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From "Scott Eade (JIRA)" <j...@apache.org>
Subject [jira] Commented: (TORQUE-32) Native id-method columns in hsqldb start with 0
Date Tue, 20 Jun 2006 03:44:30 GMT
    [ http://issues.apache.org/jira/browse/TORQUE-32?page=comments#action_12416842 ] 

Scott Eade commented on TORQUE-32:

Some, but not all of the changes in the attached patch have been committed.

I thought it best to at least store the detail here until a Hypersonic user can confirm whether
or not the rest of the patch needs to be applied.


> Native id-method columns in hsqldb start with 0
> -----------------------------------------------
>          Key: TORQUE-32
>          URL: http://issues.apache.org/jira/browse/TORQUE-32
>      Project: Torque
>         Type: Bug

>   Components: Generator
>  Environment: Any.
>     Reporter: Scott Eade
>     Priority: Minor

> Using hsqldb with id-method native columns creates columns defined with the constraint
"IDENTITY". This generated an index starting with 0. As Torque regards objects with an primary
key 0 as not initialized, this can lead to problems when using relationships between tables.

> To prevent this I've patched the generated string from "IDENTITY" to "GENERATED BY DEFAULT
> This broke the created SQL for hsqldb tables since Torque preprends the String "NOT NULL"
in front of the identity string. hsqldb does not allow this.
> To change this I've patched the interface org.apache.torque.engine.platform.Platform
and added a method "public getNullString(Column col)" since the PlatformHypersonicImpl needed
to know if the column is a not null and if the column uses the native id-method. The default
implementation of Platform delegates the call of this method to the former existing one. Only
the hsqldb implementation uses more than the property notNull of the column.
> The new method is now used getSqlString of class Column.

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