Marco Jorge created CALCITE-4963:
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Summary: Extensibility of SqlDialectFactory lacks reusability of
SqlDialectFactoryImpl.*
Key: CALCITE-4963
URL: https://issues.apache.org/jira/browse/CALCITE-4963
Project: Calcite
Issue Type: Improvement
Components: core
Reporter: Marco Jorge
Although it's possible to extend the SqlDialectFactory, the custom
implementation cannot reuse any of the behaviour of the default
SqlDialectFactoryImpl. The default SqlDialectFactoryImpl has lots of
important/reusable behaviour such as #getCasing, #isCaseSensitive,
#getNullCollation or even the default decisioning in the #create method.
If any user needs to provide a custom SqlDialect yet still support the existing
SqlDialects the user needs to copy the whole SqlDialectFactoryImpl to make the
custom changes.
This request is to make the default behavior in SqlDialectFactoryImpl reusable
so that extensions don't need to fork a whole class.
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