Julian Hyde created CALCITE-4524:
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Summary: Make some fields non-nullable (SqlSelect.selectList,
DataContext.getTypeFactory)
Key: CALCITE-4524
URL: https://issues.apache.org/jira/browse/CALCITE-4524
Project: Calcite
Issue Type: Bug
Reporter: Julian Hyde
Make some fields non-nullable: {{SqlSelect.selectList}},
{{DataContext.getTypeFactory()}}, {{DataContext.getQueryProvider()}}.
Add {{class DataContexts}}, with a few useful implementations of {{interface
DataContext}}.
Resolve some other TODOs relating to nullability.
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