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From "Thomas Vandahl (JIRA)" <j...@apache.org>
Subject [jira] Closed: (TORQUE-32) Native id-method columns in hsqldb start with 0
Date Sun, 26 Nov 2006 18:25:04 GMT
     [ http://issues.apache.org/jira/browse/TORQUE-32?page=all ]

Thomas Vandahl closed TORQUE-32.
--------------------------------


> Native id-method columns in hsqldb start with 0
> -----------------------------------------------
>
>                 Key: TORQUE-32
>                 URL: http://issues.apache.org/jira/browse/TORQUE-32
>             Project: Torque
>          Issue Type: Bug
>          Components: Generator
>         Environment: Any.
>            Reporter: Scott Eade
>         Assigned To: Thomas Fischer
>            Priority: Minor
>             Fix For: 3.3
>
>         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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