Ismael,
Thanks for the feedback, it's always very useful to us. You should be able use stored procedures for updates - see the MapCallableStatementWriter (and corresponding map-stored-proc-writer.xml example, and their XML equivalents). In fact, if you can guarantee that the warehouse will always be based on Oracle it might be easiest to implement the 'upsert' funtionality in a stored procedure which the JDBC writer would invoke.

Having said that, with your comments in mind, we are looking at adding direct support for updates (and possibly 'upserts') with a view towards squeezing it into our upcoming 3.4.3 (November '08) release of openadaptor.

Also it's worth noting that the RawSQLWriter can achieve the same effect - it uses actual SQL strings which get directly executed against the db, albeit with a performance penalty (overhead of constructing the SQL manually, and not being able to compile it).

regards
Eddy Higgins, Kris Lachor (& the openadaptor dev team)

P.S. Note that www.openadaptor.org is the primary resource for openadaptor technical support. This affords the best visibility to the dev team, and other oa users.

Great article. Great tool. It seems a good fit to a new project I'm involved with.

The project will require extracting data from a ERP system to load into a data warehouse. The ERP system uses a DB2 UDB database, while the data warehouse will be based on an Oracle database. On a daily basis, it is necessary to extract all the new or updated records from selected tables on our ERP database to load on the data warehouse.

From the documentation and the samples, I found that it is very easy to INSERT data in a table, but could not find references to table UPDATES, or more specifically to the situation where an input record may be updating the corresponding record in the target table if it already exists, otherwise it will be inserted on the target table.

What would be the best approach to resolve this "UPSERT" type of problem using Openadaptor?

Many thanks for the help

Ismael