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Posted to commits@calcite.apache.org by GitBox <gi...@apache.org> on 2021/06/21 09:53:29 UTC

[GitHub] [calcite] vlsi commented on pull request #2441: [CALCITE-4655] Fix NullPointerExeption in JdbcTable.fieldClasses

vlsi commented on pull request #2441:
URL: https://github.com/apache/calcite/pull/2441#issuecomment-864899298


   `@SuppressWarnings("methodref.receiver.bound.invalid")` on the field declaration.
   
   What the warning says is: "you publish a reference to uninitialized `this`", so the callee might observe unitialized object and fail with NPE or something. In other words, typically it is a bad practice to publish `this` from the middle of the constructor, however, `memoize` is a reasonable exception.
   


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