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Posted to torque-dev@db.apache.org by "Thomas Fischer (JIRA)" <ji...@apache.org> on 2006/06/21 22:48:30 UTC
[jira] Assigned: (TORQUE-32) Native id-method columns in hsqldb
start with 0
[ http://issues.apache.org/jira/browse/TORQUE-32?page=all ]
Thomas Fischer reassigned TORQUE-32:
------------------------------------
Assign To: Thomas Fischer
> 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
> Assignee: Thomas Fischer
> 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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