[jira] [Commented] (CALCITE-1408) AccessorImpl throws RuntimeException when conversion is impossible

["Julian Hyde (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CALCITE-1408?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15543718#comment-15543718 ] 

Julian Hyde commented on CALCITE-1408:
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Just checking that you understand the purpose of Accessor: you should only use, say, IntAccessor if you are absolutely sure that the value is being transported as an Integer.

> AccessorImpl throws RuntimeException when conversion is impossible
> ------------------------------------------------------------------
>
>                 Key: CALCITE-1408
>                 URL: https://issues.apache.org/jira/browse/CALCITE-1408
>             Project: Calcite
>          Issue Type: Bug
>          Components: avatica
>            Reporter: Laurent Goujon
>
> {{AccessorImpl}} relies on {{cannotConvert(String)}} method to throw a exception when conversion is not possible between the accessor data type, and what the user requested.
> The exact class type of the exception is {{RuntimeException}} which is very generic, and not easy for the user to catch, unlike more specific types. Moreover JDBC drivers usually throws a {{SQLException}} instances for these kind of exceptions, which is likely what users are expecting.



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