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From Michael Bouschen <...@apache.org>
Subject Re: DN support for derby sequences
Date Thu, 08 Mar 2012 20:44:58 GMT
Hi Andy,

the database schema now includes the definition of the sequence used by 
the test cases in detach.conf. So I thought I could run the tck w/o the 
datanuclues auto create table feature. I changed the jdori-pmf.properties to

But the test cases fail, because it tries to create the sequence 
included in the schema definition:
   Could not create new "sequence" DATASTORE_SEQ since autoCreate flags 
do not allow it.

Any idea why the existing sequence is not used? I double-checked the 
schema and the mapping metadata, but cannot find anything.

You find the datanucleus logging output attached below.

Regards Michael

> Hi Andy,
> thanks for the links.
> I added a DN JIRA: 
> http://www.datanucleus.org/servlet/jira/browse/NUCRDBMS-581 and 
> attached a patch for the DerbyAdapter class. I also added a patch to 
> the JDO JIRA https://issues.apache.org/jira/browse/JDO-682 changing 
> the schema and the mapping to make use of sequences in derby. So the 
> configuration detach.conf will test the DN support for sequences in 
> derby.
> Regards Michael
>>> Is it an issue to support sequences in the derby adapter? The derby
>>> database itself supports sequences since version 10.6.
>> Hi Michael,
>> you can easily contribute support.
>> The adapter for Derby at
>> http://datanucleus.svn.sourceforge.net/viewvc/datanucleus/platform/store.rdbms/trunk/src/java/org/datanucleus/store/rdbms/adapter/DerbyAdapter.java?revision=14093&view=markup

>> needs updating to include support for versions 10.6+ (only).
>> To see an example of an adapter which has support look at
>> http://datanucleus.svn.sourceforge.net/viewvc/datanucleus/platform/store.rdbms/trunk/src/java/org/datanucleus/store/rdbms/adapter/HSQLAdapter.java?revision=11607&view=markup

>> and search for "sequence" (case-insensitive); ought to give you 
>> enough of an
>> idea what is needed. Then raise a DN JIRA and attach a patch.

*Michael Bouschen*

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