[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-2718) CLONE -Mapping DTD has changed from 3.0. A 3.1 version should be released and made available

[Markus Maier (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HHH-2718?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_27444 ] 

Markus Maier commented on HHH-2718:
-----------------------------------

First, I hope cloning this issue was the right thing to do.

The problem I have is that the mapping DTD has changed in an* incompatible* way: the lazy attribute for many-to-one can have the values (true|false|proxy) according to the hibernate-mapping-3.0.dtd found in hibernate3.jar of the Hibernate 3.0.5 distribution, while http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd specifies (false|proxy|no-proxy).
This results in XML editors (and the Hibernate Tools Eclipse plugin) using one kind of definition while Hibernate itself uses another kind. I know that this will not be easy to fix, but please at least try to avoid such mistakes in the future.

> CLONE -Mapping DTD has changed from 3.0. A 3.1 version should be released and made available
> --------------------------------------------------------------------------------------------
>
>                 Key: HHH-2718
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2718
>             Project: Hibernate3
>          Issue Type: Bug
>    Affects Versions: 3.1 beta 2
>         Environment: All
>            Reporter: Markus Maier
>
> The Hibernate mapping DTD has changed in at least 1 detail, the lazy attribute of the various Hibernate collections elements now supports {true, false, extra} rather than only {true, false} as in 3.0.
> I realize that you ship the DTD's in the Hibernate jars, so the differences are not likely to effect the code, but XML editing tools will probably declare otherwise valid documents invalid, since they are likely to access the DTD via the web rather than the jar.
> If the DTD references in the distributed hbm.xml files were modified then all of the changes would be in sync.

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