fix(csharp/src/Drivers/BigQuery): add support for scopes

csharp/src/Apache.Arrow.Adbc/AdbcStatement.cs

@@ -147,10 +147,9 @@ public virtual void Dispose()
         /// <param name="index">
         /// The index in the array to get the value from.
         /// </param>
-        public virtual object GetValue(IArrowArray arrowArray, Field field, int index)
+        public virtual object GetValue(IArrowArray arrowArray, int index)
         {
             if (arrowArray == null) throw new ArgumentNullException(nameof(arrowArray));
-            if (field == null) throw new ArgumentNullException(nameof(field));
             if (index < 0) throw new ArgumentOutOfRangeException(nameof(index));
 
             switch (arrowArray)

csharp/src/Client/AdbcDataReader.cs

@@ -347,7 +347,7 @@ public ReadOnlyCollection<AdbcColumn> GetAdbcColumnSchema()
         public object GetValue(IArrowArray arrowArray, int ordinal)
         {
             Field field = this.schema.GetFieldByIndex(ordinal);
-            return this.adbcCommand.AdbcStatement.GetValue(arrowArray, field, this.currentRowInRecordBatch);
+            return this.adbcCommand.AdbcStatement.GetValue(arrowArray, this.currentRowInRecordBatch);
         }
 
         /// <summary>

csharp/src/Client/SchemaConverter.cs

@@ -73,6 +73,16 @@ public static DataTable ConvertArrowSchema(Schema schema, AdbcStatement adbcStat
                     row[SchemaTableColumn.NumericPrecision] = Convert.ToInt32(f.Metadata["precision"]);
                     row[SchemaTableColumn.NumericScale] = Convert.ToInt32(f.Metadata["scale"]);
                 }
+                else if (f.DataType is Decimal128Type decimal128Type)
+                {
+                    row[SchemaTableColumn.NumericPrecision] = decimal128Type.Precision;
+                    row[SchemaTableColumn.NumericScale] = decimal128Type.Scale;
+                }
+                else if (f.DataType is Decimal256Type decimal256Type)
+                {
+                    row[SchemaTableColumn.NumericPrecision] = decimal256Type.Precision;
+                    row[SchemaTableColumn.NumericScale] = decimal256Type.Scale;
+                }
                 else
                 {
                     row[SchemaTableColumn.NumericPrecision] = DBNull.Value;

csharp/src/Drivers/BigQuery/Apache.Arrow.Adbc.Drivers.BigQuery.csproj

@@ -2,6 +2,7 @@
   <PropertyGroup>
     <TargetFrameworks>netstandard2.0;net6.0</TargetFrameworks>
     <PackageReadmeFile>readme.md</PackageReadmeFile>
+    <Nullable>enable</Nullable>
   </PropertyGroup>
   <ItemGroup>
     <PackageReference Include="System.Net.Http.WinHttpHandler" Version="7.0.0" Condition="'$(TargetFrameworkIdentifier)' == '.NETStandard'" />

csharp/src/Drivers/BigQuery/BigQueryInfoArrowStream.cs

@@ -28,7 +28,7 @@ namespace Apache.Arrow.Adbc.Drivers.BigQuery
     internal class BigQueryInfoArrowStream : IArrowArrayStream
     {
         private Schema schema;
-        private RecordBatch batch;
+        private RecordBatch? batch;
 
         public BigQueryInfoArrowStream(Schema schema, List<IArrowArray> data)
         {
@@ -38,11 +38,11 @@ public BigQueryInfoArrowStream(Schema schema, List<IArrowArray> data)
 
         public Schema Schema { get { return this.schema; } }
 
-        public ValueTask<RecordBatch> ReadNextRecordBatchAsync(CancellationToken cancellationToken = default)
+        public ValueTask<RecordBatch?> ReadNextRecordBatchAsync(CancellationToken cancellationToken = default)
         {
-            RecordBatch batch = this.batch;
+            RecordBatch? batch = this.batch;
             this.batch = null;
-            return new ValueTask<RecordBatch>(batch);
+            return new ValueTask<RecordBatch?>(batch);
         }
 
         public void Dispose()

csharp/src/Drivers/BigQuery/BigQueryParameters.cs

@@ -31,6 +31,7 @@ public class BigQueryParameters
         public const string AllowLargeResults = "adbc.bigquery.allow_large_results";
         public const string UseLegacySQL = "adbc.bigquery.use_legacy_sql";
         public const string LargeDecimalsAsString = "adbc.bigquery.large_decimals_as_string";
+        public const string Scopes = "adbc.bigquery.scopes";
     }
 
     /// <summary>

csharp/src/Drivers/BigQuery/BigQueryStatement.cs

@@ -16,7 +16,9 @@
 */
 
 using System;
+using System.Collections;
 using System.Collections.Generic;
+using System.Data.SqlTypes;
 using System.IO;
 using System.Linq;
 using System.Text.Json;
@@ -87,16 +89,16 @@
             return new Field(field.Name, TranslateType(field), field.Mode == "NULLABLE");
         }
 
-        public override object GetValue(IArrowArray arrowArray, Field field, int index)
+        public override object GetValue(IArrowArray arrowArray, int index)
         {
-            switch(arrowArray)
+            switch (arrowArray)
             {
                 case StructArray structArray:
                     return SerializeToJson(structArray, index);
                 case ListArray listArray:
                     return listArray.GetSlicedValues(index);
                 default:
-                    return base.GetValue(arrowArray, field, index);
+                    return base.GetValue(arrowArray, index);
             }
         }
 
@@ -141,7 +143,10 @@
                     return GetType(field, new Decimal128Type(38, 9));
 
                 case "BIGNUMERIC" or "BIGDECIMAL":
-                    return bool.Parse(this.Options[BigQueryParameters.LargeDecimalsAsString]) ? GetType(field, StringType.Default) : GetType(field, new Decimal256Type(76, 38));
+                    if (this.Options != null)
+                        return bool.Parse(this.Options[BigQueryParameters.LargeDecimalsAsString]) ? GetType(field, StringType.Default) : GetType(field, new Decimal256Type(76, 38));
+                    else
+                        return GetType(field, StringType.Default);
 
                 default: throw new InvalidOperationException($"{field.Type} cannot be translated");
             }
@@ -189,17 +194,135 @@
         }
 
         private string SerializeToJson(StructArray structArray, int index)
+        {
+            Dictionary<String, object> jsonDictionary = ParseStructArray(structArray, index);
+
+            return JsonSerializer.Serialize(jsonDictionary);
+        }
+
+        private Dictionary<String, object> ParseStructArray(StructArray structArray, int index)
         {
             Dictionary<String, object> jsonDictionary = new Dictionary<String, object>();
             StructType structType = (StructType)structArray.Data.DataType;
             for (int i = 0; i < structArray.Data.Children.Length; i++)
             {
-                jsonDictionary.Add(structType.Fields[i].Name,
-                    GetValue(structArray.Fields[i], structType.GetFieldByName(structType.Fields[i].Name), index));
+                string name = structType.Fields[i].Name;
+                object value = GetValue(structArray.Fields[i], index);
+
+                if (value is StructArray structArray1)
+                {
+                    List<Dictionary<string, object>> children = new List<Dictionary<string, object>>();
+
+                    if (structArray1.Length > 1)
+                    {
+                        for (int j = 0; j < structArray1.Length; j++)
+                            children.Add(ParseStructArray(structArray1, j));
+                    }
+
+                    if (children.Count > 0)
+                    {
+                        jsonDictionary.Add(name, children);
+                    }
+                    else
+                    {
+                        jsonDictionary.Add(name, ParseStructArray(structArray1, index));
+                    }
+                }
+                else if (value is IArrowArray arrowArray)
+                {
+                    IList? values = CreateList(arrowArray);
+
+                    if (values != null)
+                    {
+                        for (int j = 0; j < arrowArray.Length; j++)
+                        {
+                            values.Add(base.GetValue(arrowArray, j));
+                        }
+
+                        jsonDictionary.Add(name, values);
+                    }
+                    else
+                    {
+                        jsonDictionary.Add(name, new List<object>());
+                    }
+                }
+                else
+                {
+                    jsonDictionary.Add(name, value);
+                }
+            }
+
+            return jsonDictionary;
+        }
+
+        private IList? CreateList(IArrowArray arrowArray)
+        {
+            if (arrowArray == null) throw new ArgumentNullException(nameof(arrowArray));
+
+            switch (arrowArray)
+            {
+                case BooleanArray booleanArray:
+                    return new List<bool>();
+                case Date32Array date32Array:
+                case Date64Array date64Array:
+                    return new List<DateTime>();
+                case Decimal128Array decimal128Array:
+                    return new List<SqlDecimal>();
+                case Decimal256Array decimal256Array:
+                    return new List<string>();
+                case DoubleArray doubleArray:
+                    return new List<double>();
+                case FloatArray floatArray:
+                    return new List<float>();
+#if NET5_0_OR_GREATER
+                case PrimitiveArray<Half> halfFloatArray:
+                    return new List<Half>();
+#endif
+                case Int8Array int8Array:
+                    return new List<sbyte>();
+                case Int16Array int16Array:
+                    return new List<short>();
+                case Int32Array int32Array:
+                    return new List<int>();
+                case Int64Array int64Array:
+                    return new List<long>();
+                case StringArray stringArray:
+                    return new List<string>();
+#if NET6_0_OR_GREATER
+                case Time32Array time32Array:
+                case Time64Array time64Array:
+                    return new List<TimeOnly>();
+#else
+                case Time32Array time32Array:
+                case Time64Array time64Array:
+                    return new List<TimeSpan>();
+#endif
+                case TimestampArray timestampArray:
+                    return new List<DateTimeOffset>();
+                case UInt8Array uInt8Array:
+                    return new List<byte>();
+                case UInt16Array uInt16Array:
+                    return new List<ushort>();
+                case UInt32Array uInt32Array:
+                    return new List<uint>();
+                case UInt64Array uInt64Array:
+                    return new List<ulong>();
+
+                case BinaryArray binaryArray:
+                    return new List<byte>();
+
+                    // not covered:
+                    // -- struct array
+                    // -- dictionary array
+                    // -- fixed size binary
+                    // -- list array
+                    // -- union array
             }
-            return JsonSerializer.Serialize(jsonDictionary);
+
+            return null;
         }
 
+
         class MultiArrowReader : IArrowArrayStream
         {
             readonly Schema schema;
@@ -218,7 +341,7 @@
             {
                 if (this.readers == null)
                 {
                     return null;
                 }
 
                 while (true)
@@ -228,7 +351,7 @@
                         if (!this.readers.MoveNext())
                         {
                             Dispose(); // TODO: Remove this line
                             return null;
                         }
                         this.reader = this.readers.Current;
                     }

csharp/src/Drivers/BigQuery/BigQueryTokenResponse.cs

@@ -25,15 +25,15 @@ namespace Apache.Arrow.Adbc.Drivers.BigQuery
     internal class BigQueryTokenResponse
     {
         [JsonPropertyName("access_token")]
-        public string AccessToken { get; set; }
+        public string? AccessToken { get; set; }
 
         [JsonPropertyName("expires_in")]
         public int ExpiresIn { get; set; }
 
         [JsonPropertyName("scope")]
-        public string Scope { get; set; }
+        public string? Scope { get; set; }
 
         [JsonPropertyName("token_type")]
-        public string TokenType { get; set; }
+        public string? TokenType { get; set; }
     }
 }

csharp/src/Drivers/BigQuery/readme.md

@@ -55,6 +55,9 @@ https://cloud.google.com/dotnet/docs/reference/Google.Cloud.BigQuery.V2/latest/G
 **adbc.bigquery.refresh_token**<br>
 &nbsp;&nbsp;&nbsp;&nbsp;The refresh token used for when the generated OAuth token expires. Required for `user` authentication.
 
+**adbc.bigquery.scopes**<br>
+&nbsp;&nbsp;&nbsp;&nbsp;Optional. Comma separated list of scopes to include for the credential.
+
 **adbc.bigquery.use_legacy_sql**<br>
 &nbsp;&nbsp;&nbsp;&nbsp;Sets the [UseLegacySql](https://cloud.google.com/dotnet/docs/reference/Google.Cloud.BigQuery.V2/latest/Google.Cloud.BigQuery.V2.QueryOptions#Google_Cloud_BigQuery_V2_QueryOptions_UseLegacySql) value of the QueryOptions to `true` if configured; otherwise, the default is `false`.
 

csharp/test/Apache.Arrow.Adbc.Tests/Client/ClientTests.cs

@@ -70,7 +70,7 @@ private AdbcDataReader GetMoqDataReader(DecimalBehavior decimalBehavior, string
 
             Mock<AdbcStatement> mockStatement = new Mock<AdbcStatement>();
             mockStatement.Setup(x => x.ExecuteQuery()).Returns(queryResult); ;
-            mockStatement.Setup(x => x.GetValue(It.IsAny<IArrowArray>(), It.IsAny<Field>(), It.IsAny<int>())).Returns(sqlDecimal);
+            mockStatement.Setup(x => x.GetValue(It.IsAny<IArrowArray>(), It.IsAny<int>())).Returns(sqlDecimal);
 
             Adbc.Client.AdbcConnection mockConnection = new Adbc.Client.AdbcConnection();
             mockConnection.DecimalBehavior = decimalBehavior;

csharp/test/Apache.Arrow.Adbc.Tests/ClientTests.cs

@@ -137,8 +137,8 @@ public static void CanClientExecuteQuery(Adbc.Client.AdbcConnection adbcConnecti
         /// <param name="sampleDataBuilder">The <see cref="SampleDataBuilder"/> to use</param>
         public static void VerifyTypesAndValues(Adbc.Client.AdbcConnection adbcConnection, SampleDataBuilder sampleDataBuilder)
         {
-            if(adbcConnection == null) throw new ArgumentNullException(nameof(adbcConnection));
-            if(sampleDataBuilder == null) throw new ArgumentNullException(nameof(sampleDataBuilder));
+            if (adbcConnection == null) throw new ArgumentNullException(nameof(adbcConnection));
+            if (sampleDataBuilder == null) throw new ArgumentNullException(nameof(sampleDataBuilder));
 
             adbcConnection.Open();
 

csharp/test/Apache.Arrow.Adbc.Tests/Utils.cs

@@ -75,7 +75,7 @@ public static bool CanExecuteTest(string environmentVariable, out string environ
         public static T LoadTestConfiguration<T>(string environmentVariable)
             where T : TestConfiguration
         {
-            if(CanExecuteTest(environmentVariable, out string environmentValue))
+            if (CanExecuteTest(environmentVariable, out string environmentValue))
                 return GetTestConfiguration<T>(environmentValue);
 
             throw new InvalidOperationException($"Cannot execute test configuration from environment variable `{environmentVariable}`");
@@ -92,7 +92,7 @@ public static T LoadTestConfiguration<T>(string environmentVariable)
         public static T GetTestConfiguration<T>(string fileName)
             where T : TestConfiguration
         {
-            if(!File.Exists(fileName))
+            if (!File.Exists(fileName))
                 throw new FileNotFoundException(fileName);
 
             // use a JSON file for the various settings

csharp/test/Drivers/BigQuery/BigQueryData.cs

@@ -146,6 +146,62 @@ public static SampleDataBuilder GetSampleData()
                     }
                 });
 
+            // complex struct
+            sampleDataBuilder.Samples.Add(
+               new SampleData()
+               {
+                   Query =  "SELECT " +
+                            "STRUCT(" +
+                            "\"Iron Man\" as name," +
+                            "\"Avengers\" as team," +
+                            "[\"Genius\", \"Billionaire\", \"Playboy\", \"Philanthropist\"] as powers," +
+                            "[" +
+                            "  STRUCT(" +
+                            "    \"Captain America\" as name, " +
+                            "    \"Avengers\" as team, " +
+                            "    [\"Super Soldier Serum\", \"Vibranium Shield\"] as powers, " +
+                            "    [" +
+                            "     STRUCT(" +
+                            "       \"Thanos\" as name, " +
+                            "       \"Black Order\" as team, " +
+                            "       [\"Infinity Gauntlet\", \"Super Strength\", \"Teleportation\"] as powers, " +
+                            "       [" +
+                            "         STRUCT(" +
+                            "           \"Loki\" as name, " +
+                            "           \"Asgard\" as team, " +
+                            "           [\"Magic\", \"Shapeshifting\", \"Trickery\"] as powers " +
+                            "          )" +
+                            "        ] as allies" +
+                            "      )" +
+                            "    ] as enemies" +
+                            " )," +
+                            " STRUCT(" +
+                            "    \"Spider-Man\" as name, " +
+                            "    \"Avengers\" as team, " +
+                            "    [\"Spider-Sense\", \"Web-Shooting\", \"Wall-Crawling\"] as powers, " +
+                            "    [" +
+                            "      STRUCT(" +
+                            "        \"Green Goblin\" as name, " +
+                            "        \"Sinister Six\" as team, " +
+                            "        [\"Glider\", \"Pumpkin Bombs\", \"Super Strength\"] as powers, " +
+                            "         [" +
+                            "          STRUCT(" +
+                            "            \"Doctor Octopus\" as name, " +
+                            "            \"Sinister Six\" as team, " +
+                            "            [\"Mechanical Arms\", \"Genius\", \"Madness\"] as powers " +
+                            "          )" +
+                            "        ] as allies" +
+                            "      )" +
+                            "    ] as enemies" +
+                            "  )" +
+                            " ] as friends" +
+                            ") as iron_man",
+                   ExpectedValues = new List<ColumnNetTypeArrowTypeValue>()
+                   {
+                        new ColumnNetTypeArrowTypeValue("iron_man", typeof(string), typeof(StringType), "{\"name\":\"Iron Man\",\"team\":\"Avengers\",\"powers\":[\"Genius\",\"Billionaire\",\"Playboy\",\"Philanthropist\"],\"friends\":[{\"name\":\"Captain America\",\"team\":\"Avengers\",\"powers\":[\"Super Soldier Serum\",\"Vibranium Shield\"],\"enemies\":{\"name\":\"Thanos\",\"team\":\"Black Order\",\"powers\":[\"Infinity Gauntlet\",\"Super Strength\",\"Teleportation\"],\"allies\":{\"name\":\"Loki\",\"team\":\"Asgard\",\"powers\":[\"Magic\",\"Shapeshifting\",\"Trickery\"]}}},{\"name\":\"Spider-Man\",\"team\":\"Avengers\",\"powers\":[\"Spider-Sense\",\"Web-Shooting\",\"Wall-Crawling\"],\"enemies\":{\"name\":\"Green Goblin\",\"team\":\"Sinister Six\",\"powers\":[\"Glider\",\"Pumpkin Bombs\",\"Super Strength\"],\"allies\":{\"name\":\"Doctor Octopus\",\"team\":\"Sinister Six\",\"powers\":[\"Mechanical Arms\",\"Genius\",\"Madness\"]}}}]}")
+                   }
+               });
+
             return sampleDataBuilder;
         }
     }