Alessandro Solimando created CALCITE-4436:
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Summary: Use the fields order from the struct type for
'ITEM(STRUCT, INDEX)' access
Key: CALCITE-4436
URL: https://issues.apache.org/jira/browse/CALCITE-4436
Project: Calcite
Issue Type: Improvement
Components: core
Affects Versions: 1.27.0
Reporter: Alessandro Solimando
Assignee: Alessandro Solimando
The index-based access via the "ITEM" operator for operands of row/struct type
is currently experimental and disabled by default.
Its implementation uses the fields order from `getDeclaredFields()`, a
JVM-specific feature, this might lead to silent data corruption (see
[PR-2230|https://github.com/apache/calcite/pull/2230]).
The aim of the ticket is to improve the feature by relying on the safer fields
order
from the struct field type itself (_i.e._, `relType.getFields()[index]`) so
that we can enable it by default.
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