Best NBi code snippet using NBi.Core.Sequence.Transformation.Aggregation.AggregationFactory.Instantiate
SummarizeEngine.cs
Source:SummarizeEngine.cs
...30 foreach (var aggregation in Args.Aggregations)31 {32 var columnName = ExtractColumnName(rs, aggregation);33 dataTable.Columns.Add(new DataColumn(columnName, MapType(aggregation.Function, aggregation.ColumnType)));34 aggregations.Add(factory.Instantiate(aggregation));35 }36 var groupbyFactory = new GroupByFactory();37 var groupbyEngine = groupbyFactory.Instantiate(new ColumnGroupByArgs(Args.GroupBys, Context.None));38 var groups = groupbyEngine.Execute(rs);39 foreach (var group in groups)40 {41 var values = new List<object>();42 values.AddRange(group.Key.Members);43 foreach (var aggregation in aggregations.Zip(Args.Aggregations, (x, y) => new { Implementation = x, Definition = y }))44 {45 var inputs = new List<object>();46 foreach (DataRow groupRow in group.Value.Rows)47 if (aggregation.Definition.Identifier == null)48 inputs.Add(1);49 else50 inputs.Add(groupRow.GetValue(aggregation.Definition.Identifier));51 var aggrResult = aggregation.Implementation.Execute(inputs);...
AggregationFactoryTest.cs
Source:AggregationFactoryTest.cs
...19 [TestCase(ColumnType.Numeric, AggregationFunctionType.Min, typeof(MinNumeric))]20 [TestCase(ColumnType.Numeric, AggregationFunctionType.Max, typeof(MaxNumeric))]21 [TestCase(ColumnType.DateTime, AggregationFunctionType.Min, typeof(MinDateTime))]22 [TestCase(ColumnType.DateTime, AggregationFunctionType.Max, typeof(MaxDateTime))]23 public void Instantiate_ColumnTypeandAggregationFunction_CorrectAggregation(ColumnType columnType, AggregationFunctionType function, Type expectedType)24 {25 var factory = new AggregationFactory();26 var aggregation = factory.Instantiate(columnType, function, Array.Empty<IScalarResolver>(), Array.Empty<IAggregationStrategy>());27 Assert.That(aggregation, Is.Not.Null);28 Assert.That(aggregation.Function, Is.TypeOf(expectedType));29 }30 [Test]31 [TestCase(ColumnType.Numeric)]32 [TestCase(ColumnType.Boolean)]33 [TestCase(ColumnType.DateTime)]34 [TestCase(ColumnType.Text)]35 public void Instantiate_ColumnTypeCount_CorrectAggregation(ColumnType columnType)36 {37 var factory = new AggregationFactory();38 var aggregation = factory.Instantiate(columnType, AggregationFunctionType.Count, Array.Empty<IScalarResolver>(), Array.Empty<IAggregationStrategy>());39 Assert.That(aggregation, Is.Not.Null);40 Assert.That(aggregation.Function, Is.InstanceOf<Count>());41 }42 [Test]43 public void Instantiate_ConcantenationText_CorrectAggregation()44 {45 var factory = new AggregationFactory();46 var aggregation = factory.Instantiate(ColumnType.Text, AggregationFunctionType.Concatenation, new List<IScalarResolver> { new LiteralScalarResolver<string>("+")}.ToArray(), Array.Empty<IAggregationStrategy>());47 Assert.That(aggregation, Is.Not.Null);48 Assert.That(aggregation.Function, Is.TypeOf<ConcatenationText>());49 }50 [TestCase(ColumnType.DateTime, AggregationFunctionType.Sum)]51 [TestCase(ColumnType.DateTime, AggregationFunctionType.Average)]52 public void Instantiate_ColumnTypeAndAggregationFunction_CorrectAggregation(ColumnType columnType, AggregationFunctionType function)53 {54 var factory = new AggregationFactory();55 Assert.Throws<ArgumentException>( () => factory.Instantiate(columnType, function, Array.Empty<IScalarResolver>(), Array.Empty<IAggregationStrategy>()));56 }57 }58}...
AggregationFactory.cs
Source:AggregationFactory.cs
...11namespace NBi.Core.Sequence.Transformation.Aggregation12{13 public class AggregationFactory14 {15 public Aggregation Instantiate(ColumnType columnType, AggregationFunctionType function, IScalarResolver[] parameters, IAggregationStrategy[] strategies)16 {17 var missingValue = (IMissingValueStrategy)(strategies.SingleOrDefault(x => x is IMissingValueStrategy) ?? new DropStrategy(columnType));18 var emptySeries = (IEmptySeriesStrategy)(strategies.SingleOrDefault(x => x is IEmptySeriesStrategy) ?? new ReturnDefaultStrategy(columnType));19 var @namespace = $"{this.GetType().Namespace}.Function.";20 var typeName = $"{Enum.GetName(typeof(AggregationFunctionType), function)}{Enum.GetName(typeof(ColumnType), columnType)}";21 var type = GetType().Assembly.GetType($"{@namespace}{typeName}", false, true) ?? throw new ArgumentException($"No aggregation named '{typeName}' has been found in the namespace '{@namespace}'.");22 if ((parameters?.Count() ?? 0) == 0)23 return new Aggregation((IAggregationFunction)(type.GetConstructor(Type.EmptyTypes).Invoke(Array.Empty<object>())), missingValue, emptySeries);24 else25 {26 var ctor = type.GetConstructors().Where(x => x.IsPublic && (x.GetParameters().Count() == parameters.Count())).FirstOrDefault()27 ?? throw new ArgumentException($"No public constructor for the aggregation '{function}' expecting {parameters.Count()} parameters.");28 return new Aggregation((IAggregationFunction)ctor.Invoke(parameters), missingValue, emptySeries);29 }30 }31 public Aggregation Instantiate(AggregationArgs args)32 => Instantiate(args.ColumnType, args.Function, args.Parameters.ToArray(), args.Strategies.ToArray());33 }34}...
Instantiate
Using AI Code Generation
1var factory = new AggregationFactory();2var aggregate = factory.Instantiate("aggregate", new[] { "column1" });3var factory = new AggregationFactory();4var aggregate = factory.Instantiate("aggregate", new[] { "column1" });5var factory = new AggregationFactory();6var aggregate = factory.Instantiate("aggregate", new[] { "column1" });7var factory = new AggregationFactory();8var aggregate = factory.Instantiate("aggregate", new[] { "column1" });9var factory = new AggregationFactory();10var aggregate = factory.Instantiate("aggregate", new[] { "column1" });11var factory = new AggregationFactory();12var aggregate = factory.Instantiate("aggregate", new[] { "column1" });13var factory = new AggregationFactory();14var aggregate = factory.Instantiate("aggregate", new[] { "column1" });15var factory = new AggregationFactory();16var aggregate = factory.Instantiate("aggregate", new[] { "column1" });17var factory = new AggregationFactory();18var aggregate = factory.Instantiate("aggregate", new[] { "column1" });19var factory = new AggregationFactory();20var aggregate = factory.Instantiate("aggregate", new[] { "column1" });21var factory = new AggregationFactory();22var aggregate = factory.Instantiate("aggregate", new[] { "column1" });
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