Ulrich Kramer created CALCITE-4655:
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Summary: NullPointerException in JdbcTable.scan
Key: CALCITE-4655
URL: https://issues.apache.org/jira/browse/CALCITE-4655
Project: Calcite
Issue Type: Improvement
Affects Versions: 1.27.0, 1.26.0
Reporter: Ulrich Kramer
Fix For: next
Calling {{JdbcTable.scan}} will result in a {{NullPointerException}} because
inside {{JdbcTable.fieldClasses}} {{protoRowType}} is null.
This could easily be fixed by replacing
{code:java}
final RelDataType rowType = requireNonNull(protoRowType,
"protoRowType").apply(typeFactory);
{code}
with
{code:java}
final RelDataType rowType = getRowType(typeFactory);
{code}
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