[sqlalchemy] Best practices for using SQLAlchemy with generators?
Does anyone have any recommendations for best practices for using SQLAlchemy with generators? While generators are quite nice for creating data processing pipelines, I wondered if anyone had any specific recommendations about potential, subtle, bottlenecks with SQLAlchemy to watch out for. -- Cheers, Noah --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalchemy@googlegroups.com To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en -~--~~~~--~~--~--~---
[sqlalchemy] Re: Application performance
On Thu, Mar 19, 2009 at 11:20 PM, Andreas Jung wrote: > -BEGIN PGP SIGNED MESSAGE- > Hash: SHA1 > > On 19.03.2009 11:14 Uhr, Alex K wrote: > > Well, it does not affect the performance and I still get: > > The Python profiler will tell you exactly about bottlenecks. > So go and profile your code. > That is a good idea. Also, I notice that you set the connection to utf8 in the ORM, but I don't see that in the SQL. Are you making the db encode from say latin1 to utf8 possibly? > > - -aj > -BEGIN PGP SIGNATURE- > Version: GnuPG v1.4.9 (Darwin) > Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/ > > iEYEARECAAYFAknCHHwACgkQCJIWIbr9KYxYDQCg0Iv9BHkS0h/21SJf3duluOhB > 61kAn3DDo/OtLn5aU8gldAH4PGxpoK5w > =zBz2 > -END PGP SIGNATURE- > > > > -- Cheers, Noah --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalchemy@googlegroups.com To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en -~--~~~~--~~--~--~---
[sqlalchemy] Re: Any one tried to use SqlAlchemy with XML RPC?
On Wed, Mar 18, 2009 at 11:46 PM, 一首诗 wrote: > > Hi, > > I am trying to pass SqlAlchemy objects to client with XML RPC, but it > seems that that's not very easy. It depends on what you are trying to do, and what error messages you are getting, for anyone to help. I am using XML RPC with SQLAlchemy right now, and I am, in fact, passing objects in. I wrote a metaclass that calls back to XML RPC, and takes the ugly nested dictionary and returns back a nifty class pre-populated with attributes I need to fill out. When I set each attribute, it then populates __dict__. At that point, I simply pass that back to XML RPC. Works great. > > > The reason why I have to do this is that my client is written in > javascript and running on a web page. So it could not use anything > other than text based protocols, such as XML RPC, SOAP, or JSON. > > I tried pyamf, and it works pretty good with SA, but I can't use amf > with javascript. > > Is there any possible solutions with my problem? > > > -- Cheers, Noah --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalchemy@googlegroups.com To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en -~--~~~~--~~--~--~---
[sqlalchemy] Re: SQLAlchemy based syndication feed framework?
-- Forwarded message -- From: Walter Cruz Date: Thu, Mar 12, 2009 at 12:19 PM Subject: [sqlalchemy] Re: SQLAlchemy based syndication feed framework? To: sqlalchemy@googlegroups.com webhelpers, from Pylons, has a handy rss generator. I use it with SQLAlchemy, works fine. Hmm, this app will talk to a few other Pylons apps at some point, so I will have a look, thanks for the tip! On Wed, Mar 11, 2009 at 8:00 PM, Noah Gift wrote: > > > On Thu, Mar 12, 2009 at 11:25 AM, Noah Gift wrote: > >> Does anyone on this list know of a simple WSGI compatible, SQLAlchemy >> based feed framework, like the one offered with Django: >> http://docs.djangoproject.com/en/dev/ref/contrib/syndication/?from=olddocs >> >> To answer my own question, I found this: > > http://www.dalkescientific.com/Python/PyRSS2Gen.html > > Which looks fairly easy to combine with SQLAlchemy + something like this: > http://pypi.python.org/pypi/urlrelay/0.6 > > Hmm, maybe I will make this into a library. > >> >> >> -- >> Cheers, >> >> Noah >> > > > > -- > Cheers, > > Noah > > > -- []' - Walter waltercruz.com -- Cheers, Noah --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalchemy@googlegroups.com To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en -~--~~~~--~~--~--~---
[sqlalchemy] Re: SQLAlchemy based syndication feed framework?
On Thu, Mar 12, 2009 at 11:25 AM, Noah Gift wrote: > Does anyone on this list know of a simple WSGI compatible, SQLAlchemy based > feed framework, like the one offered with Django: > http://docs.djangoproject.com/en/dev/ref/contrib/syndication/?from=olddocs > > To answer my own question, I found this: http://www.dalkescientific.com/Python/PyRSS2Gen.html Which looks fairly easy to combine with SQLAlchemy + something like this: http://pypi.python.org/pypi/urlrelay/0.6 Hmm, maybe I will make this into a library. > > > -- > Cheers, > > Noah > -- Cheers, Noah --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalchemy@googlegroups.com To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en -~--~~~~--~~--~--~---
[sqlalchemy] SQLAlchemy based syndication feed framework?
Does anyone on this list know of a simple WSGI compatible, SQLAlchemy based feed framework, like the one offered with Django: http://docs.djangoproject.com/en/dev/ref/contrib/syndication/?from=olddocs -- Cheers, Noah --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalchemy@googlegroups.com To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en -~--~~~~--~~--~--~---
[sqlalchemy] Joining on Two Databases on Same Database Server Using SQLSoup
Sorry if this is a double post, I think my last message barfed: I was wondering if this was theoretically possible with SqlSoup + SqlAlchemy. Here is the SQL: SELECT p.ShotID, s.shot_ID FROM Production.Production p JOIN Shots.Shots s on p.ShotID = s.shot_ID; I have two databases that live on the same MySQL box, but wanted to perform a similar join with SqlSoup. I did a quick search but didn't come up with anything, has anyone done something like this? If not is how does Sqlalchemy handle this typically. -- Cheers, Noah --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalchemy@googlegroups.com To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en -~--~~~~--~~--~--~---
[sqlalchemy] Re: major help required with SQLAlchemy and Turbogears.
On 6/30/07, Michael Bayer <[EMAIL PROTECTED]> wrote: > > > > > On Jun 30, 4:41 pm, SamDonaldson <[EMAIL PROTECTED]> wrote: > > I wrote a custom query and selected a few columns out of a table. I > > then wanted to 'instantiatize' it so that i could reference the > > attributes as an object so I did that by calling the constructor of > > the sqlalchemy class that maps to the table. Now, I believe, since > > these classes were instantiated, sqlalchemy will try to force commit > > them at the end of the session. > > not at all. SA doesnt do anything automatic in this regard; only if > you say session.flush(). > > however: i am under the impression that Turbogears issues an explicit > SessionTransaction for every controller method. if so, this action > *will* issue a flush() for every controller request. so this would be > because thats how TG does it, via closing their SessionTransaction. > Pylons doesnt do anything like this..its much less opinionated. This is what messed me up too when I first starting using SA w/ turbogears. I did not know that a transaction occurred automatically with the controller and I wanted to use a transaction as part of the error handler validation and if a transaction failed do something. I later figured it out with the help of a few friends, but it is kind of a gotcha for people using TG1.0 as they may read the SA tutorial like good children and hear about all of the explicit handling of transactions, which is good I agree, then they use TG controller and is implicit. -- http://www.blog.noahgift.com --~--~-~--~~~---~--~~ You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalchemy@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en -~--~~~~--~~--~--~---
