[jira] [Work logged] (BEAM-960) JdbcIO should infer coder when possible (such as via RowMapper)

["ASF GitHub Bot (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/BEAM-960?focusedWorklogId=680681&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-680681 ]

ASF GitHub Bot logged work on BEAM-960:
---------------------------------------

                Author: ASF GitHub Bot
            Created on: 12/Nov/21 07:06
            Start Date: 12/Nov/21 07:06
    Worklog Time Spent: 10m 
      Work Description: pabloem commented on pull request #15954:
URL: https://github.com/apache/beam/pull/15954#issuecomment-966873846


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Issue Time Tracking
-------------------

    Worklog Id:     (was: 680681)
    Time Spent: 20m  (was: 10m)

> JdbcIO should infer coder when possible (such as via RowMapper)
> ---------------------------------------------------------------
>
>                 Key: BEAM-960
>                 URL: https://issues.apache.org/jira/browse/BEAM-960
>             Project: Beam
>          Issue Type: Improvement
>          Components: io-java-jdbc
>            Reporter: Kenneth Knowles
>            Priority: P3
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> There are a few ways that we typically do this:
> # Inspect the static args of the class implementing {{RowMapper}} to determine the output type, then consult the coder registry. This method is more limited and not lambda-friendly.
> # For the a "functional interface" version, like {{RowMapper}} that allows setting the output type descriptor.
> # Also provide an abstract class-based version, for example accepting a {{SimpleFunction}} that will automatically have a rich output type descriptor.



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