[jira] [Created] (CALCITE-2930) FilterCorrelateRule on a Correlate with SemiJoinType SEMI (or ANTI) throws IllegalStateException

["Ruben Quesada Lopez (JIRA)" <ji...@apache.org>]

Ruben Quesada Lopez created CALCITE-2930:
--------------------------------------------

             Summary: FilterCorrelateRule on a Correlate with SemiJoinType SEMI (or ANTI) throws IllegalStateException
                 Key: CALCITE-2930
                 URL: https://issues.apache.org/jira/browse/CALCITE-2930
             Project: Calcite
          Issue Type: Bug
            Reporter: Ruben Quesada Lopez


FilterCorrelateRule#onMatch method executes the following:
{code:java}
public void onMatch(RelOptRuleCall call) {
    final Filter filter = call.rel(0);
    final Correlate corr = call.rel(1);
    ...
    RelOptUtil.classifyFilters(
        corr,
        aboveFilters,
        JoinRelType.INNER,
        false,
        !corr.getJoinType().toJoinType().generatesNullsOnLeft(),
        !corr.getJoinType().toJoinType().generatesNullsOnRight(),
        aboveFilters,
        leftFilters,
        rightFilters);
    ...
{code}

If the Correlate object has SemiJoinType SEMI (or ANTI), the {{corr.getJoinType().toJoinType()}} will throw a IllegalStateException:
{code}
Caused by: java.lang.IllegalStateException: Unable to convert SEMI to JoinRelType
	at org.apache.calcite.sql.SemiJoinType.toJoinType(SemiJoinType.java:83)
	at org.apache.calcite.rel.rules.FilterCorrelateRule.onMatch(FilterCorrelateRule.java:89)
	at org.apache.calcite.plan.volcano.VolcanoRuleCall.onMatch(VolcanoRuleCall.java:205)
{code} 



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