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Posted to issues@calcite.apache.org by "Julian Hyde (Jira)" <ji...@apache.org> on 2020/11/06 00:17:00 UTC

[jira] [Updated] (CALCITE-4380) Make class SqlNodeList implement List

     [ https://issues.apache.org/jira/browse/CALCITE-4380?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Julian Hyde updated CALCITE-4380:
---------------------------------
    Description: 
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()}}.

See [email thread on dev@calcite|https://lists.apache.org/thread.html/rdf346f734991928f3a1e84e46145a9d51275a4622c7e25fac1989908%40%3Cdev.calcite.apache.org%3E].

  was:
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()}}.


> 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
>            Assignee: Julian Hyde
>            Priority: Major
>
> 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()}}.
> See [email thread on dev@calcite|https://lists.apache.org/thread.html/rdf346f734991928f3a1e84e46145a9d51275a4622c7e25fac1989908%40%3Cdev.calcite.apache.org%3E].



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