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https://issues.apache.org/jira/browse/CALCITE-5166?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated CALCITE-5166:
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Labels: pull-request-available (was: )
> Method accept(RelShuttle) is not overridden in LogicalCalc and
> LogicalTableModify
> ---------------------------------------------------------------------------------
>
> Key: CALCITE-5166
> URL: https://issues.apache.org/jira/browse/CALCITE-5166
> Project: Calcite
> Issue Type: Bug
> Components: core
> Affects Versions: 1.30.0
> Reporter: Roman Kondakov
> Assignee: Roman Kondakov
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.31.0
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> Method {{RelNode#accept(RelShuttle)}} is not overridden for {{LogicalCalc}}
> and {{{}LogicalTableModify{}}}. This leads to the bug when logic implemented
> in {{RelShuttle#visit(LogicalCalc)}} is never applied because {{visit()}}
> method is never called due to incorrect dispatching.
> This test will fail without {{accept(RelShuttle)}} method is overridden in
> Calc:
> {code:java}
> @Test void testRelShuttleForLogicalCalc() {
> final String sql = "select ename from emp";
> final RelNode rel = sql(sql).toRel();
> final HepProgramBuilder programBuilder = HepProgram.builder();
> programBuilder.addRuleInstance(CoreRules.PROJECT_TO_CALC);
> final HepPlanner planner = new HepPlanner(programBuilder.build());
> planner.setRoot(rel);
> final RelNode calc = planner.findBestExp();
> final List<RelNode> rels = new ArrayList<>();
> final RelShuttleImpl visitor = new RelShuttleImpl() {
> @Override public RelNode visit(LogicalCalc calc) {
> RelNode visitedRel = super.visit(calc);
> rels.add(visitedRel);
> return visitedRel;
> }
> };
> calc.accept(visitor);
> assertThat(rels.size(), is(1));
> assertThat(rels.get(0), isA(LogicalCalc.class));
> } {code}
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