[hibernate-issues] [Hibernate-JIRA] Updated: (HBX-1067) [SchemaExport] Duplicate unique constraint with unique="true" and natural-id

[Vincent Ricard (JIRA)]

     [ http://opensource.atlassian.com/projects/hibernate/browse/HBX-1067?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vincent Ricard updated HBX-1067:
--------------------------------

    Issue Type: Patch  (was: Bug)

> [SchemaExport] Duplicate unique constraint with unique="true" and natural-id
> ----------------------------------------------------------------------------
>
>                 Key: HBX-1067
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HBX-1067
>             Project: Hibernate Tools
>          Issue Type: Patch
>    Affects Versions: 3.2.0.GA
>         Environment: Hibernate 3.2.5, MySQL 5.0.51 (InnoDB), Java 1.5
>            Reporter: Vincent Ricard
>            Priority: Minor
>         Attachments: HBX-1067.patch
>
>
> In my foo.hbm.xml, if i put this:
> 	<natural-id>
> 		<property name="barId" column="bar_id" not-null="true" length="128"/>
> 	</natural-id>
> SchemaExport creates this:
> create table foo (id bigint not null auto_increment, version integer not null, bar_id varchar(128) not null, primary key (id), unique (bar_id)) ENGINE=InnoDB;
> And MySQL creates only one index for bar_id.
> But, if my foo.hbm.xml contains this:
> 	<natural-id>
> 		<property name="barId" column="bar_id" not-null="true" unique="true" length="128"/>
> 	</natural-id>
> SchemaExport generates this:
> create table foo (id bigint not null auto_increment, version integer not null, bar_id varchar(128) not null unique, primary key (id), unique (bar_id)) ENGINE=InnoDB;
> And MySQL creates 2 indices for bar_id.
> So, i think it'd be cool if schemaexport was smarter (even if MySQL could be too).

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