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swordsman
 Post subject: What is definition of HiLo sequence table?
PostPosted: Fri Nov 07, 2003 5:26 pm 
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Joined: Wed Oct 08, 2003 4:22 pm
Posts: 29
Need the DDL so can create in Teradata database (can't find anywhere in the 116 page reference PDF or by searching)

thx
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gavin
 Post subject:
PostPosted: Fri Nov 07, 2003 5:34 pm 
Hibernate Team
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Joined: Tue Aug 26, 2003 12:50 pm
Posts: 5130
Location: Melbourne, Australia
Code:
public class TableGenerator implements PersistentIdentifierGenerator, Configurable {
        ......

   public String[] sqlCreateStrings(Dialect dialect) throws HibernateException {
      return new String[] {
         "create table " + tableName + " ( " + columnName + " " + dialect.getTypeName(Types.INTEGER) + " )",
         "insert into " + tableName + " values ( 0 )"
      };
   }


}
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swordsman
 Post subject:
PostPosted: Fri Nov 07, 2003 5:48 pm 
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Thanks Gavin!

So does it create 1 table per O/R mapped class?
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gavin
 Post subject:
PostPosted: Fri Nov 07, 2003 5:51 pm 
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Joined: Tue Aug 26, 2003 12:50 pm
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Location: Melbourne, Australia
The table and column name are specified by <param> elements in the <id> mapping. Otherwise there is a default for all classes.
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swordsman
 Post subject:
PostPosted: Fri Nov 07, 2003 5:54 pm 
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Joined: Wed Oct 08, 2003 4:22 pm
Posts: 29
Okay, thanks.

However, think I see a problem for our configuration:
1) underlying database doesn't support SEQUENCEs.
2) we're using an App Server (JBoss)

*TableHiLoGenerator says it can't be used in App Server environment.

*SequenceHiLoGenerator says it needs underlying oracle-style sequence function


Am I SOL?
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gavin
 Post subject:
PostPosted: Fri Nov 07, 2003 6:04 pm 
Hibernate Team
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Joined: Tue Aug 26, 2003 12:50 pm
Posts: 5130
Location: Melbourne, Australia
Have you looked at "session bean hilo generator" pattern on the wiki?
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swordsman
 Post subject:
PostPosted: Fri Nov 07, 2003 6:06 pm 
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Posts: 29
will take a look, thanks -
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