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https://issues.apache.org/jira/browse/OFBIZ-715?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12507532
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Adrian Crum commented on OFBIZ-715:
-----------------------------------
After scouring the 'net for some ideas, I discovered that the algorithms that
produce the most accurate results utilize some looping like Andrew's
implementation has. The main flaw with the implementation in the attached patch
is the lack of "smarts" to prevent it from excessive looping. For instance,
what if you requested elapsed milliseconds since 10 years ago? The method in
this patch would execute a loop for every millisecond in a ten year span.
I think I've come up with a good strategy for calculating elapsed time that
combines some looping with additional logic. I'll work on it this weekend and
then I will submit a patch.
> Utils for doing date calculations based on timeUomIds
> -----------------------------------------------------
>
> Key: OFBIZ-715
> URL: https://issues.apache.org/jira/browse/OFBIZ-715
> Project: OFBiz
> Issue Type: Improvement
> Components: framework
> Reporter: Andrew Sykes
> Priority: Minor
> Attachments: UtilDateTime.java.patch, UtilDateTime.java.patch
>
>
> 6 new methods,
> 1/ adjustDateTime (3 methods) adjusts either a Timestamp Date or Calendar by
> the given timeUomId and timeUomMultiple
> 2/ getTimeUomMultipleDifference (3 methods) gets the timeUomMultiple for two
> Timestamp Date or Calendar objects given the timeUomId.
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