[Hibernate-issues] [Hibernate-JIRA] Commented: (HB-172) multiple discriminator-value for subclass

[<leg...@at...>]

The following comment has been added to this issue:

     Author: Tom Sedge
    Created: Thu, 10 Jul 2003 8:23 AM
       Body:
I recently wrote a custom persister that allowed this.  I allowed lists (13,14), ranges (20-31), plus greater than and less than options.

Basically I allowed a comma-separated list in the discriminator and created a custom type to map the discriminator as a string.  Then, inside my custom persister I converted this to numeric values and stored my own mapping of discriminator to subclass

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View the issue:

  http://opensource.atlassian.com/projects/hibernate/secure/ViewIssue.jspa?key=HB-172


Here is an overview of the issue:
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        Key: HB-172
    Summary: multiple discriminator-value for subclass
       Type: New Feature

     Status: Unassigned
   Priority: Minor

    Project: Hibernate2
 Components: 
             core
   Versions:
             2.0.2

   Assignee: 
   Reporter: Ludovic Orban

    Created: Thu, 10 Jul 2003 1:59 AM
    Updated: Thu, 10 Jul 2003 1:59 AM
Environment: any/all

Description:
It would be nice to allow a class or a subclass to have multiple possible discriminator values.

Hibernate would need to map the same subclass to multiple values and the resulting unmapped values to the root class (or some other subclass), using a mapping that could look like this:


<class name="pkg.RootObject" table="SOME_TABLE" discriminator-value="*">

...

    <discriminator column="TYPE" type="integer" />

...

    <subclass name="pkg.SubClassA" discriminator-value="12, 13">



    <subclass name="pkg.SubClassB" discriminator-value="45">

</class>



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