grails-plugins/grails-database-migration — pull request #12 by edgescope (2012-05-30 04:35:24+00:00)
Title: GPDATABASEMIGRATION-78 - allow objects to be ignored by gorm-diff scripts

The original jira issue is asking for unexpected tables to be ignored. My problem was that I needed some transient domain objects, and didn't want to accidentally put them in the database.
I referenced the liquibase DiffResult class for ideas on objects that should be ignorable.