QStreamable.GroupBy<TSource, TKey, TResult> Method (IQStreamable<TSource>, Expression<Func<TSource, TKey>>, Expression<Func<TSource, TResult>>)
Partition operator.
Namespace: Microsoft.ComplexEventProcessing.Linq
Assembly: Microsoft.ComplexEventProcessing (in Microsoft.ComplexEventProcessing.dll)
Syntax
'Declaration
<ExtensionAttribute> _
Public Shared Function GroupBy(Of TSource, TKey, TResult) ( _
source As IQStreamable(Of TSource), _
keySelector As Expression(Of Func(Of TSource, TKey)), _
resultSelector As Expression(Of Func(Of TSource, TResult)) _
) As IQPartitionedStreamable(Of TKey, TResult)
'Usage
Dim source As IQStreamable(Of TSource)
Dim keySelector As Expression(Of Func(Of TSource, TKey))
Dim resultSelector As Expression(Of Func(Of TSource, TResult))
Dim returnValue As IQPartitionedStreamable(Of TKey, TResult)
returnValue = source.GroupBy(keySelector, _
resultSelector)
public static IQPartitionedStreamable<TKey, TResult> GroupBy<TSource, TKey, TResult>(
this IQStreamable<TSource> source,
Expression<Func<TSource, TKey>> keySelector,
Expression<Func<TSource, TResult>> resultSelector
)
[ExtensionAttribute]
public:
generic<typename TSource, typename TKey, typename TResult>
static IQPartitionedStreamable<TKey, TResult>^ GroupBy(
IQStreamable<TSource>^ source,
Expression<Func<TSource, TKey>^>^ keySelector,
Expression<Func<TSource, TResult>^>^ resultSelector
)
static member GroupBy :
source:IQStreamable<'TSource> *
keySelector:Expression<Func<'TSource, 'TKey>> *
resultSelector:Expression<Func<'TSource, 'TResult>> -> IQPartitionedStreamable<'TKey, 'TResult>
JScript does not support generic types and methods.
Type Parameters
- TSource
The input payload type.
- TKey
The type of partition key.
- TResult
The type of result.
Parameters
- source
Type: Microsoft.ComplexEventProcessing.Linq.IQStreamable<TSource>
The input stream.
- keySelector
Type: System.Linq.Expressions.Expression<Func<TSource, TKey>>
The key projection expression.
- resultSelector
Type: System.Linq.Expressions.Expression<Func<TSource, TResult>>
The result projection expression.
Return Value
Type: Microsoft.ComplexEventProcessing.Linq.IQPartitionedStreamable<TKey, TResult>
The partitioned stream.
Usage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type IQStreamable<TSource>. When you use instance method syntax to call this method, omit the first parameter. For more information, see https://msdn.microsoft.com/en-us/library/bb384936(v=sql.111) or https://msdn.microsoft.com/en-us/library/bb383977(v=sql.111).