Does this mean, we must provide these triggers in ALL table setups? I
want all TIMESTAMP columns in all the tables in my database to be
inflated into My::DateTime objects. How to specify
such a behavior? My::DateTime is a subclass of good old DateTime so I'm hoping
this should
be doable with minimum of hassle?
thx
- Praveen
----- Original Message ----
From: John Siracusa <[EMAIL PROTECTED]>
To: Rose-DB-Object <rose-db-object@lists.sourceforge.net>
Sent: Tuesday, January 23, 2007 11:30:26 PM
Subject: Re: [RDBO] Inflate Columns to User Defined Class
On 1/23/07 11:21 PM, Praveen Ray wrote:
> How would I make RDBO inflate a particular column to a user defined class?
> Instead of the built-in? For example, I'd like a BYTEA column to be inflated
> into my own class. I'm guessing somewhere in the $meta->setup call, I should
> be able to specify it but didn't find an example to do it.
You can, of course, write your own column class and map it to a particular
type name, but that's a bit of an undertaking. If you just want to modify
an existing column class, use column triggers:
http://search.cpan.org/dist/Rose-DB-Object/lib/Rose/DB/Object/Metadata/Colum
n.pm#TRIGGERS
In this case, the inflate and deflate events are the ones you want. And
yes, you can do this right in the column definition in your setup() call:
http://search.cpan.org/dist/Rose-DB-Object/lib/Rose/DB/Object/Metadata.pm#ad
d_columns
"If the hash contains a key with the same name as a column trigger event
type (e.g., "on_set", "on_load", "inflate") then the value of that key must
be a code reference or a reference to an array of code references, which
will be added to the list of the column's triggers for the specified event
type."
-John
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