tree dd9efeb05f006928a4c136689b6b33ed0be8e5f6
parent 40986c16aa76c0acf42326fa0bd69d710a858f3e
author jarodwen@gmail.com <jarodwen@gmail.com@123451ca-8445-de46-9d55-352943316053> 1323219264 +0000
committer jarodwen@gmail.com <jarodwen@gmail.com@123451ca-8445-de46-9d55-352943316053> 1323219264 +0000

Update issue #52:

Added new aggregator interfaces and group operator implementations, in order to merge the old interfaces.

A simple integer sum aggregator is added to show the usage of the new interfaces.

git-svn-id: https://hyracks.googlecode.com/svn/branches/aggregators_dev_next@860 123451ca-8445-de46-9d55-352943316053