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MQSeries.net Forum IndexWebSphere Message Broker SupportdateTime to date convertion in Mapping Node issue

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dziku007
PostPosted: Tue Nov 12, 2019 6:35 am Post subject: dateTime to date convertion in Mapping Node issue Reply with quote

Apprentice

Joined: 26 Jul 2012
Posts: 28

Hi,

I have strange dateTime to date convertion results using Mapping Node. It seems to happen using dates before year 1600 AD. Using "Convert" function the results are:
Code:

input:1555-01-01T12:30:00  output:1554-12-12
input:1055-01-01T12:30:00  output:1054-12-20
input:0055-01-01T12:30:00  output:0055-01-05
input:0001-01-01T12:30:00  output:0001-01-05




What's more intresting using Compute node with mapping:
Code:

      DECLARE retDate DATE;
      DECLARE pattern CHARACTER 'yyyy-MM-dd';
      
      DECLARE inDateTime TIMESTAMP;
      SET inDateTime = InputRoot.SOAP.Body.*:InDateTime;   

      SET retDate = CAST (inDateTime AS DATE FORMAT pattern );
      SET OutputRoot.SOAP.Body.ns:retDate = retDate;
      RETURN TRUE;


Results are correct
Code:

input:1555-01-01T12:30:00  output:1555-01-01
input:1055-01-01T12:30:00  output:1055-01-01
input:0055-01-01T12:30:00  output:0055-01-01
input:0001-01-01T12:30:00  output:0001-01-01


But when I use the same transformation in "custom esql" in mapping node I still gets the same strange results as using "Convert" function.

Do You have an idea where is the point? Is it something with gregorian calendar?

I am using IIB 9.0.0.10
Thanks for any answer.
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Vitor
PostPosted: Tue Nov 12, 2019 8:39 am Post subject: Re: dateTime to date convertion in Mapping Node issue Reply with quote

Grand High Poobah

Joined: 11 Nov 2005
Posts: 25856
Location: Texas, USA

dziku007 wrote:
It seems to happen using dates before year 1600 AD.


You might want to circle back with your audit people about their data retention policies.


_________________
Honesty is the best policy.
Insanity is the best defence.
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dziku007
PostPosted: Tue Nov 12, 2019 12:24 pm Post subject: Reply with quote

Apprentice

Joined: 26 Jul 2012
Posts: 28

No, we are trying to migrate to ESB processes from the order of the Templar Knights
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gbaddeley
PostPosted: Wed Nov 13, 2019 2:34 pm Post subject: Reply with quote

Jedi

Joined: 25 Mar 2003
Posts: 2040
Location: Melbourne, Australia

Calendars were not standardised in different countries until quite recently. There was a major change in 1582. This could explain unexpected date conversions during this period.

https://www.timeanddate.com/calendar/julian-gregorian-switch.html
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Glenn
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dziku007
PostPosted: Thu Nov 14, 2019 1:00 am Post subject: Reply with quote

Apprentice

Joined: 26 Jul 2012
Posts: 28

Thank you, that seems to be the reason, the broker results with dates that shows the real dates that includes julian -> gregorian calendar shift,
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