Julian Hyde created CALCITE-4380:
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Summary: Make class SqlNodeList implement List<SqlNode>
Key: CALCITE-4380
URL: https://issues.apache.org/jira/browse/CALCITE-4380
Project: Calcite
Issue Type: Bug
Reporter: Julian Hyde
Make {{class SqlNodeList}} implement {{List<SqlNode>}}. Currently it implements
{{Iterable<SqlNode>}}. Supporting the List interface would make the size
available, and that might allow users of SqlNodeList to pre-allocate space.
The downside is that a few places might have different overloads on {{SqlNode}}
and {{Collection<SqlNode>}} or {{List<SqlNode>}}, and these would become
ambiguous because {{SqlNodeList}} implements both.
Another benefit is that we can remove many of the calls to {{List<SqlNode>
SqlNodeList.toList()}}.
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