Hi Jeffrey,
On Apr 20, 2011, at 11:13 AM, Jeffrey Simpson wrote:
> Thanks for the responses from my previous email DB2 Plugin testing.
>
> I am working on the SQL Generation and so I looked at the sql generated from
> the MySql Plugin and the Postgress plugin. I have a question related to PK
> generation support. Here is a sample of the generated sql:
>
> CREATE SEQUENCE Employee_seq;
>
> CREATE TEMP TABLE EOF_TMP_TABLE AS SELECT SETVAL('Employee_seq', (SELECT
> MAX(id) FROM Employee));
>
> DROP TABLE EOF_TMP_TABLE;
>
> ALTER TABLE Employee ALTER COLUMN id SET DEFAULT nextval( 'Employee_seq' );
>
> In the Create table and alter table scripts there is are 2 function calls
> setval and nextval. Are these user defined functions? If they are are there
> any examples?
I think those are db specific. You need to figure out what you want it to emit
for DB2, then look at
com.webobjects.eoaccess.synchronization.EOSchemaSynchronizationFactory
You will want a sub-class of this in your plugin, see public
EOSchemaSynchronizationFactory createSchemaSynchronizationFactory() in
JDCBPlugin. You can override the methods to produce appropriate SQL for DB2.
Chuck
--
Chuck Hill Senior Consultant / VP Development
Practical WebObjects - for developers who want to increase their overall
knowledge of WebObjects or who are trying to solve specific problems.
http://www.global-village.net/products/practical_webobjects
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