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http://opensource.atlassian.com/projects/hibernate/browse/HHH-3240?page=c...
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Alexandra Wamb commented on HHH-3240:
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Hi Strong Liu,
As far as I know the hibernate TEXT type is mapped to either a SQL TEXT or CLOB type. All
drivers I've experienced (like MySQL, Oracle, HSQL, MS SQL Server) are mapped to the
TEXT type correctly - only Derby does not, (mapping to LONGVARCHAR instead) and so is
inconsistent with the rest.
I fully agree with your statement that "[...] we should deal with all of DB
type.", but I cannot understand why the mapping for derby deviates from other
mappings. Maybe is it because hibernate says that CLOB shouldn't be used in general? I
certainly think that a mapping from hibernate TEXT to SQL CLOB makes more sense.
Will the mapping stay as it is, or do you know of any attempts to change it?
Thanks, Alexandra
Btw. I found nothing about "material_clob". Could you provide further
information?
In Derby field type 'text' is converted to CLOB(255)
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Key: HHH-3240
URL:
http://opensource.atlassian.com/projects/hibernate/browse/HHH-3240
Project: Hibernate Core
Issue Type: Bug
Components: core
Affects Versions: 3.1
Environment: Hibernate 3.1, Derby 10.3.2.1
Reporter: Aleksander Rozman
Assignee: Strong Liu
Fix For: 3.5.0.Beta-1, 3.5.0-Beta-2, 3.5.0-Beta-3
When using type 'text' this is incorectly converted to CLOB(255). Derby has
several long var char types which could be used instead, but instead it's defaulted to
clob(255).
I have taken a look at source from 3.1 and 3.2.6 (latest) and this code is still the
same... I think that just little fix in DerbyDialect would be enough... I would try this
myself but I am currently lacking time and resources.
I hope this will be taken care of as soon as it gets...
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