Class AggregateFunctionExpression<T>
Represents a column expression of aggregate function.
Inheritance
System.Object
AggregateFunctionExpression<T>
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.ToString()
Namespace: DevZest.Data.Primitives
Assembly: DevZest.Data.dll
Syntax
public abstract class AggregateFunctionExpression<T> : FunctionExpression<T>Type Parameters
| Name | Description |
|---|---|
| T | The data type of the expression. |
Constructors
| Name | Description |
|---|---|
| AggregateFunctionExpression(Column) | Initializes a new instance of AggregateFunctionExpression<T> class. |
Properties
| Name | Description |
|---|---|
| Item[DataRow] | |
| Param | Gets the parameter of the aggregate function. |
Methods
| Name | Description |
|---|---|
| EvalAccumulate(DataRow) | Accumulates the aggregate against specified parent DataRow. |
| EvalInit() | Initializes the expression evaluation. |
| EvalReturn() | Returns the calculated aggregate result. |
| EvalTraverse(DataSetChain) | Traverse the DataSetChain during expression evaluation. |
| GetAggregateBaseModels() | |
| GetScalarSourceModels() |