On Thu, 20 Dec 2007 20:45:46 -0500
Rick Morrison [EMAIL PROTECTED] wrote:
Re-implementing pickle with a JSON storage format is going to be a
huge job, and really won't give you anything that you don't already
get from pickle
That's surely right: consider that Pickle is not simply a format,
Is there a way to protect objects from modifications? I have a complex
self-referential data structure that is passed to some other modules
written by co-workers. I need to avoid that the data structure is changed
(because
of programming errors). Is there an easy way to accomplish this (other
On Dec 21, 9:48 am, simpsomboy [EMAIL PROTECTED] wrote:
I need to create some database objects(like a trigger) and insert some
initial data into table after creation, so I need to know if have some
way to do it transparent on sqlalchemy
database trigger syntax is pretty database specific
Hello all,
I've done some finds over list, but not found the answer to solve my
problem.
I need to create some database objects(like a trigger) and insert some
initial data into table after creation, so I need to know if have some
way to do it transparent on sqlalchemy, like putting a method on
DB = sqlite
I don't now if this is a bug or an issue with my mapper config, but
the count() method does not work correctly through relationships.
Given this mapper:
mapper(Branch, branches, properties={
'reports':dynamic_loader(Report, backref='branch')
})
b = sess.query(Branch).first()
On Dec 21, 2007, at 11:09 AM, Alexandre da Silva wrote:
it would be just a Method like after_create_execute(SOME DATABASE
SPECIFIC SQL), and this method should be called after creation of
table, but just on creation... would be usefull have an
before_drop_execute(SOME STATEMENT) to make
database trigger syntax is pretty database specific so we dont have a
generic DDL construct for that right now. you can issue the DDL using
a textual execute like engine.execute(CREATE TRIGGER ...). for
inserting of data you usually would use a table.insert() construct.
ok, it helps if I
we have a ticket in the works for this:
http://www.sqlalchemy.org/trac/ticket/903
ok, I will look at this ticket.
note that this feature applies to Table objects, not ORM mapped
classes. A central tenet of SQLAlchemy is that the object relational
mapper is an optional package which
Hi all,
In the HEAD version, the table creation does not set the default
values on the columns (tested on mysql and mssql)
It seems that the function SchemaGenerator.get_column_default_string
(in compiler.py) always returns None, even if a default value is
specified.
801 def
On Dec 21, 2007, at 11:57 AM, Christophe de VIENNE wrote:
Hi all,
In the HEAD version, the table creation does not set the default
values on the columns (tested on mysql and mssql)
It seems that the function SchemaGenerator.get_column_default_string
(in compiler.py) always returns None,
Hello,
What is the code for setting up a compound key?
For normal key I would do:
Column('id', Integer, primary_key=True, autoincrement),
For compound key I do?
Column('id', Integer, primary_key=True),
Column('idupdate', Integer, primary_key=True, autoincrement),
In sql form that would be
2007/12/21, Michael Bayer [EMAIL PROTECTED]:
In the HEAD version, the table creation does not set the default
values on the columns (tested on mysql and mssql)
It seems that the function SchemaGenerator.get_column_default_string
(in compiler.py) always returns None, even if a default
Something like this is available on a roll-your-own basis via Python
properties along with some mapper tricks:
http://www.sqlalchemy.org/docs/04/mappers.html#advdatamapping_mapper_overriding
I would be +1 for such a feature implemented on mapped instances, could be
useful for detecting those
I rearranged instance-level deferred loaders to be serializable
instances in r3968. you can now pickle an instance + its _state and
restore, and all deferred/lazy loaders will be restored as well. I
didnt yet test it specifically with merge() but give it a try, you
shoudnt be getting that
i have such thing implemented externaly but it is definitely not nice (read:
tricky and underground) - replacing the __dict__ with something handmade
that does what i say as i say if i say. that's dbcook's reflector for my
static_type structures; look in dbcook/usage/static_type if interested.
On Dec 21, 2007, at 2:20 PM, Lukasz Szybalski wrote:
http://www.sqlalchemy.org/docs/04/sqlalchemy_types.html
Is there a reason why I can define my column with
Integer or INTEGER
but not
Decimal,Text,Blob etc.
Shouldn't there be some kind of consistency? Either Capitalized
letters or
On Dec 21, 2007, at 3:13 PM, Rick Morrison wrote:
Something like this is available on a roll-your-own basis via Python
properties along with some mapper tricks:
http://www.sqlalchemy.org/docs/04/mappers.html#advdatamapping_mapper_overriding
I would be +1 for such a feature
On Dec 21, 2007, at 2:10 PM, Christophe de VIENNE wrote:
2007/12/21, Michael Bayer [EMAIL PROTECTED]:
In the HEAD version, the table creation does not set the default
values on the columns (tested on mysql and mssql)
It seems that the function SchemaGenerator.get_column_default_string
(in
On Dec 21, 2007, at 3:54 PM, Anton V. Belyaev wrote:
1) I created an object with deferred property (not None).
2) Reloaded it in a new session (to erase deferred property)
3) Pickled/Unpickled
4) Removed everything but properties and _state.
what did you remove exactly ? there are some
On Dec 21, 2007, at 3:54 PM, Anton V. Belyaev wrote:
merge worked without an exception this time.
merge is working rudimentally for objects with unloaded scalar/
instance/collection attributes in r3974. whats not yet happening is
the merging of the various query.options() that may be
Hello Again,
I am already trying go get the list of mapped tables. I currently got a
list from sqlalchemy.org.mapper from the weakref mapper_registry, but
I don't know if that values are useful for my context.
I also have another question, I have some way to access the mapped class
from the
Hi all,
I have a situation where I want to declare a relation between two
tables, but I want to be able to run a callback whenever I append to
that relation. Here's an example
class Kennel:
def callback(self, o):
print callback, o
mapper = Mapper(
Kennel,
kennelTable,
Hi All,
We have just released www.gcollab.com, a site hosting global
collaborative services such as tmail.
SQLAlchemy is being used as the database component/ORM of gcollab. My
experience with SQLAlchemy has been rewarding and smooth. The
documentation is great. The support and response in this
23 matches
Mail list logo
