public static object CalculateLambdaExpression(ColumnExpression expression, Type dataType, Type[] servicePredefinedTypes, DataRow dataRow, DataRow inputRow)
{
if (!ExpressionCalculator.IsCacheValid(expression, dataRow, inputRow))
{
expression.CachedDelegate = new CachedDelegate
{
TemplateDataRow = ((dataRow != null) ? dataRow.Table.Clone().NewRow() : null),
TemplateInputRow = ((inputRow != null) ? inputRow.Table.Clone().NewRow() : null)
};
expression.CachedDelegate.CompiledDelegate = ExpressionCalculator.CompileLambdaExpression(expression, dataType, servicePredefinedTypes, expression.CachedDelegate.TemplateDataRow, expression.CachedDelegate.TemplateInputRow);
}
if (expression.CachedDelegate.TemplateDataRow != null)
{
expression.CachedDelegate.TemplateDataRow.ItemArray = dataRow.ItemArray;
}
if (expression.CachedDelegate.TemplateInputRow != null)
{
expression.CachedDelegate.TemplateInputRow.ItemArray = inputRow.ItemArray;
}
return(expression.CachedDelegate.CompiledDelegate.DynamicInvoke(expression.DependentColumns.ToArray()));
}
internal static Delegate CompileLambdaExpression(ColumnExpression expression, Type dataType, DataRow dataRow, DataRow inputRow)
{
return(ExpressionCalculator.CompileLambdaExpression(expression, dataType, null, dataRow, inputRow));
}
