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https://issues.apache.org/jira/browse/CALCITE-6265?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17817747#comment-17817747
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Alessandro Solimando commented on CALCITE-6265:
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In principle I agree, but it seems that the code is failing on the execution at
the "Enumerable" level, for this reason [~tnieradzik]'s PR is trying to apply
coercion when building the Linq expression.
Not sure this is what you mean [~julianhyde], because that's still on the
Calcite-side if I am not wrong, while you seem to suggest to look into the
Avatica-side.
> Cannot provide different numeric type as placeholder
> ----------------------------------------------------
>
> Key: CALCITE-6265
> URL: https://issues.apache.org/jira/browse/CALCITE-6265
> Project: Calcite
> Issue Type: Bug
> Components: core
> Reporter: Tim Nieradzik
> Assignee: Tim Nieradzik
> Priority: Major
> Labels: pull-request-available
>
> The _empid_ column is of type {_}INT{_}. When providing a _short_ value as a
> placeholder, a _ClassCastException_ is thrown.
> *Test case:*
> {{ final String sql =}}
> {{ "select \"empid\" from \"hr\".\"emps\" where \"empid\" in (?,
> ?)";}}{{ CalciteAssert.hr()}}
> {{ .query(sql)}}
> {{ .consumesPreparedStatement(p -> {}}
> {{ p.setShort(1, (short) 100);}}
> {{ p.setShort(2, (short) 110);}}
> {{ })}}
> {{ .returnsUnordered("empid=100", "empid=110");}}
> *Stack trace:*
> {{java.lang.ClassCastException: class java.lang.Short cannot be cast to class
> java.lang.Integer (java.lang.Short and java.lang.Integer are in module
> java.base of loader 'bootstrap')}}
> {{ at Baz$1$1.moveNext(Unknown Source)}}
> {{ at
> org.apache.calcite.linq4j.Linq4j$EnumeratorIterator.<init>(Linq4j.java:679)}}
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