[ http://opensource.atlassian.com/projects/hibernate/browse/HHH-1483?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_26740 ]
David commented on HHH-1483:
----------------------------
I had this issue when running a native query. The dialect I was using was MySQLInnoDBDialect.. It had an issue with a 'text' column. I subclassed MySQLInnoDBDialect and did this
registerColumnType(Types.LONGVARCHAR, 65535, "text");
After debugging for a while I found it was actually getting the issue when going into getHibernateTypeName, not getTypeName. Ths register method above affects getTypeName, not getHibernateTypeName. Because of this I instead wrote
registerHibernateType(Types.LONGVARCHAR, 65535, "text");
This took care of my problem. Being the first time I have ever looked at Hibernate's source I have no idea if this is what I should be doing. Looking further I believe the fix to this issue (AGAIN 1st time looking at source) is to add the following to the constructor of org.hibernate.dialect./Dialect (Note I didn't test this approach but looking at the code it should surely fix the problem)
registerHibernateType( Types.LONGVARCHAR, Hibernate.STRING.getName() ); // TODO: Check make sure the 2nd arg is right
I am not sure if the second argument is what it should be -- I really have no idea what the difference between hibernateTypeNames and typeNames is suppose to be but I hope this helps someone fix this issue.
In my opinion this is a large bug and should be high priority since "text" is a very commonly used type and used by default when hibernate creates tables for you.
> MySQL5: No Dialect mapping for JDBC type: -1
> --------------------------------------------
>
> Key: HHH-1483
> URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-1483
> Project: Hibernate3
> Issue Type: Bug
> Components: core
> Affects Versions: 3.1.2
> Environment: MySQL 5.0.18-nt
> Reporter: Sergey Vladimirov
> Priority: Minor
>
> MySQL5: No Dialect mapping for JDBC type: -1
> SELECT answpos,answer FROM votes_answers WHERE question=? ORDER BY answpos
> mysql> describe votes_answers;
> +----------+---------+------+-----+---------+-------+
> | Field | Type | Null | Key | Default | Extra |
> +----------+---------+------+-----+---------+-------+
> | question | int(11) | NO | MUL | | |
> | answpos | int(11) | NO | | | |
> | answer | text | YES | | NULL | |
> +----------+---------+------+-----+---------+-------+
> mysql> describe temp;
> +---------+---------+------+-----+---------+-------+
> | Field | Type | Null | Key | Default | Extra |
> +---------+---------+------+-----+---------+-------+
> | answpos | int(11) | NO | | 0 | |
> | answer | text | YES | | NULL | |
> +---------+---------+------+-----+---------+-------+
> Please, let me know what to add to MySQL5Dialect :)
> Will it be ok to add? :
> registerColumnType( Types.LONGVARCHAR, "text" );
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