Am Freitag, 27. Juni 2008 01:20 schrieb Michael Bayer:
first of all, the stack trace suggests you have not set the encoding
parameter on create_engine() as it's still using UTF-8.
If you mean that a single database column may have different encodings
in different rows, you want to do your
I just want to add some significant fact: it really seems that the
ordering is not correct only because the result of the columns
division is (or at least should ) a float between 0 and 1.
If I put figures that give a result to 1, it seems worling fine
(ie 10 / 2 -- 5, 12 / 2 -- 6 will be
Hi,
I'm new in SQLAlchemy (and also in Python in fact), can anyone help me
with this (maybe silly) problem, please (it's just experiments, so
please don't say - use framework XY instead your solution):
Situation:
- I have SimpleXMLRPCServer up and running (based on xmlrpclib) -
working ok.
- I
Lilo wrote:
My understanding of this query_chooser is that it's used when you want
to execute orm's sql rather than raw sql.
I don't quite understand what is visit_binary function do from
attribute_shard.py example. What does it mean binary.operator,
binary.left, binary.right.clause and
Within my application (FB SQL) I use kinterbasdb.services to do backup
and restore operations.
No problem with the backup, but the restore is not working as SA seems
to hang on to a connection.
I do basically this to connect:
self.engine = db.sa.create_engine(dburl, encoding='utf8',
Hello!
I have table wordforms and WordformMapping associated with it. Bi-
directional self-relation is expressed by using association table with
attributes named infinitives and forms. I am using Elixir for
mapping definition so I cannot access association table with it's
columns explicitly.
I am
Hi.
I want to do robust algorithm for searching in tables...the simplest
example is with table with no relations:
stmt = u'SELECT * FROM '
stmt += str(b.clients.name)
stmt += ' WHERE '
for c in b.Client.c:
stmt += str(c)+' like \'%value%\' or '
clients =
If you do them as double percent signs ( '%%') then the python string
formatting will replace them with single percent signs.
On Fri, Jun 27, 2008 at 9:12 AM, [EMAIL PROTECTED]
[EMAIL PROTECTED] wrote:
Hi.
I want to do robust algorithm for searching in tables...the simplest
example is with
If I am using the mysql-specific Column constructs with the charset
option, will things be automatically encoded/ decoded by SA using that
charset? Or is the charset option only used for Create Table?
On Thu, Jun 26, 2008 at 7:20 PM, Michael Bayer [EMAIL PROTECTED] wrote:
first of all, the
Werner F. Bruhin wrote:
Within my application (FB SQL) I use kinterbasdb.services to do backup
and restore operations.
No problem with the backup, but the restore is not working as SA seems
to hang on to a connection.
I do basically this to connect:
self.engine =
what is multisearch? sort of patternmatching?
http://www.sqlalchemy.org/docs/05/ormtutorial.html#datamapping_querying_common
query(A).filter( or_(
A.c1.startswith(),
A.c2.endswith(),
A.c3.like('%alabal%'),
...
))
u can generate the arguments of or_(...)
On Friday 27 June
1)
multisearch... I meant, that i want to create piece of code, that
will automaticly search in all columns of a table
So if I can use this function (or whatever it will be) for different
tables with no change..
for example:
I have a client(table) with address(related table one-to-one) and
On Jun 27, 2008, at 3:25 AM, Nabla wrote:
Is there some easy solution of this problem?
yes, the receiving application needs to have the same mapper() setup
as the sender. If you use the declarative extension to setup your
classes, this task is made easier.
And additional question -
I made a web page . when i want to delete ant case then it shows this
error.
class 'sqlalchemy.exceptions.InvalidRequestError': ('The transaction
is inactive due to a rollback in a subtransaction and should be
closed', bound method Admin.deletestudy of
radspeed.controllers.Admin instance at
On Fri, Jun 27, 2008 at 2:44 PM, MuTPu4 [EMAIL PROTECTED] wrote:
I have table wordforms and WordformMapping associated with it. Bi-
directional self-relation is expressed by using association table with
attributes named infinitives and forms. I am using Elixir for
mapping definition so I
I've got a scenario here that seems as if it would be simple to solve,
but it baffling me so far. Pointers in the right direction would be
appreciated.
I have a table of Foo objects, and FooCollection objects. In a classic
many-to-many, a collection may contain a number of Foos, and any
sorry to ride your thread but just to add related question: how can a
reference be seen as its key/id and never the referred instance? turn
off some postprocessing in properties/instrumentedAttr, or not map it
at all?
On Friday 27 June 2008 17:12:21 Paul-Michael Agapow wrote:
I've got a
On Friday 27 June 2008 16:55:22 [EMAIL PROTECTED] wrote:
1)
multisearch... I meant, that i want to create piece of code, that
will automaticly search in all columns of a table
So if I can use this function (or whatever it will be) for
different tables with no change..
for example:
I
On Jun 27, 2008, at 10:12 AM, Paul-Michael Agapow wrote:
But, I have a situation where I don't want FooCollection to actually
contain the actual Foos, just a list of their keys. That is, Foos and
FooCollections have to be handled separately. Obviously it will
involve more paperwork, but
On Jun 27, 2008, at 9:42 AM, Werner F. Bruhin wrote:
After searching through the doc and doing some googling and trial and
error I added an engine.dispose() to the closing routine and that
seems
to do the trick. Is this the correct approach?
New version of closing db:
My, that's fast turnaround :^)
Thanks Michael. If I understand associationproxy right, it requires
changes to be made to the class, which is a nuisance since one of SA's
great strengths is that you don't have alter mapped classes. My
classes are being used in non-DB applications, so I'd
I use Gnosis Utils for a similar purpose. The API is similar to pickle, but if
you need to control the details of the serialization (which fields get
serialized and how), then that is quite different. Gnosis has a concept called
mutators for this.
Barry
- Original Message
From:
On Jun 27, 2008, at 11:55 AM, Paul-Michael Agapow wrote:
My, that's fast turnaround :^)
Thanks Michael. If I understand associationproxy right, it requires
changes to be made to the class, which is a nuisance since one of SA's
great strengths is that you don't have alter mapped classes.
my understanding is that mysql works a little differently here. the
column-level character sets are storage encodings only. all data to and
from the database is encoded in the database connection's configured
encoding. that can either be left as-is or converted to Unicode for you.
Bobby
I don't understand how can remote client application have the same
mapper setup in situation where there is no direct connection to
database to reflect the tables and map to the classes.
In addition at the server side the classes are declared only like
class XYZ(object):pass and the internal
Thank you for the tip, I'll try
Peter
On Fri, Jun 27, 2008 at 6:09 PM, Barry Hart [EMAIL PROTECTED] wrote:
I use Gnosis Utils for a similar purpose. The API is similar to pickle, but
if you need to control the details of the serialization (which fields get
serialized and how), then that is
u need to recreate the same graph of objects on the client side
without the db underneath?
just serialize all the objects u have then and send them over.
what is to be serialized - maybe something like
dict( (p.key, getattr(obj,key) )
for p in object_mapper(obj).iter_properties )
for
For those who may get stuck on this kind of things in the future:
This works fine:
session.execute(SELECT * ,(CASE WHEN Mytable.ColC = :i THEN :i WHEN
Mytable.ColC :i THEN CAST(Mytable.ColB AS FLOAT) / Mytable.ColC END)
AS Calcul FROM Mytable ORDER BY Calcul, {'i':0})
Thanks
Dominique
Why is this so hard?? In SQLObject, this problem consists entirely
of:
print queryobj
Bye all,
--Buck
On Jun 25, 11:23 am, Michael Bayer [EMAIL PROTECTED] wrote:
On Jun 25, 2008, at 2:14 PM, bukzor wrote:
Thanks.
Trying to do this in 0.5, it seems someone deleted the Query.compile()
On Jun 27, 2008, at 12:23 PM, Petr Dlabal wrote:
I don't understand how can remote client application have the same
mapper setup in situation where there is no direct connection to
database to reflect the tables and map to the classes.
In addition at the server side the classes are
On Jun 27, 2008, at 1:49 PM, bukzor wrote:
Why is this so hard?? In SQLObject, this problem consists entirely
of:
print queryobj
in SQLAlchemy it is also:
print queryobj
how is that harder ?
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some aliasing is missing or what?
see attached file
(sa 0.4)
print session.query( PVOwnership).join( 'param_value').all()
...
sqlalchemy.exceptions.OperationalError: (OperationalError) no such
column: ParamValue.db_id
u'SELECT PVOwnership.param_value_id
AS PVOwnership_param_value_id,
0.4 has trouble joining *to* a joined-table mapper, as below you can
see its failing to convert model join paramvalue into a subquery.
what's 0.5 say ?
On Jun 27, 2008, at 2:45 PM, [EMAIL PROTECTED] wrote:
some aliasing is missing or what?
see attached file
(sa 0.4)
print
On Friday 27 June 2008 21:58:22 Michael Bayer wrote:
0.4 has trouble joining *to* a joined-table mapper, as below you
can see its failing to convert model join paramvalue into a
subquery. what's 0.5 say ?
seems to work, on the simplified case at least.
On Jun 27, 2008, at 2:45 PM, [EMAIL
On Jun 27, 2008, at 3:11 PM, [EMAIL PROTECTED] wrote:
On Friday 27 June 2008 21:58:22 Michael Bayer wrote:
0.4 has trouble joining *to* a joined-table mapper, as below you
can see its failing to convert model join paramvalue into a
subquery. what's 0.5 say ?
seems to work, on the
On Friday 27 June 2008 22:09:39 Michael Bayer wrote:
On Jun 27, 2008, at 3:11 PM, [EMAIL PROTECTED] wrote:
On Friday 27 June 2008 21:58:22 Michael Bayer wrote:
0.4 has trouble joining *to* a joined-table mapper, as below you
can see its failing to convert model join paramvalue into a
I'm getting a ProgrammingError (I've pasted the last part of the
traceback at the bottom of the page).
The error comes from my first heavy-AJAX page in Pylons (postgres
backend). If I cause too many AJAX requests at a time, or even after
doing 3 non-overlapping AJAX requests, I get the error.
On Friday 27 June 2008 22:09:39 Michael Bayer wrote:
On Jun 27, 2008, at 3:11 PM, [EMAIL PROTECTED] wrote:
On Friday 27 June 2008 21:58:22 Michael Bayer wrote:
0.4 has trouble joining *to* a joined-table mapper, as below you
can see its failing to convert model join paramvalue into a
On Jun 27, 2008, at 4:03 PM, Matt Haggard wrote:
I'm getting a ProgrammingError (I've pasted the last part of the
traceback at the bottom of the page).
The error comes from my first heavy-AJAX page in Pylons (postgres
backend). If I cause too many AJAX requests at a time, or even after
INSERT or UPDATE? I don't do any inserts with this code... only
changing what's already there.
Is an integrity constraint a PG thing, or SQLAlchemy model thing?
And can I do Session.rollback() ?
Thanks!
On Jun 27, 2:19 pm, Michael Bayer [EMAIL PROTECTED] wrote:
On Jun 27, 2008, at 4:03 PM,
Hello,
I have the following scenario where I want the same class/table on
both sides of a relation.
person table
- id
- name
manager table
- person_id
- manager_id
I define both tables and a Person class, then create a relation in the
person mapper like:
'manager' : relation(Person,
I've fixed it by calling Session.clear() at the end of every
controller action (it's in __after__()).
I'm gonna go read about what that does -- right now it's just magic as
far as I can tell :)
Thanks again for the help, Michael
On Jun 27, 3:30 pm, Michael Bayer [EMAIL PROTECTED] wrote:
On
this relation will require you to configure primaryjoin and
secondaryjoin (it should be raising an error without them). an
example is attached.
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I replaced create_session in sqlsoup with scoped_session, which
appears to have been the only reference to it.
-Jonathan
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two things are needed:
1. the official way to create a Session when all you want is a
Session, with no custom builder class or anything like that. It
should not be grossly inconsistent with the default arguments of the
current sessionmaker() call.
2. all the myriad create_session() calls
Michael Bayer wrote:
two things are needed:
1. the official way to create a Session when all you want is a
Session, with no custom builder class or anything like that. It
should not be grossly inconsistent with the default arguments of the
current sessionmaker() call.
2. all the
Wow, thank you very much for the detailed example. It looks like just
what I need. I look forward to trying it out very soon.
-Tom
On Jun 27, 6:12 pm, Michael Bayer [EMAIL PROTECTED] wrote:
this relation will require you to configure primaryjoin and
secondaryjoin (it should be raising an
On Jun 27, 9:10 pm, Martijn Faassen [EMAIL PROTECTED] wrote:
So creating the Session class directly is the right way to go? I
switched from using that to create_session when I found out about the
existence of this function, but I can switch back.
well I think when you're calling
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