[jira] [Created] (CALCITE-5500) Add support in Avatica for TIMESTAMP WITH LOCAL TIME ZONE

["Will Noble (Jira)" <ji...@apache.org>]

Will Noble created CALCITE-5500:
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             Summary: Add support in Avatica for TIMESTAMP WITH LOCAL TIME ZONE
                 Key: CALCITE-5500
                 URL: https://issues.apache.org/jira/browse/CALCITE-5500
             Project: Calcite
          Issue Type: Improvement
          Components: avatica
            Reporter: Will Noble


This is closely related to CALCITE-5446 but tracks the changes required in Avatica. This is where time zone conversion happens when the client invokes a getter method on a {{ResultSet}}. Here are the intended semantics for {{TIMESTAMP}} and {{TIMESTAMP WITH LOCAL TIME ZONE}}:

{{TIMESTAMP}}:
* {{getString()}} -> Always returns the same string no matter the client's time zone
* {{getTimestamp()}} -> Subtracts the zone offset from the instant, so rendering the instant to a string in the client's time zone produces the same result as {{getString()}}

{{TIMESTAMP WITH LOCAL TIME ZONE}}:
* {{getTimestamp()}} -> Always returns the same instant no matter the time zone
* {{getString()}} -> Adds the zone offset to the instant before rending it to a string, so rendering the result of {{getTimestamp()}} in the client's time zone produces the same result as this.



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