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https://issues.apache.org/jira/browse/CALCITE-1929?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16120819#comment-16120819
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Julian Hyde commented on CALCITE-1929:
--------------------------------------
And a further fix in
http://git-wip-us.apache.org/repos/asf/calcite/commit/c2d3885.
> Deprecate class RelDataTypeFactory.FieldInfoBuilder
> ---------------------------------------------------
>
> Key: CALCITE-1929
> URL: https://issues.apache.org/jira/browse/CALCITE-1929
> Project: Calcite
> Issue Type: Bug
> Reporter: Julian Hyde
> Assignee: Julian Hyde
> Fix For: 1.14.0
>
>
> Since interface {{RelDataTypeFactory.FieldInfo}} is deprecated, and
> {{RelDataTypeFactory.FieldInfoBuilder}} implements it, we should also
> deprecate {{FieldInfoBuilder}}.
> We will create a new class {{RelDataTypeFactory.Builder}} that does the same
> as {{FieldInfoBuilder}} without implementing the {{FieldInfo}} interface.
> For backwards compatibility, {{RelDataTypeFactory.builder()}} will continue
> to return {{FieldInfoBuilder}} but we recommend that you assign the result to
> a variable of type {{Builder}}. Thus you won't be using the deprecated class
> in your code.
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