Re: [SQLObject] overriden column trouble
On Tue, Jun 12, 2007 at 09:58:53AM -0400, Stanko Petrovic wrote: > At work we are usign pyodbc with sqlobject0.7.7 to talk to sqlserver. I am > not sure if anybody is intrested but I can ask to post some code how to do > it is > preaty easy Please do. Oleg. -- Oleg Broytmannhttp://phd.pp.ru/[EMAIL PROTECTED] Programmers don't die, they just GOSUB without RETURN. - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ sqlobject-discuss mailing list sqlobject-discuss@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sqlobject-discuss
Re: [SQLObject] overriden column trouble
Thank you Oleg I own you a beer for this!!! At work we are usign pyodbc with sqlobject0.7.7 to talk to sqlserver. I am not sure if anybody is intrested but I can ask to post some code how to do it is preaty easy, Nice thing is you can use py2exe and InnoSetup to make a setup.ext type of app On 6/12/07, Oleg Broytmann <[EMAIL PROTECTED]> wrote: On Tue, Jun 12, 2007 at 09:35:13AM -0400, Stanko Petrovic wrote: > I am coverting code from sqlobject 0.6.1 to 0.7.7 > and in 0.6.1 they used to have > > self._SO_creating attribute which we do not have in 0.7.7 > > is there anything that I can use instead of _SO_creating self.sqlmeta._creating Oleg. -- Oleg Broytmannhttp://phd.pp.ru/[EMAIL PROTECTED] Programmers don't die, they just GOSUB without RETURN. - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/___ sqlobject-discuss mailing list sqlobject-discuss@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sqlobject-discuss
Re: [SQLObject] overriden column trouble
On Tue, Jun 12, 2007 at 09:35:13AM -0400, Stanko Petrovic wrote: > I am coverting code from sqlobject 0.6.1 to 0.7.7 > and in 0.6.1 they used to have > > self._SO_creating attribute which we do not have in 0.7.7 > > is there anything that I can use instead of _SO_creating self.sqlmeta._creating Oleg. -- Oleg Broytmannhttp://phd.pp.ru/[EMAIL PROTECTED] Programmers don't die, they just GOSUB without RETURN. - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ sqlobject-discuss mailing list sqlobject-discuss@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sqlobject-discuss
Re: [SQLObject] overriden column trouble
Thanks Oleg I am coverting code from sqlobject 0.6.1 to 0.7.7 and in 0.6.1 they used to have self._SO_creating attribute which we do not have in 0.7.7 is there anything that I can use instead of _SO_creating On 6/12/07, Oleg Broytmann <[EMAIL PROTECTED]> wrote: On Mon, Jun 11, 2007 at 04:24:11PM -0400, Stanko Petrovic wrote: > class Testadd(so.SQLObject): >class sqlmeta: >style = so.MixedCaseStyle(longID=True) >table = 'testadd' > >Name = so.StringCol() >BufferSize = so.FloatCol( default = 0.0 ) > >def _set_BufferSize(self, value): >if value != self._SO_get_BufferSize(): >value = 1.0 >self._SO_set_BufferSize(value) > >def _get_BufferSize(self): >return self._SO_get_BufferSize() > > t2=Testadd(Name="test6") You are creating a new row; the row hasn't been instered yet, so it doesn't have an id. But before setting the new value in _set_BufferSize() you ask the database about the previous value. How can SQLObject answer the question without knowing the id of the row? It cannot, hence the error: > This fails with error main.py line 1124 in set > raise AttributeError .. > Testadd object has no attribute 'id' (with attribute 'BufferSize') Oleg. -- Oleg Broytmannhttp://phd.pp.ru/[EMAIL PROTECTED] Programmers don't die, they just GOSUB without RETURN. - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ sqlobject-discuss mailing list sqlobject-discuss@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sqlobject-discuss - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/___ sqlobject-discuss mailing list sqlobject-discuss@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sqlobject-discuss
Re: [SQLObject] LEFTJOINOn and InheritableSQLObject weirdness
> > > > > > sqlobject.dberrors.OperationalError: no such column: animal.cage_id > > > > > > > > > >But there is "cage_id" columnm in the "animal" table > > > > > > > > Well, that's exactly the problem :) > > > > > >Are you sure this part of the problem is in SQLObject and not in > SQLite? > > > (There are probably other problems - inheritance was developed for > simple > > > use cases and hardly support joins and aggregates...) > > > > I only guess that the problem is with SQLObject since SQLite itself is > > pretty reliable. But I'm getting also more and more convinced that > > using inheritance is not a good idea, I ran into other similar > > troubles too. So probably it's best to stay away from them. > > I use inheritance a lot, but I don't usually do JOINs (I just do it the OO > way since I don't have very large sets of data) and it works very well. Hi, can you please test the code below (if you have sqlite)? If you use a different db, can you please change the connectionForURI to use yours and test then? The correct output should be 5 of course. If you don't use joins, how would you select the total number of animals in a zoo in this example? Select (almost) everything and filter through them in python? Thanks a lot, Daniel # from sqlobject import * from sqlobject.inheritance import InheritableSQLObject from sqlobject.sqlbuilder import LEFTJOINOn from sqlobject import connectionForURI sqlhub.processConnection = connectionForURI( 'sqlite:///:memory:', debug=True ) class named( InheritableSQLObject ): name = StringCol( ) class zoo( named ): # class zoo( SQLObject ): # name = StringCol( ) cages = MultipleJoin( 'cage' ) class cage( named ): # class cage( SQLObject ): # name = StringCol( ) animals = MultipleJoin( 'animal' ) zoo = ForeignKey( 'zoo' ) class animal( named ): # class animal( SQLObject ): # name = StringCol( ) cage = ForeignKey( 'cage' ) named.createTable( ) zoo.createTable( ) cage.createTable( ) animal.createTable( ) z = zoo( name='myzoo' ) c1 = cage( name='firstcage', zoo=z ) c2 = cage( name='secondcage', zoo=z ) a11 = animal( name='tiger', cage=c1 ) a12 = animal( name='lion', cage=c1 ) a21 = animal( name='croc', cage=c2 ) a22 = animal( name='hypo', cage=c2 ) a23 = animal( name='fish', cage=c2 ) print '-'*80 joins = [ ] joins.append( LEFTJOINOn( None, cage, animal.q.cageID==cage.q.id ) ) joins.append( LEFTJOINOn( None, zoo, cage.q.zooID==zoo.q.id ) ) print animal.select( zoo.q.name=='myzoo', join=joins ).count( ) - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ sqlobject-discuss mailing list sqlobject-discuss@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sqlobject-discuss
Re: [SQLObject] overriden column trouble
On Mon, Jun 11, 2007 at 04:24:11PM -0400, Stanko Petrovic wrote: > class Testadd(so.SQLObject): >class sqlmeta: >style = so.MixedCaseStyle(longID=True) >table = 'testadd' > >Name = so.StringCol() >BufferSize = so.FloatCol( default = 0.0 ) > >def _set_BufferSize(self, value): >if value != self._SO_get_BufferSize(): >value = 1.0 >self._SO_set_BufferSize(value) > >def _get_BufferSize(self): >return self._SO_get_BufferSize() > > t2=Testadd(Name="test6") You are creating a new row; the row hasn't been instered yet, so it doesn't have an id. But before setting the new value in _set_BufferSize() you ask the database about the previous value. How can SQLObject answer the question without knowing the id of the row? It cannot, hence the error: > This fails with error main.py line 1124 in set > raise AttributeError .. > Testadd object has no attribute 'id' (with attribute 'BufferSize') Oleg. -- Oleg Broytmannhttp://phd.pp.ru/[EMAIL PROTECTED] Programmers don't die, they just GOSUB without RETURN. - This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ ___ sqlobject-discuss mailing list sqlobject-discuss@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sqlobject-discuss
