[rules-users] JTA Persistence, Fact Objects and High Availability

Hi, I'm looking at the possibility of using Drools to store the working state of my app, in the form of rules. Can JTA Persistence store fact objects? I read that the fact objects must be Serializable - are there other requirements or caveats? Can JTA Persistence take care of High Availability? Even if the system goes down in the middle of a rules computation? Assuming the database handling the JPA is a HA system. Thanks! Miguel