Dave Johnson on open web technologies, social software and Java
Castor OIL, the GUI tool for creating Castor JDO mappings from existing database tables, has been brought back to life by Peter Kasson. It was originally written by Lance Lavandowska and donated to the Castor project.[Bruce Synder on the castor-dev mailing list]As you can see below, Castor OIL takes a different approach than JDOMapper.
JDOMapper provides a user interface for creating Castor JDO mapping files. The application allows user to import Java classes and map them to an Relational schema . The tool performs series of validations to ensure that classes and fields are correctly mapped. Existing mapping files can also be imported into the tool. [JDOMapper]