[jira] [Created] (CALCITE-4716) ClassCastException converting SARG in RelNode to SQL

["Jesus Camacho Rodriguez (Jira)" <ji...@apache.org>]

Jesus Camacho Rodriguez created CALCITE-4716:
------------------------------------------------

             Summary: ClassCastException converting SARG in RelNode to SQL
                 Key: CALCITE-4716
                 URL: https://issues.apache.org/jira/browse/CALCITE-4716
             Project: Calcite
          Issue Type: Bug
          Components: core
            Reporter: Jesus Camacho Rodriguez
            Assignee: Jesus Camacho Rodriguez


The stacktrace is the following:

{noformat}
class org.apache.calcite.rex.RexLocalRef cannot be cast to class org.apache.calcite.rex.RexLiteral (org.apache.calcite.rex.RexLocalRef and org.apache.calcite.rex.RexLiteral are in unnamed module of loader 'app')
java.lang.ClassCastException: class org.apache.calcite.rex.RexLocalRef cannot be cast to class org.apache.calcite.rex.RexLiteral (org.apache.calcite.rex.RexLocalRef and org.apache.calcite.rex.RexLiteral are in unnamed module of loader 'app')
	at org.apache.calcite.rel.rel2sql.SqlImplementor$Context.toSql(SqlImplementor.java:695)
	at org.apache.calcite.rel.rel2sql.SqlImplementor$Context.toSql(SqlImplementor.java:597)
...
{noformat}

The relevant expressions in the Calc operator are the following:
{code}
...expr#5=[Sarg[(10..11]]], expr#6=[SEARCH($t0, $t5)]...
{code}

The current code in {{SqlImplementor}} considers the second argument to SEARCH is always a RexLiteral:
{code}
...
      case SEARCH:
        final RexCall search = (RexCall) rex;
        literal = (RexLiteral) search.operands.get(1);
        final Sarg sarg = castNonNull(literal.getValueAs(Sarg.class));
        //noinspection unchecked
        return toSql(program, search.operands.get(0), literal.getType(), sarg);
...
{code}



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