julianhyde edited a comment on issue #89: [CALCITE-2945] Use Boolean#equals in Boolean object compare URL: https://github.com/apache/calcite-avatica/pull/89#issuecomment-475984184 What about if that.readOnly is not null, but this.readOnly is null? The new code will throw NPE. I suggest ```if (that.readOnly != null && !Objects.equals(this.readOnly, that.readOnly))``` The same bug exists in `autoCommit`. We should use the same pattern in `transactionIsolation`, even though it doesn't have the bug. In the test, please fix indentation, and use `assertThat( ... is())` rather than `assertEquals`, and add a test case for the NPE I mentioned above.
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