Stamatis Zampetakis created CALCITE-7617:
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Summary: Improve type safety of RelJson API using generics
Key: CALCITE-7617
URL: https://issues.apache.org/jira/browse/CALCITE-7617
Project: Calcite
Issue Type: Task
Components: core
Reporter: Stamatis Zampetakis
Assignee: Stamatis Zampetakis
Fix For: 1.43.0
The {{RelJson#typeNameToClass}} and {{RelJson#getConstructor}} APIs use raw
types (Class, Constructor) leading to unchecked casts that may lead to
unpredictable runtime failures.
The APIs were meant to work only with sub-classes of the {{RelNode}} interface
so we can improve type safety by introducing generic types in the signatures of
the methods. Doing this the code becomes more safer & and more readable;
redundant casts can be removed and various runtime crashes can now be caught
during compilation.
{{RelJson}} is an internal API so the change should not affect end-users.
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