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We don't use `requireNonNull`\n   because it throws `NullPointerException`; we would prefer\n   to throw `AssertionError` or `IllegalStateException`\n * Replace `x.equals(\"\")` and `x.size() == 0` with `x.isEmpty()`\n * Make fields `final` where possible\n * Make private methods and inner classes `static` where possible\n * In class `Pair<K, V>` make the type variables `K` and `V`\n   no longer nullable by default (you can make each of them\n   nullable if you need)\n * Always import `Objects.requireNonNull`, `Integer.parseInt`,\n   `Float.parseFloat`, `Double.parseDouble`, `Byte.parseByte`,\n   `Short.parseShort`, `Boolean.parseBoolean`, `Long.parseLong`\n   via static import, and change autostyle rules to enforce\n   this automatically\n * Remove redundant 'throws' clauses\n * Add `@Nullable` annotations for method parameters and\n   return values so that types are nullable only if they\n   need to be; the goal is that you should not pass null or\n   a nullable value as an argument that has non-nullable\n   type, and after this change we are nearer to that goal\n\nIn Util, optimize methods `transform` and `transformIndexed`\nfor the case where list is empty and immutable.\n\nClose apache/calcite#3939","shortMessageHtmlLink":"[<a class=\"issue-link js-issue-link notranslate\" rel=\"noopener noreferrer nofollow\" href=\"https://issues.apache.org/jira/browse/CALCITE-6552\">CALCITE-6552</a>] Enable CheckerFramework in 'server' module"}},{"before":"30304bb489bb9eea84e556bc059010354a49c46d","after":"8771e3f94b2c4f132bfa51a0b93ddb7a11cd97bc","ref":"refs/heads/main","pushedAt":"2024-09-01T00:18:05.000Z","pushType":"push","commitsCount":1,"pusher":{"login":"julianhyde","name":"Julian Hyde","path":"/julianhyde","primaryAvatarUrl":"https://avatars.githubusercontent.com/u/1130553?s=80&v=4"},"commit":{"message":"[CALCITE-6555] RelBuilder.aggregateRex wrongly thinks aggregate functions of \"GROUP BY ()\" queries are NOT NULL\n\nIn RelBuilder, the aggregateRex method (added in CALCITE-5802)\nwrongly thinks that aggregate functions in a `GROUP BY ()`\nquery are NOT NULL. Consider the query\n\n  SELECT SUM(empno) AS s, COUNT(empno) AS c\n  FROM emp\n  GROUP BY ()\n\n`SUM(empno)` should be nullable, even though `empno` has type\n`SMALLINT NOT NULL`, because `GROUP BY ()` will return one row\neven if `emp` has no rows, and therefore `SUM` will be\nevaluated over the empty set. A RelBuilder test that attempts\nto build an equivalent query gets the following error stack:\n\n  java.lang.AssertionError: type mismatch:\n  ref:\n  SMALLINT NOT NULL\n  input:\n  SMALLINT\n\nWe add a test case for measure queries, because measures are\nthe only code path that uses `aggregateRex` at present.","shortMessageHtmlLink":"[<a class=\"issue-link js-issue-link notranslate\" rel=\"noopener noreferrer nofollow\" href=\"https://issues.apache.org/jira/browse/CALCITE-6555\">CALCITE-6555</a>] RelBuilder.aggregateRex wrongly thinks aggregate funct…"}},{"before":"dac001d8ce7199e84f1148ea7bb57bc2dd83ea91","after":"30304bb489bb9eea84e556bc059010354a49c46d","ref":"refs/heads/main","pushedAt":"2024-08-29T21:49:32.000Z","pushType":"pr_merge","commitsCount":1,"pusher":{"login":"mihaibudiu","name":"Mihai Budiu","path":"/mihaibudiu","primaryAvatarUrl":"https://avatars.githubusercontent.com/u/19397042?s=80&v=4"},"commit":{"message":"Remove FENNEL VM; enable some disabled tests\n\nSigned-off-by: Mihai Budiu <mbudiu@feldera.com>","shortMessageHtmlLink":"Remove FENNEL VM; enable some disabled tests"}}],"hasNextPage":true,"hasPreviousPage":false,"activityType":"all","actor":null,"timePeriod":"all","sort":"DESC","perPage":30,"cursor":"Y3Vyc29yOnYyOpK7MjAyNC0wOS0yMVQwNjo1Njo0MS4wMDAwMDBazwAAAAS8lI1v","startCursor":"Y3Vyc29yOnYyOpK7MjAyNC0wOS0yMVQwNjo1Njo0MS4wMDAwMDBazwAAAAS8lI1v","endCursor":"Y3Vyc29yOnYyOpK7MjAyNC0wOC0yOVQyMTo0OTozMi4wMDAwMDBazwAAAASoFN1x"}},"title":"Activity · apache/calcite"}