Fix null values in UDF and UDA fields

src/Cassandra.IntegrationTests/Core/UdfTests.cs

@@ -154,7 +154,7 @@ public void GetFunction_Should_Retrieve_Metadata_Of_Cql_Function_Without_Paramet
  Assert.AreEqual(false, func.CalledOnNullInput);
  Assert.False(func.Monotonic);
  Assert.False(func.Deterministic);
- Assert.AreEqual(func.MonotonicOn, new string[0]);
+ Assert.AreEqual(new string[0], func.MonotonicOn);
  }
 
  [Test, TestCase(true), TestCase(false), TestCassandraVersion(2, 2)]

src/Cassandra/SchemaParser.cs

@@ -840,8 +840,7 @@ public override Task<AggregateMetadata> GetAggregateAsync(string keyspaceName, s
  StateFunction = row.GetValue<string>("state_func"),
  FinalFunction = row.GetValue<string>("final_func"),
  InitialCondition = row.GetValue<string>("initcond"),
- Deterministic = row.GetColumn("deterministic") != null &&
- row.GetValue<bool>("deterministic"),
+ Deterministic = row.GetValue<Nullable<Boolean>>("deterministic").GetValueOrDefault(false),
  Signature = argumentTypes,
  StateType = tasks[0].Result,
  ReturnType = tasks[1].Result,
@@ -893,10 +892,14 @@ public override Task<FunctionMetadata> GetFunctionAsync(string keyspaceName, str
 
  if (row.GetColumn("deterministic") != null)
  {
- // DSE 6.0+
- result.Deterministic = row.GetValue<bool>("deterministic");
- result.Monotonic = row.GetValue<bool>("monotonic");
+ // DSE 6.0+ or HCD
+ result.Deterministic = row.GetValue<Nullable<Boolean>>("deterministic").GetValueOrDefault(false);
+ result.Monotonic = row.GetValue<Nullable<Boolean>>("monotonic").GetValueOrDefault(false);
  result.MonotonicOn = row.GetValue<string[]>("monotonic_on");
+ if (result.MonotonicOn is null)
+ {
+ result.MonotonicOn = new string[0];
+ }
  }
 
  return result;