Class QueryableAggregateDescription

Represents an aggregate description for QueryableDataProvider.

Inheritance
System.Object
Cloneable
SettingsNode
DescriptionBase
AggregateDescriptionBase
QueryableAggregateDescriptionBase
QueryableAggregateDescription
QueryablePropertyAggregateDescriptionBase
Inherited Members
System.Object.ToString()
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
Namespace: Telerik.Pivot.Queryable
Assembly: Telerik.Pivot.DataProviders.Queryable.dll

Syntax

public abstract class QueryableAggregateDescription : QueryableAggregateDescriptionBase, INotifyPropertyChanged, ISupportInitialize, IObservableServiceProvider, IServiceProvider, IEditable, IAggregateDescription, IDescriptionBase, INamed, ITotalFormatHost, IDescriptionsReferencing, IStringFormattableAggregate

Properties

AggregateMethodName

Gets the name of the aggregate method on the ExtensionMethodsType that will be used for aggregation.

Declaration
protected abstract string AggregateMethodName { get; }
Property Value
System.String

The name of the aggregate method that will be used.

ExtensionMethodsType

Gets the type of the extension methods that holds the extension methods for aggregation. For example System.Linq.Enumerable or Telerik.Pivot.Queryable.

Declaration
protected virtual Type ExtensionMethodsType { get; }
Property Value
System.Type

The type of that holds the extension methods. The default value is System.Linq.Enumerable.

FunctionName

Gets or sets the name of the aggregate function, which appears as a property of the group record on which records the function works.

Declaration
public virtual string FunctionName { get; set; }
Property Value
System.String

The name of the function as visible from the group record.

Methods

CreateAggregateExpression(Expression, String)

Creates the aggregate expression.

Declaration
protected abstract Expression CreateAggregateExpression(Expression enumerableExpression, string aggregatedValueName)
Parameters
System.Linq.Expressions.Expression enumerableExpression

The grouping expression.
System.String aggregatedValueName

TODO: finish this.
Returns
System.Linq.Expressions.Expression

CreateAggregateValueExpression(ParameterExpression)

Creates the aggregate expression.

Declaration
protected abstract Expression CreateAggregateValueExpression(ParameterExpression itemExpression)
Parameters
System.Linq.Expressions.ParameterExpression itemExpression

TODO: finish this.
Returns
System.Linq.Expressions.Expression

GenerateFunctionName()

Generates identification string for this function using AggregateMethodName.

Declaration
protected abstract string GenerateFunctionName()
Returns
System.String

Function identification string.

Extension Methods