1. Home
  2. Programming
  3. Java data objects

15.7 Rollback

At rollback, persistent-nontransactional instances do not change their state. If instances have been read nontransactionally, they remain in the persistent-nontransactional state at rollback.

At rollback, persistent transactional instances transition to new states, based on the setting of the RestoreValues flag. There is no difference between datastore and optimistic transactions in this regard.



    		Chapter 1. An Initial Tour
    		Chapter 2. An Overview of JDO Interfaces
    		Chapter 3. JDO Architectures
    		Chapter 4. Defining Persistent Classes
    		Chapter 5. Datastore Mappings
    		Chapter 6. Class Enhancement
    		Chapter 7. Establishing a JDO Runtime Environment
    		Chapter 8. Instance Management
    		Chapter 9. The JDO Query Language
    		Chapter 10. Identity
    		Chapter 11. Lifecycle States and Transitions
    		Chapter 12. Field Management
    		Chapter 13. Cache Management
    		Chapter 14. Nontransactional Access
    		Chapter 15. Optimistic Transactions
    		15.1 Verification at Commit
    		15.2 Optimistic Transaction State Transitions
    		15.3 Deleting Instances
    		15.4 Making Instances Transactional
    		15.5 Modifying Instances
    		15.6 Commit
    		15.7 Rollback
    		Chapter 16. The Web-Server Environment
    		Chapter 17. J2EE Application Servers
    		Appendix A. Lifecycle States and Transitions
    		Appendix B. JDO Metadata DTD
    		Appendix C. JDO Interfaces and Exception Classes
    		Appendix D. JDO Query Language BNF
    		Appendix E. Source Code for Examples