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https://issues.apache.org/jira/browse/CALCITE-3492?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Haisheng Yuan resolved CALCITE-3492.
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Fix Version/s: 1.22.0
Resolution: Fixed
Fixed in
https://github.com/apache/calcite/commit/1badb69dfe7332a66ec12bb21024e81b3072d691.
> RexUtil.simplifyOrs() throws exception if terms has 1 RexNode
> -------------------------------------------------------------
>
> Key: CALCITE-3492
> URL: https://issues.apache.org/jira/browse/CALCITE-3492
> Project: Calcite
> Issue Type: Improvement
> Components: core
> Reporter: Haisheng Yuan
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.22.0
>
> Time Spent: 20m
> Remaining Estimate: 0h
>
> This is a regression caused by the refactoring in 1.20.0.
> When {{terms}} has only 1 element, it will throw an exception. We discovered
> the issue when trying to upgrade Calcite.
> {code:java}
> public static RexNode simplifyOrs(RexBuilder rexBuilder,
> List<RexNode> terms) {
> return new RexSimplify(rexBuilder, RelOptPredicateList.EMPTY, EXECUTOR)
> .simplifyUnknownAs(rexBuilder.makeCall(SqlStdOperatorTable.OR, terms),
> RexUnknownAs.UNKNOWN);
> }
> {code}
> We can't assume the {{terms}} always has more than 1 element. Although this
> method is deprecated, I think we need to correct the regression. Maybe we
> don't need a test case, given it is a deprecated method.
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