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[CALCITE-7736] Replace the Checker Framework with NullAway and JSpecify - #5213

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vlsi:CALCITE-7736

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[CALCITE-7736] Replace the Checker Framework with NullAway and JSpecify#5213
vlsi wants to merge 64 commits into
apache:mainfrom
vlsi:CALCITE-7736

Commits on Oct 14, 2026
- [CALCITE-7736] Replace the Checker Framework with NullAway and JSpecify
  
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- [CALCITE-7736] Add the JSpecify Java 8 transformation workaround
  
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- [CALCITE-7736] Move the Checker Framework annotations to JSpecify
  
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- [CALCITE-7736] Replace @PolyNull with @Contract
  
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- [CALCITE-7736] Give type parameters the nullable bounds the Checker Framework inferred
  
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- [CALCITE-7736] Let the linq4j tree visitor return null
  
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- [CALCITE-7736] Admit that min and max return null for an empty sequence
  
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- [CALCITE-7736] Let a seeded aggregate start from null
  
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- [CALCITE-7736] Drop castNonNull calls whose argument is already non-null
  
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- [CALCITE-7736] Handle the nulls the JDK actually hands out
  
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- [CALCITE-7736] Remove two annotations the migration made untrue
  
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- [CALCITE-7736] Let the memory window hold the nulls it is padded with
  
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- [CALCITE-7736] Let the join enumerators carry the null rows they emit
  
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- [CALCITE-7736] Suppress the three do-nothing visitors
  
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- [CALCITE-7736] Instantiate the result-ignoring visitors with @Nullable Void
  
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- [CALCITE-7736] Drop castNonNull calls whose argument is already non-null
  
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- [CALCITE-7736] Let the PairList implementations hold nullable pairs
  
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- [CALCITE-7736] Let select and its siblings produce a nullable result
  
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- [CALCITE-7736] Let the SQL collection helpers carry null elements
  
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- [CALCITE-7736] Let the null-tolerant collection helpers take nullable elements
  
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- [CALCITE-7736] Let SqlFunctions carry the nulls that SQL values have
  
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- [CALCITE-7736] Let the shared utilities take nullable arguments
  
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- [CALCITE-7736] Let the utility collections and visitors carry nulls
  
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- [CALCITE-7736] Drop the preconditions that only the Checker Framework needed
  
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- [CALCITE-7736] Say what the guards already check, and drop two more dead preconditions
  
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- [CALCITE-7736] Take the nullable bound on the acceptCall overrides, and two more dead preconditions
  
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- [CALCITE-7736] Read the nulls the JDK hands out, and restore two narrowings
  
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- [CALCITE-7736] Let the values that are genuinely absent say so
  
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- [CALCITE-7736] Type the collections and results that hold absent values
  
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- [CALCITE-7736] Let unwrap say it may find nothing, and split two contract guards
  
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- [CALCITE-7736] Ask for what is already established, and let the expression lists hold nulls
  
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- [CALCITE-7736] Say where a value is genuinely absent, and work around the bytecode wildcard
  
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- [CALCITE-7736] Let the profiled rows and composed lists hold absent values
  
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- [CALCITE-7736] Read each value once, and drop a castNonNull that outlived its reason
  
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- [CALCITE-7736] Close out the last of the core findings
  
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- [CALCITE-7736] Give the Void visitors the return type their visitor interface declares
  
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- [CALCITE-7736] Carry the nullable element types through the JSON and metadata paths
  
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- [CALCITE-7736] Carry the nullable element types through the adapters and the runtime
  
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- [CALCITE-7736] Carry the nullable element types through the planner and the parser
  
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- [CALCITE-7736] Let NullAway itself require the explicit null-marking
  
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- [CALCITE-7736] Put :server back under nullness verification
  
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- [CALCITE-7736] Put :druid under nullness verification
  
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- [CALCITE-7736] Put :file under nullness verification
  
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- [CALCITE-7736] Put :kafka under nullness verification
  
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- [CALCITE-7736] Put :spark under nullness verification
  
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- [CALCITE-7736] Put :babel under nullness verification
  
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- [CALCITE-7736] Put :redis under nullness verification
  
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- [CALCITE-7736] Put :splunk under nullness verification
  
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- [CALCITE-7736] Put :mongodb under nullness verification
  
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- [CALCITE-7736] Put :cassandra under nullness verification
  
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- [CALCITE-7736] Put :pig under nullness verification
  
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- [CALCITE-7736] Put :arrow under nullness verification
  
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- [CALCITE-7736] Put :innodb under nullness verification
  
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- [CALCITE-7736] Put :piglet under nullness verification
  
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- [CALCITE-7736] Put :geode under nullness verification
  
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- [CALCITE-7736] Put :elasticsearch under nullness verification
  
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- [CALCITE-7736] Put :plus under nullness verification
  
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- [CALCITE-7736] Put :example:csv and :example:function under nullness verification
  
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- [CALCITE-7736] Put :testkit under nullness verification
  
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- [CALCITE-7736] Put :ubenchmark under nullness verification
  
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- [CALCITE-7736] Upgrade NullAway to 0.14.2
  
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- [CALCITE-7736] Move the nullness annotations to calcite-annotations
  
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- [CALCITE-7736] Declare jspecify as an API dependency of every module
  
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- [CALCITE-7736] Reject a null query or ORDER BY list wherever SqlOrderBy is built
  
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Commits

Commits on Oct 14, 2026