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[eclipselink-dev] SVN main commit: Bug#211700 - batch fetching support using IN

SVN main commit: Bug#211700 - batch fetching support using IN

 

https://bugs.eclipse.org/bugs/show_bug.cgi?id=211700

 

Code review: Andrei (pending)

 

Changes:

- Some cleanup, @Overrides, removed some dead code, some optimizations

- Switched to track batch queries in uow instead of objects.

- Fixed ObjectChangeSet compareTo to be consistent for nulls

- Added batch fetch IN support to mappings, refactored batch fetching in mappings to avoid duplicate code

  - All mappings types that support batch fetching support IN

  - IN currently requires singleton pk

  - batch size is configurable, cursors are supported

- Added row tracking in BatchFetchPolicy for IN support

- Added JPA batch fetching tests