needed objects
in awake() and destroying them in sleep(), or just
restarting the appserver on changes that would be
cached by a servlet.  I do the latter.

For me, SQLObject has replaced the pooling built into
psycopg.  Just in time, too, as psycopg 2.0 will not
have it anymore. :)

If you can be more specific about something you'd like
to see an example of, I can just pull out some of my
current code (assuming I'm doing whatever you want to
see).

-- 
Randall Randall <ra...@ra...>
"When you advocate any government action, you must first
believe that violence is the best answer to the question
at hand." -- Allen Thornton

[SQLObject] Unknown SQL builtin type error (multiple foreign keys)

[Luke O. <lu...@me...>]

I'm thinking this has been mentioned on the list before, but getting an odd
error:

  File "/usr/lib/python2.2/site-packages/SQLObject/SQLBuilder.py", line 126, in
sqlRepr
    raise ValueError, "Unknown SQL builtin type: %s for %s" % \
ValueError: Unknown SQL builtin type: <class
'SQLObject.SQLObject.MetaSQLObject'> for <class
'MyContext.sqlobject.Motivation.Motivation'>

When I have two foreignKey's in a table to the same related table

Classes look like:

class StoryMotivation(CoreObject):
  monkey = ForeignKey('Motivation')
  donkey = ForeignKey('Motivation')
  story = StringCol()

class Motivation(CoreObject):
  name = StringCol()

The error happens during the second call to addColumn, and only if I import
StoryMotivation before Motivation (otherwise the rogue code below never gets
called due to how needSet works).

addNeedSet snippet:
        cls = findClass(setCls, registry=registry)
        if callable(getattr(obj, attr, None)):
            getattr(obj, attr)(cls)
        else:
            setattr(obj, attr, cls)

I'm trying to understand the reason for trying to create an instance of the
class in the positive if statement. My code works if I comment that out (ie,
if obj.attr already exists, then pass, otherwise set it) or just always set
it. But ?

- Luke

[SQLObject] releaseConnection and Transactions

[Sidnei da S. <si...@pl...>]

Howdy again,

I've been having some trouble with the fact that releaseConnection
does a rollback() if autoCommit is false and not 'exception' and
supportTransactions is set to True. Namely, if in my application (Zope
3-based) I've set autoCommit to false because Zope takes care of
commiting the transaction at the right time, but then it reaches this
path and anything that I do gets rolled back. So, the solution for me
was to set supportTransactions to False, which doesn't seem to affect
anything, but feels icky anyway. Is there any special reason for the
rollback() there? The line in question is 98 of DBConnection.

[]'s
-- 
Sidnei da Silva <si...@pl...>
dreamcatching :: making your dreams come true
http://dreamcatcher.homeunix.org

Simulations are like miniskirts, they show a lot and hide the essentials.
		-- Hubert Kirrman

[SQLObject] Boolean

[Sidnei da S. <si...@pl...>]

Howdy folks.=20

I've just checked in a BoolCol, and later I've figured out that it
only works reliably on python 2.3. When I run the tests on python 2.2
I get 16 errors on my box, but none on 2.3. Can anyone confirm which
one is the target version?=20

[]'s
--=20
Sidnei da Silva <si...@pl...>
dreamcatching :: making your dreams come true
http://dreamcatcher.homeunix.org

Security check: =07=07=07INTRUDER ALERT!

[SQLObject] SQLObject / FireBird / WebWare

[Ian S. <ia...@et...>]

General questions :

How do SQLObject models fit into Webware?
Are there threading issues?
Does it work like dbPool?

If anyone has some simple (even pseudocode) examples that would be a great
help.

Thanks.

[SQLObject] Re: Problem with Mostly Live CVS Tarball (windows)

[Ian S. <ian...@et...>]

> http://sources.redhat.com/bzip2/ has the windows program that
> can unzip this file.  Then winzip will probably open it.

That's it. Thanks all.


"Randall Randall" <ra...@ra...> wrote in message
news:6C5...@ra......
>
> On Thursday, September 11, 2003, at 05:58 PM, Ian Sparks wrote:
>
> > http://colorstudy.com/ianb/SQLObject-cvs.tar.bz2
> >
> > Winzip won't open this, which is a shame because I'd like to get it.
> >
> > When I've had problems like this in the past I've often cured them with
> > changing the file ext to .tar but no go on this.
> >
> > Advice anyone?
>
> http://sources.redhat.com/bzip2/ has the windows program that
> can unzip this file.  Then winzip will probably open it.
>
> --
> Randall Randall <ra...@ra...>
> "When you advocate any government action, you must first
> believe that violence is the best answer to the question
> at hand." -- Allen Thornton
>
>
> --
> Randall Randall <ra...@ra...>
> "When you advocate any government action, you must first
> believe that violence is the best answer to the question
> at hand." -- Allen Thornton
>
>
> --
> Randall Randall <ra...@ra...>
> "When you advocate any government action, you must first
> believe that violence is the best answer to the question
> at hand." -- Allen Thornton
>
>
>
> -------------------------------------------------------
> This sf.net email is sponsored by:ThinkGeek
> Welcome to geek heaven.
> http://thinkgeek.com/sf

[SQLObject] Minor problem with set method

[James R. <jcr...@ya...>]

While playing with SQLObject, I ran into a problem
with the "set" method.  If an exception occurred
during an update (i.e. invalid data sent to the
server), the exception is properly raised to the
caller.  But, any subsequent "set" calls causes "a
freeze." I know that, technically, the data should be
validated before sending it to the db, but... 

To make a long story short, I had to add a try/finally
block after the call to self._SO_writeLock.acquire()
in the SQLObject.set method so that the
self._SO_writeLock.release() always gets called.  

Will this break anything?

James

__________________________________
Do you Yahoo!?
Yahoo! SiteBuilder - Free, easy-to-use web site design software
http://sitebuilder.yahoo.com

Re: [SQLObject] style trouble

[Ian B. <ia...@co...>]

On Monday, September 22, 2003, at 12:23 PM, cvigny wrote:
> CREATE TABLE `url` (
>  `id` int(25) unsigned NOT NULL auto_increment,
>  `idprotocol` int(3) unsigned NOT NULL default '0',
>  PRIMARY KEY  (`id`)
> ) TYPE=MyISAM
> CREATE TABLE `protocol` (
>  `id` int(3) unsigned NOT NULL auto_increment,
>  `protocol` varchar(50) NOT NULL default '',
>  PRIMARY KEY  (`id`)
> ) TYPE=MyISAM
> from SQLObject import *
>
> import Config
>
> debug=1
> __connection__= MySQLConnection(host=Config.DB_HOST,  
> user=Config.DB_USERNAME, passwd=Config.DB_PASSWORD, 
> db="url",debug=debug)
>
> class MyStyle(Style):
>     def tableReference(self, table):
>         return  "id" + table.lower()
>
> __connection__.style = MyStyle(longID=True)

I think you don't want longID=True.  That means the primary key will be 
prefixed with the table name (like protocol_id), but you are using just 
"id" for the primary key.

   Ian

[SQLObject] style trouble

[cvigny <cv...@ar...>]

Hi,

I have a problem using the Style object,  I create my style for the 
foreign key building in  idtable but it don't work.
Please could you help with that ?

here the py, sql and traceback code.

I try to subscribe the mailling list but no response right now

Traceback (most recent call last):
  File "D:\python\artonline\tt.py", line 55, in ?
    u = Url.new(protocol=p)
  File "C:\Python22\Lib\site-packages\SQLObject\SQLObject.py", line 800, 
in new
    inst._SO_finishCreate()
  File "C:\Python22\Lib\site-packages\SQLObject\SQLObject.py", line 820, 
in _SO_finishCreate
    names, values)
  File "C:\Python22\Lib\site-packages\SQLObject\DBConnection.py", line 
127, in queryInsertID
    return self._runWithConnection(self._queryInsertID, table, idName, 
names, values)
  File "C:\Python22\Lib\site-packages\SQLObject\DBConnection.py", line 
73, in _runWithConnection
    val = meth(conn, *args)
  File "C:\Python22\Lib\site-packages\SQLObject\DBConnection.py", line 
370, in _queryInsertID
    c.execute(q)
  File "C:\Python22\lib\site-packages\MySQLdb\cursors.py", line 95, in 
execute
    return self._execute(query, args)
  File "C:\Python22\lib\site-packages\MySQLdb\cursors.py", line 114, in 
_execute
    self.errorhandler(self, exc, value)
  File "C:\Python22\lib\site-packages\MySQLdb\connections.py", line 33, 
in defaulterrorhandler
    raise errorclass, errorvalue
_mysql_exceptions.OperationalError: (1054, "Unknown column 'protocol_id' 
in 'field list'")


CREATE TABLE `url` (
  `id` int(25) unsigned NOT NULL auto_increment,
  `idprotocol` int(3) unsigned NOT NULL default '0',
  PRIMARY KEY  (`id`)
) TYPE=MyISAM
CREATE TABLE `protocol` (
  `id` int(3) unsigned NOT NULL auto_increment,
  `protocol` varchar(50) NOT NULL default '',
  PRIMARY KEY  (`id`)
) TYPE=MyISAM

Re: [SQLObject] import problems

[Ian B. <ia...@co...>]

On Wednesday, September 17, 2003, at 03:56 PM, Victor Ng wrote:
> Shouldn't I be able to redefine the class?

Sadly, no.

> I'm not sure why an assertion is being thrown.
>
Because SQLObject handles classes by name (e.g. 
ForeignKey('TableName')) it is important that classes not be redefined 
and that names be unique.  Re-fixing up classes would be quite 
difficult.

In general redefining classes in Python can be problematic.  In this 
specific instance I suppose it wouldn't cause a problem, but the 
assertion in there as a safeguard.

   Ian

[SQLObject] import problems

[Victor Ng <vn...@ma...>]

If I define the same class twice using SQLObject.SQLObject as the  
parent, I get the following error:

 >>> from SQLObject import *
 >>> class foo(SQLObject):
...     aColumn = IntCol()
...
 >>> class foo(SQLObject):
...     aColumn = IntCol()
...
Traceback (most recent call last):
   File "<stdin>", line 1, in ?
   File  
"/Library/Frameworks/Python.framework/Versions/2.3/lib/python2.3/site- 
packages/SQLObject/SQLObject.py", line 161, in __new__
     assert not classRegistry.get(registry, {}).has_key(className), "A  
database object by the name %s has already been created" %  
repr(className)
AssertionError: A database object by the name 'foo' has already been  
created

Shouldn't I be able to redefine the class?

I'm not sure why an assertion is being thrown.

vic

[SQLObject] Re: SQLObject

[Ian B. <ia...@co...>]

On Tuesday, September 16, 2003, at 08:20 AM, Mark Mueller wrote:
> Ian --
>
> Very nice job with the SQLObject project.  I am
> considering using it for several projects.
>
> I like to model problems using the BON technique,
> however, most middleware does not map to the program
> space in a way that allows me to go easily from the
> BON diagram to the program.  SQLObject help my by
> hiding the details.
>
> Thanks for all your work.

I'm glad you enjoy it.

You should post questions to the mailing list so that everyone can 
participate, answer, or hear the answer.

> I do have a question.  I have two classes arranged in
> a parent-child (one-to-many) relationship.  I need to
> be able to have my collection in the parent object
> include only a subset of the child items.  (For
> example, a customer's account object that has a
> transactions collection that includes transactions for
> a date range.)  My problem is that the account object,
> automatically, gives me all the transations.  Is there
> a way to filter the child objects?

You have to construct the select yourself, like (untested):

class Account(SQLObject):
     transactions = ForeignKey('Trans')
     def transactionsDuring(self, start=None, end=None):
         query = Trans.q.accountID == self.id
         if start:
             query = AND(query, Trans.q.eventDate > start)
         if end:
             query = AND(query, Trans.q.eventDate < end)
         return Trans.select(query)

   Ian

Re: [SQLObject] Problem with Mostly Live CVS Tarball (windows)

[Javier R. <jav...@Ho...>]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Ian Sparks wrote:
> http://colorstudy.com/ianb/SQLObject-cvs.tar.bz2
>
> Winzip won't open this, which is a shame because I'd like to get it.
>
> When I've had problems like this in the past I've often cured them with
> changing the file ext to .tar but no go on this.
>
> Advice anyone?

IFAIK Winzip can't handle bzip2 compression. Get WinRAR or a bzip2
decompressor (http://sources.redhat.com/bzip2/#bzip2-latest).

Later,
	Javier
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.2 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iD8DBQE/YSqr8XQC840MeeoRAl3HAJ4poO/hX3mgl9cH7vyMqc/90UJH5gCfe+75
fItDqw6kBbrDF72v7cVePcg=
=3da3
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Re: [SQLObject] Problem with Mostly Live CVS Tarball (windows)

[Randall R. <ra...@ra...>]

On Thursday, September 11, 2003, at 05:58 PM, Ian Sparks wrote:

> http://colorstudy.com/ianb/SQLObject-cvs.tar.bz2
>
> Winzip won't open this, which is a shame because I'd like to get it.
>
> When I've had problems like this in the past I've often cured them with
> changing the file ext to .tar but no go on this.
>
> Advice anyone?

http://sources.redhat.com/bzip2/ has the windows program that
can unzip this file.  Then winzip will probably open it.

-- 
Randall Randall <ra...@ra...>
"When you advocate any government action, you must first
believe that violence is the best answer to the question
at hand." -- Allen Thornton


-- 
Randall Randall <ra...@ra...>
"When you advocate any government action, you must first
believe that violence is the best answer to the question
at hand." -- Allen Thornton


-- 
Randall Randall <ra...@ra...>
"When you advocate any government action, you must first
believe that violence is the best answer to the question
at hand." -- Allen Thornton

Re: [SQLObject] Problem with Mostly Live CVS Tarball (windows)

[Ian B. <ia...@co...>]

On Thursday, September 11, 2003, at 04:58 PM, Ian Sparks wrote:
> http://colorstudy.com/ianb/SQLObject-cvs.tar.bz2
>
> Winzip won't open this, which is a shame because I'd like to get it.
>
> When I've had problems like this in the past I've often cured them with
> changing the file ext to .tar but no go on this.

Does WinZip open bz2 files?  I would have thought it would, but I've 
never tried it.  If, say, you have cygwin installed you'd do "tar jfx 
SQLObject-cvs.tar.bz2", or "bunzip2 ...".

   Ian

[SQLObject] Problem with Mostly Live CVS Tarball (windows)

[Ian S. <ian...@et...>]

http://colorstudy.com/ianb/SQLObject-cvs.tar.bz2

Winzip won't open this, which is a shame because I'd like to get it.

When I've had problems like this in the past I've often cured them with
changing the file ext to .tar but no go on this.

Advice anyone?

Re: [SQLObject] Elegant way of running custom queries

[Ian B. <ia...@co...>]

On Wednesday, September 10, 2003, at 03:54 AM, Simon Willison wrote:
> In an application I'm developing, I need to run a query that I don't 
> think is supported natively by SQLObject. I have a table of Stories, 
> each including the date it was created. I want to find all days within 
> a certain month which contain at least one story. Here's the query I 
> need to run constructed by hand:
>
> select
>   distinct dayofmonth(date)
> from
>   story
> where
>   date >= '2003-09-01'
> and
>   date < '2003-10-01'

Yeah, the distinct part isn't going to work.  Getting SQLObject to 
handle aggregate functions would be... I don't know.  Still not sure 
what that would mean -- some sort of functional style.

So, the SQL is probably the best you will get.  So I'd just do it like:

class Story(SQLObject):
     ...
     def daysWithStories(cls, month, connection=None):
         if connection is None:
             connection = cls._connection
         result = connection.queryOne(...your SQL...)
         return result[0]
     daysWithStories = classmethod(daysWithStories)

At least that way it will look like part of your class, if not part of 
SQLObject.

   Ian

[SQLObject] Elegant way of running custom queries

[Simon W. <cs...@ba...>]

Hi all,

In an application I'm developing, I need to run a query that I don't 
think is supported natively by SQLObject. I have a table of Stories, 
each including the date it was created. I want to find all days within a 
certain month which contain at least one story. Here's the query I need 
to run constructed by hand:

select
   distinct dayofmonth(date)
from
   story
where
   date >= '2003-09-01'
and
   date < '2003-10-01'

Since this isn't natively supported by SQLObject, what would be the most 
elegant / "best practise" method for implementing the query? I'd rather 
not import another Postgres module and use that, so I'm currently 
swinging towards adding an extra method to the Story class which 
executes the query using SQLObject's own query mechanism and returns the 
result. Is there a neater way of doing this?

Thanks,

Simon

Re: [SQLObject] SQLObject auto generated HTML forms?

[Ian B. <ia...@co...>]

On Tuesday, September 9, 2003, at 08:55 AM, Simon Willison wrote:
> Hi all,
>
> Has anyone done any work on extending SQLObject classes to 
> auto-generate HTML forms for adding / editing data in tables? I'm 
> about to start work on an extension to do just that but if someone has 
> already worked on it I'd rather not reinvent the wheel.

I've been working on a (still incomplete) for generation package, in 
webware-sandbox.sf.net CVS, /Sandbox/ianbicking/FormEncode -- the 
validation that I just recently added to SQLObject is taken from that 
package.  I'm definitely looking for input and ideas about how it 
should work -- mostly about how to make the interface general and also 
reasonable (i.e., not too verbose, or requiring mental gyrations to 
figure out how to work with and customize to your needs).

What's already in SQLObject should be expanded so you can add HTTP/HTML 
specific validators (and some of that process is in place in 
Validator.py).  Then you need to be able to annotate the class as a 
whole, so you can add attributes, hide columns from forms, etc.  I'm 
hoping that interfaces/adapters (probably taken from Zope 3's 
implementation) will aid in that.  Then the form generation has to be 
worked out.  I'm envisioning a limited number of generation 
possibilities at this point -- simplistic generation (useful for unit 
testing) that produces minimal HTML; a standard table-based layout, 
similar to what you might see in a registration form (labels ontop of 
input elements); and a template-based layout that inspects the HTML 
directly, replacing VALUE attributes, setting SELECTED attributes, etc.

*But*, I don't want to just pile these features on, because the result 
won't be general enough, or will be too verbose, or too hard to work 
with.  But these desires have kept me from finishing this off and 
putting it all together, even though the pieces are largely in place 
(except the HTML interpretation, but that's a recent plan on my part).

Anyway, that's my plan.  You're still welcome to have your own too ;)  
It would be nice if you used FormEncode's validation, though, even if 
you use something else for the other parts.

   Ian

[SQLObject] SQLObject auto generated HTML forms?

[Simon W. <cs...@ba...>]

Hi all,

Has anyone done any work on extending SQLObject classes to auto-generate 
HTML forms for adding / editing data in tables? I'm about to start work 
on an extension to do just that but if someone has already worked on it 
I'd rather not reinvent the wheel.

Cheers,

Simon Willison
http://simon.incutio.com/

Re: [SQLObject] More transaction troubles

[Randall R. <ra...@ra...>]

On Monday, September 8, 2003, at 09:19 PM, Ian Bicking wrote:
>> Anyway, I haven't got the chance to fairly test whether
>> transactions are working yet, because I'm using Python
>> 2.2, and this SQLObject doesn't work with it.  I'll
>> install 2.3 today and retest.
>
> 2.2 should be fine.  Are you having a problem with it?

Yes, but it's a known issue with 2.2, which was fixed
sometime later:
 >>> NTest(1, trans)
Traceback (most recent call last):
   File "<stdin>", line 1, in ?
   File "/usr/lib/python2.2/site-packages/SQLObject/SQLObject.py", line 
405, in __new__
     val._init(id, connection, selectResults)
   File "/usr/lib/python2.2/site-packages/SQLObject/SQLObject.py", line 
667, in _init
     selectResults = self._connection._SO_selectOne(self, dbNames)
   File "/usr/lib/python2.2/site-packages/SQLObject/DBConnection.py", 
line 416, in __getattr__
     meth = new.instancemethod(func, self, self.__class__)
TypeError: instancemethod() argument 3 must be class, not type

Guido mentioned on a mailing list that this was to be fixed
in 2.2.1, but since I had no reason to stay with 2.2.x for
everything, I just installed 2.3.

With Python 2.3, this problem doesn't exist, and everything
works swimmingly.

Thanks!

-- 
Randall Randall <ra...@ra...>
"When you advocate any government action, you must first
believe that violence is the best answer to the question
at hand." -- Allen Thornton

Re: [SQLObject] More transaction troubles

[Randall R. <ra...@ra...>]

On Sunday, September 7, 2003, at 02:32 PM, Ian Bicking wrote:
> Try CVS, I fixed a bunch of these yesterday.  Or 
> http://colorstudy.com/ianb/SQLObject-cvs.tar.bz2

After installing Python 2.3 and psycopg 1.1.8, transactions
seem to work fine.

Thanks!

-- 
Randall Randall <ra...@ra...>
"When you advocate any government action, you must first
believe that violence is the best answer to the question
at hand." -- Allen Thornton


-- 
Randall Randall <ra...@ra...>
"When you advocate any government action, you must first
believe that violence is the best answer to the question
at hand." -- Allen Thornton

Re: [SQLObject] Custom Validator (unique-ness)

[Sidnei da S. <si...@pl...>]

On Mon, Sep 08, 2003 at 08:27:09PM -0500, Ian Bicking wrote:
| Unique is hard, because you can't test it in isolation.  You'd have to 
| look at all the other rows, whether they are in memory or not.  It 
| seems like the database would do this best.
| 
| Anyway, I don't think this is the best place for a validator, it's 
| really best done in the database.  Is there a problem there?
| 
| Also, Validators.py is really part of another piece of (as-yet 
| unreleased) software I'm writing, and include/Validators.py is (and 
| will continue to be) a direct copy of that.  I'm not sure where the 
| best place for a SQLObject-specific validator is.

Thanks for the answer. I've ended up creating the validator as a field
constraint (it was for my zope3-integration project).

[]'s
-- 
Sidnei da Silva <si...@pl...>
dreamcatching :: making your dreams come true
http://dreamcatcher.homeunix.org

It's ten o'clock; do you know where your processes are?