Hi
I use inheritance in a few places, it is a very neat feature - you
should probably look at the documentation but I can give you a simple
example:
I have a table that holds the information used to purge historic data,
the name of objects to purge, the age, purge executor type and
additional data.
<table name="PURGE_SETUP" description="">
<column
name="PURGE_SETUP_ID"
required="true"
primaryKey="true"
type="INTEGER"
description="Id"/>
<column
name="PURGE_EXECUTOR_TYPE"
type="TINYINT"
required="true"
default="0"
description="0 for sql, 1 for java"
inheritance="single"
>
<inheritance key="0" class="SqlPurgeExcutor" />
<inheritance key="1" class="JavaPurgeExcutor" />
</column>
<column
name="OBJECT_NAME"
type="VARCHAR"
size="255"
required="true"
description="Table name for type sql, class name for type java"
/>
<column
name="ADDITIONAL_INFO"
type="VARCHAR"
size="255"
description="Addtional where clause for sql, Method name for java"
/>
<column
name="AGE"
type="INTEGER"
required="true"
description=""
/>
<column
name="OBJECT_DESC"
type="VARCHAR"
size="255"
description="A Name for user interface"
/>
</table>
When I use Torque to retrieve data from this table the list I get
contains objects of type SqlPurgeExcutor or JavaPurgeExcutor according
to the value of PURGE_EXECUTOR_TYPE.
Hope this helps.
Guy
On Sun, 2005-11-20 at 21:54 +0100, Jakub Piechnik wrote:
> Hello
>
> Has anyone can tell me anything about inheritance in torque schema? I
> know that there is a key-word inheritance, but what exactly menas key,
> class, single, etc in this?
>
> I have a table with 6 columns - one of which is boolean for distinguish
> which class should be created of inserted data. Both two classes use the
> same fields - so - can You tell me, how should I set it up in torque?
>
> I would be vere grateful for any help
>
> Greetings
> Jakub Piechnik
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: [EMAIL PROTECTED]
> For additional commands, e-mail: [EMAIL PROTECTED]
>
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
