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  • Migrate from Spring 2.5 Native ORM TopLink 10g to JPA

    This may be annoying and discussed before but I could not find a good reference which would help to set a direction. I have to plan a migration of TopLink 10g (Spring 2.5 ORM Native Support) to JPA. I need some guidelines (steps) to follow and plan a successful migration.
    Let me brief what I have in my technology stack. Primarily, as I mentioned above, application build around Spring 2.5 and Spring 2.5 Native ORM Support of TopLink. Spring 2.5 bundled to support only up to TopLink 10g and if you simply upgrade the TopLink JAR with the latest version it would not work as latest version of TopLink has completely changed the packaging but this still can be tackled by easily find and replace the package names. The main issue is the native api of TopLink ORM in Spring 2.5 which is built around TopLink 10g.
    The reason of this migration activity is we cannot upgrade Spring until we migrate data-layer to JPA.
    Please share steps if you already achieved something similar in your past or if the above briefing gives you an understanding on the problem you can also drop your opinion on how should I plan this migration.