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Date: Tue, 20 Jun 2006 03:48:31 +0000 (GMT+00:00)
From: "Scott Eade (JIRA)" <jira@apache.org>
To: torque-dev@db.apache.org
Subject: [jira] Updated: (TORQUE-32) Native id-method columns in hsqldb
 start with 0
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     [ http://issues.apache.org/jira/browse/TORQUE-32?page=all ]

Scott Eade updated TORQUE-32:
-----------------------------

    Attachment: PlatformDefaultImpl.java.patch
                PlatformHypersonicImpl.java.patch

> 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
>  Attachments: Column.java.patch, HypersonicDomainTest.java.patch, Platform.java.patch, PlatformDefaultImpl.java.patch, PlatformHypersonicImpl.java.patch
>
> 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 AS IDENTITY (STARTING WITH 0)".
> 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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