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How to use EvaluateExpression method of NBi.Core.Calculation.RowValueExtractor class

Best NBi code snippet using NBi.Core.Calculation.RowValueExtractor.EvaluateExpression

RowValueExtractor.cs

Source:RowValueExtractor.cs

...34                return context.CurrentRow.ItemArray[alias.Column];35            var expression = context.Expressions?.SingleOrDefault(x => string.Equals(x.Name, name, StringComparison.OrdinalIgnoreCase));36            if (expression != null)37            {38                var result = EvaluateExpression(expression, context);39                var expColumnName = $"exp::{name}";40                if (!context.CurrentRow.Table.Columns.Contains(expColumnName))41                {42                    var newColumn = new DataColumn(expColumnName, typeof(object));43                    context.CurrentRow.Table.Columns.Add(newColumn);44                }45                context.CurrentRow[expColumnName] = result;46                return result;47            }48            var column = context.CurrentRow.Table.Columns.Cast<DataColumn>().SingleOrDefault(x => string.Equals(x.ColumnName, name, StringComparison.OrdinalIgnoreCase));49            if (column != null)50                return context.CurrentRow[column.ColumnName];51            var existingNames = context.CurrentRow.Table.Columns.Cast<DataColumn>().Select(x => x.ColumnName)52                .Union(context.Aliases.Select(x => x.Name)53                .Union(context.Expressions.Select(x => x.Name)));54            throw new ArgumentException($"The value '{name}' is not recognized as a column position, a column name, a column alias or an expression. Possible arguments are: '{string.Join("', '", existingNames.ToArray())}'");55        }56        protected object EvaluateExpression(IColumnExpression expression, Context context)57        {58            if (expression.Language == LanguageType.NCalc)59            {60                var exp = new NCalc.Expression(expression.Value);61                var factory = new ColumnIdentifierFactory();62                exp.EvaluateParameter += delegate (string name, NCalc.ParameterArgs args)63                {64                    args.Result = name.StartsWith("@")65                        ? context.Variables[name.Substring(1, name.Length-1)].GetValue()66                        : Execute(context, factory.Instantiate(name));67                };68                return exp.Evaluate();69            }70            else if (expression.Language == LanguageType.Native)...

EvaluateExpression

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using NBi.Core.Calculation;7{8    {9        static void Main(string[] args)10        {11            RowValueExtractor rve = new RowValueExtractor();12            var result = rve.EvaluateExpression("2+2", null);13            Console.WriteLine(result);14            Console.ReadLine();15        }16    }17}

EvaluateExpression

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using NBi.Core.Calculation;7using NBi.Core.Calculation.Predicate;8using NBi.Core.Calculation.Predicate.Boolean;9using NBi.Core.Calculation.Predicate.Text;10using NBi.Core.ResultSet;11using NBi.Core.Variable;12{13    {14        static void Main(string[] args)15        {16            var row = new ResultSetRow();17            row.Add(new ResultSetCell("a", "a"));18            row.Add(new ResultSetCell("b", "b"));19            row.Add(new ResultSetCell("c", "c"));20            row.Add(new ResultSetCell("d", "d"));21            row.Add(new ResultSetCell("e", "e"));22            var extractor = new RowValueExtractor(row);23            var result = extractor.EvaluateExpression("a+\" \" + b + \" \" + c + \" \" + d + \" \" + e");24            Console.WriteLine(result);25            Console.ReadKey();26        }27    }28}29var result = extractor.EvaluateExpression("a+\" \" + b + \" \" + c + \" \" + d + \" \" + e + \" \" + var");

EvaluateExpression

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using NBi.Core.Calculation;7using NBi.Core.ResultSet;8using NBi.Core.Calculation.Predicate;9using NBi.Core.Calculation.Function;10using NBi.Core.Variable;11using NBi.Core.Calculation.Grouping;12using NBi.Core.Calculation.Ranking;13using NBi.Core.Calculation.Ranking.Percentile;14using NBi.Core.Calculation.Ranking.Window;15using NBi.Core.Calculation.Ranking.Position;16using NBi.Core.Calculation.Ranking.Nth;17using NBi.Core.Calculation.Ranking.Aggregation;18using NBi.Core.Calculation.Ranking.Grouping;19using NBi.Core.Calculation.Ranking.Grouping.Key;20using NBi.Core.Calculation.Ranking.Grouping.KeyCollection;21using NBi.Core.Calculation.Ranking.Grouping.KeyCollection.Key;22using NBi.Core.Calculation.Ranking.Grouping.KeyCollection.Key.Comparer;23using NBi.Core.Calculation.Ranking.Grouping.KeyCollection.Key.Comparer.Numeric;24using NBi.Core.Calculation.Ranking.Grouping.KeyCollection.Key.Comparer.Text;25using NBi.Core.Calculation.Ranking.Grouping.KeyCollection.Key.Comparer.Text.Regex;26using NBi.Core.Calculation.Ranking.Grouping.KeyCollection.Key.Comparer.Text.Wildcard;27using NBi.Core.Calculation.Ranking.Grouping.KeyCollection.Key.Comparer.Text.Culture;28using NBi.Core.Calculation.Ranking.Grouping.KeyCollection.Key.Comparer.Text.Culture.Numeric;29using NBi.Core.Calculation.Ranking.Grouping.KeyCollection.Key.Comparer.Text.Culture.Text;30using NBi.Core.Calculation.Ranking.Grouping.KeyCollection.Key.Comparer.Text.Culture.Text.Numeric;31using NBi.Core.Calculation.Ranking.Grouping.KeyCollection.Key.Comparer.Text.Culture.Text.Numeric.Nth;32using NBi.Core.Calculation.Ranking.Grouping.KeyCollection.Key.Comparer.Text.Culture.Text.Numeric.Nth.Picture;33using NBi.Core.Calculation.Ranking.Grouping.KeyCollection.Key.Comparer.Text.Culture.Text.Numeric.Nth.Picture.Numeric;34using NBi.Core.Calculation.Ranking.Grouping.KeyCollection.Key.Comparer.Text.Culture.Text.Numeric.Nth.Picture.Numeric.Nth;

EvaluateExpression

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using NBi.Core.Calculation;7{8    {9        static void Main(string[] args)10        {11            var extractor = new RowValueExtractor();12            var result = extractor.EvaluateExpression("=SUM(1,2,3,4,5)", null);13            Console.WriteLine("result: " + result);14            Console.ReadLine();15        }16    }17}18using System;19using System.Collections.Generic;20using System.Linq;21using System.Text;22using System.Threading.Tasks;23using NBi.Core.Calculation;24{25    {26        static void Main(string[] args)27        {28            var extractor = new RowValueExtractor();29            var result = extractor.EvaluateExpression("=SUM(1,2,3,4,5)", null);30            Console.WriteLine("result: " + result);31            Console.ReadLine();32        }33    }34}35using System;36using System.Collections.Generic;37using System.Linq;38using System.Text;39using System.Threading.Tasks;40using NBi.Core.Calculation;41{42    {43        static void Main(string[] args)44        {45            var extractor = new RowValueExtractor();46            var result = extractor.EvaluateExpression("=SUM(1,2,3,4,5)", null);47            Console.WriteLine("result: " + result);48            Console.ReadLine();49        }50    }51}52using System;53using System.Collections.Generic;54using System.Linq;55using System.Text;56using System.Threading.Tasks;57using NBi.Core.Calculation;58{59    {60        static void Main(string[] args)61        {62            var extractor = new RowValueExtractor();63            var result = extractor.EvaluateExpression("=SUM(1,2,3,4,5)", null);64            Console.WriteLine("result: "

EvaluateExpression

Using AI Code Generation

1using NBi.Core.Calculation;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 extractor = new RowValueExtractor();12            var result = extractor.EvaluateExpression("1+1", 0);13            Console.WriteLine(result);14            Console.ReadLine();15        }16    }17}18=IF(A1=1,2,3)+B119=IF(A1=1,2,3)+B120=IF(A1=1,2,3)+B1

EvaluateExpression

Using AI Code Generation

1using NBi.Core.Calculation;2using NBi.Core.Calculation.Predicate;3using NBi.Core.Calculation.Predicate.Boolean;4using NBi.Core.Calculation.Predicate.Numeric;5using NBi.Core.Calculation.Predicate.Text;6using System;7using System.Collections.Generic;8using System.Data;9using System.Linq;10using System.Text;11using System.Threading.Tasks;12{13    {14        static void Main(string[] args)15        {16            DataTable dt = new DataTable();17            dt.Columns.Add("Column1", typeof(int));18            DataRow dr = dt.NewRow();19            dr["Column1"] = 1;20            dt.Rows.Add(dr);21            RowValueExtractor rve = new RowValueExtractor(dt.Rows[0]);22            NumericPredicate np = new NumericPredicate("Column1", NumericCondition.GreaterThan, 0);23            bool result = rve.EvaluateExpression(np);24            Console.WriteLine(result);25            Console.ReadLine();26        }27    }28}29using NBi.Core.Calculation;30using NBi.Core.Calculation.Predicate;31using NBi.Core.Calculation.Predicate.Boolean;32using NBi.Core.Calculation.Predicate.Numeric;33using NBi.Core.Calculation.Predicate.Text;34using System;35using System.Collections.Generic;36using System.Data;37using System.Linq;38using System.Text;39using System.Threading.Tasks;40{41    {42        static void Main(string[] args)43        {44            DataTable dt = new DataTable();45            dt.Columns.Add("Column1", typeof(int));46            DataRow dr = dt.NewRow();47            dr["Column1"] = 1;48            dt.Rows.Add(dr);49            RowValueExtractor rve = new RowValueExtractor(dt.Rows[0]);50            TextPredicate tp = new TextPredicate("Column1", TextCondition.Contains, "1");

EvaluateExpression

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using NBi.Core.Calculation;7using System.Data;8using System.Data.SqlClient;9using System.Data.OleDb;10{11    {12        static void Main(string[] args)13        {14            DataTable dt = new DataTable();15            dt.Columns.Add("Column1", typeof(int));16            dt.Columns.Add("Column2", typeof(int));17            dt.Columns.Add("Column3", typeof(int));18            dt.Columns.Add("Column4", typeof(int));19            dt.Rows.Add(1, 2, 3, 4);20            dt.Rows.Add(5, 6, 7, 8);21            dt.Rows.Add(9, 10, 11, 12);22            dt.Rows.Add(13, 14, 15, 16);23            RowValueExtractor rve = new RowValueExtractor();24            string expression = "Column1 + Column2";25            foreach (DataRow dr in dt.Rows)26            {27                Console.WriteLine(rve.EvaluateExpression(expression, dr));28            }29            Console.ReadLine();30        }31    }32}

EvaluateExpression

Using AI Code Generation

1NBi.Core.Calculation.RowValueExtractor extractor = new NBi.Core.Calculation.RowValueExtractor();2object value = extractor.EvaluateExpression("Name", row);3NBi.Core.Calculation.RowValueExtractor extractor = new NBi.Core.Calculation.RowValueExtractor();4object value = extractor.EvaluateExpression("Name", row);5NBi.Core.Calculation.RowValueExtractor extractor = new NBi.Core.Calculation.RowValueExtractor();6object value = extractor.EvaluateExpression("Name", row);7NBi.Core.Calculation.RowValueExtractor extractor = new NBi.Core.Calculation.RowValueExtractor();8object value = extractor.EvaluateExpression("Name", row);9NBi.Core.Calculation.RowValueExtractor extractor = new NBi.Core.Calculation.RowValueExtractor();10object value = extractor.EvaluateExpression("Name", row);11NBi.Core.Calculation.RowValueExtractor extractor = new NBi.Core.Calculation.RowValueExtractor();12object value = extractor.EvaluateExpression("Name", row);

EvaluateExpression

Using AI Code Generation

1var row = new NBi.Core.ResultSet.Row(new List<object>() { 1, "A", 3 });2var extractor = new NBi.Core.Calculation.RowValueExtractor();3var result = extractor.EvaluateExpression(row, "Column1");4var row = new NBi.Core.ResultSet.Row(new List<object>() { 1, "A", 3 });5var extractor = new NBi.Core.Calculation.RowValueExtractor();6var result = extractor.EvaluateExpression(row, "Column2");7var row = new NBi.Core.ResultSet.Row(new List<object>() { 1, "A", 3 });8var extractor = new NBi.Core.Calculation.RowValueExtractor();9var result = extractor.EvaluateExpression(row, "Column3");10var row = new NBi.Core.ResultSet.Row(new List<object>() { 1, "A", 3 });11var extractor = new NBi.Core.Calculation.RowValueExtractor();12var result = extractor.EvaluateExpression(row, "Column4");13var row = new NBi.Core.ResultSet.Row(new List<object>() { 1, "A", 3 });14var extractor = new NBi.Core.Calculation.RowValueExtractor();15var result = extractor.EvaluateExpression(row, "Column5");16var row = new NBi.Core.ResultSet.Row(new List<object>() { 1,

EvaluateExpression

Using AI Code Generation

1using System;2using System.Collections.Generic;3using System.Linq;4using System.Text;5using System.Threading.Tasks;6using NBi.Core.Calculation;7using NBi.Core.ResultSet;8using NBi.Core.Variable;9using NBi.Core.Evaluate;10using NBi.Core.Calculation.Predicate;11{12    {13        static void Main(string[] args)14        {15            var engine = new CalculationEngine();16            var row = new Row();17            row.Add(new Cell("A", "1"));18            row.Add(new Cell("B", "2"));19            var extractor = new RowValueExtractor();20            var value = extractor.EvaluateExpression(row, "A");21            var args = new CalculationArgs();22            args.Set("A", value);23            var result = engine.Perform(args, "A+1");24            var predicateArgs = new PredicateArgs();25            predicateArgs.Set("A", result);26            var predicateResult = engine.Perform(predicateArgs, "A>2");27            var resultSet = new ResultSet();28            resultSet.Load(new System.Data.DataTable());29            var resultSetArgs = new ResultSetArgs();30            resultSetArgs.Set("A", resultSet);31            var resultSetResult = engine.Perform(resultSetArgs, "A=2");32            var variableArgs = new VariableArgs();

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