Comments for chrisspenblog http://www.chrisspen.com/blog knowledge through programming Fri, 30 Jul 2010 15:56:37 +0000 http://wordpress.org/?v=2.5.1 Comment on Handling PostgreSQL Integrity Errors in Django by dbb http://www.chrisspen.com/blog/handling-postgresql-integrity-errors-in-django.html#comment-69 dbb Sat, 27 Mar 2010 07:42:20 +0000 http://www.chrisspen.com/blog/?p=14#comment-69 even after quitting and restarting the python shell... I was still unable to execute a query.. but this cleared it up.. django 1.2 dev even after quitting and restarting the python shell… I was still unable to execute a query.. but this cleared it up..

django 1.2 dev

]]> Comment on Enabling Implicit Cast From Integer To Boolean in PostgreSQL by Chris http://www.chrisspen.com/blog/enabling-implicit-cast-from-integer-to-boolean-in-postgresql.html#comment-67 Chris Fri, 26 Mar 2010 17:01:26 +0000 http://www.chrisspen.com/blog/?p=13#comment-67 @Stefan PG contains an explicit path from int to char and char to int. However, even after I changed this to implicit mode, PG still throws the conversion error "operator does not exist: integer = character" for a simple query like: SELECT NULL WHERE 0=('0'::CHAR). I'm not sure why this path is being treated differently then int-to-bool. However, it's important to note that based on your application, making this change could be dangerous. It might be safer (and easier) to just use the explicit ::int cast on a per-use basis instead of changing database-wide functionality. @Stefan
PG contains an explicit path from int to char and char to int. However, even after I changed this to implicit mode, PG still throws the conversion error “operator does not exist: integer = character” for a simple query like: SELECT NULL WHERE 0=(’0′::CHAR). I’m not sure why this path is being treated differently then int-to-bool.

However, it’s important to note that based on your application, making this change could be dangerous. It might be safer (and easier) to just use the explicit ::int cast on a per-use basis instead of changing database-wide functionality.

]]> Comment on Enabling Implicit Cast From Integer To Boolean in PostgreSQL by Stefan Manastirliu http://www.chrisspen.com/blog/enabling-implicit-cast-from-integer-to-boolean-in-postgresql.html#comment-65 Stefan Manastirliu Fri, 26 Mar 2010 11:49:41 +0000 http://www.chrisspen.com/blog/?p=13#comment-65 Is it possible to do the same thing between text(widh defined length, or char) and int?? Thanks, Stefan Is it possible to do the same thing between text(widh defined length, or char) and int??

Thanks, Stefan

]]> Comment on Handling PostgreSQL Integrity Errors in Django by Marcob http://www.chrisspen.com/blog/handling-postgresql-integrity-errors-in-django.html#comment-25 Marcob Sun, 10 Jan 2010 17:54:14 +0000 http://www.chrisspen.com/blog/?p=14#comment-25 This would have helped and saved me a lot of time :-) I discovered this solution independently and I tried with every combination of transaction, connection, ecc: this was the only workaround that worked. This would have helped and saved me a lot of time :-)

I discovered this solution independently and I tried with every combination of transaction, connection, ecc: this was the only workaround that worked.

]]> Comment on Enabling Implicit Cast From Integer To Boolean in PostgreSQL by Chris http://www.chrisspen.com/blog/enabling-implicit-cast-from-integer-to-boolean-in-postgresql.html#comment-22 Chris Wed, 02 Dec 2009 05:47:03 +0000 http://www.chrisspen.com/blog/?p=13#comment-22 I'm glad you found it useful. According to http://doxygen.postgresql.org/pg__cast_8h-source.html the three allowable values for pg_cast.castcontext are "e", "i", and "a", where "a" specifies "coercion in context of assignment". I’m glad you found it useful.

According to http://doxygen.postgresql.org/pg__cast_8h-source.html the three allowable values for pg_cast.castcontext are “e”, “i”, and “a”, where “a” specifies “coercion in context of assignment”.

]]> Comment on Enabling Implicit Cast From Integer To Boolean in PostgreSQL by GH http://www.chrisspen.com/blog/enabling-implicit-cast-from-integer-to-boolean-in-postgresql.html#comment-21 GH Wed, 02 Dec 2009 05:29:56 +0000 http://www.chrisspen.com/blog/?p=13#comment-21 Thanks for this post, I found it by googling an error message I got while trying to do exactly this type of implicit cast and your code worked like a charm. Besides "e" and "i" are there other options for "castcontext"? Thanks for this post, I found it by googling an error message I got while trying to do exactly this type of implicit cast and your code worked like a charm.

Besides “e” and “i” are there other options for “castcontext”?

]]> Comment on How to Extract a Webpage’s Main Article Content by Gerard Gleeson http://www.chrisspen.com/blog/how-to-extract-a-webpages-main-article-content.html#comment-20 Gerard Gleeson Tue, 01 Dec 2009 11:26:49 +0000 http://www.chrisspen.com/blog/?p=6#comment-20 I implemeted a very similar idea in java a while ago, while not even nearly as this it might help people http://www.redbrick.dcu.ie/~gleesog4/Projects/page.html#extractmainarticle I implemeted a very similar idea in java a while ago, while not even nearly as this it might help people
http://www.redbrick.dcu.ie/~gleesog4/Projects/page.html#extractmainarticle

]]> Comment on Handling PostgreSQL Integrity Errors in Django by Stephen http://www.chrisspen.com/blog/handling-postgresql-integrity-errors-in-django.html#comment-17 Stephen Tue, 06 Oct 2009 22:01:35 +0000 http://www.chrisspen.com/blog/?p=14#comment-17 Thanks, this helped me! Thanks, this helped me!

]]> Comment on How to Extract a Webpage’s Main Article Content by a http://www.chrisspen.com/blog/how-to-extract-a-webpages-main-article-content.html#comment-14 a Fri, 02 Oct 2009 21:29:26 +0000 http://www.chrisspen.com/blog/?p=6#comment-14 seems to only pull out the comments for some pages. example: http://www.cbsnews.com/blogs/2009/10/02/politics/politicalhotsheet/entry5359359.shtml seems to only pull out the comments for some pages. example:
http://www.cbsnews.com/blogs/2009/10/02/politics/politicalhotsheet/entry5359359.shtml

]]> Comment on How to Extract a Webpage’s Main Article Content by Dave http://www.chrisspen.com/blog/how-to-extract-a-webpages-main-article-content.html#comment-10 Dave Fri, 22 May 2009 16:43:47 +0000 http://www.chrisspen.com/blog/?p=6#comment-10 Yes it seems strange you would go to all this effort, but not publish the code. I too would appreciate looking at the code Yes it seems strange you would go to all this effort, but not publish the code.

I too would appreciate looking at the code

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