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  1. OpenMRS Core
  2. TRUNK-5375

New Core 2.1 Cohort module significantly slows down Cohort manipulation

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      A Cohort in core used to be solely a set of integers. In 2.1 a Cohort so that each element was a new "CohortMembership" element, that contained both an id and a date range.

      This significantly increased operations on Cohorts... for instance adding thousands of ids to a Cohort could take minutes instead of milliseconds... this is prohibitively costly for reports, so we need to either create a simpler Cohort model in reporting to use instead of the more complex one in core, or change the one in core to perform better.

      fyi mseaton

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            is related to

            Bug - A problem which impairs or prevents the functions of the product. TRUNK-5379 Cohort Membership: Resolve design inconsistents

            • Should - Issue should be completed for its milestone; however, will not delay the milestone.
            • Closed

            Bug - A problem which impairs or prevents the functions of the product. TRUNK-5211 Cohort membership should allow null start date, and should default to this

            • TBD - To Be Determined. Prioritization is not yet established.
            • Closed
            relates to

            Bug - A problem which impairs or prevents the functions of the product. TRUNK-5380 Cohort Membership: Performance Issues

            • TBD - To Be Determined. Prioritization is not yet established.
            • Closed

            Bug - A problem which impairs or prevents the functions of the product. TRUNK-5331 CohortMembership should not require a startDate

            • Should - Issue should be completed for its milestone; however, will not delay the milestone.
            • Ready for Work

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                mseaton Mike Seaton
                mogoodrich Mark Goodrich
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