Grasshopper: an orthogonally persistent operating system
Computing Systems
An orthogonally persistent Java
ACM SIGMOD Record
The object database standard: ODMG 2.0
The object database standard: ODMG 2.0
Efficient transparent application recovery in client-server information systems
SIGMOD '98 Proceedings of the 1998 ACM SIGMOD international conference on Management of data
Making the future safe for the past: adding genericity to the Java programming language
Proceedings of the 13th ACM SIGPLAN conference on Object-oriented programming, systems, languages, and applications
Java Foundation Classes
Concurrent Programming in Java: Design Principles and Patterns
Concurrent Programming in Java: Design Principles and Patterns
Java Virtual Machine Specification
Java Virtual Machine Specification
The Java Language Specification
The Java Language Specification
Transaction Processing: Concepts and Techniques
Transaction Processing: Concepts and Techniques
Orthogonally persistent object systems
The VLDB Journal — The International Journal on Very Large Data Bases - Persistent object systems
Constructing Database Systems in a Persistent Environment
VLDB '87 Proceedings of the 13th International Conference on Very Large Data Bases
Partial Redundancy Elimination for Access Path Expressions
Proceedings of the Workshop on Object-Oriented Technology
Optimizing the Read and Write Barriers for Orthogonal Persistence
Proceedings of the 8th International Workshop on Persistent Object Systems (POS8) and Proceedings of the 3rd International Workshop on Persistence and Java (PJW3): Advances in Persistent Object Systems
Orthogonal Persistence for Java? - A Mid-term Report
Proceedings of the 8th International Workshop on Persistent Object Systems (POS8) and Proceedings of the 3rd International Workshop on Persistence and Java (PJW3): Advances in Persistent Object Systems
The First Experience of Class Evolution Support in PJama
Proceedings of the 8th International Workshop on Persistent Object Systems (POS8) and Proceedings of the 3rd International Workshop on Persistence and Java (PJW3): Advances in Persistent Object Systems
Swizzle Barrier Optimizations for Orthogonal Persistence in Java
Proceedings of the 8th International Workshop on Persistent Object Systems (POS8) and Proceedings of the 3rd International Workshop on Persistence and Java (PJW3): Advances in Persistent Object Systems
Reconciling Buffer Management with Persistence Optimisations
Proceedings of the 8th International Workshop on Persistent Object Systems (POS8) and Proceedings of the 3rd International Workshop on Persistence and Java (PJW3): Advances in Persistent Object Systems
Proceedings of the 8th International Workshop on Persistent Object Systems (POS8) and Proceedings of the 3rd International Workshop on Persistence and Java (PJW3): Advances in Persistent Object Systems
Concurrency - The Fly in the Ointment?
Proceedings of the 8th International Workshop on Persistent Object Systems (POS8) and Proceedings of the 3rd International Workshop on Persistence and Java (PJW3): Advances in Persistent Object Systems
Towards Scalable and Recoverable Object Evolution for the PJama Persistent Platform
Proceedings of the International Symposium on Objects and Databases
Scalable and Recoverable Implementation of Object Evolution for the PJama1 Platform
POS-9 Revised Papers from the 9th International Workshop on Persistent Object Systems
Defining and Handling Transient Fields in PJama
DBPL '99 Revised Papers from the 7th International Workshop on Database Programming Languages: Research Issues in Structured and Semistructured Database Programming
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Orthogonal persistence is based on three principles that have been understood for nearly 20 years. PJama is a publically available prototype of a Java platform that supports orthogonal persistence. It is already capable of supporting substantial applications. The experience of applying the principles of orthogonal persistence to the Java programming language is described in the context of PJama. For example, issues arise over achieving orthogonality when there are classes that have a special relationship with the Java Virtual Machine. The treatment of static variables and the definition of reachability for classes and the handling of the keyword transient also pose design problems. The model for checkpointing the state of a computation, including live threads, is analyzed and related to a transactional approach. The problem of dealing with state that is external to the PJama environment is explained and the solutions outlined. The difficult problem of system evolution is identified as a major barrier to deploying orthogonal persistence for the Java language. The predominant focus is on semantic issues, but with concern for reasonably efficient implementation. We take the opportunity throughout the paper and in the conclusions to identify directions for further work.