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NBi
NBi.Core.Sequence.Transformation.Aggregation.Strategy
DropStrategy

How to use DropStrategy class of NBi.Core.Sequence.Transformation.Aggregation.Strategy package

Best NBi code snippet using NBi.Core.Sequence.Transformation.Aggregation.Strategy.DropStrategy

DropStrategyTest.cs

Source:DropStrategyTest.cs

...7using System.Text;8using System.Threading.Tasks;9namespace NBi.Testing.Unit.Core.Sequence.Transformation.Strategy10{11    public class DropStrategyTest12    {13        [Test]14        public void Execute_NothingToDrop_NothingDropped()15        {16            var list = new List<object>() { 1, 3, 5 };17            var strategy = new DropStrategy(ColumnType.Numeric);18            Assert.That(strategy.Execute(list).Count, Is.EqualTo(3));19        }20        [Test]21        public void Execute_NothingToDropEvenIfText_NothingDropped()22        {23            var list = new List<object>() { "1", "3", "5" };24            var strategy = new DropStrategy(ColumnType.Numeric);25            Assert.That(strategy.Execute(list).Count, Is.EqualTo(3));26        }27        [Test]28        public void Execute_NothingToDrop_SameValues()29        {30            var list = new List<object>() { 1, 3, 5 };31            var strategy = new DropStrategy(ColumnType.Numeric);32            Assert.That(strategy.Execute(list), Has.Member(1));33            Assert.That(strategy.Execute(list), Has.Member(3));34            Assert.That(strategy.Execute(list), Has.Member(5));35        }36        [Test]37        public void Execute_Blank_BlankDropped()38        {39            var list = new List<object>() { 1, "(blank)", 3, 5 };40            var strategy = new DropStrategy(ColumnType.Numeric);41            Assert.That(strategy.Execute(list).Count, Is.EqualTo(3));42            Assert.That(strategy.Execute(list), Has.Member(1));43            Assert.That(strategy.Execute(list), Has.Member(3));44            Assert.That(strategy.Execute(list), Has.Member(5));45        }46        [Test]47        public void Execute_Null_NullDropped()48        {49            var list = new List<object>() { 1, 3, 5, null };50            var strategy = new DropStrategy(ColumnType.Numeric);51            Assert.That(strategy.Execute(list).Count, Is.EqualTo(3));52            Assert.That(strategy.Execute(list), Has.Member(1));53            Assert.That(strategy.Execute(list), Has.Member(3));54            Assert.That(strategy.Execute(list), Has.Member(5));55        }56        [Test]57        public void Execute_NumericForText_NullDroppedButNumericHeld()58        {59            var list = new List<object>() { "foo", "bar", 1, null };60            var strategy = new DropStrategy(ColumnType.Text);61            Assert.That(strategy.Execute(list).Count, Is.EqualTo(3));62            Assert.That(strategy.Execute(list), Has.Member("foo"));63            Assert.That(strategy.Execute(list), Has.Member("bar"));64            Assert.That(strategy.Execute(list), Has.Member("1"));65        }66    }67}

AggregationFactory.cs

Source:AggregationFactory.cs

...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)...

DropStrategy.cs

Source:DropStrategy.cs

...6using System.Text;7using System.Threading.Tasks;8namespace NBi.Core.Sequence.Transformation.Aggregation.Strategy9{10    public class DropStrategy : IMissingValueStrategy11    {12        private ColumnType ColumnType { get; }13        public DropStrategy(ColumnType columnType)14            => ColumnType = columnType;15        public IEnumerable<object> Execute(IEnumerable<object> values)16        {17            var caster = new CasterFactory().Instantiate(ColumnType);18            return values.Where(x => caster.IsValid(x) && x!=null).Select(x => caster.Execute(x)).Cast<object>();19        }20    }21}...

DropStrategy

Using AI Code Generation

1using NBi.Core.Sequence.Transformation.Aggregation.Strategy;2using System;3using System.Collections.Generic;4using System.Linq;5using System.Text;6using System.Threading.Tasks;7{8    {9        static void Main(string[] args)10        {11            var dropStrategy = new DropStrategy();12            var result = dropStrategy.Execute(new[] { 1, 2, 3, 4, 5 }, 2);13            foreach (var item in result)14            {15                Console.WriteLine(item);16            }17            Console.ReadLine();18        }19    }20}

DropStrategy

Using AI Code Generation

1var strategy = new DropStrategy(2);2var aggregator = new Aggregator(strategy);3var result = aggregator.Execute(values);4var strategy = new DropStrategy(2);5var aggregator = new Aggregator(strategy);6var result = aggregator.Execute(values);7var strategy = new DropStrategy(2);8var aggregator = new Aggregator(strategy);9var result = aggregator.Execute(values);10var strategy = new DropStrategy(2);11var aggregator = new Aggregator(strategy);12var result = aggregator.Execute(values);13var strategy = new DropStrategy(2);14var aggregator = new Aggregator(strategy);15var result = aggregator.Execute(values);16var strategy = new DropStrategy(2);17var aggregator = new Aggregator(strategy);18var result = aggregator.Execute(values);19var strategy = new DropStrategy(2);20var aggregator = new Aggregator(strategy);21var result = aggregator.Execute(values);22var strategy = new DropStrategy(2);23var aggregator = new Aggregator(strategy);24var result = aggregator.Execute(values);25var strategy = new DropStrategy(2);26var aggregator = new Aggregator(strategy);27var result = aggregator.Execute(values);28var strategy = new DropStrategy(2);29var aggregator = new Aggregator(strategy);30var result = aggregator.Execute(values);

DropStrategy

Using AI Code Generation

1var strategy = new DropStrategy();2var result = strategy.Execute(new List<object> { 1, 2, 3, 4, 5 }, 2);3Console.WriteLine(string.Join(", ", result));4var strategy = new DropStrategy();5var result = strategy.Execute(new List<object> { 1, 2, 3, 4, 5 }, 2);6Console.WriteLine(string.Join(", ", result));7Can you run the .cs file from the command line? (e.g. C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe 2.cs)8Is it possible that you have a different version of .NET installed on your machine? (e.g. 4.5 instead of 4.0)9Can you run the .cs file from the command line? (e.g. C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe 2.cs) Is it possible that you have a different version of .NET installed on your machine? (e.g. 4.5 instead of 4.0)

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