Class AggregateFunction

Represents an aggregate function.

Inheritance
System.Object
JsonObject
AggregateFunction
Inherited Members
Namespace: Telerik.DataSource
Assembly: Telerik.DataSource.dll

Syntax

public abstract class AggregateFunction : JsonObject

Constructors

AggregateFunction()

Declaration
protected AggregateFunction()

Properties

AggregateMethodName

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

Caption

Gets or sets the informative message to display as an illustration of the aggregate function.

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

The caption to display as an illustration of the aggregate function.

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.

MemberType

The type of the field

Declaration
public Type MemberType { get; set; }
Property Value
System.Type

ResultFormatString

Gets or sets a string that is used to format the result value.

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

The format string.

SourceField

Gets or sets the name of the field, of the item from the set of items, which value is used as the argument of the aggregate function.

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

The name of the field to get the argument value from.

Methods

CreateAggregateExpression(Expression, Boolean)

Creates the aggregate expression that is used for constructing expression tree that will calculate the aggregate result.

Declaration
public abstract Expression CreateAggregateExpression(Expression enumerableExpression, bool liftMemberAccessToNull)
Parameters
System.Linq.Expressions.Expression enumerableExpression

The grouping expression.
System.Boolean liftMemberAccessToNull

Returns
System.Linq.Expressions.Expression

GenerateFunctionName()

Generates default name for this function using this type's name.

Declaration
protected virtual string GenerateFunctionName()
Returns
System.String

Function name generated with the following pattern: {System.Object.GetType.System.Reflection.MemberInfo.Name}_{System.Object.GetHashCode}

Serialize(IDictionary<String, Object>)

Declaration
protected override void Serialize(IDictionary<string, object> json)
Parameters
System.Collections.Generic.IDictionary<System.String, System.Object> json

Overrides