[Hibernate-issues] [Hibernate-JIRA] Commented: (HB-27) Persistent String Enum

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The following comment has been added to this issue:

     Author: Gavin King
    Created: Sat, 6 Sep 2003 11:54 PM
       Body:
OK, the implementation is perfect. I just can't seem to decide b/w two possible courses of action:


(1) accept this patch
(2) deprecate PersistentEnum entirely and tell people to _always_ use a UserType, which eliminates domain model dependencies upon Hibernate


The purist approach is definately (2), but PersistentEnum IS kinda convenient...
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  http://opensource.atlassian.com/projects/hibernate/secure/ViewIssue.jspa?key=HB-27


Here is an overview of the issue:
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        Key: HB-27
    Summary: Persistent String Enum
       Type: Patch

     Status: Assigned
   Priority: Minor

    Project: Hibernate2

   Assignee: Gavin King
   Reporter: Max Rydahl Andersen

    Created: Sat, 3 May 2003 10:15 AM
    Updated: Thu, 15 May 2003 4:38 AM

Description:
Persistent String Enum
PersistentEnum type is a very userfull feature, but in 
the legacy data world it happens that some enumerations 
are stored in "char" columns instead of integer and, as 
far as I understood, I can map a persistent enumeration 
only with integer. 
Mapping my existing data I found several char(2) fields 
that would be nice to map with an enumeration. I tried 
to write a patch in order to manage such fields 
introducing a new Hibernate type 
PersistentStringEnumType and an interface 
PersistentStringEnum that one can use as the existing 
PersistenEnum interface. 

Please, find the modified classes (TypeFactory, 
MappingByReflection, Hibernate) and the new one 
(PersistentStringEnum, PersistentEnum) in the attached 
zip (for Hibernate 1.2) 

(BTW: Does someone know a simple way to make a patch 
against CVS?) 

It also contains a test case for the feature. The test 
sources explain how to use it. 

http://sourceforge.net/tracker/index.php?func=detail&aid=684810&group_id=40712&atid=428711

The lenght of the field must be declared in the mapping 
through the attribute in the <property> tag. 
I would be nice if we could set it somewhere in the 
class that define the PersistentStringEnum, but I can't 
realize if it's possible. 

stefano 

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