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https://issues.apache.org/jira/browse/CALCITE-3166?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16876677#comment-16876677
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Danny Chan commented on CALCITE-3166:
-------------------------------------
Thanks [~julianhyde], i'm ok with this Context unwrap, cause it seems like a
code refactoring.
> Make RelBuilder configurable
> ----------------------------
>
> Key: CALCITE-3166
> URL: https://issues.apache.org/jira/browse/CALCITE-3166
> Project: Calcite
> Issue Type: Bug
> Reporter: Julian Hyde
> Assignee: Julian Hyde
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.21.0
>
>
> Make {{RelBuilder}} configurable, so that particular optimizations can easily
> be turned off.
> I propose to add a class {{RelBuilder.Config}}, which is immutable and has a
> public final field for each configuration property; also a class
> {{RelBuilder.ConfigBuilder}} to create a config.
> {{RelBuilder.create(FrameworkConfig frameworkConfig)}} will get a config by
> calling {{frameworkConfig.getContext().unwrap(RelBuilder.Config.class)}}.
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