I have an one-to-one relationship (hasOne in User domain and belongsTo in UserInfo domain). When the BootStrap is executing I get an exception:
org.compass.core.converter.ConversionException: Trying to marshall a null id [id] for alias [UserInfo]
this line of code produces it:
def user = new User(....., new UserInfo()).save()
According to Peter Ledbrook, this is a non-trivial conflict between Hibernate and Searchable: http://jira.grails.org/browse/GPSEARCHABLE-19
The solution is to turn off mirroring in the Searchable plugin and handle updating indexes manually.