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How to use Instantiate method of NBi.Core.Sequence.Transformation.Aggregation.AggregationFactory class

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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