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https://issues.apache.org/jira/browse/CALCITE-5865?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17745334#comment-17745334
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xiong duan commented on CALCITE-5865:
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Hi, Gian Merlino, This PR build failed, because of using forbidden API calls.
You can check the build log here
[job-15211553026.|https://github.com/apache/calcite/actions/runs/5614112325/job/15211553026#step:4:321]
> ClassCastException with FLOOR and CEIL on conformances that are not builtin
> ---------------------------------------------------------------------------
>
> Key: CALCITE-5865
> URL: https://issues.apache.org/jira/browse/CALCITE-5865
> Project: Calcite
> Issue Type: Bug
> Reporter: Gian Merlino
> Priority: Blocker
> Labels: pull-request-available
> Fix For: 1.35.0
>
>
> CALCITE-5747 introduced some BigQuery-specific logic for FLOOR and CEIL that
> is keyed off the conformance being {{SqlConformanceEnum.BIG_QUERY}}. However,
> it was implemented in such a way that implementations of {{SqlConformance}}
> that are not {{SqlConformanceEnum}} would throw {{ClassCastException}}, due
> to this line in {{Parser.jj}}:
> {code}
> SqlOperator op = SqlStdOperatorTable.floorCeil(floorFlag,
> (SqlConformanceEnum) this.conformance);
> {code}
> Better would be to pass {{this.conformance}} without casting, and adjust
> {{SqlStdOperatorTable.floorCeil}} to handle any kind of conformance.
> This affects us in Apache Druid land, because we have a conformance that
> extends {{SqlAbstractConformance}}.
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