We demonstrate how to safely and effectively implement transactions following an aspect-oriented paradigm using our proposed extension of AspectJ, Explicit Join Points.

1. Aspect-oriented Transactions
via Explicit Join Points
Kevin Hoffman / Patrick Eugster

2. Outline
 Review of Transactions
 Review of Aspects
 AOP Methods for Transactions
 Discussion of problems
 New Approach
 The good, the bad, and the unknown
 The next step
Kevin Hoffman and Patrick Eugster, DSN’06 (Handout) -2-

3. Review of Transactions
 Transactions provide:
 (A)tomicity – all or nothing
 (C)onsistency – deterministic data changes
 (I)solation – appears concurrency not present
 (D)urability – finished results never lost
Kevin Hoffman and Patrick Eugster, DSN’06 (Handout) -3-